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. 15, 2001
Filed:
Jul. 28, 1999
Geraint Owen, Palo Alto, CA (US);
Laurence M. Hubby, Jr., Palo Alto, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
An optical display system includes a source of white uncollimated light, a color separator for separating the white light into spectral components, a reflective ferroelectric light valve for spatially modulating the spectral components, and a polarizing beam splitter for directing vertically polarized light towards a display lens. The system further includes a corrective film disposed in an optical path between the white light source and the light valve. The film, which may be made of a ferroelectric material or other birefringent material, ensures that retardance of the light valve is approximately 180 degrees or some other desired angle over a spectrum of interest. In this manner, the light valve is achromatized by the film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile