2019年12月23日星期一

What’s The Difference Between IC Rated and Non-IC Fixture

Whether you’re remodeling your current home or building a new one, your recessed lights generate heat, and that heat needs to go somewhere. If you don’t want to set your ceiling on fire, it’s important to know when you can use non-IC rated downlights and when you need IC rated fixtures. So what is the difference?

Non-IC rated fixtures require at least 3 inches of space between the metal of the can and the ceiling insulation. Non-IC rated downlights are often used in remodels and ceilings without insulation, such as unfinished attics, unless you’re feeling ambitious and want to rip out your ceiling. These units have a single can design that requires an air pocket to dissipate heat. They are less expensive than IC rated fixtures and can be used with higher Watt bulbs.

If you want to install non-IC rated fixtures in an insulated ceiling, you can use an airtight cover to keep the insulation from touching the can. This allows you to insulate around the cover to help prevent condensation build-up, mold growth, and minimize drafts. You can find these covers premade or make your own using rigid foam insulation and sealing it using insulation foam. Just remember to keep at least 3 inches of space between the metal housing and any other materials.

IC rated fixtures can be used in either insulated or uninsulated ceilings, but are almost always used in new construction rather than remodels. Thanks to a double can or “can within a can” design, only the outer can comes in contact with the insulation and remains cool enough to prevent combustion. This way the insulation in the ceiling can rest directly against the metal without becoming a fire hazard.

2019年12月22日星期日

OKT Architectural LED Linear Light, Recessed or Surface Mount

LS
The OKT LS architectural LED linear light combines modern aesthetic elegance with unequalled performance and energy efficiency, design flexibility. Two widths: 4inch 6inch, , recessed, surface mounted. A selectable slide switch comes standard with three selectable wattage levels and three selectable color temperatures, providing the flexibility to adapt to the changing needs of the space, setting, or environment.

FEATURES:
  • Direct illumination with efficacy up to 70 lumens per watt
  • 1-10V dimming
  • 2ft 4ft 8ft size option
  • Color temperatures of 3000K, 3500K, 4000K
  • 80 CRI, standard
  • Nominal 4″ wide housing fabricated from heavy-gauge extruded aluminum
  • Surface mount or recessed, for sheetrock or various tile grid ceilings.

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED architectural linear lights, led pendant light fixtures, LED commercial downlights, LED troffer, led flat panel light and emergency LED driver.

2019年12月17日星期二

What is Beam Angle

Beam Angle — This is the angle at which light is distributed from the bulb. LEDs come in a wide variety of beam angles. The exact measurements for vary slightly from one manufacturer to the next, but in general these are the degrees for each type of flood:

1. Omni-directional: These bulbs have at least a 300 degree beam angle.
2. Wide flood: A beam angle between 90 degrees and omni-directional will give a wide flood.
3. Medium flood: A 45-90 degree beam angle will give a medium flood.
4. Narrow flood: 25-45 degrees is a medium-narrow flood, and 25 degrees or less is a narrower flood, good for a spot light.
beam angle

2019年12月13日星期五

Architectural Direct/Indirect LED Pendant Light

OKT up/down direct/indirect LED panel light is a stylish fixture designed for individual units or continuous runs in commercial and architectural interiors. Delivering over 105 lumens per watt, The linear pendant lighting provides 45% uplight and 55% downlight lighting and achieves a full range of dimming from 0-10 volts, enabling the flexibility to create the ideal ambiance for a variety of environments and applications.
• 8inchx4ft, 8inchx8ft, 1ftx4ft size options
• Replaceable internal driver,  easy to maintain
• Designed for individual units or continuous runs
• Fixture design provides 55% direct / 45% indirect light output
• Transparent edge area, elegant appearance
• 3500K, 4000K, and 5000K CCTs
• 120-277VAC / 200-240VAC
• 0-10VDC dimming
• ETL, CE, SAA, FCC
• color temperature changing optional function which is available in 3000K,3500K and 4000K.
• Easy pendant mount installation
• Emergency backup options
linear pendant lighting
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural LED linear pendant, LED commercial downlights, LED flat panel light, LED troffer and LED emergency drivers

2019年12月9日星期一

Architectural Indirect LED Troffer

The OKT Lighting TT Architectural LED Troffer is an modern design lighting solution for commercial, educational, medical, and retail applications where general-purpose ambient lighting is required. With its contemporary center transparent optics design. High performing optics allows for maximum energy savings and optimal illumination in a ultra-minimalistic shallow recessed fixture, provides a unique translucent appearance without sacrificing performance. The troffer fixture is vailable in 2×2ft, or 2×4ft configurations, that’s ideal for schools, hospitals, airports, offices, or convenience stores.

