Bedroom low illuminance: How dark should the room be before sleep

A bedroom in a pre-sleep state, with very low overall illumination, approximately one-tenth of that in a living room. Light sources are only in two places: small wall lamps on both sides of the bed head, with deep shades and light directed entirely downwards, illuminating only the bedside tables and the upper edge of the duvet; and an extremely faint toe-kick light along the wardrobe. There are no ceiling lights at all, walls and ceiling remain dark, and furniture is only visible as outlines and a slight reflection on edges. The color temperature is extremely warm, about 2400K, close to candlelight, containing no blue light. The texture of the duvet and fabrics is softly revealed by the low-angle warm light. The entire room is quiet, subdued, and suitable for eyes before falling asleep. Avoid: Adding main ceiling lights and recessed lights, using high color temperature white light, lighting up walls and ceiling, making the entire room uniformly illuminated.

Translated from Chinese by AI.

一間臥室的睡前狀態,整體照度非常低,大約只有客廳的十分之一。光源只有兩處:床頭兩側的小壁燈,燈罩深、光完全朝下,只照亮床頭櫃與棉被的上緣;以及衣櫃邊一段極微弱的地腳燈。天花完全沒有燈,牆面與天花維持在深色,家具只看得見輪廓與邊緣的一點反光。色溫極暖,約 2400K,接近燭光,不含藍光。棉被與布料的質感在低角度的暖光下柔和地顯現。整個房間安靜、下沉,適合入睡前的眼睛。避免:加裝天花主燈與嵌燈、使用高色溫的白光、把牆面與天花打亮、讓整個房間照度均勻。