The advantages and disadvantages of LED the desk lamp that shield an eye
Desk lamp generally used in reading, writing, design, and reviews and other office or study lighting etc. To people who do the work of a desktop, maintain a good visual environment in the work place, to improve the quality of learning and office, improve work efficiency and protect the healthy body is very good. In the use of desk lamp, if low light intensity of illumination and color rendering, and can cause readers visual fatigue, long-term and well-lit stroboscopic or glare can give a person the visual nerve system bring serious harm, so it is important to pay special attention to the quality of the lighting. Only fully analyzed characteristics and choose the right lighting lamps and lanterns, to make our study and work more comfortable and happy, at the same time, make life become more rich and colorful, from the perspective of satisfy human lighting comfortable, healthy and in consideration of energy saving. LED the desk lamp that shield an eye main drawback is as follows: (1) quality is uneven, the LED industry low barriers to entry, all kinds of LED chip quality difference is very big, and ordinary consumers can't distinguish between, so the market is random (2) the start stage, landscape lighting, LED lighting is mainly applied in large environment, with eyes, is not suitable for high current is given priority to with test (3) the blue light intensity is high, the blue light damage is strong, the eyes very vulnerable
Suggest choose dc lamp At the moment there is a kind of complex light dc the lamp that shield an eye is good, with international patent. You can keep an eye on the lamp that shield an eye the lamp that shield an eye on market and other dc: one of the most essential difference between the high frequency the lamp that shield an eye (most of the domestic brand) : China's ac 50 hz, namely change 50 times per second. So direct use of alternating current (ac) electric light, are flashing, flashing frequency is commonly 100 times per second, is the grid frequency doubling, namely change 100 times per second. Other (international brand) : the lamp that shield an eye is high frequency variations of the lamp that shield an eye, not flash. Flash badly to the human eye can't see or added a filter, take temporary solution not effect a permanent cure. LED lights: not the lamp that shield an eye. LED energy-saving lamp tube is clean and healthy, but not the real meaning of the lamp that shield an eye. The first: the lamp that shield an eye is trichromatic lamp, light color is very good; And the LED is a monochromatic light source, can have influence on the color of the eye nerve, fatigue. Although its working voltage of direct current (dc), there is no flicker problem, but because of the LED chromatography is too narrow, can't use in the place with high demand with the eye, can only be applied to general auxiliary lighting (used in exterior lighting, light boxes, etc.). Second: the lamp that shield an eye is a special fluorescent tube; LED is a semiconductor light emitting diode. Dc the lamp that shield an eye: the alternating current into direct current (dc), first with dc lamps (high technical content), no flash, no stroboscopic, real and when using the light close to natural light, very bright, but not dazzling, very soft. And other kinds of electromagnetic radiation, more the lamp that shield an eye without any radiation. Of course the price will not low.
4) light source does not contain toxic heavy metals such as tungsten, mercury. The tungsten filament in the semiconductor light source without them no fluorescent lamp, energy-saving lamp of mercury inside. (5) safety. 12 v low voltage dc power supply; No easy broken glass parts, ensure the safety of users. 36 v is the minimum voltage, can feel the body is less than 36 v power supply is safe to human body. Don't even need to 3 c certification. Dc power supply, to eliminate the high frequency alternating current (ac) of electromagnetic radiation pollution.
8) adapter generally smaller than LED lights, life is short, the transformer is more easily LED the desk lamp that shield an eye main advantages as follows: (1) environmental: no pollution, no ultraviolet, infrared and thermal radiation; (2) low energy design, 150 hours of electricity once, desk lamp in the case of provide sufficient lighting, power as small as possible. Use the light source of semiconductor technology production has a very high photoelectric conversion efficiency, allows you to provide electricity, can maximum limit into light. Dc power supply, which can effectively eliminate the extra electromagnetic loss, further reducing the overall energy consumption, so the power is less than 7.5 w (3) long life light source, 10 years don't have to change the bulb, is 100 times as ordinary light bulbs
4) monochromatic light source, chromatography is too narrow, can have influence on the eyes of the optic nerve, fatigue Small (5) the LED lamp bead, loss of a few years later will slowly to change, easy to cause the whole lamp scrap (6) basic color temperature is above 5000 k, pure white is very bright, more dazzling (7) LED the lamp that shield an eye with poor workmanship will produce slight stroboscopic and radiation.
