The Paul Linden Archive Explore Archive

Patent library

The patents

Paul's inventions, documented one page at a time — each with the actual patent drawings, a plain-English explanation, and the full technical record.

FIG. 3 of U.S. Patent 5,136,426 — the laser projection apparatus.
FIG. 3 of U.S. Patent 5,136,426 — a schematic of the laser projection apparatus: two lasers and a dye laser combined through mirrors and lenses onto a rotating scanner and projection optics.

U.S. Patent US 5,136,426

Issued 1992

Laser Projection Apparatus

Patent
US 5,136,426
Issued
August 4, 1992
Inventors
Paul A. Linden
Assignee
Advanced Laser Projection, Inc.

A way to build a large, full-color video image out of red, green, and blue laser light — combining and balancing the beams through an optical system so the projected picture is bright, sharp, and correctly colored.

Issued on August 4, 1992 — the birthday of Paul's wife, Elaine. He's proud that his most important patent shares such a meaningful family date.

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FIG. 2 of U.S. Patent 5,365,288 — a perspective view of the image-mover optical assembly: spinning and tilting mirrors that reposition the projected image before the horizontal scanner.

U.S. Patent US 5,365,288

Issued 1994

Image Mover

Patent
US 5,365,288
Issued
November 15, 1994
Inventors
Paul A. Linden, Lloyd G. Cross, Duane S. Dewald
Assignee
Advanced Laser Projection, Inc.

Once you can project a large laser image, you often want to move it — slide it across a wall, rotate it, or resize it — without physically moving the whole projector. This patent describes an optical assembly that steers and repositions the projected image itself.

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