发明名称 SUPERIMPOSITION PLATE FOR FINDER
摘要 PROBLEM TO BE SOLVED: To arrange a plurality of microprisms as closely as possible. SOLUTION: At an incidence hole of a pentagonal roof, a superimposition plate 32 is provided over a focus plate where a subject image obtained by a photography optical system is formed. A microprism group 52 is formed on the reverse surface of the superimposition plate 32. The microprism group 52 has a 1st prism array R1 and a 2nd prism array R2, which are arranged vertically by turns on a finder picture plane. The 1st prism array R1 is composed of a plurality of 1st microprisms 52a provided adjacently in the right-left direction of the finder picture plane. The 2nd prism array R2 has a 2nd microprism 52b. The 2nd microprism 52b is provided at a position corresponding to between two adjacent 1st microprisms 52a. COPYRIGHT: (C)2004,JPO&NCIPI
申请公布号 JP2004219910(A) 申请公布日期 2004.08.05
申请号 JP20030009594 申请日期 2003.01.17
申请人 PENTAX CORP 发明人 KANEKO HIDEFUMI;ABE TETSUYA;SUGIYAMA AKIHIRO;KABETA ATSUO
分类号 G03B13/24;G02B5/04;G02B7/28;G03B13/06;G03B17/18;G03B17/20;(IPC1-7):G03B13/24 主分类号 G03B13/24
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