发明名称 |
COHERENT LIGHT SOURCE DEVICE AND PROJECTOR |
摘要 |
Provided are a coherent light source device and projector that avoid the problem, which unavoidably occurs when coherent light from a semiconductor laser or other laser is projected, that the uniformity of the projected light is degraded as a result of speckle. This coherent light source device has a first light-emission region formed by a coherent light source and is provided with the following: first optics that project the light from the first light-emission region so as to form a second light-emission region; a light-deflecting means, near the second light-emission region, that deflects a light beam involved in the formation of the second light-emission region; second optics placed after the light-deflecting means; and a light-mixing means, placed after the second optics, for mixing the angle and position components of light beams incident upon the input end thereof. An image conjugate to the first light-emission region is formed at a distance by the second optics, and a third light-emission region substantially conjugate to the exit pupil of the first optics is formed at the input end by the second optics. The light-deflecting means continually moves so as to progressively change the direction in which the abovementioned light beam is deflected. |
申请公布号 |
WO2013125549(A1) |
申请公布日期 |
2013.08.29 |
申请号 |
WO2013JP54083 |
申请日期 |
2013.02.20 |
申请人 |
USHIO DENKI KABUSHIKI KAISHA |
发明人 |
SHIMIZU, MIKIO;OKAMOTO, MASASHI;MIURA, YUICHI;TOMA, TAKAHIRO |
分类号 |
G02B27/48;G03B21/00;G03B21/14 |
主分类号 |
G02B27/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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