General low-light-level image intensifier dark spot detection reticle and detector

Abstract

The utility model discloses a universal low-light image intensifier dark spot detection reticle and a detector. The detection reticle comprises a circular flat plate made of a transparent material; a first circle, a second circle and a third circle are concentrically arranged on the circular flat plate, and the diameters of the first circle, the second circle and the third circle are sequentially increased. The diameters of the first circle, the second circle and the third circle are 5.6 mm, 14.7 mm and 18 mm in sequence; two division lines which are perpendicular to each other are arranged on the circular flat plate, and the intersection point of the division lines coincides with the circle center of the circular flat plate; a plurality of scale marks perpendicular to the division line are arranged on the division line at equal intervals by taking the intersection point as a base point; and the distance between the scale marks is 0.076 mm. The detection device has the advantages that whether the dark spot of the low-light image intensifier meets the requirement or not can be quickly judged, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of low-light-level image intensifier detection, in particular to a universal low-light-level image intensifier dark spot detection scale plate and detector. BACKGROUND

[0002] The low-light-level image intensifier is the core device of the image intensifier type night vision equipment, along with the development of technology, the specification model, production factory, image intensifier type night vision equipment whole machine research and development and production assembly scale, factory of low-light-level image intensifier gradually increase. The low-light-level image intensifier will have special detection equipment and tooling combination to carry out detection before factory, and it is difficult to detect in different circulation links after factory, especially after the circulation node bright low-light-level image intensifier, and dark spot is easy to produce, and the dark spot index cannot be accurately detected. Therefore, at present, a universal low-light-level image intensifier dark spot detection scale plate and detector are urgently needed. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problem to provide a universal low-light-level image intensifier dark spot detection scale plate and detector.

[0004] In order to solve the above technical problem, the technical scheme of the utility model is:

[0005] A universal low-light-level image intensifier dark spot detection scale plate, including the circular flat board made of transparent material, concentrically arranged with the diameter gradually increasing circle one, circle two and circle three on the circular flat board, the diameter of circle one, circle two and circle three is 5.6mm, 14.7mm and 18mm in turn, two division lines perpendicular to each other are arranged on the circular flat board, and the intersection of the division line coincides with the center of the circular flat board, a plurality of scale lines perpendicular to the intersection point are arranged at equal intervals, and the interval of the scale line is 0.076mm.

[0006] Preferably, the scale line takes the intersection point as the initial, and five scale lines are cyclically arranged in a group to the circle three, and the length of the scale line in a group increases in turn.

[0007] Preferably, the length of the scale line in a group is 1 times, 2 times, 3 times, 4 times and 5 times of 0.076mm in turn.

[0008] A general low-light-level image intensifier dark spot detector, comprising a shell, an objective lens group installed at the front end of the shell, an eyepiece group installed at the rear end of the shell, and a detection scale plate as described above; the eyepiece group comprises an eyepiece shell, a front lens group installed at the front end of the eyepiece shell, and a rear lens group installed at the rear end of the eyepiece shell; the detection scale plate is installed in the eyepiece shell through a rotating adjusting structure and is located between the front lens group and the rear lens group; a cover that can be opened and closed is arranged on the shell, a removable positioning sleeve is arranged in the shell at the cover, the positioning sleeve is used for clamping the image intensifier, and the positioning sleeve has a through hole for exposing a power supply interface of the image intensifier; a power supply control panel is arranged on the inner side of the shell, and the power supply control panel has a power switch, a gain adjusting button, a power supply socket, and a power supply contact pin; after the cover is closed, the power supply contact pin is in conduction with the power supply interface of the image intensifier.

[0009] Preferably, one side of the cover is rotationally connected with the shell, and a locking handle for pressing the cover is rotationally arranged on the shell.

[0010] Preferably, the front end of the objective lens group is provided with a variable diaphragm.

[0011] Preferably, the objective lens group and the shell are connected in a threaded manner and are locked by a first locking screw; the eyepiece shell and the shell are connected in a threaded manner and are locked by a second locking screw.

[0012] Preferably, the shell is further provided with a battery compartment, and the battery compartment is provided with a battery cover.

