Method for detecting material uniformity of spherical lens

A technology of spherical lens and detection method, which is applied in the direction of material analysis, material analysis through optical means, and measuring device, etc., which can solve the problem of inability to evaluate the uniformity of lens materials

Active Publication Date: 2016-05-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

In the prior art, the detection methods for the uniformity of optical glass materials include the transmission method based on the phase-shifting interferometer and the sticking plate method, but

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  • Method for detecting material uniformity of spherical lens
  • Method for detecting material uniformity of spherical lens
  • Method for detecting material uniformity of spherical lens

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] figure 1 It is a schematic diagram of the uniformity detection method of spherical lens materials, and the detection of uniformity of spherical lens materials by combining phase-shifting interferometry technology, refractive index matching liquid and mounting plate includes the following steps:

[0023] Step 1: Build a spherical lens material uniformity testing device, including an interferometer 1, a transmission plane etalon (TF) 2, a refractive index matching liquid 3, a mounting plate 4, an inspected lens 5, and a reflection plane etalon (RF) 6 , all components are placed coaxially. Immerse the tested lens 5 in the refractive index matching liquid 3, and use two sticking plates 4 to form a container for the refractive index matching liquid 3, wherein the refractive index of the refractive index matching liquid 3 at the working wave...

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Abstract

The invention discloses a method for detecting material uniformity of a spherical lens and belongs to the technical field of optical interferometry. The method includes that phase-shifting interferometry technology, refractive index matching liquid and a pasting plate are combined to realize detection on material uniformity of the spherical lens; by matching the refractive index matching liquid with refractive index of a detected lens, the detected lens can be detected by utilizing plane waves of an interferometer; influence, on detection results, of uniformity of the refractive index matching liquid is eliminated by stirring the refractive index matching liquid and repeatedly measuring interference detection results in a full-cavity state; material uniformity of the detected lens can be acquired by subtracting full-cavity and empty-cavity interference detection results. The method has the advantages that material uniformity of flat glass can be measured, and material uniformity of the spherical lens can be measured.

Description

technical field [0001] The invention belongs to the technical field of optical interference measurement and relates to a method for detecting uniformity of optical spherical lens materials. Background technique [0002] High-precision optical imaging lenses are usually composed of multiple optical lenses. In order to achieve ideal imaging quality, the transmitted wavefront of the optical lens is required to reach the diffraction limit, and the material uniformity of the optical glass is one of the main sources of the transmission wavefront error of the optical lens. . In addition, when using the zero position compensation mirror method to detect the aspheric mirror surface shape, in order to obtain high-precision aspheric surface shape detection results, it is necessary to correct various error sources of the zero position compensation mirror. The influence of spherical wavefronts. In the above application fields, the uniformity detection technology of optical glass materi...

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Application Information

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IPC IPC(8): G01N21/17
CPCG01N21/17
Inventor 苗亮张文龙刘钰马冬梅金春水
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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