Douglas A Nutter

US Patent:

20070252954, Nov 1, 2007

Filed:

May 24, 2004

Appl. No.:

10/852728

Inventors:

James McGuire - Pasadena CA, US
William Cassarly - Mason OH, US
John Rogers - Monrovia CA, US
Douglas Nutter - Monrovia CA, US

International Classification:

G03B 21/14

US Classification:

353020000

Abstract:

Various embodiments involving structures and methods for illumination can be employed, for example, in projectors, head-mounted displays, helmet-mounted displays, back projection TVs, flat panel displays as well as other optical systems. Certain embodiments may include prism elements for illuminating, for example, a spatial light modulator. Light may be coupled to the prism in some cases using fiber optics or lightpipes. The optical system may also include a diffuser having scatter features arranged to scatter light appropriately to produce a desired luminance profile. Other embodiments are possible as well.