Invention Grant
- Patent Title: Optical pickup device
- Patent Title (中): 光学拾取装置
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Application No.: US299664Application Date: 1999-04-27
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Publication No.: US6114689APublication Date: 2000-09-05
- Inventor: Kun-ho Cho , Jang-hoon Yoo , Yong-hoon Lee , Chul-woo Lee , Chong-sam Chung
- Applicant: Kun-ho Cho , Jang-hoon Yoo , Yong-hoon Lee , Chul-woo Lee , Chong-sam Chung
- Applicant Address: KRX Suwon
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KRX Suwon
- Priority: KRX98-14990 19980427
- Main IPC: G02B3/08
- IPC: G02B3/08 ; G02B5/18 ; G02B13/00 ; G11B7/1374 ; G02B3/00 ; G11B7/12
Abstract:
An optical pickup device includes a light module, emitting light and receiving light reflected from a recording medium, and a solid immersion lens (SIL) member disposed in an optical path between the light module and the recording medium. The SIL has a planar surface facing the recording medium and a plurality of elliptically curved surfaces opposite the recording medium. The elliptically curved surfaces have different radii of curvature arranged symmetrical with respect to a central axis for focusing the incident light to form a tight beam spot on a recording plane of the recording medium.
Public/Granted literature
- US5591986A Photoemitter electron tube and photodetector Public/Granted day:1997-01-07
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