CN218496378U - Infrared camera lens optical axis detection device - Google Patents
Infrared camera lens optical axis detection device Download PDFInfo
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- CN218496378U CN218496378U CN202221630096.6U CN202221630096U CN218496378U CN 218496378 U CN218496378 U CN 218496378U CN 202221630096 U CN202221630096 U CN 202221630096U CN 218496378 U CN218496378 U CN 218496378U
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- reticle
- optical axis
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Abstract
The utility model discloses a belong to the technical field of optics, specifically be an infrared camera lens optical axis detection device, including infrared light source, reticle, the camera lens that awaits measuring, imaging lens and the infrared detector of coaxial setting in proper order, the reticle with the camera lens that awaits measuring is installed respectively on the rotation frock, just the reticle is located on the focal plane of camera lens that awaits measuring, still including installing moving mechanism on the rotation frock for adjust the distance between infrared light source and the reticle, the beneficial effects of the utility model are that: the guide sleeve is arranged to be in sliding connection with the lens to be detected, so that the lens to be detected can rotate more stably, the image is acquired more clearly, and the detection is more accurate; by arranging the moving mechanism, the distance between the infrared light source and the lens to be detected can be conveniently adjusted, so that the image guessing definition can be conveniently adjusted; the imaging lens is used for replacing a collimator tube used in the traditional optical axis measurement, the size of the detection device is reduced, and the structure is compact.
Description
Technical Field
The utility model relates to the field of optical technology, specifically be an infrared camera lens optical axis detection device.
Background
The infrared lens can be used in night vision systems such as gun aiming, detection and monitoring, and common carrier units comprise firearms, helmets, cloud platforms and the like. In the production and assembly process of the infrared lens, the situation that the optical axis is not coincident with the mechanical axis and a certain included angle exists inevitably exists. The deviation values of the coaxiality of the infrared lenses in the same batch are different. Therefore, even if different infrared lenses are replaced for the same night vision system, the center aiming directions of the infrared lenses are slightly different, and the infrared lenses often become key factors influencing the task execution effect on a battlefield.
The utility model discloses a utility model patent with publication number CN215726714U, which discloses an infrared lens optical axis detection device, comprising an infrared light source, a reticle, a lens to be detected, an imaging lens and an infrared detector, which are coaxially arranged in sequence; the reticle and the lens to be tested are respectively arranged on a rotating tool, and the reticle is positioned on a focal plane of the lens to be tested; the rotating tool is used for driving the reticle and the lens to be tested to synchronously rotate around a mechanical shaft of the lens to be tested; the infrared detector is used for collecting a plurality of infrared images formed by infrared light irradiated on the reticle through the imaging lens in the rotating process of the reticle and the lens to be detected;
the above patents have problems:
1) The test adapter is connected with the bearing seat through a bearing, the bearing is composed of two ring bodies and steel balls, and shaking exists during rotation to cause unstable rotation of a lens to be tested and a reticle, so that image acquisition is influenced;
2) The distance between the infrared light source and the reticle is inconvenient to adjust, so that the adjustment cannot be performed when the imaging is not clear.
SUMMERY OF THE UTILITY MODEL
In view of the problem that exists among the current infrared lens optical axis detection device, provided the utility model discloses.
Therefore, the utility model aims at providing an infrared lens optical axis detection device, solved the test adaptor and connected with the bearing frame through the bearing, and the bearing comprises two ring bodies and steel ball, has rocked when rotating and has led to the fact the rotation of the lens that awaits measuring and reticle unstable, thereby influence and adopt the image; the distance between the infrared light source and the reticle is inconvenient to adjust, so that the adjustment cannot be carried out when the image is not clear.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
the utility model provides an infrared camera lens optical axis detection device, includes infrared source, reticle, the camera lens that awaits measuring, imaging lens and the infrared detector of coaxial setting in proper order, the reticle with the camera lens that awaits measuring is installed respectively on the rotation frock, just the reticle is located on the focal plane of camera lens that awaits measuring, still including installing moving mechanism on the rotation frock for adjust the distance between infrared source and the reticle.
As an infrared lens optical axis detection device's an optimal selection scheme, wherein: the rotating tool is used for driving the reticle and the lens to be tested to synchronously rotate around a mechanical shaft of the lens to be tested; the infrared detector is used for collecting a plurality of infrared images formed by the imaging lens through infrared light irradiated on the reticle in the rotation process of the reticle and the lens to be detected.
