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In today's society, the pace is accelerating. Children are facing heavy schoolwork pressure, and parents both want their children to succeed and worry about their eyesight. Therefore, buying an eye protection lamp has become a required course for parents. It can face a variety of eye protection lamps and dazzling business promotion. Parents should not only ask: what brand of eye protection is good, how to choose eye protection?
After investigation, it is understood that the country has not yet introduced specific indicators and standards for eye protection lamps. To achieve the standard of eye protection, not only to achieve the effect of high-frequency flash, but also to take the national "read and write work table lamp performance requirements", CIE international standard "indoor workplace lighting guide S800-2001" as the basic basis. The main conclusions are as follows.
The eye protection lamp should have a relatively uniform light distribution:
The recommended value of the uniformity of the light working surface is <3.0. To remove direct glare, observe at a height of 400mm and a parallel distance of 600mm, and you cannot see the light source of the desk lamp. To achieve the eye protection effect, the table lamp needs to be equipped with a lens, a grille, etc., to prevent direct light from forming glare, and it is absolutely unnecessary to expose the bulb.
No strobe:
According to the CIE international standard "Guide to Indoor Workplace Lighting S800-2001", the strobe frequency of the table lamp should be higher than 25000rpm, but the table lamp should meet the national EMI / EMC electromagnetic radiation detection. High color rendering and suitable color temperature, the color rendering should be greater than 80%, the table lamp color temperature is 3300K ~ 5300K is more appropriate. Pay attention to the logo on the fluorescent tube when buying: rr is daylight color, rn is warm white, these two colors can play a role in eye protection; and rl is cold white, rb is white, there is no eye protection.
Filter UV:
At present, most desk lamps use fluorescent bulbs, which will generate ultraviolet rays after long-term aging. Taking into account the long-term desk writing, the lampshade of the table lamp is better if it has an ultraviolet filter.
Reduce reflected glare:
When reading text on coated paper, there is often a mirror-like glare, which is called reflected glare. The brightness of reflected glare is very high, and it may damage the lens and retina after entering the eye, which will increase the chance of young people suffering from myopia and cataracts in the elderly. Adding a polarizing plate to the table lamp is a good solution. When buying, pay attention to whether there is a design in this respect. 8 Choose an environmentally friendly low-emission eye protection table lamp. High-frequency radiation and electromagnetic radiation have serious effects on children. Mainly depends on the design and material.
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