Specifications
  • Long-life LED system coupled with electrical driver to deliver optimal performance
  • 125+ lumens per watt
  • LEDs are available in 3000K, 3500K, 4000K and 5000k.
  • Standard drivers are 0-10 volt continuous dimming that work with 0-10V control dimmer.
  • Tunable white and adjustable power functions are available for your choice.
  • Input Voltage of 120-277VAC

architectural led troffer light
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural LED linear light, LED commercial downlights, T grid LED lighting , LED troffers and emergency LED driver.

2019年12月8日星期日

What Factors Affect Classroom Lighting Comfort

Natural Light
A lot of research shows that not only natural light is more popular with students, but appropriate natural light stimulation can help prevent myopia.

Illumination
Obviously, classroom lighting cannot rely on natural light alone, and artificial lighting is necessary. Illumination is one of the most important indicators of lighting systems. Basically, countries have similar standards. For example, the United States, the United Kingdom, China and other countries have stipulated that the average illuminance of the desk is not less than 300 lux. Specify the upper limit of illuminance. Although many studies have shown that high brightness (such as 1000 lux) can improve students’ attention, excessive lighting can cause physical discomfort and glare disability.
Illuminance uniformity refers to the ratio of the minimum illuminance to the average illuminance on a specified surface. Generally, the more uniform the illuminance, the higher the visual comfort. Relevant standards stipulate that the uniformity of illuminance on the desk is no less than 0.7, and that of the blackboard is no less than 0.8.
Glare and comfortable lighting environment should avoid all kinds of glare. The causes of glare include excessive brightness, uneven distribution and direct light. The national standard stipulates that the uniform glare value (UGR) of the classroom is less than the critical glare value of 19. In some industry and local standards, there are more stringent regulations, such as no higher than 16.
Strobe refers to visual and non-visual effects caused by changes in brightness or spectral distribution over time. Almost all types of light sources may produce strobes, but different types of light sources have different strobe characteristics and safety indicators. Internationally, the Institute of Electrical and Electronics Engineers IEEE, the International Commission on Illumination CIE, etc. have clearly stipulated the scope of the stroboscopic hazard. Some industries and local standards in China refer to the above standards. It should be noted that the frequency of the light output waveform greater than 3,125 Hz has already exceeded the speed of the human eye nerve response, so the test can be waived (high-frequency exemption).
Blue light hazard refers to the tension of the eyes and fatigue caused by the 400-500nm blue band in the light when the brightness is too high, and long-term exposure may cause damage to the retina. According to relevant national and international standards, blue light hazards are classified into four levels: no danger, low danger (type 1), medium danger (type 2), and high danger (type 3). Since blue light hazards only exist when the brightness is high, Therefore, lamps with a brightness of less than 10,000 cd / m2 can be regarded as a non-hazardous level and need not be tested.

Color Rendering Index (CRI)
In popular terms, it refers to the natural light (or standard light source) as the reference standard, the degree of reduction of the color of the object in the artificial lighting environment. The closer the color is to the color rendering index under natural light, the better the visual effect is. The highest value is 100, which means that the light source is exactly the same color displayed under natural light. Relevant standards require that the color rendering index (Ra) of ordinary classrooms is not less than 80, and the special occasions such as art classrooms and multimedia classroom projection areas are not less than 90.

Color Temperature(CCT)
In the classroom environment, many studies have confirmed the impact of color temperature on student learning performance. For example, studies by Sleepers (2013) show that students can concentrate more in high color temperature (6500K) lighting environment; Yan (2010) experimental results show that students have the highest learning efficiency in medium color temperature (4000K).

2019年12月5日星期四

OKT Architectural LED Direct Linear light

A single-piece regressed diffuser gives the OKT Architectural LED Direct Linear its clean, modern appearance. A clear, satin finish on its one-piece extruded aluminum housing and solid endcaps complete the seamless design. The linear pendant lightingis perfect for commercial, retail, educational, or healthcare applications where individual units or continuous runs are desired. The luminaire is available with suspended and surface mounted installation options. Available in 2ft or 4ft lengths, allows the light to change the baffle color with several optional colors or custom.

• 2ft or 4ft size option
• Designed for individual units or continuous runs
• 3000K, 3500K, 4000K and 5000K CCTs
• 120-277VAC / 200-240VAC
• 0-10 VDC dimming / Dali Dimming
• Easy surface mount or pendant installation
LG4-XXR-2
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED architectural linear lights, T grid led lighting,  led pendant light fixtures, LED commercial downlights, LED troffers and emergency LED driver.

