Optical engine for a projection display device

Details Optical engine for a projection display device Optical engine for a projection display device

2011-03-29

2011-03-29

Lee, John R (Department: 2878)

Optics: image projectors

Lens support

C353S119000

Reexamination Certificate

active

07914156

ABSTRACT:
An optical engine for a projection display device includes a housing, a light source module, an imaging unit, and a projecting mechanism. The housing includes a base wall and a surrounding wall cooperating with the base wall for defining a receiving space with an opening. The light source module is disposed at a side of the housing for providing an illuminating light beam into the receiving space. The imaging unit is disposed in the receiving space, and includes a display element and an optical lens set. The projecting mechanism includes a lens barrel having first and second barrel ends, a projecting lens disposed at the second barrel end, and a coupling element formed on an outer surface of the lens barrel adjacent to the first barrel end. The coupling element is configured to have a size and shape corresponding to those of the opening, and is disposed to cover the opening and to seal the receiving space.

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