CN105319052A - Low-light-level image intensifier characteristic test system - Google Patents
Low-light-level image intensifier characteristic test system Download PDFInfo
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- CN105319052A CN105319052A CN201510859153.6A CN201510859153A CN105319052A CN 105319052 A CN105319052 A CN 105319052A CN 201510859153 A CN201510859153 A CN 201510859153A CN 105319052 A CN105319052 A CN 105319052A
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Abstract
The invention relates to a low-light-level image intensifier characteristic test system. The test system includes a guide rail, three supports and a two-dimensional translation platform are arranged on the guide rail, a light source, a ground glass image assembly and an ocular lens are arranged on the three supports respectively, a low-light-level image intensifier to be tested is arranged on the two-dimensional translation platform, the light source, the ground glass image assembly, the low-light-level image intensifier and the ocular lens are arranged in sequence along the same optical axis, the ground glass image assembly includes ground glass and a resolution panel which are vertical to the optical axis and arranged next to each other, a photocathode of the low-light-level image intensifier to be tested faces the resolution panel, and a fluorescent screen of the low-light-level image intensifier faces the ocular lens. The test system also includes a driving power supply capable of adjusting the brightness of the light source, and the light source is electrically connected with the driving power supply. The low-light-level image intensifier characteristic test system provided by the invention realizes testing of a distortion characteristic of the low-light-level image intensifier, is simple in system structure, easy to operate and low in cost, and can be used for learning of courses related with the low-light-level image intensifier.
Description
Technical field
The present invention relates to field of photoelectric technology, particularly a kind of gleam image intensifier characteristic test system.
Background technology
Gleam image intensifier is a kind of vacuum image device, forms primarily of photocathode, electron-optical system and video screen.Its image enhaucament effect completes primarily of three links, and namely the photocathode of external photoeffect changes electronic image into the low-energy radiation image be input to above it; Electronic image is obtained energy well and is accelerated and focuses in the image planes of this electron-optical system by specific electrostatic field or electromagnetic complex field, the video screen being positioned at electron-optical system image planes is bombarded by high-velocity electrons and sends the target visual picture be enhanced accordingly with incident image power.
Luminance gain, equivalent background illumination and distortion are three each and every one important parameters weighing gleam image intensifier performance, and it directly affects the performance that low-light is also system complete machine.Therefore, significant to the research of the measuring technology of the luminance gain of gleam image intensifier, equivalent background illumination and distortion performance.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of gleam image intensifier characteristic test system, realizes the test of the distortion performance to gleam image intensifier.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of gleam image intensifier characteristic test system, comprise guide rail, described guide rail is provided with three supports and a two-dimension translational platform, three described supports are respectively arranged with light source, frosted glass image assembly and eyepiece, described two-dimension translational platform is provided with gleam image intensifier to be measured, and described light source, frosted glass image assembly, gleam image intensifier to be measured and eyepiece are arranged in order with optical axis, described frosted glass image assembly comprises frosted glass and resolving power test target, and described frosted glass and resolving power test target perpendicular to optical axis mutually near setting, the photocathode of described gleam image intensifier to be measured is towards described resolving power test target, the face of described gleam image intensifier to be measured is to described eyepiece, also comprise the driving power of the brightness of adjustable described light source, described light source is electrically connected with described driving power.
The invention has the beneficial effects as follows: driving power is luminous with default drive current driving light source, the light that light source sends is irradiated to resolving power test target uniformly after frosted glass all light, pattern on resolving power test target is imaged onto the photocathode of gleam image intensifier to be measured, export from the video screen of gleam image intensifier to be measured the pattern be enhanced after gleam image intensifier to be measured strengthens, from eyepiece, observe the magnification of the different radii of the pattern be enhanced on video screen, the distortion performance of gleam image intensifier to be measured can be known; Native system structure is simple, and simple to operate, cost is low, and can be used in the study of gleam image intensifier correlated curriculum.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described eyepiece is micro-eyepiece or electronic eyepiece.
The beneficial effect of above-mentioned further scheme is adopted to be adopt high resolving power eyepiece, clearly can observe the pattern be enhanced on video screen, thus accurately know the distortion performance of gleam image intensifier to be measured.
Further, described driving power comprise the numerical value of the drive current for light source described in display driver display screen and for regulating the adjusting knob of the size of drive current.