[0013] Preferably, the rotating adjusting structure comprises a sleeve body rotationally sleeved in the eyepiece shell, a hand wheel rotationally sleeved on the outer wall of the eyepiece shell, and a connecting pin fixedly connecting the sleeve body and the hand wheel; the detection scale plate is installed on the sleeve body through a rubber ring; and a strip hole through which the connecting pin passes is arranged on the shell.

[0014] Preferably, the utility model further comprises a CCD camera for adopting the image of the eyepiece, and a display screen electrically connected with the CCD camera.

[0015] By adopting the technical scheme, the following advantages are achieved:

[0016] 1. The detection scale plate of the utility model realizes the rotation of the mutually perpendicular scale marks thereon by rotating the detection scale plate, so that the scale marks are quickly close to the dark spot of the low-light-level image intensifier, the diameter of the dark spot can be measured, and then whether the dark spot of the low-light-level image intensifier meets the requirements can be quickly judged.

[0017] 2. The detector of the utility model, through the replacement of the positioning sleeve of the same size, cooperate the power supply wiring mode of different specifications of image intensifier, adopt the general power control mode, can satisfy the dark spot detection of different specifications of image intensifier fast detection, the utility model discloses not only can detect the dark spot of image intensifier, can also detect dust, oil stain, scratch and other foreign matter defects;

[0018] 3. The detector of the utility model is provided with variable diaphragm at the front end, ensures the light energy consistency of passing through objective lens under different brightness environment, reduces the detection error of environmental brightness, avoids the scorching of image intensifier by strong light during the detection process simultaneously;

[0019] 4. The detector of the utility model can adopt dry battery, power bank, stabilized power supply in multiple forms, is convenient for use;

[0020] 5. The objective lens group of the detector of the utility model can adopt the eyepiece with diopter adjustable function, can also adopt CCD camera output image on display screen direct observation detection according to the need, satisfies the demand of different environment. DETAILED DESCRIPTION

[0021] Figure 1 It is the structural schematic diagram of detecting the scale plate;

[0022] Figure 2 It is the partial enlarged view of horizontal scale line, wherein part of size parameters are marked;

[0023] Figure 3 It is the perspective view of detector;

[0024] Figure 4 It is the sectional view of detector;

[0025] Figure 5 It is the sectional enlarged view of detecting scale plate in detector;

[0026] Figure 6 It is Figure 4 The explosion view of another angle;

[0027] Figure 7 It is Figure 4 The perspective view of adding CCD camera and display screen in detector;

[0028] Figure 8 It is the schematic diagram of the comparison of rotation angle when detecting dark spot of detecting scale plate;

[0029] Figure 9 It is Figure 8 The partial enlarged view when measuring dark spot;

[0030] In the drawing:

[0031] 1-House, 2-Objective lens group, 3-Eyepiece group, 4-Detection reticle, 5-Rotation adjustment structure, 6-Cover, 7-Positioning sleeve, 8-Through hole, 9-Power control board, 10-Power switch, 11-Gain adjustment button, 12-Power socket, 13-Power supply contact pin, 14-Locking handle, 15-Variable aperture, 16-First locking screw, 17-Second locking screw, 18-Battery compartment, 19-Battery cover, 20- - CCD camera, 21- Display screen, 22- Rubber retaining ring, 23-, 31- Eyepiece housing, 32- Front lens group, 33- Rear lens group, 41- Circular flat plate, 42- Circle 1, 43- Circle 2, 44- Circle 3, 45- Gradient line, 46- Scale line, 51- Sleeve body, 52- Handwheel, 53- Connecting pin, 54- Rubber ring, 55- Strip hole, 100- Image intensifier, 200- Power interface. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] As attached Figures 1-2 As shown, a universal low-light image intensifier dark spot detection reticle includes a circular plate 41 made of transparent material; on the circular plate 41, concentrically arranged are circles 42, 43, and 44 with successively increasing diameters; the diameters of circles 42, 43, and 44 are 5.6 mm, 14.7 mm, and 18 mm, respectively; two mutually perpendicular reticles 45 are provided on the circular plate 41, the intersection of which coincides with the center of the circular plate 41; the reticles 45 are equidistantly arranged with the intersection point as the base point, and a plurality of scale lines 46 perpendicular to them are arranged at intervals; the spacing of the scale lines 46 is 0.076 mm.

