Optical head optical system optimization method |
Title： |
| Optical head optical system optimization method |
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Application Number： |
200710075381 |
Application Date： |
2007/08/01 |
Announcement Date： |
2008/01/16 |
Pub. Date： |
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Publication Number： |
101105951 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
94[China|shenzhen] |
IPC： |
G11B 7/08 |
Applicant(s)： |
Graduate School at Shenzhen, Tsinghua University |
Inventor(s)： |
Cheng Xuemin, Ma Jianshe, Yan Shuang, Mao Leshan, Sun Manlong, Yang Mingsheng, Pan Longfa, Zhang Buqing, Wang Shuoshi |
Key Words： |
Optical head, optical system, optimization method |
Abstract： |
The invention discloses a method for optimizing optical system in optical head, which belongs to the technical field of optical storage. The invention includes the following steps: (A). simulate the optical path according to the preliminary design result of optical system, and optimize the optical system to reach the diffraction limit with a first image quality evaluation function on the basis of the traditional aberration theory; (B). optimize the optical system secondarily with the sensitivity checked by the optical patch component in the optical system as the goal of optimization under the condition of meeting the optimization limit of image quality theory. Because of the adoption of the first image quality evaluation function, the invention optimizes the optical system to reach the diffraction limit, and then optimizes the optical system secondarily with the sensitivity checked by the optical patch component in the optical system as the goal of optimization. Therefore, the invention can make the sensitivity of optical head meet the requirement of control system, and enhance the design and optimization efficiency of optical system in optical head. |
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