发明名称 |
Imaging optical instrument |
摘要 |
An imaging optical instrument causes light emitted from a plurality of light sources arranged adjacent an object to image on recording surfaces of a photosensitive or thermosensitive material. The optical instrument includes a two-sided telecentric optical system having a first lens disposed adjacent an entrance end of a lens barrel, and a second lens disposed adjacent an exit end of the lens barrel, and an aperture stop disposed adjacent a meeting point of a rearward focus of the first lens and a forward focus of the second lens. The aperture stop has an aperture formed centrally thereof for allowing passage of beams that should contribute to image formation, and a refracting portion surrounding the aperture for refracting beams that should be intercepted and causing these beams to leave the lens barrel from the exit end thereof.
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申请公布号 |
US6927924(B2) |
申请公布日期 |
2005.08.09 |
申请号 |
US20040971106 |
申请日期 |
2004.10.25 |
申请人 |
DAINIPPON SCREEN MFG. CO., LTD. |
发明人 |
UEYAMA KENJI |
分类号 |
G02B3/00;G02B5/00;G02B7/02;G02B13/22;G03B9/02;G03B27/32;(IPC1-7):G02B9/00;G02B13/02;G06K9/46;G01J1/42;H04N3/02 |
主分类号 |
G02B3/00 |
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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