月份：2013年2月

led design for new led lights

LED lights with its unparalleled energy-saving, environmental protection, long life, high controllability technology advantages, in recent years become the world’s most promising high-tech one, officially opened the prelude to a comprehensive alternative to traditional lighting, semiconductor lighting technology innovation is changing centuries the history of traditional lighting. With the application of LED technology in the lighting field, LED lighting products in the world set off a storm of green energy saving, green lighting products industry as. Increasing energy consumption, and some even predicted: “in the next 10 years, LED lighting products will be the only product to replace the traditional high-pressure sodium lamps, incandescent lamps, fluorescent lamps led design, table lamps lighting LED lamps to be universal, not only need to substantially reduce costs, but also need to address the problem of energy efficiency and reliability, and how to solve these problems, share the design of high efficiency and high reliable LED lamps.

Do not use the bipolar power led design devices

led design for new led lights

Experts pointed out that the bipolar power devices are cheaper than the MOSFET, generally about 2 cents, so some designers use bipolar power devices in order to reduce the cost of LED driver, this will seriously affect the reliability of the circuit, because with LED drive circuit board temperature enhance effective working range of the bipolar device is rapidly shrinking, this will lead to device failure in the temperature rise which affects the reliability of the LED lamps, the correct approach is to choose MOSFET devices, the service life of the MOSFET devices much longer than bipolar devices.

Try not to use electrolytic capacitors

LED driver circuit Do not use electrolytic capacitors in the end? Supporters and opponents, supporters believe that the board temperature control, turn to reach the purpose to extend the life of electrolytic capacitors led design, for example, choose a life span of 105 degrees for a high temperature of 8000 hours electrolytic capacitor, electrolytic capacitor life estimation formula based on prevailing “temperature 10 degrees lower doubling of life expectancy, it is to work in an environment of 95 degrees life of 16,000 hours, 32,000 hours working life in an environment of 85 degrees in 75 Degree of working life of 64,000 hours, if the actual operating temperature is lower, then life will be longer! Seen in this light, as long as the selection of high-quality electrolytic capacitor drive power of life is not any impact.

 

led tube lights in lumen

In recent years, the strengthening of public awareness of energy saving LED lighting technology matures, to some extent, facilitated the initial formation of the LED lighting market, and there is a growing trend. LED lights on the market, however, has also exposed an intractable problem led tube lights, the LED’s dazzling and spot light directional problem.

For LED dazzling problems, the manufacturers are using a variety of methods, with brushed PC mask with frosted masks using special phosphor material, but these methods are not ideal, drawing mask can eliminate glare, but spot phenomenon is more serious, a slightly longer time in this lamp eye fatigue, long hours this lamp with the eyes, but also lead to eye astigmatism; while using frosted and milky white mask optical loss too much, is very poor.

LED lighting is a market has a bright future in the industry have suggested that engineers just formed in this market, concerned about the efficiency of LED lamps, the luminous flux and the life outside, do not ignore the problem of LED lighting comfort.

led tube lights in lumen

However, using optical diaphragm, eyes intuitive observation feeling of each LED is brighter, but not dazzling, the diaphragm LED fluorescent light becomes more uniform, and the viewing angle is significantly wider. This diaphragm works is to hash irradiation the diaphragm above LED point light source into surface light source uniform output so that you can solve the problem of glare spot and widen the illuminated area. Addition, the diaphragm transmittance rate of more than 90 control limited impact led tube lights.

Using optical diaphragm, not only can eliminate the LED spot specific, and can also widen the irradiation angle. Since the LED fluorescent lamp is a regular arrangement of two rows or three rows, so each point between the light source emits light there will be voids, so that within a certain distance on the generation of a flare; optical diaphragm, optical diaphragm point light source of the incident light is uniformly diffused become divergent light source emits light becomes very uniform, completely solve the spot to solve problems.

In addition, LED light-emitting directional strong irradiation angle of about 120 degrees, it is easy to produce lighting blind spot; optical film, optical film, the unique diffusion can light irradiation range expanded to about 180 degrees, so you can effectively eliminate lighting blind spot led tube lights.

LED fluorescent optical diaphragm, LED fluorescent lighting can make the same number in the same area of ​​space, the diaphragm LED fluorescent absence of irradiation blind spots, light uniformity, lighting effects are much more than ordinary LED fluorescent. And the required lighting area is larger, this advantage is more obvious.