As an infrared lens optical axis detection device's an preferred scheme, wherein: the wavelength range of infrared rays emitted by the infrared light source is 1-16 mu m, and the focal length of the imaging lens is more than or equal to three times of that of the lens to be detected.
As an infrared lens optical axis detection device's an preferred scheme, wherein: the rotation range of the rotation tool is larger than or equal to 360 degrees, and the working waveband of the lens to be detected is a near infrared waveband, a medium wave infrared waveband or a long wave infrared waveband.
As an infrared lens optical axis detection device's an preferred scheme, wherein: the test adaptor is inserted into the inner cavity of the rotating tool and is mounted on the rotating tool through a bolt, the inner wall of the rotating tool is fixedly connected with a guide sleeve, and the inner wall of the guide sleeve is connected with the lens to be tested in a sliding mode.
As an infrared lens optical axis detection device's an optimal selection scheme, wherein: the lens fixing device is characterized in that a through hole is formed in the rotating tool, the inner wall of the through hole is connected with the rotating support ring in an interference fit mode, the inner wall of the rotating support ring is connected with the fixing ring in a sliding mode, and the fixing ring is fixedly installed on the lens to be detected.
As an infrared lens optical axis detection device's an optimal selection scheme, wherein: the moving mechanism comprises a servo motor, an output shaft of the servo motor is connected with a threaded rod, the outer wall of the threaded rod is in threaded connection with a driving block, the driving block is fixedly installed on the infrared light source, one end of the threaded rod is connected with the rotating tool through a bearing in a rotating mode, the servo motor is fixedly installed on a supporting plate, and the supporting plate is connected with the rotating tool through an L-shaped supporting rod.
As an infrared lens optical axis detection device's an optimal selection scheme, wherein: the moving mechanism comprises an electric telescopic rod, one end of the electric telescopic rod is detachably connected with a driving block installed on the infrared light source, and the other end of the electric telescopic rod is detachably connected with the rotating tool.
As an infrared lens optical axis detection device's an preferred scheme, wherein: the electric telescopic handle is characterized in that a first connecting seat is fixedly mounted on the driving block, a second connecting seat is fixedly mounted on the rotating tool, the inner walls of the first connecting seat and the second connecting seat are all inserted with electric telescopic handles, and the first connecting seat and the second connecting seat are all connected with the electric telescopic handles through bolts.
Compared with the prior art:
1. the guide sleeve is arranged to be in sliding connection with the lens to be detected, so that the lens to be detected can rotate more stably, the image is acquired more clearly, and the detection is more accurate;
2. by arranging the moving mechanism, the distance between the infrared light source and the lens to be detected can be conveniently adjusted, so that the image guessing definition can be conveniently adjusted; the imaging lens is used for replacing a collimator tube used in the traditional optical axis measurement, the size of the detection device is reduced, and the structure is compact.
Drawings
Fig. 1 is a schematic structural diagram provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram provided in embodiment 2 of the present invention;
fig. 3 is a schematic diagram of the optical principle provided by the present invention (in which the lens is simplified);
fig. 4 is a schematic diagram of a motion trajectory of the reticle imaging feature point provided by the present invention.
In the figure: the device comprises an infrared light source 1, a driving block 11, a reticle 2, a rotating tool 3, a test adapter 31, a guide sleeve 32, a rotating support ring 33, a fixing ring 34, a through hole 35, a lens 4 to be tested, an imaging lens 5, an infrared detector 6, a computer 7, a threaded rod 81, a support plate 82, a servo motor 83, a chain 84, an electric telescopic rod 91, a first connecting seat 92 and a second connecting seat 93.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The utility model provides an infrared camera lens optical axis detection device, please refer to fig. 1, fig. 3-4, including coaxial setting's infrared light source 1, reticle 2, camera lens 4 that awaits measuring, imaging lens 5 and infrared detector 6 in proper order, reticle 2 and camera lens 4 that awaits measuring are installed respectively on rotating frock 3, and reticle 2 is located the focal plane of camera lens 4 that awaits measuring, still including installing the moving mechanism on rotating frock 3 for adjust the distance between infrared light source 1 and the reticle 2.
The rotating tool 3 is used for driving the reticle 2 and the lens 4 to be tested to synchronously rotate around a mechanical shaft of the lens 4 to be tested; the infrared detector 6 is used for collecting a plurality of infrared images formed by the infrared light irradiated on the reticle 2 through the imaging lens 5 in the rotating process of the reticle 2 and the lens 4 to be detected.
