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:
Jul. 10, 2007
Filed:
Dec. 02, 2004
Barret Lippey, Belmont, MA (US);
Stephen R. O'dea, Wilmington, MA (US);
James F. Shanley, Westboro, MA (US);
Michael O'connell, Northborough, MA (US);
Barret Lippey, Belmont, MA (US);
Stephen R. O'Dea, Wilmington, MA (US);
James F. Shanley, Westboro, MA (US);
Michael O'Connell, Northborough, MA (US);
Bose Corporation, Framingham, MA (US);
Abstract
Methods and apparatus for forming two orthogonally polarized beams of light from an unpolarized beam of light using one of at least two different image modes, the forming includes a color filtering process that is based on the image mode being used, and projecting the two orthogonally polarized beams to form an image on a viewing surface. Methods and apparatus for separating an unpolarized light beam into four beams as a function of wavelength and polarization; selectively modulating the four beams respectively using four light valves; and combining the four modulated beams to generate two orthogonally polarized light beams.