Further, described system also comprises the Test Host installing described driving power.
Further, described display screen and adjusting knob are arranged at the front panel of described Test Host.
Further, described display screen is arranged at the top of described adjusting knob.
Adopt above-mentioned enter the beneficial effect of four step schemes be adopt the numerical value of display screen display driver electric current, the convenient size knowing drive current in time accurately; Display screen is arranged at above adjusting knob, and the numerical value of the drive current of convenient contrast display screen display, the size of turn adjusting knob to drive current regulates.
Further, shown Test Host also comprises rear panel, described rear panel is provided with power interface, switch and light source interface; Described Test Host electrically connects as described Test Host by described power interface and city and powers, and the confession power-off of Test Host described in described switch control rule, described light source realizes being electrically connected by described light source interface with described driving power.
The beneficial effect of above-mentioned further scheme is adopted to be facilitate the electrical connection supplying power-off and light source and driving power of Test Host.
Accompanying drawing explanation
Fig. 1 is the theory diagram of a kind of gleam image intensifier characteristic test system of the present invention;
Fig. 2 is the light source of a kind of gleam image intensifier of the present invention characteristic test system, frosted glass image assembly, gleam image intensifier to be measured and eyepiece arrange structural representation.
In accompanying drawing, the list of parts representated by each label is as follows:
1, guide rail, 2, support, 3, two-dimension translational platform, 4, light source, 5, frosted glass image assembly, 6, eyepiece, 7, gleam image intensifier to be measured.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As depicted in figs. 1 and 2, a kind of gleam image intensifier characteristic test system, comprise guide rail 1, described guide rail 1 is provided with three supports 2 and a two-dimension translational platform 3, three described supports 2 are respectively arranged with light source 4, frosted glass image assembly 5 and eyepiece 6, described two-dimension translational platform 3 is provided with gleam image intensifier 7 to be measured, described light source 4, frosted glass image assembly 5, gleam image intensifier 7 to be measured and eyepiece 6 are arranged in order with optical axis, described frosted glass image assembly 5 comprises frosted glass and resolving power test target, and described frosted glass and resolving power test target perpendicular to optical axis mutually near setting, the photocathode of described gleam image intensifier to be measured 7 is towards described resolving power test target, the face of described gleam image intensifier to be measured 7 is to described eyepiece 6, also comprise the driving power of the brightness of adjustable described light source 4, described light source 4 is electrically connected with described driving power.
Described eyepiece 6 is micro-eyepiece or electronic eyepiece.
Described driving power comprise the numerical value of the drive current for light source described in display driver 4 display screen and for regulating the adjusting knob of the size of drive current.Described system also comprises the Test Host installing described driving power.Described display screen and adjusting knob are arranged at the front panel of described Test Host.Described display screen is arranged at the top of described adjusting knob.
Shown Test Host also comprises rear panel, described rear panel is provided with power interface, switch and light source interface; Described Test Host electrically connects as described Test Host by described power interface and city and powers, and the confession power-off of Test Host described in described switch control rule, described light source 4 realizes being electrically connected by described light source interface with described driving power.
On video screen, radius is that the distortion at r place can obtain according to following formulae discovery:
Wherein, D
rfor the distortion that radius on video screen is r place, M
0for photocathode center input picture is imaged onto the magnification of output image corresponding on video screen, M
rit is the magnification of the output image at r place for radius on video screen.Test and calculate the distortion at different radii place on video screen, the distortion performance of gleam image intensifier to be measured can be obtained.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a gleam image intensifier characteristic test system, it is characterized in that, comprise guide rail (1), described guide rail (1) is provided with three supports (2) and a two-dimension translational platform (3), three described supports (2) are respectively arranged with light source (4), frosted glass image assembly (5) and eyepiece (6), described two-dimension translational platform (3) is provided with gleam image intensifier to be measured (7), described light source (4), frosted glass image assembly (5), gleam image intensifier to be measured (7) and eyepiece (6) are arranged in order with optical axis, described frosted glass image assembly (5) comprises frosted glass and resolving power test target, and described frosted glass and resolving power test target perpendicular to optical axis mutually near setting, the photocathode of described gleam image intensifier to be measured (7) is towards described resolving power test target, the face of described gleam image intensifier to be measured (7) is to described eyepiece (6), also comprise the driving power of the brightness of adjustable described light source (4), described light source (4) is electrically connected with described driving power.
