Screen formats

The screen is the surface on which we project light.  

How big?

                               Fig 29

Screen size is usually specified using the diagonal measurement, in inches (like a TV set). In order to calculate the width and height it is necessary to know the screen format.


There are now a number of screen aspect ratios i.e. the relative proportion of the rectangular screen.


The ratios between width:height:diagonal for these formats are:


Original video and PC (e.g. XGA [1024 x 768]): 4:3:5
Some CAD displays (e.g. SXGA [1280 x 1024]):  5:4:6.4
Video widescreen (e.g. HD [1920 x 1080]): 16:9:18.3
Computer widescreen (e.g. WUXGA [1920 x 1200]): 16:10:18.9
35 mm slide: 3:2:3.6


Measuring screen size

                            Fig 30

Note that a 100” video format screen measures 2032 x 1524mm (3.1m2), whereas a 100” 16:9 format screen measures 2,220 x 1249mm (2.8m2).

Screen gain > 


dnp denmark is the worldwide large-screen centre of Dai Nippon Printing Co. Ltd. With a 65 % market share, dnp is the world’s leading supplier of optical projection screens for high quality display solutions.

The dnp optical screen portfolio includes an extensive range of optical projection screens for both front and rear projection screen applications for all environments including home cinema / home theatre, meeting rooms / conference rooms, control rooms, signage & advertising and more.

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