Focusing lens for dual-wavelength OCT system

A focusing lens, dual-wavelength technology, applied in the field of focusing lens, can solve the problems of loss, convergence to the same position, etc.
CN101354477AInactive Publication Date: 2009-01-28NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANKAI UNIV
Publication Date
2009-01-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an amasthenic lens used for a dual wavelength OCT system. The amasthenic lens carries out excellent correction of image differences such as ball difference, can obtain small facula and effectively improves the resolution of the OCT system; more importantly, the amasthenic lens excellently corrects the colour difference and can be used for the OCT system detection imaging of dual wavelength or multi-wavelength. The amasthenic lens has the advantages of simple structure, low cost, small image difference and clear imaging.
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Description

Technical field

[0001] The invention belongs to the technical field of optical lenses, and particularly relates to a focusing lens used in a dual-wavelength OCT system. Background technique

[0002] OCT (Optical Coherence Tomography, Optical Coherence Tomography) is a non-destructive tomography technology based on interferometry. It combines the advantages of coherence gate technology and space gate technology, and can effectively filter out various impurities that are not related to signal light. Astigmatism has become a promising imaging diagnostic technique. Using different wavelengths of light to perform OCT detection on biological tissues, the obtained images and detection depth may be different. Using OCT technology to study the spectral characteristics of biological tissues has formed a new functional OCT technology-wavelength dependent OCT technology. Multi-wavelength OCT technology is a kind of wavelength-dependent OCT technology, and the most commonly used by researcher...

Claims

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