发明名称 PHOTOMETRIC DEVICE AND CAMERA
摘要 <P>PROBLEM TO BE SOLVED: To provide a photometric device and a camera in which the chromatic aberrations are corrected properly. <P>SOLUTION: A photometric device includes a photometric sensor 14, a photometric optical system 15 that guides light to the photometric sensor 14, and a lens barrel member 24 that supports the photometric optical system 15. The photometric optical system 15 includes a first optical member 20 having a fixed position with respect to the photometric sensor 14, and a second optical member 22 including a diffraction optical element 21, and the second optical member 22 is held between the lens barrel member 24 and the first optical member 20. <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2012252089(A) 申请公布日期 2012.12.20
申请号 JP20110123500 申请日期 2011.06.01
申请人 NIKON CORP 发明人
分类号 G02B7/02;G02C13/00;G03B7/099;G03B7/0997;G03B17/02;G03B19/12;H04N5/225 主分类号 G02B7/02
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