发明名称 |
Viewfinder for single lens reflex cameras |
摘要 |
A viewfinder for a single lens reflex camera of the T.T.L. light measurement type, wherein light measurement is apt to be affected by external light entering through an eyepiece, includes a diopter adjusting mechanism and an eyepiece shutter. The eyepiece is divided into at least a movable first optical element and a fixed second optical element. The diopter adjusting mechanism is capable of shifting the first optical element for diopter adjustment within a predetermined space which extends along the viewfinder optical axis and is at least partially common to a space that the eyepiece shutter occupies at an advanced position for blocking the viewfinder optical path. Operation of a manually operable member for shifting the eyepiece shutter toward the advanced positon causes the first optical element to be retracted toward the rear away from the predetermined space prior to the shift of the eyepiece shutter into the advanced position.
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申请公布号 |
US4206988(A) |
申请公布日期 |
1980.06.10 |
申请号 |
US19790029211 |
申请日期 |
1979.04.12 |
申请人 |
MINOLTA CAMERA K K |
发明人 |
EGAWA, TAKESHI;MIYAMOTO, TAKAYOSHI;YAMAZAKI, YASUO |
分类号 |
G03B19/12;(IPC1-7):G03B13/02 |
主分类号 |
G03B19/12 |
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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