2019年12月3日星期二

Architectural Up/Down LED Linear Pendant Lighting

OKT Architectural LED UP/Down Linear Pendant Lighting is a stylish fixture designed for individual units or continuous runs in commercial and architectural interiors. Delivering over 105 lumens per watt, The linear light provides 45% uplight and 55% downlight lighting and achieves a full range of dimming from 0-10 volts, enabling the flexibility to create the ideal ambiance for a variety of environments and applications.
• 8inchx4ft, 8inchx8ft, 1ftx4ft size options
• Replaceable internal driver,  easy to maintain
• Designed for individual units or continuous runs
• Fixture design provides 55% direct / 45% indirect light output
• Transparent edge area, elegant appearance
• 3500K, 4000K, and 5000K CCTs
• 120-277VAC / 200-240VAC
• 0-10VDC dimming
• ETL, CE, SAA, FCC
• color temperature changing optional function which is available in 3000K,3500K and 4000K.
• Easy pendant mount installation
• Emergency backup options
led linear pendant lighting
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED architectural linear lights, T grid LED lighting, LED commercial downlights, LED troffer , LED emergency drivers and led flat panel light.

2019年12月1日星期日

Health lighting

With the development of the times and social progress, human pursuit of quality of life is also constantly improving. The demand for lighting has increased from simply meeting basic lighting needs to higher demands for light quality, light health and light environment. Recently. Based on the visual effects of light and human health (visual fatigue, light hazards such as macular degeneration) and non-visual action mechanism, the light quality is essentially improved from the light source. To reduce the short-wave blue light damage caused by ordinary light sources and reduce the visual fatigue of the human eye. At the same time, in conjunction with the development of lamps, both parties will strive to promote the development of the health lighting industry, providing consumers with professional health lighting solutions to create visual comfort and promote health. A pleasant lighting environment.

Future health lighting LEDs should generate light sources that are most suitable for the current environment according to different environments, and generate light sources that are most suitable for the time according to different time points. For example, in the field of office lighting, when workers enter the fatigue period, generating appropriate light sources can improve mood, relieve fatigue, and promote mental and physical health. The combination of light source and human settlement environment is the development direction of future health lighting.

The light source essentially reduces the short-wave blue light damage caused by the ordinary light source, reduces the visual fatigue, and at the same time, combines the active scene, appropriately adjusts the spectrum, protects the eyes, and improves the visual comfort. According to the human settlement environment, the scientific and meticulous division is carried out, and through the intelligent control method, a reasonable healthy light environment solution is proposed. For education, office, catering, sports, leisure, bathing, sleeping, seven applications, and can provide customers with customized healthy light environment solutions.

2019年11月25日星期一

OKT Lighting LED Panel Lights

Panel light is a kind of modern and decorative lighting, widely used in office spaces, major retail stores, education, government, and residential facilities. LED panel light has main advantages of low-carbon energy, adapting to global energy conservation, low-carbon lifestyle trends. The life span for LED panel light is 50000 hours, equivalent to 50 times of traditional incandescent lamps, it is economy really substantial luminaries for use, becomes the preferred green fixtures of decoration and lighting.

What is OKT led panel light?

Okt lighting focus on high quality and high-end led flat panel light. our products using SMD 2835 LED is more bright and longer lifespan. High luminous efficiency and save more than 90% energy than incandescent lamp. No UV, IR or mercury is with environment friendly benefit. Ultra-thin design, simple and fashionable appearance.

Our ceiling installation panel light are ETL, cETL, DLC  listed, which is capable of retrofit application to existing fluorescent fixtures or new architectural recessed, it’s available in 1x4ft, 2x2ft and 2x4ft, with input wattages 40w and 50w. Dimming type is 0-10V dimming, efficacy has 100lm/w.

Aluminum alloy frame and PMMA plate, aluminum alloy frame is strong and not easily deformed. T-grid hock for recessed installation. Recessed inverted T-Bar ceilings, grid mount. Only 5 steps for installation within 10 minutes, economic and convenient.

community library hall VS Elliot 201706(5)

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural led linear pendantT grid led lighting,  LED downlights, LED troffers and emergency led driver.

2019年11月21日星期四

Top 10 Certification Standards for Global LED Lighting

In the current global energy shortage situation, energy conservation is an important issue we face. LED is called a new generation of green light source. Its energy saving, environmental protection and long life make LED lighting industry become the green industry that countries pay attention to. In view of the increasingly mature and rapid development of LED lighting technology, in order to standardize the emerging market of LED lighting, some important LED regional markets around the world have introduced relevant technical regulations or standards, and have put forward certification requirements for the application of LED lighting certification.

3C
The 3C certification is called the “Compulsory Product Certification System”. It is a product conformity assessment system implemented by the Chinese government to protect consumers' personal safety and national security, strengthen product quality management, and implement laws and regulations.
3C certification is mainly to try to solve the long-standing policy of multiple occurrences and duplicates in the Chinese product certification system through a package of solutions such as “unified catalog, unified standards, technical regulations, conformity assessment procedures, unified certification marks, and unified charging standards”. Accreditation, recurring charges, and non-discrimination of certification practices and enforcement actions, and the establishment of technical regulations, standards, and conformity assessment procedures consistent with international rules can facilitate trade facilitation and liberalization.

