Patent library
The patents
Paul's inventions, documented one page at a time — each with a plain-English explanation, the technical record, and its drawings as they are added.
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US 5,136,426
Laser Projection Apparatus
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.
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US 5,365,288
Image Mover
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.