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Resolving power evaluation method for three-generation dim light image intensifier

A low-light image intensifier and evaluation method technology, which is applied in the field of optical measurement, can solve the problems that there are no public reports on the resolution of the third-generation low-light image intensifier, achieve reliable technical support, eliminate electronic noise and thermal noise, repeat good sex effect

Active Publication Date: 2013-07-10
CHINA NORTH IND NO 205 RES INST
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Problems solved by technology

[0006] At present, there is no public report on the measurement of the resolution of the third-generation low-light image intensifier using an objective evaluation method at home and abroad.

Method used

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  • Resolving power evaluation method for three-generation dim light image intensifier
  • Resolving power evaluation method for three-generation dim light image intensifier
  • Resolving power evaluation method for three-generation dim light image intensifier

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred examples.

[0031] like figure 1 As shown, the preferred example of the third-generation low-light image intensifier resolution measuring device mainly includes a light source assembly 1, a resolution target 2, a collimator 3, an imaging objective lens 4, a test obscura 5, a CCD camera 6, a base platform 7, a computer 8 and power 9.

[0032] The light source assembly 1 is composed of a standard light source 1-1, a neutral filter, an iris diaphragm 1-2 and an integrating sphere 1-3. The standard light source 1-1 selects the halogen tungsten lamp, the neutral filter and the variable diaphragm attenuate the light beam emitted by the halogen tungsten lamp, and after being integrated by the integrating sphere 1-3, a light beam with a color temperature of 2856K is formed at the exit. The illuminance range is 10 -3 1x~10 -1 Between 1x, the non-uniform...

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Abstract

The invention discloses a resolving power measuring device and a resolving power evaluation method for a three-generation dim light image intensifier, and belongs to the field of optical measurement and metering. The resolving power measuring device is characterized by consisting of a light source component, a resolving power target, a collimator tube, an imaging objective lens, a test camera obscura, a charge coupled device (CCD) camera and a computer. The resolving power evaluation method comprises the following steps of: imaging the resolving power target irradiated by a standard light source to a fluorescent screen by using a measured image intensifier; converting into a frame image of a target line by using the CCD camera, and transmitting into the computer; successively processing asingle frame image of the target line by using a normalized cross correlation model and an optical modulation degree model through internal image processing software of the computer to acquire a single frame processing result; and analyzing multi-frame processing results and performing corresponding supplement operation to acquire a final resolving power evaluation result. By the device and the method, the problem of objective evaluation during resolving power measurement of the three-generation dim light image intensifier is solved; and the device and the method can be popularized to other measurement fields such as an intensified charge coupled device (ICCD) measurement field and the like where resolving power is required to be objectively evaluated, and have wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and mainly relates to a third-generation low-light image intensifier resolution measurement instrument, in particular to a set of third-generation low-light image intensifier resolution measurement device and an evaluation method for the third-generation low-light image intensifier resolution. Background technique [0002] In recent years, with the advancement of science and technology, the requirements for low-light technology in the fields of space astronomical detection, fluorescence detection, and military night vision reconnaissance have become higher and higher. The role of the third-generation low-light image intensifier as a core device in this field has become increasingly prominent. The accurate measurement of the parameters of the third-generation low-light image intensifier is of great significance to improve its performance in scientific research and production, and it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 史继芳韩占锁杨斌李宏光吉晓孙宇楠
Owner CHINA NORTH IND NO 205 RES INST
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