ISO9000
The certification bodies of ISO9000 quality system certification are all authorized institutions approved by the national accreditation body, and the audit of the quality system of the enterprise is very strict. For the internal enterprise, quality management can be carried out in accordance with the internationally standardized quality system that has been strictly audited, truly meeting the requirements of legalization and scientificization, greatly improving work efficiency and product qualification rate, and rapidly improving the economic and social benefits of enterprises. . For the outside of the enterprise, when the customer knows that the supplier is managed according to international standards, has obtained the ISO9000 quality system certification certificate, and has strict audit and regular supervision by the certification body, it can be sure that the company can stably produce qualified products and even The trustworthy enterprise of excellent products can safely conclude a supply and sales contract with the enterprise and expand the market share of the enterprise.

UL
UL is a shorthand for the Underwriters Laboratories. The UL Safety Laboratory is the most authoritative in the United States and the largest private institution in the world for safety testing and identification. It is an independent, profitable, professional organization that tests for public safety. It uses scientific testing methods to determine the extent to which various materials, devices, products, equipment, buildings, etc. are hazardous or harmful to life and property; to determine, prepare, and issue appropriate standards and to help reduce and prevent life. The property is subject to loss of information, and at the same time, the fact-finding business is carried out.

FCC
Established by COMMUNICATIONACT in 1934, the US Federal Communications Commission is an independent agency of the US government and is directly accountable to Congress. The FCC coordinates domestic and international communications by controlling radio, television, telecommunications, satellite and cable. Many radio applications, communications products and digital products require the FCC's approval to enter the US market. The FCC committee investigates and studies the various stages of product safety to find the best way to solve problems, while the FCC also includes radios, aircraft inspections, and more.

CE
CE certification, that is, only the product does not endanger the basic safety requirements of human, animal and goods safety, rather than the general quality requirements, the coordination directive only specifies the main requirements, the general directive requirements are standard tasks. Therefore, the exact meaning is that the CE mark is a safety pass mark and not a quality pass mark. It is the “main requirement” that forms the core of the European Directive.
The “CE” mark is a safety certification mark and is regarded as a passport that the manufacturer opens and enters the European market. In the EU market, the “CE” mark is a compulsory certification mark. Whether it is a product produced by an enterprise within the EU or a product produced by another country, in order to freely circulate in the EU market, the “CE” mark must be affixed.

MET
The MET certification mark applies to the US and Canadian markets: The MET mark with C-US indicates that the product has been tested and meets applicable US and Canadian standards and can enter both markets simultaneously.

CB
CB system (IEC system for qualified testing and certification of electrical products) is an international system operated by IECEE. The certification bodies of IECEE member countries test the safety performance of electrical products based on IEC standards. The test results are CB test report and CB. The test certificate is mutually recognized by the IECEE member states. The aim is to reduce international trade barriers that arise from the need to meet different national certification or approval criteria.

CSA
CSA is the abbreviation of the Canadian Standards Association, which was founded in 1919 and is the first non-profit organization in Canada to develop industry standards. Products such as electronics and electrical appliances sold in the North American market require safety certification. CSA is currently Canada's largest safety certification body and one of the world's most recognized safety certification bodies. It provides safety certification for all types of products in machinery, building materials, electrical appliances, computer equipment, office equipment, environmental protection, medical fire safety, sports and entertainment.

GS
The meaning of GS is that security is certified and there is also the meaning of German security. GS certification is a voluntary certification based on the German Product Safety Law (GPGS) and in accordance with the European Union Standard EN or the German Industrial Standard DIN. It is a recognized German safety certification mark in the European market.

VDE
The VDE Testing and Certification Institute in Offenbach, Germany is a research institute of the German Institute of Electrical Engineers, founded in 1920. As a neutral, independent institution, VDE's laboratories inspect and certify electrical products in accordance with German VDE national standards or European EN standards, or IEC International Electrotechnical Commission standards. In many countries, the VDE certification mark is even more famous than the national certification mark, especially recognized and valued by importers and exporters.

2019年11月19日星期二

How to Distinguish The Quality of LED Luminaire

The vicious competition of LED market price stifling, the listing of a large number of unqualified products has violated the real value of LED energy saving, long life and environmental protection. How to distinguish the advantages and disadvantages of LED lamps should start from the following aspects:

Power Factor
Low power factor, indicating that the driving power supply used, the circuit design is not good, will greatly reduce the service life of the luminaire, the power factor is low, and the life of the lamp using the lamp bead is not long.

