发明授权
US07554737B2 Illumination device and method using adaptable source and output format
有权
照明装置和使用适应源和输出格式的方法
- 专利标题: Illumination device and method using adaptable source and output format
- 专利标题(中): 照明装置和使用适应源和输出格式的方法
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申请号: US11073893申请日: 2005-03-07
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公开(公告)号: US07554737B2公开(公告)日: 2009-06-30
- 发明人: Richard M. Knox , Kevin Hathaway , David Kappel , Robert E. Fischer , Biljana Tadic-Galeb
- 申请人: Richard M. Knox , Kevin Hathaway , David Kappel , Robert E. Fischer , Biljana Tadic-Galeb
- 申请人地址: US TX Lago Vista
- 专利权人: Riake Corporation
- 当前专利权人: Riake Corporation
- 当前专利权人地址: US TX Lago Vista
- 代理机构: Law Offices of Mark L. Berrier
- 主分类号: G02B5/02
- IPC分类号: G02B5/02
摘要:
Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.