[0035] As a preferred technical solution in this embodiment, for convenient and intuitive observation and reading, the scale lines 46 are arranged in a group of five, starting from the intersection point, and cyclically up to circle three 44, with the length of the scale lines 46 within a group increasing sequentially. As the most preferred technical solution, the length of the scale lines 46 in the group is 1, 2, 3, 4, and 5 times that of 0.076mm, respectively.

[0036] Example 2

[0037] As attached Figures 1-9As shown in the figure, a general low-light-level image intensifier dark spot detector comprises a housing 1, an objective lens group 2 installed at the front end of the housing 1, an eyepiece lens group 3 installed at the rear end of the housing 1, and a detection scale plate 4 as described in Embodiment 1; the eyepiece lens group 3 comprises an eyepiece lens housing 31, a front lens group 32 installed at the front end of the eyepiece lens housing 31, and a rear lens group 33 installed at the rear end of the eyepiece lens housing 31; the detection scale plate 4 is installed in the eyepiece lens housing 31 through a rotating adjustment structure 5 and is located between the front lens group 32 and the rear lens group 33; a cover 6 that can be opened and closed is arranged on the housing 1, a removable positioning sleeve 7 is arranged in the housing 1 at the cover 6, the positioning sleeve 7 is used for clamping an image intensifier 100, and the positioning sleeve 7 has a through hole 8 for exposing a power supply interface 200 of the image intensifier 100; a power supply control panel 9 is arranged on the inner side of the housing 1, the power supply control panel 9 has a power switch 10, a gain adjustment button 11, a power supply socket 12, and a power supply contact pin 13; after the cover 6 is closed, the power supply contact pin 13 is in conduction with the power supply interface 200 of the image intensifier 100.

[0038] In this embodiment, the front lens group 32 can be replaced to adapt to image intensifiers with different anode surface (rear end of the image intensifier) surface types (flat or spherical).

[0039] In this embodiment, a wiring socket 23 is additionally arranged on the power supply control panel 9, the wiring socket 23 and the power supply contact pin 13 form two power supply modes to meet the use of image intensifiers 100 of different specifications such as tab type, wiring type, and mouse tail type.

[0040] As a preferred technical solution of this embodiment, one side of the cover 6 is rotationally connected with the housing 1, a locking handle 14 that presses the cover 6 is rotationally arranged on the housing 1, the cover 6 can be pressed and fixed and separated by rotating the locking handle 14, when the locking handle 14 is rotated to press the closed cover 6, the cover 6 is limited by the locking handle 14 and cannot be opened, when the locking handle 14 is rotated to separate from the cover 6, the cover 6 is no longer limited by the locking handle 14 and can be rotated to be opened to take out the positioning sleeve 7.

[0041] As a preferred technical solution of this embodiment, a variable diaphragm 15 is arranged at the front end of the objective lens group 2, the diameter of the small circular hole in the center of the variable diaphragm 15 can be adjusted according to the ambient illuminance, which can not only keep the objective lens group 2 clean and avoid scratching, but also meet the consistency of light energy passing through the objective lens in different brightness environments, ensure that the detection result is not affected by the change of environmental brightness, and avoid burning the image intensifier 100 in strong light during the detection process.

[0042] As the preferred technical scheme of the embodiment, the objective lens group 2 is connected with the shell 1 in a threaded manner and is locked by the first locking screw 16; the ocular lens shell 31 is connected with the shell 1 in a threaded manner and is locked by the second locking screw 17. When detecting different specifications and models of the image intensifier 100, the positions of the anode surface and the cathode surface (both ends of the optical axis of the image intensifier 100) of the image intensifier 100 are different, and the positions of the anode surface and the cathode surface of the image intensifier 100 can be matched by respectively adjusting the front and back movements of the ocular lens group 3 and the objective lens group 2 through threads, and after the positions are adjusted, the first locking screw 16 and the second locking screw 17 are used for locking, respectively.

