Projector

Optical: systems and elements – Lens – With field curvature shaping

Reexamination Certificate

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Details

C359S253000, C349S008000, C353S034000

Reexamination Certificate

active

11174650

ABSTRACT:
Aspects of the invention can provide a projector including a illumination system, an electro-optic modulator, and a projection system. The illumination system can include device that emits a substantially parallel illumination light beam to the side of an illuminated region, a first lens array that has plural small lenses for dividing the illumination light beam into a plurality of partial light beams, a second lens array that has plural small lenses corresponding to the plural small lenses of the first lens array, a polarization conversion element for converting into polarized light an unpolarized light included in the illumination light beam emerging from the second lens array, and a superposition lens for superposing the partial light beams on the illuminated region. The electro-optic modulator can modulate the illumination light beam in response to image information. The projection system can project the illumination light beam modulated by the electro-optic modulator.

REFERENCES:
patent: 7055961 (2006-06-01), Huibers
patent: 2005/0185144 (2005-08-01), Imahase et al.
patent: A-09-120067 (1997-05-01), None
patent: A-2002-148712 (2002-05-01), None
Taiichiro Kurita; “Picture Quality of Hold Type Display for Moving Images”; Technical Report of IEICE; The Institute of Electronics, Information and Communication Engineers; Jun. 1999; pp. 55-60. (with abstract and translation).

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