A method and system for detecting the refractive index distribution of a self-focusing lens product

Abstract

The invention provides a method and system for detecting the refractive index distribution of a self-focusing lens product. Through the design of the laser light path structure, the finished product of the self-focusing lens is directly detected without slicing the self-focusing lens, and the refractive index distribution of the self-focusing lens is increased. and the common optical path of the reference beam and the test beam in the present invention belongs to the Fizeau interference optical path, and adopts the interference fringes of the reflected light on the front surface of the self-focusing lens and the reflected light of the standard spherical mirror to analyze the refractive index distribution of the self-focusing lens, avoiding the traditional self-focusing lens. The problem of too many optical elements in the detection method of the refractive index distribution of the focusing lens, and the influence of the deviation of other optical elements on the optical path difference is almost the same, which can overcome the interference of the environment.

Description

Technical field [0001] The present invention relates to a refractive index detector technical field, particularly relates to a method and system for detecting the distribution of self-focusing lens refractive index of the finished product. Background technique [0002] Since the refractive index of the focusing lens is a columnar shape in the radial direction of the optical element a graded refractive index distribution due to their unique properties, it has been widely used in micro-optics imaging systems, medical equipment, fiber coupling area. [0003] It depends on the optical properties of a refractive index profile, therefore, to provide a high-efficiency, since the focus detection method of the refractive index profile of the finished lens, is one of the problems in the art researchers study. [0004] Prior art entitled "A method for self-focusing lens and a refractive index distribution image acquiring device test apparatus", using a Mach - Zehnder interferometry detectin...

AI Technical Summary

Problems solved by technology

[0004] The existing technology titled "A Refractive Index Distribution Testing Device and Image Acquisition Device for Self-focusing Lens" uses the Mach-Zehnder interference principle to detect the refractive index distribution of self-focusing lens slices. Slicing the lens not only reduces the detection efficiency, but also introduces the thickness error of the slice; the Mach-Zehnder interferometer uses a split light path to interfere with the light path, and the detection result is easily affected by the environment, resulting in low detection accuracy

[0005] Therefore, in the prior art, the problems of low detection efficiency and low precision caused by slicing the self-focusing lens and using split light paths to interfere with light paths need to be solved urgently.

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