[0043] As the preferred technical scheme of the embodiment, the shell 1 is further provided with a battery compartment 18, and the battery compartment 18 is provided with a battery cover 19. By arranging the battery compartment 18, a battery can be placed in the battery compartment 18 to supply power to the power control panel 9, for example, a general CR123 battery, and the power supply port 12 can be used to charge a power bank or a direct-current stabilized power supply.

[0044] As the preferred technical scheme of the embodiment, the rotating adjusting structure 5 includes a sleeve body 51 rotatably sleeved in the ocular lens shell 31, a hand wheel 52 rotatably sleeved on the outer wall of the ocular lens shell 31, and a connecting pin 53 fixedly connecting the sleeve body 51 and the hand wheel 52; the detection reticle 4 is installed on the sleeve body 51 through a rubber ring 54; the shell 1 is provided with a strip hole 55 through which the connecting pin 53 passes. By rotating the hand wheel 52, the connecting pin 53, the sleeve body 51 and the detection reticle 4 are driven to rotate together. Obviously, the detection reticle 4 can also use the rotating adjusting structure adopted in the art.

[0045] As the preferred technical scheme of the embodiment, it further includes a CCD camera 20 for using the ocular lens image, and a display screen 21 electrically connected with the CCD camera 20. Directly aiming at the ocular lens group 3 for observation with the naked eye will cause fatigue and inconvenience after a long time, therefore, by increasing the CCD camera 20 to receive the image of the detection reticle 4 and the dark spot formed by the ocular lens group 3 and transmit to the display screen 21 for observation and detection, the visual fatigue can be effectively reduced.

[0046] As the preferred technical scheme of the embodiment, the front end of the positioning sleeve 7 is provided with a rubber pressing ring 22, which can ensure that there is no shaking gap after the positioning sleeve 7 is installed into the shell, and ensure the accuracy of detection.

[0047] When working, the image intensifier 100 is put into the positioning sleeve 7, the positioning sleeve 7 is assembled with the rubber pressing ring 22, the inner hole size and depth of the positioning sleeve 7 are matched with the shape size of the image intensifier 100 to be detected, and the through hole 8 is opened at the power supply interface 200 (the positive and negative poles of the contact piece) of the image intensifier 100, so that the positive and negative poles of the contact piece of the image intensifier 100 are exposed. After the image intensifier 100 and the positioning sleeve 7 are combined, they are put into the shell 1 of the detector, the lower cover body 6 is covered, and the locking handle 14 is locked, the power supply contact pin 13 is naturally connected to the power supply interface 200 of the image intensifier 100, the power supply switch 10 is turned on, the image intensifier 100 is lighted, and then the dark spot and defect detection can be started.

[0048] The detection requirements are shown in Table 1, and the source is GJB5984-2007 "Three generations of micro-light image intensifier specification", when the number of dark spots in the corresponding diameter range is greater than or equal to the specified number, then it is unqualified.

[0049]

[0050] As shown in the accompanying drawings, Figures 8-9 The area of the circle one 42 is referred to as a first area, the area between the circle one 42 and the circle two 43 is referred to as a second area, and the area between the circle two 43 and the circle three 44 is referred to as a third area. Figure 8 When the image intensifier 100 to be detected is installed and lighted, two dark spots can be observed in the upper drawing, and it can be determined that the dark spots are respectively in the second area and the third area, but the sizes cannot be determined. At this time, the hand wheel 52 can be rotated, and the division line 45 is rotated to the position of the lower drawing in Figure 8 It can be determined that the dark spot in the second area is greater than 0.076mm and less than 0.152mm, and the dark spot in the third area is greater than 0.381mm, and it is unqualified.

[0051] The power control board 9 and the power switch 10, the gain adjustment button 11, the power supply socket 12 and the power supply contact pin 13 and the like on the power control board 9 involved in the utility model are all prior art, and a person skilled in the art can realize them without redundancy. At the same time, the content protected by the utility model does not involve improvement of software and methods.

