Lighting device and projector

A technology of lighting device and optical part, applied in projection device, image reproducer using projection device, instrument, etc., can solve problems such as bad influence of viewing image
CN1991569AInactive Publication Date: 2007-07-04SEIKO EPSON CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SEIKO EPSON CORP
Publication Date
2007-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A lighting device includes: a light source which supplies a beam; a shaping optical portion which shapes the beam into a linear luminous flux approximately parallel to a first direction; and a scanner which causes the linear luminous flux to scan in a second direction approximately perpendicular to the first direction.
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Description

technical field

[0001] The present invention relates to an illuminating device and a projector, in particular to the technology of an illuminating device using laser light. Background technique

[0002] In recent years, along with the increase in output of semiconductor lasers and the development of blue semiconductor lasers, projectors, displays, and the like that display images using laser light have been proposed. Because the laser has a single wavelength, it has high color purity, high coherence, and easy shaping. Compared with the ultra-high pressure mercury lamps used in the past, the laser light source has advantages such as small size and instantaneous lighting. Therefore, it is expected that high-quality images can be displayed with a compact structure by using laser light. In the case of replacing the conventionally used ultra-high pressure mercury lamp with a laser light source, in order to obtain sufficient brightness, it is considered to use an array laser in ...

Claims

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