CN218002715U - Optical performance detection system of camera device - Google Patents
Optical performance detection system of camera device Download PDFInfo
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- CN218002715U CN218002715U CN202222525480.6U CN202222525480U CN218002715U CN 218002715 U CN218002715 U CN 218002715U CN 202222525480 U CN202222525480 U CN 202222525480U CN 218002715 U CN218002715 U CN 218002715U
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Abstract
The application relates to the technical field of camera devices, and discloses an optical performance detection system of a camera device, which comprises: the target bears carrier, a plurality of optical property targets, anchor clamps, and a plurality of optical property targets can dismantle selectively and connect on the target bears carrier, and anchor clamps are used for the clamping camera device that awaits measuring, and anchor clamps are located the place ahead that the target bore carrier. When certain optical performance needs to be detected, the corresponding optical performance targets are selected to be connected to the target bearing piece, after the optical performance test is completed, another optical performance target is selected to be connected to the target bearing piece, or a plurality of optical performance targets are simultaneously installed on the target bearing piece, so that the detection of different optical performances in the same test scene can be met, and the test efficiency can be improved.
Description
Technical Field
The present disclosure relates to imaging devices, and particularly to an optical performance detection system for an imaging device.
Background
The camera device mainly comprises a visible light camera device and an invisible light camera device, and the invisible light camera device belongs to a thermal infrared imager and is the most common. In the manufacturing process of the thermal infrared imager, the optical performance of the thermal infrared imager needs to be detected, and the optical performance mainly comprises the following steps: distortion, field angle, optical axis uniformity, sharpness, and focal length.
The optical performance is detected by more mature methods in a visible light waveband, but an infrared waveband belongs to an invisible light waveband, so that the method for measuring the visible light waveband has certain limitation in the infrared waveband.
In addition, when the optical performance is tested in the visible light band, different test scenes are usually required to be replaced to test different optical performance, and the production efficiency is affected by frequently replacing the test scenes.
Therefore, how to provide an optical performance detection system of an image pickup apparatus to improve detection efficiency is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an optical performance detection system of an image pickup device, which can effectively improve the detection efficiency.
In order to achieve the above purpose, the present application provides the following technical solutions:
an optical performance detection system of an image pickup apparatus, comprising: the target bears a carrier, a plurality of optical performance targets, anchor clamps, it is a plurality of optical performance targets can dismantle the connection selectively and hold the carrier on the target, anchor clamps are used for the clamping camera device that awaits measuring, anchor clamps are located the place ahead that the target held the carrier.
Preferably, the target carrier comprises a first target frame and a second target frame, the plurality of optical performance targets are respectively a field angle target, a distortion target, an optical axis consistency target and a definition target, the field angle target or the distortion target is detachably connected in the first target frame, and the optical axis consistency target or the definition target is detachably connected in the second target frame.
Preferably, the first target frame is a rectangular target frame, the second target frame is a square target frame, the field angle target and the distortion target are rectangular targets placed in the rectangular target frame, and the optical axis consistency target or the definition target is a square target placed in the square target frame.
Preferably, a plurality of hollow rectangles which are distributed at equal intervals are arranged on the field angle target, the length-width ratio of each hollow rectangle is 3.
Preferably, a plurality of first hollowed-out circles distributed at equal intervals are arranged on the distortion target, the diameter of each first hollowed-out circle is 50-150 mm, and the diameter ratio of the interval between every two adjacent first hollowed-out circles to the first hollowed-out circle is 1-4.
Preferably, the optical axis consistency target is provided with a second hollowed circular shape, and the diameter range of the second hollowed circular shape is 100-300 mm.
Preferably, the top view of the definition target is a trapezoid, and the included angle between the inclined edge of the trapezoid and the vertical line is 5-10 degrees.
Preferably, the fixture further comprises a height-adjustable tool, and the fixture is detachably connected to the height-adjustable tool.
Preferably, two adjacent side surfaces of the clamp are respectively provided with a connecting hole position, and the connecting hole position on one side surface of the clamp can be selected to be connected with the height-adjustable tool.
