Increasing Projector Contrast and Brightness through Light Redirection

Authored by: Reynald Hoskinson , Boris Stoeber

Noval Advances in Microsystems Technologies and their Applications

Print publication date:  July  2013
Online publication date:  April  2016

Print ISBN: 9781466560666
eBook ISBN: 9781466560673
Adobe ISBN:


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A projection display creates an image on an auxiliary surface, separate from the ­projector itself. For this reason, the images can be made very large, able to be viewed by groups of people, for instance, at a cinema. Typically, projectors are structured with a light source separate from the image-forming element, or light valve. As much of the light as possible from the light source is channelled to the light valve, which in turn relays the formed image through the projection optics to the screen.

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