US 2008/0304024 A1Published application

Optical engine for a projection display device

AssigneeYoung Optics Inc.

InventorsWan-Chiang Wang, Chia-Chang Lee

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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.

Claims6

Dependent claims

An optical engine for a projection display device, comprising:

a housing including a base wall, and a surrounding wall that extends from a side of said base wall and that cooperates with said base wall for defining a receiving space with an opening;
a light source module disposed at a side of said housing for providing an illuminating light beam into said receiving space;
an imaging unit including a display element and an optical lens set disposed in said receiving space, said optical lens set being operably associated with said light source module and said display element;
and
a projecting mechanism including
a lens barrel having a first barrel end and a second barrel end,
a projecting lens disposed at said second barrel end of said lens barrel, and
a coupling element formed integrally with said lens barrel and disposed at said first barrel end of said lens barrel, said coupling element being configured to have a size and shape corresponding to those of said opening, and being disposed for covering said opening and sealing said receiving space.

5 more elements

Dependencies are inferred from the claim text.