Heating conditions of lamps – materials, structures
LED lamps are also very important for heat dissipation. Lamps of the same power factor and lamp beads of the same quality, if the heat dissipation conditions are not good, the lamp beads work at high temperatures, and the light decay will be large. Lamp life will be reduced.

LED Chips
The quality of the lamp is determined by the chip quality and packaging technology.

Drvier
The service life of the power supply is much shorter than that of other parts of the luminaire. The life of the power supply affects the overall life of the luminaire. The theoretical life of the lamp bead is 50,000-100,000 hours, and the life of the power supply is 0.2-30,000 hours, power supply design and material selection will determine the life of the power supply.

Light effect
The same lamp power, the higher the light efficiency, the higher the brightness, the same lighting brightness, the smaller the power consumption, the more energy saving.

Power efficiency
The higher the power efficiency, the higher, the higher the power consumption of the power supply itself, the greater the output power.

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural LED linear pendant, LED commercial downlights, LED flat panel light, LED troffer and LED emergency drivers.

2019年11月17日星期日

What is LED IP protection level

The LED application should pay attention to the specifications such as moisture prevention and pouring. The IP (INTERNATIONAL PROTECTION) protection level system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION). The luminaires are graded according to their dust and moisture resistance characteristics. The foreign objects referred to here include tools, human fingers, etc., which are not accessible to the live parts of the lamps to avoid electric shock. The IP protection level is composed of two digits. The first digit indicates the level of the lamp from dust and foreign objects. The second digit indicates the degree of airtightness of the lamp against moisture and water intrusion. The larger the number, the more the protection level is. high.
The first indicator number is defined:
0 No protection: no special protection for people or things outside
1 Prevent the intrusion of solid objects larger than 50mm: Prevent the human body (such as the palm) from accidentally coming into contact with the parts inside the lamp. Prevent foreign objects of larger size (greater than 50mm in diameter) from intruding.
2 Prevent the intrusion of solid objects larger than 12mm: Prevent human fingers from coming into contact with parts inside the lamp to prevent intrusion of medium-sized (12mm in diameter) foreign objects.
3 Prevent the intrusion of solid objects larger than 2.5mm: Prevent the intrusion of tools, wires or similar small objects with a diameter or thickness greater than 2.5mm into contact with the parts inside the lamp.
4 Prevent the intrusion of solid objects larger than 1.0mm: Prevent the intrusion of tools, wires or similar small objects with a diameter or thickness greater than 1.0mm into contact with the parts inside the lamp.
5 Dustproof: completely prevent foreign matter from entering. Although it can’t completely prevent dust from entering, the amount of intruded dust does not affect the normal operation of the lamp.
6 Dustproof: completely prevent foreign objects from entering, and can completely prevent dust from entering.

Second indicator number definition
0 no protection: no protection
1 Prevent dripping ingress: Drops of water (such as condensate) dripping vertically will not cause harmful effects to the lamp.
2 It can prevent dripping intrusion when tilted at 15 degrees: dripping water will not cause harmful effects when the lamp is tilted vertically to 15 degrees.
3 Prevent the intrusion of sprayed water: prevent rain, or prevent water sprayed in a direction with a vertical angle of less than 60 degrees from entering the fixture and causing damage.
4 Prevent splashing water from invading: Prevent water from splashing in all directions from entering the fixture and causing damage.
5 Prevent intrusion of sprayed water: Prevent water from the nozzles from entering the lamp from entering the lamp in all directions.
6 Prevent the intrusion of large waves: Fixtures installed on the deck to prevent damage caused by large waves.
7 Prevent water intrusion when immersed in water: The lamp is immersed in water for a certain period of time or the water pressure is below a certain standard to ensure that it is not damaged by water ingress.
8 Preventing the intrusion of water when it is sunk: The indefinite sinking of the luminaire ensures that it is not damaged by the influent water under the specified water pressure.

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural LED Linear light (T grid led lighting, led pendant light fixtures), LED downlights, LED troffer and LED emergency drivers.

2019年11月15日星期五

Fluorescent troffer vs. LED Troffers Light Fixture

Fluorescent troffer lights are a common source of office lighting.However, fluorescent troffers have a shorter lifespan and higher Lumen depreciation than LED Troffers. As Lumen output decreases, Fluorescent troffer must be replaced to not interfere with worker productivity. It may also suffer from ballast failure.
LED Troffers Light Fixture , last longer than fluorescent fixtures and do not depreciate Lumens as quickly, so they require less maintenance. You can easily find LED troffers that maintain at least 70% of the initial Lumens for years. LEDs also consume less power than other lighting alternatives to help you save money on energy costs. It is ready to upgrade to LED now.
Intro to OKT LED Troffers
Get versatility in size and style with OKT’s LED troffer fixture, Our recessed LED troffers are available in standard 1×4, 2×2 and 2×4 sizes and are offered in a center basket and architectural styles. We also have battery backup troffer and motion sensor troffer that bring functional lighting and safety together. Whatever style and size you choose, oktlighting is sure to provide greater flexibility, brighter light and bigger savings!
OKT LED Troffers Light Fixture
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED architectural led linear lightlinear pendant lighting, T grid led lighting), LED commercial downlights, LED troffers and LED emergency drivers.

