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Automatic gated image intensifier strong light resolution and dynamic range testing system and testing method

A technology like an intensifier and a test system, which is used in the testing of machine/structural components, optical instrument testing, testing optical performance, etc. to achieve high reliability, improve test accuracy and test efficiency, and avoid subjective errors.

Active Publication Date: 2019-10-18
NORTH NIGHT VISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a test system with high test efficiency, reliable test results, low cost, and easy operation to solve the measurement problems of strong light resolution and dynamic range of automatic gated image intensifiers

Method used

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  • Automatic gated image intensifier strong light resolution and dynamic range testing system and testing method
  • Automatic gated image intensifier strong light resolution and dynamic range testing system and testing method
  • Automatic gated image intensifier strong light resolution and dynamic range testing system and testing method

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Experimental program
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Effect test

Embodiment 1

[0076] The method for testing the strong light resolution using an automatic gating image intensifier strong light resolution test system comprises the following steps:

[0077] A1: The power module 11 is powered on, the light source 2 is preheated for 20 minutes, and the neutral filter assembly 3 is adjusted to obtain a distance illuminance of 10 corresponding to the cathode surface of the automatic gated image intensifier to be tested. 2 Strong light of lx level;

[0078] A2: Place the automatic gated image intensifier on the fixture provided in the camera obscura 7, and reliably connect the automatic gated image intensifier to the power supply interface of the power module 11, and close the camera obscura 7;

[0079] A3: CMOS detection components are placed on the detection module 9, and the CMOS detection components are reliably connected with the eyepiece component module 8 and the industrial computer (10), and the resolution test target board is selected as the optical c...

Embodiment 2

[0082] Use the method for testing the dynamic range of the automatic gated image intensifier dynamic range test system, set the typical minimum imaging illuminance of the automatic gated image intensifier to be tested as I min0 , the typical maximum imaging illuminance is I max0 ;The index requirement of qualified automatic gating image intensifier is: signal-to-noise ratio SNR≥SNR min , SNR min The minimum signal-to-noise ratio required for the normal operation of the automatic gating image intensifier; the resolution R≥R min , R min The minimum resolution required for the normal operation of the automatic gating image intensifier; the average brightness B∈[(1-a)B s , (1+a)B s ], a is a constant, determined according to the test requirements of the automatic gated image intensifier to be tested, B s Calibrate the brightness value for the fluorescent screen; the specific test includes the following steps:

[0083] B: The minimum imaging illuminance for testing the automa...

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Abstract

The invention discloses an automatic gated image intensifier strong light resolution and dynamic range testing system and a testing method. The testing system comprises a light source module, an optical assembly module, an objective lens assembly module, a camera obscura, an eyepiece assembly module, a detection module, an industrial control computer and a power module. The light source module, the optical assembly module, the objective lens assembly module, the camera obscura, the eyepiece assembly module and the detection module are placed on the same fixed optical platform guide rail in sequence and centers of the modules are located on the same optical axis. According to the system and the method, the problem that strong light resolution and a dynamic range of an automatic gated imageintensifier cannot be measured is solved as a breakthrough; the strong light resolution is obtained through automatic identification of the industrial control computer in the testing system, so a subjective error of eye visual testing is effectively avoided, and testing accuracy and testing efficiency are improved; and testing of the strong light resolution and the dynamic range is integrated on the same testing system, so operation is convenient, cost is reduced and reliability is high.

Description

technical field [0001] The invention relates to the technical field of automatic gated image intensifiers, in particular to a test system and a test method for realizing the strong light resolution and dynamic range of the automatic gated image intensifier. Background technique [0002] The image intensifier is the core device of low-light night vision equipment, which can enhance the weak light to enough brightness for human eyes to observe. The strong light resolution and dynamic range of the automatic gated image intensifier are closely related to the performance of the automatic gated power supply. Using the automatic gated power supply instead of the traditional high voltage power supply for the automatic gated image intensifier can greatly improve its dynamic range and service life . [0003] Strong light resolution and dynamic range are important indicators to measure the imaging clarity of automatic gating image intensifiers in high-illumination environments, and ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/04G01M11/02
CPCG01M11/0207G01M11/04
Inventor 李亚情李臻褚祝军周盛涛朱文锦杨振董煜辉李晓露
Owner NORTH NIGHT VISION TECH
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