Optical: systems and elements – Lens – With field curvature shaping
Reexamination Certificate
2007-01-09
2007-01-09
Mack, Ricky (Department: 2873)
Optical: systems and elements
Lens
With field curvature shaping
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).
Choi William
Mack Ricky
Oliff & Berridg,e PLC
Seiko Epson Corporation
LandOfFree
Projector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3790953