Light modulator using large area light sources

Details Light modulator using large area light sources Light modulator using large area light sources

1990-07-02

1991-09-17

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346160, G01D 942, H04N 121

Patent

active

050499017

ABSTRACT:
A light modulator capable of using large area light sources consists of a light source such as an arc lamp imaged on a two dimensional light valve, preferably of the deformable mirror type. The light valve is imaged onto a light sensitive material and this image is scanned along the light sensitive material. The information to be imaged on the light sensitive material is entered into the first row of the light valve and as the image of the light valve is scanned along the material, the information in the first row is transferred to subsequent rows at a direction and rate keeping the imaged data stationary relative to the exposed material. By using a large number of rows, high light collection efficiency, high resolution and high data rates can be achieved at the same time. This overcomes the low brightness limitations of large area light sources such as arc lamps and incandescent lamps.

REFERENCES:
patent: 4560994 (1985-12-01), Sprague
patent: 4571603 (1986-02-01), Hornbeek et al.
patent: 4888724 (1989-12-01), Marom et al.

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