Projection display and optical integrator

Details Projection display and optical integrator Projection display and optical integrator

2006-07-05

2009-11-03

Dowling, William C (Department: 2851)

Optics: image projectors

Unitary plural refracting surfaces

C353S020000, C359S619000, C359S621000

Reexamination Certificate

active

07611246

ABSTRACT:
A projection display makes it possible to minimize the costs of a polarization conversion element, and concurrently makes it possible to improve illuminance nonuniformity and optical utilization efficiency and to accomplish physical apparatus compactness. An optical integrator used in the projection display is configured such that, in comparison to the number of arrangements of polarization conversion units in a predetermined direction, a split number of an array lens in the same direction is greater.

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