发明名称 |
Anamorphic illuminating optical system |
摘要 |
An illuminating optical system for use in a microfilm reader/printer or the like for illuminating a film comprises an axially symmetric lens system and an anamorphic lens system. The anamorphic lens system includes a condenser lens opposed to a light source. A microfilm reader/printer having such an illuminating optical system causes the axially symmetric lens system to illuminate the microfilm during a reading operation, and the anamorphic lens system to illuminate the film during a printing operation.
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申请公布号 |
US5260831(A) |
申请公布日期 |
1993.11.09 |
申请号 |
US19920986278 |
申请日期 |
1992.12.07 |
申请人 |
MINOLTA CAMERA KABUSHIKI KAISHA |
发明人 |
SUZUKI, SANAE;KANAI, NOBUO |
分类号 |
G02B13/08;G03B21/11;G03B21/20;(IPC1-7):G02B13/08 |
主分类号 |
G02B13/08 |
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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