2. a kind of gleam image intensifier characteristic test system according to claim 1, it is characterized in that, described eyepiece (6) is micro-eyepiece or electronic eyepiece.
3. a kind of gleam image intensifier characteristic test system according to claim 1, it is characterized in that, described driving power comprise the numerical value of the drive current for light source described in display driver (4) display screen and for regulating the adjusting knob of the size of drive current.
4. a kind of gleam image intensifier characteristic test system according to claim 3, is characterized in that, also comprise the Test Host installing described driving power.
5. a kind of gleam image intensifier characteristic test system according to claim 4, it is characterized in that, described display screen and adjusting knob are arranged at the front panel of described Test Host.
6. a kind of gleam image intensifier characteristic test system according to claim 5, it is characterized in that, described display screen is arranged at the top of described adjusting knob.
7., according to the arbitrary described a kind of gleam image intensifier characteristic test system of claim 1 to 6, it is characterized in that, shown Test Host also comprises rear panel, described rear panel is provided with power interface, switch and light source interface; Described Test Host electrically connects as described Test Host by described power interface and city and powers, and the confession power-off of Test Host described in described switch control rule, described light source (4) realizes being electrically connected by described light source interface with described driving power.
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Cited By (7)
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| CN106226037A (en) * | 2016-08-20 | 2016-12-14 | 南京理工大学 | A kind of large aperture gleam image intensifier imagewise uniform system safety testing device |
| CN106370400A (en) * | 2016-11-25 | 2017-02-01 | 南京理工大学 | Integrated tester for low-light image intensifier and test method of tester |
| CN107560828A (en) * | 2016-07-01 | 2018-01-09 | 北京振兴计量测试研究所 | A kind of gleam image intensifier signal to noise ratio calibrating installation |
| CN109489941A (en) * | 2018-11-15 | 2019-03-19 | 北方夜视技术股份有限公司 | Gleam image intensifier test macro |
| CN110346120A (en) * | 2019-08-05 | 2019-10-18 | 北方夜视技术股份有限公司 | The test macro and test method of a kind of strong optical resolution of automatic gate image intensifier and dynamic range |
| CN112557796A (en) * | 2020-12-08 | 2021-03-26 | 北方夜视技术股份有限公司 | Image intensifier overshoot testing method, storage medium and testing device |
| CN113432833A (en) * | 2021-06-15 | 2021-09-24 | 北方夜视技术股份有限公司 | Device and method for testing stability of photo-cathode of image intensifier tube after illumination |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560828A (en) * | 2016-07-01 | 2018-01-09 | 北京振兴计量测试研究所 | A kind of gleam image intensifier signal to noise ratio calibrating installation |
| CN106226037A (en) * | 2016-08-20 | 2016-12-14 | 南京理工大学 | A kind of large aperture gleam image intensifier imagewise uniform system safety testing device |
| CN106370400A (en) * | 2016-11-25 | 2017-02-01 | 南京理工大学 | Integrated tester for low-light image intensifier and test method of tester |
| CN109489941A (en) * | 2018-11-15 | 2019-03-19 | 北方夜视技术股份有限公司 | Gleam image intensifier test macro |
| CN110346120A (en) * | 2019-08-05 | 2019-10-18 | 北方夜视技术股份有限公司 | The test macro and test method of a kind of strong optical resolution of automatic gate image intensifier and dynamic range |
| CN110346120B (en) * | 2019-08-05 | 2021-03-09 | 北方夜视技术股份有限公司 | System and method for testing strong light resolution and dynamic range of automatic gate control image intensifier |
| CN112557796A (en) * | 2020-12-08 | 2021-03-26 | 北方夜视技术股份有限公司 | Image intensifier overshoot testing method, storage medium and testing device |
| CN112557796B (en) * | 2020-12-08 | 2023-10-27 | 北方夜视技术股份有限公司 | Image intensifier overshoot test method, storage medium and test device |
| CN113432833A (en) * | 2021-06-15 | 2021-09-24 | 北方夜视技术股份有限公司 | Device and method for testing stability of photo-cathode of image intensifier tube after illumination |
| CN113432833B (en) * | 2021-06-15 | 2022-09-16 | 北方夜视技术股份有限公司 | Device and method for testing stability of photo-cathode of image intensifier tube after illumination |
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Application publication date: 20160210 |