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:
Jan. 13, 2004
Filed:
Sep. 30, 1997
Jeffrey Jacobsen, Hollister, CA (US);
John C. C. Fan, Chestnut Hill, MA (US);
Stephen A. Pombo, Campbell, CA (US);
Matthew Zavracky, Plympton, MA (US);
Rodney Bumgardner, San Jose, CA (US);
Alan Richard, Wrentham, MA (US);
Wen-Foo Chern, Wayland, MA (US);
Kopin Corporation, Taunton, MA (US);
Abstract
The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a viewfinder in a electronic image record system such as a digital camera or video camera. The matrix display can be transmissive or reflective using sequential lighting. The system can use an alternating common voltage which allows reduced power consumption. In addition an internal heating system in the display allows the system to be used at low temperatures.