发明名称 CIRCULAR POLARIZATION FILTER WITH SPECIAL FUNCTION FOR DIGITAL CAMERA
摘要 <P>PROBLEM TO BE SOLVED: To provide a circular polarization filter which is capable of fulfilling user's desire to represent the flow of water in a waterfall or a ravine like a silken thread or represent fallen leaves and flower petals floating on a water surface in a swirling pattern. <P>SOLUTION: The circularly polarizing filter is formed of a light reducing lens filter in which a polarizer and a 1/4 phase difference plate are disposed between a first filter lens and a second filter lens and the first filter lens has a light transmittance of 20% or less. <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2013117646(A) 申请公布日期 2013.06.13
申请号 JP20110265395 申请日期 2011.12.05
申请人 MARUMI KOKI KK 发明人 KARASAWA YUTAKA
分类号 G02B5/30;G02B5/00 主分类号 G02B5/30
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