发明名称 |
Focusing controller |
摘要 |
A focusing controller for photographic apparatuses includes: a distance meter which detects film-to-object distance to calculate and emit a distance signal; a lens shifting distance calculating device which calculates a lens shifting distance for effecting focusing in a focusing optical system on the basis of the distance signal by using one or two or more linear expressions; and a driving device for driving the focusing optical system in accordance with the lens shifting distance; the focusing controller allowing both the lens shifting amount for the focusing optical system and the reciprocal of film-to-object distance to be set at equal intervals.
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申请公布号 |
US5485240(A) |
申请公布日期 |
1996.01.16 |
申请号 |
US19940283173 |
申请日期 |
1994.08.03 |
申请人 |
NIKON CORPORATION |
发明人 |
TSURU, HIROYUKI;SATO, SHIGEMASA;TERUNUMA, HIROSHI |
分类号 |
G03B13/36;G02B7/28;G02B7/32;(IPC1-7):G03B13/36 |
主分类号 |
G03B13/36 |
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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