According to the Municipal Market Supervision Bureau, with the arrival of the school season, children are about to start doing homework again. While working late at night and writing hard, they are always inseparable from the protection of a desk lamp. Do you know what are the re

Municipal Market Supervision Bureau introduced that with the arrival of the school season, children are about to start doing homework again. While working late at night and writing hard, they are always inseparable from the protection of a desk lamp. Do you know what are the requirements for adjusting desk lamps and setting up desk lamps? For details, see ↓How to adjust the lamp of

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color temperature can be simply understood as the temperature of the color. When the color temperature is around 3000K, it is yellow and a little dim; if it exceeds 5000k, it is blue and begins to be dazzling.

For desk lamps that can adjust the color temperature, it is best to adjust the color temperature to within 4000K when used at night.

GB/T 9473-2017 "Property Requirements for Desk Lamps for Reading and Writing Works" stipulates that for LED lamps whose color temperature is not adjustable and whose nominal related color temperature is higher than 4000K, there should be a warning that includes the following content: This lamp is not suitable for use at night.

illuminance is the brightness of the light source illuminating the desktop. If the illumination is too low, or the illumination is uneven, it will be bright and dark, which can easily lead to visual fatigue.

GB/T 9473-2017 "Reading and Writing Desk Lamp Performance Requirements" are divided into two levels: A and AA. The AA standard requires that the light source be a fan-shaped reading and writing area with a center of half a meter, and the edge brightness must also be ≥250lx.

AA grade proves that desk lamps have stronger lighting capabilities, but if they are too bright, it will also affect vision. We should pay attention to two points when using AA table lamps:

lowers the light source flush or slightly higher than the children's eyes, so that the light should not directly hit the eyes;

lowers the brightness to make children's eyes comfortable to avoid reflected light being too bright and dazzling.

General reading and writing work lighting requirements

GB/T 9473-2017 "Property Requirements for Desk Lamps for Reading and Writing Work Work" requires the light-shielding requirements of desk lamps. When the height is 400mm away from the desktop and the horizontal is 600mm away from the geometric center of the light source cavity orifice, the surface brightness of all light-transmitting parts, light sources, reflectors, etc. should not be greater than 2000cd/m.

According to the table lamp shading test in the standard, some experts recommend that the table lamp be placed slightly below the line of sight to avoid direct light from the eyes causing visual fatigue.

However, the height of the child's eyes from the reading and writing desktop may be lower than 400mm, so the height of the desk lamp should be adjusted according to the actual height of the child's eyes from the desktop. How to put the

desk lamp?

should be placed on the left or right? Or right in front? If the desk lamp is placed incorrectly, it will easily reflect glare on the book and affect the reading effect.

The Ministry of Education’s "Guidelines for Prevention and Control of Myopia in Different Stages of Schools, Elementary Schools, Middle Schools, etc." advocates that “When there is insufficient light, dual-light lighting should be assisted with table lamps, and the table lamps should be placed in front of the opposite side of the writing hand.”

To avoid shadows affecting reading, the desk lamp should be placed in front of the idiotic hand and let the shadows cast to the back of the idiotic hand.

The angle of the lampshade should also be paid attention to, so that the light should be shined directly on the books and screens, rather than on the faces. If you can easily see the glare on the outside of the light bulb and the lampshade, it means that the angle needs to be adjusted.

Is the bedroom light turned on?

If the headlight is turned off, the surrounding area of ​​the desk lamps in the whole room will be brighter. This difference in light and darkness will cause uneven illumination within the eye line of sight, resulting in constant adjustment of the pupil size, and inducing eye fatigue.

Experts recommend that when using desk lamps at night, the main lighting should be turned on to ensure sufficient light illumination, and avoid excessive contrast between the bright spots in the reading area and the surrounding area, causing eye fatigue.

Adjusting our desk lamps can create a more comfortable eye environment, but relying on desk lamps alone cannot protect our eyesight. Doing homework is important, but you must also combine work and rest, ensure adequate sleep every day, and participate in outdoor activities more often.

Editor in charge Ni Liqi

Source Pudong release