Invention Grant
- Patent Title: Optical pickup device having chromatic aberration correction lens
- Patent Title (中): 具有色差校正透镜的光学拾取装置
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Application No.: US11842210Application Date: 2007-08-21
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Publication No.: US08184520B2Publication Date: 2012-05-22
- Inventor: Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
- Applicant: Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
- Applicant Address: KR Suwon-Si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-Si
- Agency: NSIP Law
- Priority: KR2000-55477 20000921
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
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.
Public/Granted literature
- US20070286051A1 OPTICAL PICKUP DEVICE HAVING CHROMATIC ABERRATION CORRECTION LENS Public/Granted day:2007-12-13
Information query
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