What’s the Difference With Reflective Cup and Lens

What is a reflective cup and what is a lens? This problem has puzzled me a long time ago. I believe many people think that the reflector and the lens are similar in the same way as I used to, but they are different in structure and are still the same. So there are not many people to go deep into this issue.
As we all know, reflectors and lenses are secondary optics, the role is to secondary light distribution, they can be said to be the core of the light effect of the lamp, if there is no such core application, then the lamp market is about to return to the original At the stage, there are fluorescent tubes everywhere. Since it is used, let us first understand the difference between the reflector and the lens.

What is reflective cup
The lamp should know that the original light angle of the LED is about 120°. In order to achieve the use of light and achieve the desired effect, the lamp will use a reflector to control the distance, area and spot effect of the light, and the reflector is usually The form of the cup appears, and the reflector industry that appears in this form is collectively referred to as the reflector.

Reflectors themselves fall into two broad categories:
Metal reflector: generally made of aluminum, which needs to be finished by stamping, polishing, oxidation, etc. It is easy to form, low in cost and high in temperature resistance, and is easily recognized by the industry.
Plastic reflector: it needs to be demoulded, its optical precision is high, there is no deformation memory, the cost is relatively higher than that of metal, but its temperature resistance is not as good as metal cup. For high temperature lamps, it is far away. Device.
It is also worth mentioning that the light that goes from the light source to the reflector is not all the light will be refracted. This part of the light that has not been refracted is optically called the secondary spot (as shown below). The presence of the light spot has a visual mitigation effect on the team.

What is lens
Reflective cups are classified, and lenses are also classified. LED lenses are divided into primary lenses and secondary lenses. The lens we generally refer to is a secondary lens by default, which is said to be closely combined with the LED light source. Different lenses can be used to achieve the desired optical effect, depending on the requirements.
LED lens is mainly used in the market as PMMA (polymethyl methacrylate) and PC (polycarbonate). The transmittance of PMMA is 93%, while PC is only about 88%, but the latter is resistant. The temperature is relatively high, the melting point reaches 135°, and the PMMA is only 90°, so these two materials occupy the lens market almost by the advantage of each half.
The secondary lenses on the market today are generally TIR. The design of the lens penetrates the front side of the light, and the tapered surface collects and reflects all the side light. When the two lights are overlapped When you use it, you can get a perfect spot effect. The efficiency of TIR lenses is generally above 90%, and the beam angle is generally <60°, which can be applied to small angle lamps.

2019年11月10日星期日

OKT US Patent T Grid LED Linear Light

OKT Lighting obtained the US Patent(NO.10125935) for it’s brand new LED T grid linear light. This present invention relates to a T-grid LED lighting system for suspended ceiling that is convenient to maintain and update.

10

OKT T grid LED lighting is designed to replace the supporting cross tee ina suspension grid ceiling system. The whole fixture is unique combination design of led module and T grid bracket, its available in 2ft and 4ft sizes with outputs 10W or 20W choices, the luminaires delivers up to 130lm/w with UL/cUL and DLC premium approved.
More specially, OKT T-grid LED linear light input wire adopt cat 5 cable, and teh driver integrated with RJ45 connectors which allow to power 3 lamps by each driver. This specially design ensure the driver provide saft, low-voltage and smart power to the T grid light they drive, meanwhile it’s greatly reduces the cost of wiring.

This newly T grid linear light is not just an LED light fixture but a part of the ceiling assembly in new construction, which helps job side to reduce building materials and labor cost, all while saving energy.

TB-1

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are architectural led linear lights, LED commercial downlights, LED troffer and LED emergency drivers. linear pendant lighting

LED Color Temperature

In LED products, an important specification number is the color temperature, which is related to the color characteristics displayed by LED lighting products. The general lamps also have color temperature specifications. The color temperature measurement unit is based on KelvinScale, that is, in K. At the beginning, when Kelvin observed that the dissolved metal began to reach the maximum temperature in the steel plant, the color of the metal was different, and it was recorded in data units. Later, a specification sheet of LED color temperature was generated.

What is color temperature
It is expressed by the absolute temperature K, that is, the standard black body is heated, and when the temperature rises to a certain extent, the black body color begins to dark red-light red-orange-white-blue, gradually changing, when a light source and the black body have the same color, we put The absolute temperature of the black body is called the color temperature of the light source.