The wavelength range of infrared rays emitted by the infrared light source 1 is 1-16 mu m, the focal length of the imaging lens 5 is more than or equal to three times of the focal length of the lens 4 to be detected, the rotating range of the rotating tool 3 is more than or equal to 360 degrees, and the working waveband of the lens 4 to be detected is a near infrared waveband, a medium wave infrared waveband or a long wave infrared waveband.
The test adaptor 31 is inserted into the inner cavity of the rotary tool 3, the test adaptor 31 is mounted on the rotary tool 3 through a bolt, the inner wall of the rotary tool 3 is fixedly connected with the guide sleeve 32, the inner wall of the guide sleeve 32 is connected with the lens 4 to be tested in a sliding mode, the rotary tool 3 is provided with a through hole 35, the inner wall of the through hole 35 is connected with the rotary support ring 33 in an interference fit mode, the inner wall of the rotary support ring 33 is connected with the fixed ring 34 in a sliding mode, and the fixed ring 34 is fixedly mounted on the lens 4 to be tested.
The moving mechanism comprises a servo motor 83, an output shaft of the servo motor 83 is in transmission connection with a threaded rod 81, chain wheels are fixed on the output shaft of the servo motor 83 and the threaded rod 81, the output shaft of the servo motor 83 is in transmission connection with the chain wheels on the threaded rod 81 through a chain 84, the outer wall of the threaded rod 81 is in threaded connection with a driving block 11, the driving block 11 is fixedly installed on the infrared light source 1, one end of the threaded rod 81 is in rotary connection with the rotating tool 3 through a bearing, the servo motor 83 is fixedly installed on a supporting plate 82, and the supporting plate 82 is connected with the rotating tool 3 through an L-shaped supporting rod; the servo motor 83 functions to power the rotation of the threaded rod 81.
When the infrared imaging device is used specifically, the reticle 2 and the lens 4 to be detected are installed on the rotating tool 3, the rotating tool 3 drives the reticle 2 and the lens 4 to be detected to rotate around a mechanical shaft of the lens 4 to be detected, infrared light emitted by the infrared light source 1 irradiates on the reticle 2 with imaging characteristic points, and the lens 4 to be detected collimates an image of the reticle 2 and then images the image to the infrared detector 6 through the imaging lens 5 to obtain an infrared image; the infrared detector 6 can obtain a series of continuous infrared images along with the rotation of the tool 3 to drive the lens 4 to be detected to rotate by 360 degrees, the computer 7 reads and stores the infrared images, obtains the motion trail of the imaging characteristic points according to the infrared images, and calculates the optical axis deviation of the infrared lens product according to the motion trail of the imaging characteristic points; when the distance between the infrared light source 1 and the reticle 2 needs to be adjusted, the servo motor 83 is started to drive the threaded rod 81 to rotate, so that the driving block 11 moves, the infrared light source 1 is driven to move, and the adjustment of the distance between the infrared light source 1 and the reticle 2 is completed.
Example 2:
referring to fig. 2, the difference from embodiment 1 is: moving mechanism includes electric telescopic handle 91, the one end of electric telescopic handle 91 can be dismantled and connect the drive block 11 of installing on infrared light source 1, the other end can be dismantled and connect rotation frock 3, fixed mounting has first connecting seat 92 on the drive block 11, fixed mounting has second connecting seat 93 on the rotation frock 3, electric telescopic handle 91 is all pegged graft to first connecting seat 92 and second connecting seat 93 inner wall, first connecting seat 92 and second connecting seat 93 all are connected with electric telescopic handle 91 through the bolt.
