发明申请
- 专利标题: PROJECTION WITH LENSLET ARRANGEMENT ON SPECKLE REDUCTION ELEMENT
- 专利标题(中): 带有减速元件的延长装置的投影
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申请号: US12469751申请日: 2009-05-21
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公开(公告)号: US20100296064A1公开(公告)日: 2010-11-25
- 发明人: Barry D. Silverstein , Gary E. Nothhard , Joseph R. Bietry , Robert Metzger , Andrew F. Kurtz
- 申请人: Barry D. Silverstein , Gary E. Nothhard , Joseph R. Bietry , Robert Metzger , Andrew F. Kurtz
- 主分类号: G02B27/48
- IPC分类号: G02B27/48 ; G03B21/00
摘要:
In a coherent light projection system including an image forming system, a relay system, a speckle reduction element, and a projection subsystem, the relay system can have a first f-number, and the projection subsystem can have a second f-number less than the first f-number. The relay system can have a first working distance, and the projection subsystem can have a second working distance less than the first working distance. The image forming system can project an initial image having a first size, and an intermediate image can have a second size greater than or equal to the first size. The speckle reduction element can have a curved surface through which the intermediate image is transferred. The speckle reduction element can include a lenslet arrangement formed on a surface thereof. The speckle reduction element can be moved in a direction parallel to an optical axis of the speckle reduction element.
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