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Modulation transfer function testing device

A modulation transfer function and testing device technology, which is applied to measurement devices, optical instrument testing, and optical performance testing, etc., can solve the problems of low testing efficiency of modulation transfer function testing devices, and achieve the effect of improving testing efficiency and saving testing time.

Active Publication Date: 2021-06-01
GOERTEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a modulation transfer function test device, aiming to solve the technical problem of low test efficiency of the existing modulation transfer function test device

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a modulation transfer function testing device. The modulation transfer function testing device comprises a light source, a sample plate, a first optical element, a second optical element and an imaging member. The sample plate is provided with an imaging pattern. The first optical element is used for separating light rays of different wavebands, and the second optical element is used for adjusting the emergent angle of the light rays. The imaging pattern, the first optical element, the second optical element and the imaging member are sequentially arranged on the light path of the light source, and a piece to be tested is placed on the light path behind the sample plate and in front of the first optical element. According to the technical scheme, the first optical element can separate composite light into monochromatic light of different wavebands, then the second optical element adjusts the emergent angle of the light, so that projections of different monochromatic light are formed on the imaging member, then imaging data of different monochromatic light is then obtained, MTF values of the piece to be tested under the monochromatic light of different wavebands are obtained, the whole test can be completed at one time, the test time is saved, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of optical testing, in particular to a modulation transfer function testing device. Background technique [0002] Modulation Transfer Function (MTF for short) is a more scientific method to analyze the resolution of the lens, and it is a basis for analyzing the quality of the lens. When performing the MTF test of an optical lens or system, it is necessary to examine the MTF test values ​​of the optical lens or system under different colors of light. [0003] At present, the usual practice is to use light sources of different bands to conduct MTF tests on the lens or system to be tested. The MTF test value of the system, but this test method takes a lot of time when switching light sources of different bands, and the switching interval is completely invalid, especially when performing batch tests, the test efficiency is low, which will affect the enterprise. production efficiency. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/0292
Inventor 朱春霖赵东峰董立超刘宝山刘艺艾立夫彭旭金成滨李晓萱
Owner GOERTEK INC
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