Click "Follow" in the upper right to share with you the [Light Selection] and [Light Design] useful information. During the school season in September, many parents will buy desk lamps for their children. There are many styles of desk lamps on the market, and the price gap is als

Click "Follow" in the upper right to share with you the [Light Selection] and [Light Design] useful information.

htmlSchool season starts in September, many parents will buy desk lamps for their children. There are many styles of desk lamps on the market, and the price gap is also very large. The expensive ones are thousands of yuan, and the cheapest ones can be bought for dozens of yuan. Most people choose to buy high-priced desk lamps because they care about their eyes, but not expensive desk lamps can protect their eyes. What is the standard for eye protection desk lamps? …

Today I will teach you how to choose eye protection desk lamps.

strobe, blue light , color rendering index, illuminance, color temperature , these five parameters are the key to measuring whether an eye protection desk lamp is qualified.

strobe

strobe refers to the fluctuation of the luminous flux of the electric light source at a certain frequency. We often find stripes distribution when we aim at the light source of the desk with our mobile phones, which is caused by strobes. Studies have found that light source strobe is closely related to neurological diseases such as migraine , headache, autism, visual fatigue and discomfort. How to identify whether the eye protection desk lamp has strobes?

The easiest way is to check whether the desk lamp has the IEEE PAR1789 strobe-free certification, which is the most authoritative certification for strobe-free in the world.

In addition, you can also turn on the phone's camera and aim at the lighting product under test. By observing whether there are streaks in the phone screen, you can determine whether the product has strobes. However, this method cannot 100% exclude strobes, but it can be used as a reference for choosing a desk lamp.

Blu-ray

Excessive blue light will cause vision damage, so when choosing an eye protection desk lamp, you should check the test report provided by the merchant.

Color rendering index

Color rendering index is the degree to which the light source restores the real color of the object. Due to the special working principle, LED lights cannot 100% restore the real color of the object. Generally speaking, the color rendering index of excellent eye protection desk lamps should be above 90%-95%.

illuminance

illuminance refers to the luminous flux of visible light received per unit area. According to relevant standards, qualified eye protection lamps (light source) are 40cm vertically away from the desktop and can still provide 500Lux.

color temperature

color temperature represents a unit of measurement that contains color components in light. The warm light and cold light we usually refer to changes in color temperature. The color temperature below

300K gives people a warm feeling, 3000--5000K is the intermediate color temperature, which is relatively refreshing in the experience, while over 5000K makes people feel cold.

reads for a long time under light with too small or too large color temperature, which can easily make people tired. Studies have shown that the color temperature in the range of 3500-5000K is closer to mild natural light and is relatively suitable for reading.

When purchasing eye protection desk lamps, remember to check the five parameters of strobe, blue light, color rendering index, illuminance, and color temperature.

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