Beam Size
FREE CALCULATOR
The Beam Size Calculator (BSC) makes it easy to calculate the beam size of a projected image at any distance between the projector lens and the projector screen.
Do you need to plan the opening for a projector porthole or check that the projector beam will miss architectural features? The BSC does it all.
This calculator is provided entirely free of charge, with no credit card required.
The calculator provides a PDF file upon completion.
View our cutting-edge projector range at SRND Store
Instructions for Data Entry
In order to create the report, the Beam Size Calculator needs some information about the project. Cinema Tools does not store or record any data that is entered into this form.
Project Name:
Enter the project name so that the report can be easily identified.
Prepared By:
Enter the name of the person creating the report
Calculation Units:
Select the measurement units that will be used in the other form fields
Screen
Calculation Based On:
Select if data to be entered in the Value field refers to the width, height or diagonal of the target image size
Value:
Enter the target screen size using the units selected under Calculation Units
Screen Aspect:
Enter the Aspect Ratio of the target screen for example 1.78, 2.37
Throw Distance:
Enter the distance between the front of the projector lens and the projector screen using the units selected under Calculation Units
Measurement Points
The calculator allows data for up to four distances to be entered. Where less than four distances are required, leave the unused fields blank and they will be ignored by the calculator.
The reference point for the distance should be the projector lens.
Distance from Lens:
Enter the distance from lens to the required calculation point using the units selected under Calculation Units
Beam Size Top View
The Beam Size Top View page of the report is used to show the width of the projected image beam at the requested measurement points.
The right hand data bar details:
- Screen Width in mm and inches
- Screen Height in mm and inches
- Screen Diagonal in mm and inches
- Screen Aspect Ratio
- Beam Width in mm and inches at Measuring Point in mm and inches
Beam Size Side View
The Beam Size Side View page of the report is used to show the width of the projected image beam at the requested measurement points.
The right hand data bar details:
- Screen Width in mm and inches
- Screen Height in mm and inches
- Screen Diagonal in mm and inches
- Screen Aspect Ratio
- Beam Width in mm and inches at Measuring Point in mm and inches