Color temperature under different light source environments:
The following is a color temperature comparison table used by common LED lighting fixtures:
Halogen lamp 3000K
Tungsten wire 2700K
High pressure sodium lamp 1950-2250K
Candle light 2000K
Metal halide lamp 4000-4600K
Cool color camp light 4000-5000K
High pressure mercury lamp 3450-3750K
Warm fluorescent light 2500-3000K
Clear sky 8000-8500K
Cloudy 6500-7500K
Summer noon sunshine 5500K
Afternoon daylight 4000K

LED color at different color temperatures
1. Low color temperature: The color temperature is below 3300K, the light color is reddish to give a warm feeling; there is a steady atmosphere, warm feeling; when using low color temperature light source, it can make red more vivid.
2. Medium color temperature: color temperature in the middle of 3000--6000K, people in this color without special visual psychological effects, have a refreshing feeling; so called "neutral" color temperature. When illuminated with a medium color temperature source, the blue color is Cool feeling.
3. High color temperature: color temperature is more than 6000K, light color is blue, giving people a cold feeling, when using high color temperature light source, make the object have a cold feeling.

How To Purchasing LED Lamps?

As an energy-saving and environmentally friendly product, LED lighting has been accepted by more and more consumers. However, most consumers do not understand LEDs and do not understand complex technical terms. How do consumers choose LED lighting products?
Specific to the product, how to choose LED lighting products, you can look at the following three aspects:
The led lamp is mainly composed of three parts, an aluminum casing, a drive and a lamp bead. Then, how to start from these aspects in the process of purchasing LED lamps, so as to buy the best cost-effective products?
1. Look at the aluminum casing of the LED lamp. However, all lighting products will generate heat during use. Especially for LED lamps, the heat generated by the lamps in the process of illumination is amazing. If the heat can not be released and released in time, it will seriously affect the light efficiency and life of the led lamps. As the main heat-dissipating part of the outer casing, it naturally assumes the responsibility of this heat dissipation. So, what kind of shell is the heat dissipation? First, the purity of aluminum is required. For aluminum parts, the 6063’s aerospace aluminum is the best choice, not only beautiful in appearance, but also powerful in heat dissipation. However, for larger luminaires, die-cast aluminum is the best choice. Since it is a die-casting part, it must be made of aluminum alloy. As a result, the composition of the aluminum alloy is worthy of attention. For the normal alloy ratio, heat dissipation is no problem, but some merchants add a lot of messy impurities to the alloy aluminum in order to reduce the cost, resulting in poor heat dissipation of the aluminum shell. At the time of purchase, the appearance of the outer casing should be observed, and smooth and smooth can be preferred. At the same time, pay attention to whether the heat sink has a corresponding thickness and surface area. Because the heat is mainly scattered from the heat sink, the heat sink is very important. Some people are obsessed with the heat of the shell, the better the heat, this is not necessarily.
2. Look at the driver of the LED lamp. Driven as a power unit for led lamps, it is naturally important. Involving the problem of led drive, you can consult the various parameters of the driver about the driver, such as output voltage and current, power factor, operating temperature and so on. The working voltage of 1W led lamp bead is about 3.2V, and the working current is about 320MM. If the current is too large, it is easy to increase the light decay of the lamp bead and shorten the life. If the driving power factor is too low, such as a power factor of 0.6, a 10W lamp consumes 16W of power, which is wasted. At the same time, the power factor is too low, which naturally leads to an increase in the heat of the drive itself, and the electronic component is most afraid of being heated. The increase in heat means that the temperature of the electronic component itself rises, and quality problems are prone to occur. At the same time of purchase, we must also understand the repair rate of the business. After all, the current damage of led lights is mainly driven. Through these, you can choose a better driver.
3. Look at the lamp beads of LED lamps. As the core component of the led lamp, the lamp bead is the most important. At present, there are many brands of LED chips, mainly from domestic and imported. But whether it is domestic or imported, the construction of the double gold wire lamp is the most basic, which can ensure the life of the lamp bead. When purchasing a led light, you should consult the unit’s luminous flux, color temperature, chip size and power size to determine whether the product meets your needs. The light decay and life of the lamp bead is also a question that needs to be consulted by the merchant to judge the cost performance of the lamp bead.
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED architectural linear lights, T grid led lighting, LED commercial downlights, LED troffer and emergency LED driver.

2019年11月4日星期一

How Are LED Emergency Drivers Work?

