Projector

Details Projector Projector

2007-04-17

2007-04-17

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S097000, C353S099000, C353S102000

Reexamination Certificate

active

11322218

ABSTRACT:
A projector including an illumination device, an electra-optic modulator and a projection optical system. The illumination device is provided with a light source that emits a substantially parallel luminous flux to the side of a region to be illuminated; a first lens array including a plurality of first small lenses; a second lens array including a plurality of second small lenses corresponding to the first lens array; and a superimposing lens that superimposes the partial luminous fluxes coming from the second lens array. The projector further including a light shielding member provided with a stray light elimination member disposed to be substantially optically conjugate with the plurality of first small lenses and the electro-optic modulator for adjusting the cross-section shape of the luminous flux; and a rotating prism for scanning the luminous flux from the light shelding member in synchronization with a frame rate of the electro-optic modulator.

REFERENCES:
patent: 2002/0180932 (2002-12-01), Shimizu et al.
patent: 2004/0046946 (2004-03-01), Kim
patent: 2005/0179872 (2005-08-01), Akiyama
patent: 2006/0092390 (2006-05-01), Akiyama
patent: A 2002-148712 (2002-05-01), None
Kurita, “Picture Quality of Hold Type Display for Moving Images,” Technical Report of IEICE, pp. 55-60, 1999, with translation.

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