发明申请
- 专利标题: Speckle removing light source and lighting apparatus
- 专利标题(中): 散斑去除光源和照明装置
-
申请号: US11920916申请日: 2005-07-11
-
公开(公告)号: US20090080054A1公开(公告)日: 2009-03-26
- 发明人: Yasuharu Koyata , Yoshihito Hirano , Kiyohide Sakai , Masao Imaki , Shinsuke Shikama , Jiro Suzuki , Takao Endou , Kouhei Teramoto , Shigenori Shibue
- 申请人: Yasuharu Koyata , Yoshihito Hirano , Kiyohide Sakai , Masao Imaki , Shinsuke Shikama , Jiro Suzuki , Takao Endou , Kouhei Teramoto , Shigenori Shibue
- 国际申请: PCT/JP2005/012737 WO 20050711
- 主分类号: G02B26/02
- IPC分类号: G02B26/02 ; H01S3/10
摘要:
Provided are a speckle removing light source capable of removing speckle by using laser light whose wavelength is temporally changed and a lighting apparatus for producing an image from which the speckle is removed. Provided is a speckle removing light source, including: a light source for outputting laser light; and a light frequency modulator for changing a wavelength of the laser light, in which: the wavelength of the laser light outputted from the light source is temporally changed by the light frequency modulator; and the light frequency modulator has a predetermined period set for changing the wavelength of the laser light. Also, provided is a lighting apparatus, including: a spatial light modulator illuminated with the laser light outputted from the speckle removing light source to produce an image, in which the spatial light modulator has a period set for producing the image, and the period is longer than the period for changing the wavelength of the laser light by the light frequency modulator.
公开/授权文献
- US07724413B2 Speckle removing light source and lighting apparatus 公开/授权日:2010-05-25
信息查询