Light beam universal extending system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
- Publication Date
- 2005-05-11
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
Technical field:
[0001] The invention relates to beam conversion, in particular to a universal beam expander system suitable for multiple beam expander ratios. technical background:
[0002] In modern optical systems, it is often necessary to transform parallel beams of different calibers. In particular, the beam diameter of the ordinary laser output is generally relatively small, between 1-10mm, and it is usually necessary to expand the beam in the actual system to meet the actual needs. For example, in some optical storage systems, the diameter of the beam output by the laser is about 2mm. In order to make full use of the advantages of the large numerical aperture of the optical system in the optical storage system to minimize the focused spot, it is necessary to expand the beam to a large enough diameter (about 12mm).
[0003] At present, the common beam expander system is usually aimed at a specific application, and there is only one beam expander ratio, and it is diff...