ToolHuts

Herramientas prácticas para trabajos de precisión

Calculadora de Tamaño de Pantalla para Cine al Aire Libre

Compare los ángulos de visión del público cercano y lejano con las dimensiones de pantalla, los límites de tamaño y el brillo ideal en oscuridad.

in
ft
ft
deg
deg
Screen size10.9 x 6.1ft
Near-seat angle48.8deg
Far-seat angle24.6deg
Diagonal for far target184in
Diagonal for near limit137in
Calculated brightness before ambient light44.9fL

Brightness is the ideal screen-luminance calculation using delivered lumens. Outdoors, stray light and the lack of a dark enclosure can reduce perceived contrast much more than this number suggests.

Cómo funciona

How to use it: enter screen, audience-depth and measured or conservatively estimated delivered lumens. Edit near and far angle targets.

Formula. Viewing angle uses screen width and seat distance. Foot-lamberts = delivered lumens x gain / screen area in square feet.

Example. A 150-inch 16:9 screen is about 10.9 ft wide and 6.1 ft high.

Ejemplo con los datos actuales

El resultado anterior utiliza exactamente estos valores. Esta captura se incluye al imprimir para cotejar la salida con las medidas originales.

Screen diagonal
150 in
Nearest seat
12 ft
Farthest seat
25 ft
Delivered lumens
3000
Screen gain
1
Minimum far-seat angle
30 deg
Maximum near-seat angle
45 deg

Resultado principal: Screen size: 10.9 x 6.1 ft.

Antes de usar el resultado

  • 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.

Limitaciones

This cannot determine wind safety, rigging, weather protection, electrical safety or local rules. Moonlight, street lights, screen material and projector calibration affect contrast. Secure outdoor screens to manufacturer specifications and never use unsafe improvised anchors.

Preguntas frecuentes

Can I project before sunset?

Usually with much weaker contrast. Projected black is only as dark as the illuminated screen, so waiting for darkness often matters more than adding modest projector output.