发明名称 RANGING DEVICE AND AUTOMATIC FOCUSING CAMERA EQUIPPED THEREWITH
摘要 PROBLEM TO BE SOLVED: To provide a ranging device and an automatic focusing camera equipped therewith capable of obtaining exact distance information by performing accurate distance measuring operation even to a mirror surface subject. SOLUTION: In this range-finding device and this automatic focusing camera equipped therewith, a light projecting lens forming a light projecting means for radiating beam light to the subject is provided with a reflection preventing film consisting of a transparent thin film having a smaller refractive index than that of material constituting the light projecting lens at least on its one surface.
申请公布号 JP2001281531(A) 申请公布日期 2001.10.10
申请号 JP20000093187 申请日期 2000.03.30
申请人 WEST ELECTRIC CO LTD 发明人 SHINRYO MASASHI
分类号 G01B11/00;G01C3/06;G02B7/32;G03B13/36;(IPC1-7):G02B7/32 主分类号 G01B11/00
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