发明名称 ELECTRONIC VIEW FINDER DEVICE
摘要 PROBLEM TO BE SOLVED: To provide an electronic view finder device which offers reduced deterioration of display quality due to internal surface reflection light therein.SOLUTION: A first circular polarization plate 12 is configured by placing a second polarization plate 5 and a first 1/4 wavelength plate 6 between a polarization separation film 4 and an ocular optical system 7, while a second circular polarization plate 13 is configured by placing a third polarization plate 9 and a second 1/4 wavelength plate 8 between the ocular optical system 7 and a protective plate 10. The first circular polarization plate 12 and the second circular polarization plate 13 has the 1/4 wavelength plate 6 and the 1/4 wavelength plate 8, respectively, positioned to inwardly face each other. Even if optical image light 14 from the polarization separation film 4 is reflected by the surface of the ocular optical system 7 or the second 1/4 wavelength plate 8, thereby producing surface reflection light 15, display quality is not deteriorated since the surface reflection light 15 is blocked by the first circular polarization plate 12.
申请公布号 JP2013235163(A) 申请公布日期 2013.11.21
申请号 JP20120107971 申请日期 2012.05.09
申请人 CITIZEN FINETECH MIYOTA CO LTD;CITIZEN HOLDINGS CO LTD 发明人 NAKAMURA MANABU
分类号 G02B27/28;G02B5/30;G03B11/00;G03B13/06;H04N5/225 主分类号 G02B27/28
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