Optical-field microscopic system based on aspheric micro-lens array

Abstract

The invention discloses an optical-field microscopic system based on an aspheric micro-lens array. The optical-field microscopic system comprises a micro-objective, the micro-lens array, a photosensitive element and a computer processing device, wherein the micro-lens array is an aspheric micro-lens array. According to the system, a spherical micro-lens array in a traditional optical-field microscope is changed into aspheric micro-lens array for correcting aberration, imaging quality of each sub lens can be improved, so that the resolution ratio of a reconstructed three-dimensional image and imaging quality are improved on the whole, and the accuracy of a reconstructed model of an optical-field microscope is improved.

Description

technical field [0001] The invention relates to the technical field of micro-nano structure measurement, in particular to a light field microscope system based on an aspheric micro-lens array. Background technique [0002] Traditional microscopes can realize the observation of tiny structures, but limited by the structure of the optical system, it is impossible to achieve large depth of field and multi-view observation. Therefore, the use of traditional optical microscopes is limited when measuring some complex or inconvenient structures for section observation. Light field microscope technology can realize the recording of the entire light field information by adding a microlens array between the microscope objective lens and the imaging photosensitive element. Through the post-processing of the computer, the recoding of the light can be realized, so as to realize the observation of the observed object. reconstruction of 3D information. [0003] For example, in 2006, Levo...

AI Technical Summary

Problems solved by technology

However, it can be seen from the imaging analysis of each small lens that the radius of the diffuse spot is large, which directly affects the image quality of the post-processing of the light field microscope.

It can be seen that the main components that affect light field microscope imaging and model reconstruction are microlens arrays. However, since the currently used microlens arrays are generally spherical mirrors with equal focal lengths or spherical mirrors with different focal length distributions, the restored images obtained at low At the same time as the spatial resolution, the imaging quality has also been affected to a certain extent.

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