Projection device and projection method

Details Projection device and projection method Projection device and projection method

2007-01-08

2011-10-18

Tran, Trang U (Department: 2422)

Television

Video display

Color sequential

C348S742000, C348S744000, C348S273000

Reexamination Certificate

active

08040440

ABSTRACT:
A projection device comprises a light source, a color wheel which is inserted into an optical path of the light source and in which a plurality of color segments are formed along a peripheral direction of the color wheel. The color segments are configured to transmit a plurality of wavelength band components in the white light in a time division manner during a rotation of the color wheel. A light source driving unit alternating-current discharges the light source at a period shorter than a rotation period of the color wheel while reverses a polarity at a timing to switch the segment of the color wheel inserted into the optical path.

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