发明名称 Objective lens for use in optical pickup apparatus and optical pickup apparatus
摘要 An objective lens for use in an optical pickup apparatus, comprises a first lens molded with a plastic and having an optically functional section, flange section provided around the periphery of the optically functional section, and a first contacting section provided on the flange section; and a second lens molded with a plastic, located opposite to the first lens and having an optically functional section, a flange section provided around the periphery of the optically functional section, and a second contacting section provided on the flange section. The first lens and the second lens are joined in such a way that the first contacting section and the second contacting section are brought in contact with each other.
申请公布号 US2004032671(A1) 申请公布日期 2004.02.19
申请号 US20030642199 申请日期 2003.08.18
申请人 KONICA CORPORATION 发明人 WADA KAZUHIRO;HATTORI HIROYUKI;EGURO YAYOL;ARAI NORIKAZU;HONDA KOJI;HONDA YUICHI;ATARASHI YUICHI
分类号 G02B3/02;G02B7/02;G11B7/00;(IPC1-7):G02B7/02 主分类号 G02B3/02
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