When the infrared imaging device is used specifically, the reticle 2 and the lens 4 to be detected are installed on the rotating tool 3, the rotating tool 3 drives the reticle 2 and the lens 4 to be detected to rotate around a mechanical shaft of the lens 4 to be detected, infrared light emitted by the infrared light source 1 irradiates on the reticle 2 with imaging characteristic points, and the lens 4 to be detected collimates an image of the reticle 2 and then images the image to the infrared detector 6 through the imaging lens 5 to obtain an infrared image; the infrared detector 6 can obtain a series of continuous infrared images along with the rotation of the tool 3 to drive the lens 4 to be detected to rotate by 360 degrees, the computer 7 reads and stores the infrared images, obtains the motion trail of the imaging characteristic points according to the infrared images, and calculates the optical axis deviation of the infrared lens product according to the motion trail of the imaging characteristic points; when the distance between the infrared light source 1 and the reticle 2 needs to be adjusted, the infrared light source 1 is driven to move through the extension and retraction of the electric telescopic rod 91, so that the adjustment of the distance between the infrared light source 1 and the reticle 2 is completed.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides an infrared camera lens optical axis detection device, includes infrared light source (1), reticle (2), the camera lens (4) that awaits measuring, imaging lens (5) and infrared detector (6) of coaxial setting in proper order, reticle (2) with camera lens (4) that awaits measuring are installed respectively on rotating frock (3), just reticle (2) are located on the focal plane of camera lens (4) that awaits measuring, its characterized in that: the infrared reticle dividing device is characterized by further comprising a moving mechanism arranged on the rotating tool (3) and used for adjusting the distance between the infrared light source (1) and the reticle (2).
2. The infrared lens optical axis detection device according to claim 1, wherein the rotation tool (3) is configured to drive the reticle (2) and the lens to be detected (4) to synchronously rotate around a mechanical axis of the lens to be detected (4); the infrared detector (6) is used for collecting infrared light irradiated on the reticle (2) in the rotating process of the reticle (2) and the lens to be detected (4) and forming a plurality of infrared images through the imaging lens (5).
3. The device for detecting the optical axis of the infrared lens as claimed in claim 1, wherein the infrared light source (1) emits infrared light in a wavelength range of 1 μm to 16 μm, and the focal length of the imaging lens (5) is greater than or equal to three times the focal length of the lens (4) to be detected.
4. The device for detecting the optical axis of the infrared lens as claimed in claim 1, wherein the rotation range of the rotating tool (3) is greater than or equal to 360 degrees, and the working waveband of the lens (4) to be detected is a near infrared waveband, a medium infrared waveband or a long infrared waveband.
5. The infrared lens optical axis detection device according to claim 1, characterized in that a test adaptor (31) is inserted into an inner cavity of the rotary tool (3), the test adaptor (31) is mounted on the rotary tool (3) through a bolt, a guide sleeve (32) is fixedly connected to an inner wall of the rotary tool (3), and the inner wall of the guide sleeve (32) is slidably connected to the lens (4) to be detected.
6. The device for detecting the optical axis of the infrared lens according to claim 1, wherein the rotating tool (3) is provided with a through hole (35), the inner wall of the through hole (35) is connected with the rotating support ring (33) in an interference fit manner, the inner wall of the rotating support ring (33) is slidably connected with the fixing ring (34), and the fixing ring (34) is fixedly installed on the lens (4) to be detected.
7. The infrared lens optical axis detection device according to claim 1, wherein the moving mechanism comprises a servo motor (83), an output shaft of the servo motor (83) is connected with a threaded rod (81), an outer wall of the threaded rod (81) is connected with a driving block (11) in a threaded manner, the driving block (11) is fixedly mounted on the infrared light source (1), one end of the threaded rod (81) is connected with the rotating tool (3) through a bearing in a rotating manner, the servo motor (83) is fixedly mounted on a supporting plate (82), and the supporting plate (82) is connected with the rotating tool (3) through an L-shaped supporting rod.
8. The device for detecting the optical axis of the infrared lens according to claim 1, wherein the moving mechanism comprises an electric telescopic rod (91), one end of the electric telescopic rod (91) is detachably connected to a driving block (11) installed on the infrared light source (1), and the other end of the electric telescopic rod is detachably connected to the rotating tool (3).
9. The infrared lens optical axis detection device according to claim 8, wherein a first connecting seat (92) is fixedly mounted on the driving block (11), a second connecting seat (93) is fixedly mounted on the rotating tool (3), inner walls of the first connecting seat (92) and the second connecting seat (93) are respectively inserted into an electric telescopic rod (91), and the first connecting seat (92) and the second connecting seat (93) are respectively connected with the electric telescopic rod (91) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630096.6U CN218496378U (en) | 2022-06-27 | 2022-06-27 | Infrared camera lens optical axis detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630096.6U CN218496378U (en) | 2022-06-27 | 2022-06-27 | Infrared camera lens optical axis detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218496378U true CN218496378U (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221630096.6U Active CN218496378U (en) | 2022-06-27 | 2022-06-27 | Infrared camera lens optical axis detection device |
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| Country | Link |
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| CN (1) | CN218496378U (en) |
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- 2022-06-27 CN CN202221630096.6U patent/CN218496378U/en active Active
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