发明名称 |
Optical instrument operable in a light room, for reproducing an original with a variable magnification |
摘要 |
An apparatus for reproducing a picture with variable magnification under normal daylight conditions. An interceptor eliminates flare. The position of the interceptor changes as a function of the magnification. High quality images can be obtained without increasing the size of the apparatus. The apparatus also facilitates tracing of the image. The apparatus can be easily maintained.
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申请公布号 |
US5003341(A) |
申请公布日期 |
1991.03.26 |
申请号 |
US19890360025 |
申请日期 |
1989.06.01 |
申请人 |
DAINIPPON SCREEN MFG. CO., LTD. |
发明人 |
OHTORII, MASAKAZU |
分类号 |
G03B27/32 |
主分类号 |
G03B27/32 |
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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