Laser imaging using a spatial light modulator

Details Laser imaging using a spatial light modulator Laser imaging using a spatial light modulator

1999-02-17

2000-06-27

Metjahic, Safet

Optics: image projectors

Composite projected image

Multicolor picture

353122, 349 25, 345 32, G03B 2100

Patent

active

060798335

ABSTRACT:
An image projection system is provided for generating an energy efficient output representative of a desired input image. The image projection system includes a light source positioning device for directing the light from a light source onto a spatial light modulator. An image source provides the desired image to the spatial light modulator and also image information to a light source position controller for coordinating the light source positioning device, such that the light from the light source impinges substantially only the area of the spatial light modulator which contains the desired image. In particular, the controller actuates the light source positioning device by using a predefined scan that corresponds to the desired image. The spatial light modulator modulates the light with the desired input image and generates an output representative of the desired image. A beam brush may also be used for changing the width of the projection beam from light source, thereby improving image resolution and maximizing energy conservation.

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