The eyes are the windows of the soul, and we can see the appearance of the lover and the rich world of thousands of changes, all through the eyes. Therefore, the protection of the eyes is also receiving more and more attention. What are the types of eye protection lamps? How to buy eye protection?

First, the type of eye protection lamp

1, high frequency light

China's AC power is 50Hz, which is 50 times per second. Therefore, the electric lights directly using the alternating current are flashing. The flashing frequency is generally 100 times/second, which is double the grid frequency, that is, 100 times per second. The human eye can perceive the change to within 30 Hz, and the light changes of 100 times per second (from dark to dark, then dark to light, ...) are not perceived by us, but studies have said that these changes Action) will have an effect on the human eye. If strong light acts on the human eye, the pupil will shrink in the eye; for weak light, the pupil will enlarge.

2, DC lamp

DC lighting, it does not flash at all, to achieve true stroboscopic, and the light emitted when used is continuous and uniform light, very bright, but not glare, very soft, greatly relieves visual fatigue, solves the inductance Ballast fluorescent lamps damage the stroboscopic problem of vision.

3, electric heating lamp (incandescent lamp, halogen lamp)

Ordinary incandescent lamps are actually an eye-protection lamp. Because the alternating current heats the filament first, the filament heats up and then illuminates. Because the filament has a heat capacity, the filament is still hot when the power source changes, and the light and dark changes are not as intense as fluorescent lamps (fluorescent lamps). Thus, there is an eye-protecting lamp that uses a filament having a large heat capacity.

Eye protection effect chart

4, more eye protection lamp

Consider the impact of light reflection on the human eye. If you add a filter, you can effectively increase the amount of light you need and reduce unwanted light. Such as "3M58 ° excellent light". The average person and the commonly used reading angle are around 58°, however the 58° angle is also the most serious angle of glare. The 3M58° excellent light effectively solves this problem and thoroughly filters the glare of the glare in the 58° reading angle.

Eye protection effect chart

Second, eye protection purchase skills

1, to see the light

1) stable brightness, no flicker; (2) soft light; (3) light is relatively uniform, not a small point light source; (4) lamp / lampshade design is reasonable, no glare (eyes see bright spots), some lampshades built-in The grid-like reflector effectively reduces the contrast between the illuminated and non-illuminated areas, and the 3-year-old baby is not wary of these light sources.

2, to see the documents

Product certification and safety certificate must be complete, and there must be a national safety compulsory certification mark CCC, which is often referred to as the "3C" certification mark. These documents are actually a way for specialized agencies to check for consumers. The eye protection lamp for 3-6 year old baby needs more understanding from parents.

3, depends on the use and after-sales service , the use and maintenance methods should be simple, and must have a repair address and phone.

4, to facilitate the replacement of the lamp holder, the lamp holder must be replaceable, and is a common standard interface (such as E27-coarse spiral head, E14-fine spiral lamp head), so that in case the lamp head is broken, it is convenient to replace the lamp cap.

The above is the introduction of the types of eye protection lamps and the purchase techniques of Xiaobian, I hope to help you buy. More eye care 10 content, please continue to pay attention to the net.

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