Preferably, the device further comprises a preheating device for preheating the target carrier.
Compared with the prior art, the technical scheme has the following advantages:
the application provides an optical performance detecting system of camera device, includes: the target bears carrier, a plurality of optical property targets, anchor clamps, and a plurality of optical property targets can dismantle selectively and connect on the target bears carrier, and anchor clamps are used for the clamping camera device that awaits measuring, and anchor clamps are located the place ahead that the target bore carrier. When certain optical performance needs to be detected, the corresponding optical performance targets are selected to be connected to the target bearing piece, after the optical performance test is completed, another optical performance target is selected to be connected to the target bearing piece, or a plurality of optical performance targets are simultaneously installed on the target bearing piece, so that the detection of different optical performances in the same test scene can be met, and the test efficiency can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical performance detection system of an image capturing apparatus according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the field angle target;
FIG. 3 is a schematic structural diagram of a distortion target;
FIG. 4 is a schematic diagram of an optical axis conformance target;
FIG. 5 is a schematic diagram of the structure of a definition target;
FIG. 6 is a schematic structural diagram of an optical axis consistency and sharpness test target;
FIG. 7 is a schematic view of the structure of the clamp;
FIG. 8 is a schematic structural view of a height adjustable fixture;
FIG. 9 is a schematic top view of the height adjustable tooling;
FIG. 10 is a schematic structural view of one side of the clamp mounted on the height adjustable fixture;
fig. 11 is a schematic structural view of the other side of the clamp mounted on the height-adjustable tool.
The reference numbers are as follows:
1 is a target bearing piece, 11 is a rectangular target frame, 111 is a field angle target, 1111 is a hollowed rectangle, 112 is a distortion target, 1121 is a first hollowed circular shape, 12 is a square target frame, 121 is an optical axis consistency target, 1211 is a second hollowed circular shape, 122 is a definition target, 1221 is a trapezoidal bevel edge, 1222 is a vertical line, 123 is an optical axis consistency and definition test target, 1231 is a third hollowed circular shape, and 1232 is an inclined hollowed rectangle;
2, a clamp, 21 a positioning pin hole, 22 a bolt hole and 23 a spring;
3 is height-adjustable frock, 31 is adjustable landing leg, and 32 is the recess.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Please refer to fig. 1 to 11.
The optical performance detection system of the image pickup apparatus provided by the embodiment of the present application includes: the target bears a weight of 1, a plurality of optical property targets, anchor clamps 2, and a plurality of optical property targets can be dismantled selectively and connect on the target bears a weight of 1, and anchor clamps 2 are used for the clamping camera device that awaits measuring, and the host computer passes through communication interface and is connected with the camera device that awaits measuring to realize carrying out image acquisition and processing to optical property, anchor clamps 2 are located the place ahead that the target bore a weight of 1. When certain optical performance needs to be detected, the corresponding optical performance targets are selected to be connected to the target bearing part 1, after the optical performance test is completed, another optical performance target is selected to be connected to the target bearing part 1, or a plurality of optical performance targets are simultaneously installed on the target bearing part 1, so that the detection of different optical performances in the same test scene can be met, and the test efficiency can be improved.
Specifically, the target carrier 1 includes a first target frame and a second target frame, the plurality of optical performance targets are a field angle target 111, a distortion target 112, an optical axis consistency target 121, and a sharpness target 122, respectively, the field angle target 111 or the distortion target 112 is detachably connected in the first target frame, and the optical axis consistency target 121 or the sharpness target 122 is detachably connected in the second target frame. The first target frame is preferably a rectangular target frame 11, and the second target frame is preferably a square target frame 12.
As shown in fig. 1, two rectangular target frames 11 are respectively disposed on two sides of the square target frame 12, the optical axis consistency target 121 or the sharpness target 122 may be installed in the square target frame 12, one rectangular target frame 11 may be installed with the angle-of-view target 111, the other rectangular target frame 11 may be installed with the distortion target 112, or two rectangular target frames 11 are respectively installed with one angle-of-view target 111, or two rectangular target frames 11 are respectively installed with one distortion target 112.
