Translation guide
A curtain designed to block all outside light, often used in bedrooms or media rooms. In Japanese, this is typically expressed with specific compound words or descriptive phrases.
A curtain that completely blocks light, usually with a special lining.
Referring to the type of curtain when shopping or specifying features.
Means 'curtains with light-blocking function'. Common in product descriptions.
この遮光機能付きカーテンは省エネ効果もあります。
These blackout curtains also have an energy-saving effect.
遮光 is the key term for light-blocking. It can be combined with other words like 遮光シート (light-blocking sheet) or 遮光ブラインド (blackout blinds).
The most common and direct term for a blackout curtain. 遮光 means 'light-blocking'.
寝室に遮光カーテンをつけました。
I installed blackout curtains in the bedroom.
A descriptive phrase meaning 'curtains that block light'. Less technical than 遮光カーテン.
光を遮るカーテンを探しています。
I'm looking for curtains that block out light.
Literally 'dark curtain', often used for stage or photography backdrops, but can refer to heavy blackout fabric. Less common for home use.
暗幕を張って部屋を真っ暗にした。
We put up blackout curtains and made the room pitch dark.
Japan has a rating system for light-blocking; 1級 (first grade) is the highest, blocking 99.99% of light. Useful when shopping.
遮光1級カーテンなら昼間でも部屋が真っ暗になります。
With grade 1 blackout curtains, the room becomes pitch dark even during the day.