Study desk illuminance: Balance between screen and paper

A night scene of a study desk, with a lit screen and open paper documents simultaneously on the desk. The desk lamp is positioned to the side and front of the screen, with the light spot falling on the paper documents, making the text clearly readable, but without illuminating the screen surface at all, so there are no reflections or light spots on the screen. In addition to the desk lamp, there is also a soft supplementary light washing the wall, preventing the background behind the screen from being completely black—because if the brightness difference between the screen and the background is too large, the eyes will quickly fatigue. Overall, three brightness levels are formed: the screen is brightest, followed by the paper, and the background wall is lowest but not zero. The desk lamp arm blocks the light source, so the lamp beads are not visible when seated. Avoid: Allowing the desk lamp to shine on the screen and create reflections, depicting the background wall as completely black, using a ceiling main light instead of a desk lamp, or making the paper and screen brightness identical.

Translated from Chinese by AI.

一張書桌的夜景,桌上同時有一台亮著的螢幕與攤開的紙本文件。桌燈的位置在螢幕的側前方,光斑落在紙本上,讓文字清楚可讀,但完全沒有照到螢幕表面,螢幕上沒有任何反光與光斑。桌燈之外,牆面也有一道柔和的補光,讓螢幕後方的背景不至於全黑——因為螢幕與背景的亮度差如果太大,眼睛會很快疲勞。整體形成三個亮度層級:螢幕最亮、紙本次之、背景牆最低但不為零。桌燈的燈臂遮住光源,坐著時看不到燈珠。避免:讓桌燈照到螢幕產生反光、把背景牆畫成全黑、使用天花主燈取代桌燈、讓紙本與螢幕亮度相同。