How to place and adjust the table lamp in the study?

 The color temperature can be simply understood as the temperature of the color. When the color temperature is around 3000K, it tends to be yellowish and a bit dim;For desk lamps that can adjust the color temperature, it is best to adjust the color temperature to within 4000K when used at night.

Illuminance is the brightness of the light source shining on the table. If the illumination is too low or uneven, one piece will be bright and the other will be dark, which will easily lead to visual fatigue.

GB/T 9473-2017 "Performance Requirements for Reading and Writing Work Desk Lamps" is divided into two grades of contrast: A level and AA level. The AA standard requires the light source to be a fan-shaped reading and writing area with a half-meter center, and the edge brightness should also be ≥ 250lx.
• Reduce the light source level or slightly higher than the children's eyes, so that the light should not shine directly on the eyes as much as possible;
• Turn down the brightness to make it comfortable for children's eyes and avoid glare from too bright reflected light.

According to the shading test of desk lamps in the standard, some experts suggest that desk lamps should be placed slightly below the line of sight to avoid eye fatigue caused by direct sunlight.
However, the height of the children's eyes from the reading and writing table may be lower than 400mm, so the height of the desk lamp should be adjusted according to the actual height of the children's eyes from the table.

In order to avoid shadows affecting reading, the desk lamp should be placed obliquely in front of the dominant hand, so that the shadow is projected to the back of the dominant hand.
Also pay attention to the angle of the lampshade, so that the light directly shines on the books and screens, rather than on people's faces. If you can easily see the glare around the bulb and shade, the angle needs to be adjusted.

Can't turn on the bedroom light?



If you turn off the headlights, the whole room is brighter only around the place where the desk lamps are placed. This difference in light and shade will cause uneven illumination within the eye's line of sight, causing the pupil, the light-adjusting tissue of the eye, to constantly adjust its size and induce eye fatigue.