Optical projection device

An optical projection device is provided. The optical projection device includes a light source, a housing, an imaging unit, a projection lens, and a dust-resisting element. The light source is suitable for providing a light beam, and the housing has a projection-lens-assembling opening. The imaging...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, SEA-HUANG, CHENG, SHOUIH
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	An optical projection device is provided. The optical projection device includes a light source, a housing, an imaging unit, a projection lens, and a dust-resisting element. The light source is suitable for providing a light beam, and the housing has a projection-lens-assembling opening. The imaging unit is disposed on the optical path of the light beam in the housing. The projection lens is assembled on the projection-lens-assembling opening of the housing, and disposed by the projection-lens-assembling opening. The dust-resisting element is disposed between the projection lens and the projection-lens-assembling opening. The optical projection device has superior dust-resisting ability and provides higher display quality.