Apparatus and methods for illuminating optical systems

Details Apparatus and methods for illuminating optical systems Apparatus and methods for illuminating optical systems

2007-03-27

2007-03-27

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C345S008000

Reexamination Certificate

active

10852679

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.

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