The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2003
Filed:
Sep. 18, 2000
Tin M. Aye, Mission Viejo, CA (US);
Kevin H. Yu, Temple City, CA (US);
Gajendra D. Savant, Rancho Palos Verdes, CA (US);
Physical Optics Corporation, Torrance, CA (US);
Abstract
A collimating screen simulator comprising a projector and a holographic diffuser screen. The projector is adapted to project a viewable image onto a focal plane that is spaced from the projector. The focal plane has a backside and a viewing side opposite the focal plane backside. In operation, the projector is able to project the image onto the focal plane backside. The holographic diffuser screen is adapted to permit light from a source and incident upon a surface of the diffuser screen to pass through the screen. The holographic diffuser screen has a first surface facing the focal plane viewing side for receiving the incident light. The holographic diffuser screen also has a second surface opposite the first surface. The holographic diffuser screen is spaced from the focal plane viewing side by a distance effective for enabling a viewer facing the second surface of the holographic diffuser screen to see collimated light exiting the holographic screen.