- 专利标题： Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device
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申请号： US640474申请日： 1996-05-01
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公开(公告)号： US5822135A公开(公告)日： 1998-10-13
- 发明人: Chul-woo Lee , Dong-ho Shin , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Pyong-yong Seong , Jang-hoon Yoo , Yong-hoon Lee
- 申请人： Chul-woo Lee , Dong-ho Shin , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Pyong-yong Seong , Jang-hoon Yoo , Yong-hoon Lee
- 申请人地址： KRX Suwon
- 专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人地址： KRX Suwon
- 优先权： KRX1995-27715 19950830; KRX1995-31679 19950925; KRX1995-33914 19951004; KRX1996-1605 19960125; KRX1996-3605 19960214
- 主分类号： B29D11/00
- IPC分类号： B29D11/00 ; G02B3/10 ; G02B27/58 ; G11B7/00 ; G11B7/0045 ; G11B7/005 ; G11B7/09 ; G11B7/13 ; G11B7/135 ; G02B9/00
摘要：
A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in an intermediate region between near and far axes of an incident light beam, thus providing a simplified and inexpensive device for using discs of differing thickness in a single disc drive, by reducing the spherical aberration effect.
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