AUTOMATIC FOCUSING
申请(专利)号: GB19850030919
专利号: GB2185118A 主分类号: G03B3/10 申请权利人: THE * JOLLY
GOOD
PRODUCTION COMPANY LTD 公开国代码: GB 优先权国家: GB
申请日: 1985-12-16 公开公告日: 1987-07-08
分类号: G03B3/10
发明设计人: BARON STEVEN
CAREL * BENTINCK VAN
SCHOONHETEN 申请国代码: GB
优先权: 19851216 GB
8530919
摘 要 附 图:
摘 要:
A camera has two or more alternative focusing devices. As shown, one of three focusing devices (14, 16 and 18) is selected by positioning a toggle switch (20) in one of three respective positions I, II and III, switch (20) being biased to
position II. A single IR beam is emitted at aperture (28) and a bounced beam is received (a) at apertures (30) and (32) from distant subject (22) using device (14, (b) at apertures (30) and (34) from near subject (24) using device (16) and (c) at apertures (32) and (34) from intermediate subject (26) using device (18). Two or three emitted beams may be employed instead of a single emitted beam. 主权项:
**WARNING** start of CLMS field may overlap end of DESC **. /n
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