A Retinal Tapered Optical Fiber Compound Eye Imaging Device

Abstract

The invention provides a retinal-type tapered fiber compound eye imaging device comprising an equal-thickness compound eye lens layer, a fiber light conducting device and an image sensor. The fiber light conducting device is formed by close contact and tight arrangement of a plurality of tapered fibers in a manner of large end-to-large end and small end-to-small end arrangement and has a tapered structure; the plurality of tapered fibers are arranged in a manner of gradual diameter reduction from the center to the outside in a radial direction of the fiber light conducting device; the large end surface of the fiber light conducting device is protruded outwardly to form a semi-spherical shape and is coupled with the concave surface of the equal-thickness compound eye lens layer; and the small end surface of the fiber light conducting device is a plane and is connected with the image sensor. The equal-thickness compound eye lens layer has a close arrangement structure formed by close connection of a plurality of sub eyes; the shape of the equal-thickness compound eye lens layer matches the large end surface of the fiber light conducting device; any sub eye is opposite to a fiber beamformed by at least one tapered fiber; and the size of the fiber beam matches that of the corresponding sub eye. Therefore, the high resolution and large field of view imaging are realized based on the tapered high integration fiber structure mode.

Description

technical field [0001] The invention relates to the technical field of bionic compound eyes, in particular to a retinal-shaped tapered optical fiber compound eye imaging device. Background technique [0002] The compound eyes of insects are composed of many sub-eyes, and the number of sub-eyes varies greatly among different insects. The sub-eye cornea is located in the outermost layer, and below the cornea is the crystal cone, which is similar to a transparent cone in shape. The crystalline cone and the cornea merge together to form parallel compound eyes, and each small eye in the parallel compound eyes can image the target object. The light passes through the cone and cornea, and then is transmitted by the crystal beam. The shape of the cone is different under different light intensities. By adjusting the shape of the cone, the light is converged to the range that the sub-eye can receive. The compound eye of an insect is an intelligent optical imaging system. Since the c...

AI Technical Summary

Problems solved by technology

For example, the Changchun Institute of Optics and Mechanics once designed a compound eye with a three-layer structure. The field angle of the single-layer compound eye is 60°, and the field angle of the three-layer compound eye reaches 88°, which improves the field of view of the imaging system to a certain extent. , but still needs to be further improved

In addition, Changchun Optics uses a curved field mirror array, which cannot achieve 100% fiber utilization.

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