ToolHuts

Outils pratiques pour un travail de précision

Calculateur de Taille d'Écran de Projection selon la Pièce

Trouvez la plus grande image adaptée à votre distance d'objectif, votre ratio de projection et la hauteur de mur utilisable.

in
in
Usable diagonal137.7in
Image width120.0in
Image height67.5in
Estimated brightness35.6fL
Limiting factorThrow geometry

The optical image fits within the entered wall height.

Fonctionnement

How to use it: enter usable lens distance, throw ratio, wall height, aspect ratio, lumens and screen gain. The tool finds the optical image and reduces it if the wall height is tighter.

Formula. Image width = throw distance / throw ratio. Diagonal comes from aspect geometry. Estimated foot-lamberts = lumens x gain / screen area in square feet.

Example. At 144 inches and 1.20 throw ratio, image width is 120 inches; a 16:9 image is about 137.7 inches diagonally before wall-height limits.

Exemple avec les saisies actuelles

Le résultat ci-dessus utilise exactement ces valeurs. Cet instantané est inclus à l’impression pour comparer la sortie aux mesures d’origine.

Available lens-to-screen distance
144 in
Projector throw ratio
1.2
Usable wall height
72 in
Aspect width
16
Aspect height
9
Rated projector lumens
2000
Screen gain
1

Résultat principal: Usable diagonal: 137.7 in.

Avant d’utiliser le résultat

  • Measure from the datum or reference edge described by this tool, and do not mix inside, outside and centerline dimensions.
  • Keep inputs in the displayed units and preserve more precision than the final cutting or purchasing tolerance requires.
  • When the result is close to a limit, verify it with a test piece, field measurement, manufacturer drawing or qualified project professional.

Limites

Rated lumens are not guaranteed calibrated lumens, and brightness changes with image mode, zoom, lamp age, ambient light and screen behavior. Check the projector's official zoom, lens-shift and installation limits.

Questions fréquentes

Why can wall height reduce diagonal?

The projected aspect ratio fixes width-to-height. If the calculated image is too tall, both dimensions must shrink together to avoid cropping.