[0052] In the description process of the above embodiment, some components and specific structural details thereof which are not directly related to the core innovation points of the utility model are omitted in order to strive for the simplicity and clarity of the specification. These omitted parts all belong to the existing technical field, and a person skilled in the art can realize the design and manufacture of these parts according to the professional knowledge and existing technical materials. Therefore, detailed redundancy will not be performed here.

[0053] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A universal micro-light image intensifier dark spot detection reticle, comprising a circular flat plate (41) made of transparent material; characterized in that: The circular flat plate (41) is provided with circle one (42), circle two (43) and circle three (44) with increasing diameters in sequence, the diameters of the circle one (42), the circle two (43) and the circle three (44) are 5.6mm, 14.7mm and 18mm in sequence, the circular flat plate (41) is provided with two mutually perpendicular division lines (45), the intersection of the division lines (45) coincides with the center of the circular flat plate (41), a plurality of scale lines (46) perpendicular to the intersection are provided at equal distances, and the interval of the scale lines (46) is 0.076mm.

2. The universal night vision device dark spot detection reticle of claim 1, wherein: The scale lines (46) are cyclically provided in groups of five scale lines (46) as an initial point to the intersection to the circle three (44), and the lengths of the scale lines (46) in a group increase in sequence.

3. A general micro-luminous image intensifier dark spot detector, comprising a housing (1), an objective lens group (2) mounted at the front end of the housing (1), an eyepiece lens group (3) mounted at the rear end of the housing (1), and the detection scale plate (4) as claimed in claim 1 or 2; the eyepiece lens group (3) comprises an eyepiece lens housing (31), a front lens group (32) mounted at the front end in the eyepiece lens housing (31), and a rear lens group (33) mounted at the rear end in the eyepiece lens housing (31); characterized in that: The detection reticle (4) is installed in the eyepiece shell (31) through the rotating adjusting structure (5) and is located between the front lens group (32) and the rear lens group (33), the shell (1) is provided with an openable cover (6), the shell (1) is provided with a removable positioning sleeve (7) at the cover (6), the positioning sleeve (7) is used for clamping the image intensifier (100), the positioning sleeve (7) has a through hole (8) for exposing the power interface (200) of the image intensifier (100), the inner side of the shell (1) is provided with a power control panel (9), the power control panel (9) has a power switch (10), a gain adjusting button (11), a power socket (12) and a power supply contact pin (13), and the power supply contact pin (13) is in conduction with the power interface (200) of the image intensifier (100) after the cover (6) is closed.

4. The universal dark spot detector for micro- light image intensifier according to claim 3, characterized in that: The cover (6) is rotatably connected to the shell (1), and a locking handle (14) for pressing the cover (6) is rotatably arranged on the shell (1).

5. The general micro-luminous image intensifier dark spot detector according to claim 3 or 4, characterized in that: The front end of the objective lens group (2) is provided with a variable diaphragm (15).

6. The universal dark spot detector for micro- light image intensifiers according to claim 3 or 4, characterized in that: The objective lens group (2) and the shell (1) are connected in a threaded manner and are locked by a first locking screw (16), and the eyepiece shell (31) and the shell (1) are connected in a threaded manner and are locked by a second locking screw (17).

7. The universal dark spot detector for micro- light image intensifier according to claim 3 or 4, characterized in that: The shell (1) is further provided with a battery compartment (18), and the battery compartment (18) is provided with a battery cover (19).

8. The universal dark spot detector for micro- light image intensifier according to claim 3 or 4, characterized in that: The rotating adjusting structure (5) comprises a sleeve (51) rotatably sleeved in the eyepiece shell (31), a hand wheel (52) rotatably sleeved on the outer wall of the eyepiece shell (31), and a connecting pin (53) fixedly connecting the sleeve (51) and the hand wheel (52), the detection reticle (4) is installed on the sleeve (51) through a rubber ring (54), and the shell (1) is provided with a strip hole (55) through which the connecting pin (53) passes.

9. The universal dark spot detector for micro- light image intensifier according to claim 3 or 4, characterized in that: It further comprises a CCD camera (20) for adopting the eyepiece image, and a display screen (21) electrically connected with the CCD camera (20).

Images