Projector

Details Projector Projector

2007-01-09

2007-01-09

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S031000, C353S033000, C353S099000, C353S102000, C353S122000, C348S744000, C349S009000

Reexamination Certificate

active

11252539

ABSTRACT:
A projector includes: an illumination device including a light source that emits a parallel illuminating light beam, lens integrators each having a first lens array to split the illuminating light beam into a plurality of secondary light beams, a second lens array, and a superimposing lens that superimposes the secondary light beams; an electro-optic modulating device that modulates the illuminating light beam; a projection optical system that projects the modulated illuminating light beam; a mode-selecting device that selects a normal mode in which an image-forming region is illuminated in lengthwise or crosswise directions, and a persistence-of-vision-relaxed mode in which the image-forming region is illuminated in lengthwise or crosswise directions and partially illuminated in the other direction; and a scanning system to scan the image-forming region of the electro-optic modulating device along the other direction in synchronization with a frame rate of the electro-optic modulating device when in a persistence-of-vision-relaxed mode.

REFERENCES:
patent: 2004/0192430 (2004-09-01), Burak et al.
patent: A 2002-148712 (2002-05-01), None
Taiichiro Kurita, Picture Quality of Hold Type Display for Moving Images, NHK Science and Technical Research Laboratories, 1-10-11, Kinuta, Setagaya-ku, Tokyo 157-5810, pp. 55-60. (With English Translations).

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