发明申请
- 专利标题: Optical pickup device having chromatic aberration correction lens
- 专利标题(中): 具有色差校正透镜的光学拾取装置
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申请号: US11097287申请日: 2005-04-04
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公开(公告)号: US20050169155A1公开(公告)日: 2005-08-04
- 发明人: Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
- 申请人: Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
- 申请人地址: KR Suwon-si
- 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: KR Suwon-si
- 优先权: KR2000-55477 20000921
- 主分类号: G02B13/00
- IPC分类号: G02B13/00 ; G02B3/00 ; G02B13/18 ; G11B7/135 ; G11B7/00
摘要:
An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical path changer on an optical path between the light source and the objective lens to change the path of incident light, a chromatic aberration correction lens disposed on an optical path between the light source and the objective lens, and a photodetector to receive light which is reflected from the recording medium and is then incident thereon through the optical path changer. The chromatic aberration correction lens corrects a chromatic aberration occurring due to a change in the wavelength and/or due to an increase in a wavelength bandwidth of the light. The chromatic aberration correction lens includes at least two lenses such that a lens having a positive power and a lens having a negative power are adjacent to each other.
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