होम> ब्लॉग> Jiangsu inspection and quarantine recommendations to buy LED desk lamps should be "four look at one look"

Jiangsu inspection and quarantine recommendations to buy LED desk lamps should be "four look at one look"

December 10, 2023

In mid-to-late September, the students of Guang University have entered a normalized learning life. At present, LED desk lamps have become an indispensable household appliance for many students to study and live. According to the introduction of the national laboratory staff of the Jiangsu Inspection and Quarantine China Inspection and Testing Center, the choice of eye protection table lamps should pay attention to "four views and one look."

First look at the strobe. Definition: refers to the fluctuation of the luminous flux of an electric source at a certain frequency. Effects: Migraine, headache, autism, visual fatigue and discomfort. Please pay attention to the purchase: Before buying, please ask the public to pick up the phone and use the lens to align the lamp light source. If there is a stripe or jitter on the screen of the mobile phone, there is obvious strobe. Please do not buy the strobe lamp.

Then check the Blu-ray. Definition: Blue light with a wavelength between 380 and 500 nanometers, also known as High Energy Visible Light (HEV), is the spectral segment with the strongest energy in visible light. Impact: Long-term operation in a short-wavelength blue light environment, the possibility of inducing macular degeneration in the elderly will increase. Please note that when purchasing: regular channel purchase, the product will usually identify the corresponding level of photobiosafety. The photobiosafety level is divided into: exemption level, low hazard level, medium hazard level and high hazard level. Test-certified luminaires only allow exemption levels and low-hazard levels.

Then check the color temperature. That is, the cold or warm light we usually say, the color temperature value determines the softness of the light. Impact: Long-term use of table lamps that do not match the color temperature will affect vision. Please note that the color temperature range is suitable from 4000K to 5000K, which can be viewed on the product identification. The color temperature is from 4000K to 4300K. The light line is slightly redder and softer, suitable for primary school students. The color temperature value of 4500K to 5000K is suitable for middle school students and above.

Next, look at the color rendering index. The ability to display colors under the illumination of light. Impact: Insufficient color rendering index can easily lead to eye fatigue. Please pay attention to the purchase: the current slightly larger brand display index is above 80, a good point is 90 or even 95 or so.

Finally, Jiangsu inspection and quarantine reminder: Please ask the consumer to look for the "3C" certification of the product, China implements mandatory CCC certification for LED desk lamps, and the products with the certification qualifications are in compliance with relevant quality and safety standards, usually on the product nameplate. Or mark on the package.


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