OKT Release 2nd Generation LED Emergency Driver, what is the difference with the 1st Generation?
It adopt a long-life recyclable Lithium battery, UL Listed for field installation, self-test function satisfied users requirements. All our types available in a variety of wattage, providing solutions for 8,16 and 25 watts applications.
How Are The Emergency LED Drivers Work?
AC power and emergency driver supply to the led light at the same time.
When AC power fails, OKT’s series emergency LED driver immediately switches to the emergency mode, operating the LEDs at a reduced lumen output for a minimun of 90 minutes. When AC power is restored , the emergency driver automatically returns to the charging mode.
EM-L0854-XX
LED EMERGENCY DRIVER
We have types of output voltage for different led lighting, our low voltage battery backup for external drivers fixtures, like led commercial downlights with external drivers, ceiling lights, led panel lights etc. On the country, the high voltage battery backup for internal drivers’ fixtures ,such as led bulbs, led tubes, integrate led commercial downlights etc.
OKT emergency battery pack unit is available in 4 different mounting configurations to accommodate various performance requirement and fixtures types: single flex,dual flex, Integral Non-Flex(optional),Top-Mount and Non-Flex(optional).

Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED pendant light fixtures, T grid led lighting, LED commercial downlights, surface mount led light, LED troffers and LED emergency drivers.

Tunale White LED Troffer Light

OKT Lighting launched a indirect recessed troffer with a branded design in transparent light guide, the light is more softer and architectural. It is an ideal choice for offices, schools, hospitals and retail merchandising areas applications.
OKT indirect led troffer light
Transparent Design
Through a laser etched, transparent acrylic light guide, the light in TROFFER is emitted in a TRI-LENS look, with energy savings and modern aesthetics.
Lighting designers are particularly interested in the unique transparent and indirect desgin. The transparent light guide eliminates plain ceiling, narrow space concerns and allows for a perfect fit in ceiling to complement specific architectural design ambitions of options.
添加图片说明
Tunable White And Adjustable Power Functions
Tunable white options: Available in 3000K. 3500K and 4000K by switch , or 3000K. 4000K and 5000K by switch
Wattage Selectable Options
30watts, 35watts, 40watts by dip switch (2x2ft)
30watts, 40watts, 50watts by dip switch  (2x4ft)
It is architectural lighting solution for commercial and institutional environments, including office lighting, medical , health , educational , retail, hotel ,airport, hospitality, etc.
Shenzhen OKT Lighting Co.,Ltd., established in 2008, is an innovative manufacturer specializes in developing, manufacturing commercial LED lighting fixtures. Its main products are LED pendant light fixtureled pendant light fixtures, LED commercial downlights, LED troffers, surface mount led light and LED emergency drivers.

2019年10月24日星期四

General Lighting of Bedroom

The bedroom is mainly a place for sleep and rest, sometimes restricted by living conditions, and used for work or friends and relatives. Bedroom lighting is mainly composed of general lighting and partial lighting.
First, the general lighting of the bedroom
The general lighting atmosphere of the bedroom should be quiet, warm, pleasant, soft and comfortable. Those shining, colorful lights are generally not suitable for installation in the bedroom. Due to the age, culture, and hobbies of the host, there are differences in the perceptions and standards of comfort and warmth, and the requirements for the lighting style of the bedroom are also different.

The main styles of bedroom lighting are:
1.  quiet and comfortable
This is the main trend of contemporary bedroom lighting. There are a variety of options: you can choose a simple ceiling lamp, the milky white light, and the bedroom’s light-colored walls, a piece of pure; can use the light illumination, so that the light is reflected through the ceiling or the wall, very soft and pleasant It is also possible to install a recessed ceiling light with a residential wall lamp, so that the direct light of “Starry Sky” complements the auxiliary light of “twilight”, which is more elegant and warm.

2.  luxurious style
Shows the owner’s financial strength and identity, using high-grade materials, high-end lighting and indoor luxury arrangements. Such as the golden candle lighting with Baroque style furniture, can show the French court weather, brilliant, brilliant. If you use high-quality mahogany lamps with meticulous workmanship, exquisite materials and exquisite styles, and with quaint mahogany furniture, the atmosphere is extraordinary, showing the strong national and economic strength of the owner.

3.  modern avant-garde
Pursue freedom and randomness, blending geometric figures and lines into new urban lamps, breaking through traditional concepts and embodying forward consciousness. The wall lamp on the wall can be triangular, diamond-shaped, or irregular; the table lamp on the table can be semi-circular, straight-lined; the spotlight has an angular black and white color; Flying birds, everything looks simple and chic, giving people surprises and surprises. Coupled with simple bedroom furniture, it shows the ingenuity of modern people. Because the bedroom often has two functions of rest and work, it needs low illumination during rest and sufficient illumination when working. In order to meet the requirements of the two lighting functions, two methods can be adopted: one is to install a high dimmer to control the brightness of the lamp; the other is to control the switching of various lamps in the room, and determine the number of lights to be turned on as needed.