スクリーンゲイン計算機 — ゲイン比からの輝度 & フットランバート | TheaterOwl

Calculating Screen Gain is a fundamental and crucial step in home theater design. It is not just about measuring distance; it must be designed based on scientific evidence to maximize human visual perception limits and immersion. Incorrect settings can cause eye strain or fail to take advantage of resolution benefits. This tool complies with industry standards such as THX and SMPTE guides to provide the most precise data.

仕組み

This system utilizes complex trigonometry and optical formulas. Based on the input variables (screen size, resolution, viewing angle, etc.), it simultaneously calculates the minimum distance where pixels do not appear clustered and the maximum immersion distance that fills the entire field of view. All results are reflected in real-time, suggesting figures optimized for the user's environment.

活用 사례

• When simulating the installation space before purchasing new Screen Gain equipment
• When wanting to optimize the performance of an existing home theater system and achieve professional-level tuning
• When needing to find a compromise for the best audiovisual experience within space constraints

スクリーンゲイン計算機の使い方

画面サイズ、ゲイン比、プロジェクターのANSIルーメンを入力し、フットランバート単位の輝度を計算します。

THXは12〜22フットランバートを推奨。ISF SDR目標値は16 fL。標準マットホワイト=ゲイン1.0、グレー0.8〜1.0、ハイゲイン1.3〜2.5。

ゲインが高いほど輝度は上がりますが、視野円錐は狭くなります。ホームシアターではゲイン1.0〜1.3が推奨されます。