Wherein the field angle target 111 and the distortion target 112 are preferably rectangular targets placed in the rectangular target frame 11, and the optical axis coincidence target 121 and the sharpness target 122 are preferably square targets placed in the square target frame 12. The rectangular target frame 11 and the square target frame 12 are only preferred shapes, and other shapes may be selected, and may be specifically selected according to actual needs.
As shown in fig. 2, the field angle target 111 is provided with a plurality of hollow rectangles 1111 distributed at equal intervals, the aspect ratio of the hollow rectangles 1111 is preferably 3 to 1, and the ratio of the interval between adjacent hollow rectangles 1111 to the width of the hollow rectangles 1111 is preferably 1 to 1, wherein the numerical ranges of the aspect ratio, the interval and the width ratio include end points, and in addition, in the actual test, the corresponding ratio range can be adjusted as required.
As shown in fig. 3, a plurality of first hollowed-out circles 1121 which are distributed at equal intervals are arranged on the distortion target 112, the diameter of each first hollowed-out circle 1121 is preferably 50mm to 150mm, and the preferred ratio of the interval between adjacent first hollowed-out circles 1121 to the diameter of each first hollowed-out circle 1121 is 1 to 1, wherein the ranges of the diameters and the intervals and the diameter ratio include end point values, and in addition, during an actual test, the corresponding ratio range can be adjusted as required.
As shown in fig. 4, a second hollow circle 1211 is disposed on the optical axis consistency target 121, and a diameter range of the second hollow circle 1211 is preferably 100-300 mm, which includes end points, and the value range can be specifically adjusted according to actual requirements.
As shown in fig. 5, the top view of the definition target 122 is a trapezoid, and the included angle between the inclined side 1221 of the trapezoid and the vertical line 1222 is preferably 5 ° to 10 °, inclusive, and the angle range can be adjusted according to actual needs.
As shown in fig. 6, in order to satisfy the simultaneous test of the optical axis consistency and the definition, an optical axis consistency and definition test target 123 is designed, the test target can be placed in a square target frame 12, a third hollowed circular 1231 is arranged in the middle of the test target for measuring the definition, the diameter range is 100mm to 350mm, an inclined hollowed rectangle 1232 is respectively arranged around the third hollowed circular 1231 for measuring the optical axis consistency, the length-width ratio of the inclined hollowed rectangle 1232 is within a range of 1 to 1, the inclination range of a vertical line relative to the vertical direction is 2 ° to 10 °, wherein the values of each range include end point values.
In some embodiments, the height-adjustable fixture comprises a height-adjustable fixture 3, the fixture 2 is detachably connected to the height-adjustable fixture 3, a cavity for placing a camera device is arranged in the middle of the fixture 2, the camera device can be fastened in the cavity through a spring 23, and the height-adjustable fixture 3 mainly supports the fixture 2. Wherein, two adjacent side surfaces on the clamp 2 are respectively provided with a connecting hole site, and the clamp 2 can select the connecting hole site on one side surface to be connected with the height-adjustable tool 3, as shown in fig. 10 and 11.
As shown in fig. 7, two mutually perpendicular side surfaces of the fixture 2 are respectively provided with a positioning pin hole 21 and two bolt holes 22 located at two sides of the positioning pin hole 21, and correspondingly, the height-adjustable fixture 3 is also provided with hole sites corresponding to the positioning pin hole 21 and the bolt holes 22, wherein the positioning pin hole 21 is used for positioning, and the bolt holes 22 are used for fixing the fixture 2 on the height-adjustable fixture 3. The data acquisition of the horizontal direction and the vertical direction of the camera device can be realized through two connecting side surfaces of the clamp 2, so that the horizontal/vertical field of view and the horizontal/vertical distortion can be measured.
As shown in fig. 8, the height-adjustable tool 3 includes an upper plate and a bottom plate, the upper plate and the bottom plate are connected by a plurality of vertical rods, the bottom plate is provided with adjustable legs 31, the adjustable legs 31 can be connected with the bottom plate through threads, and the purpose of adjusting the height of the bottom plate can be achieved by screwing the adjustable legs 31.
As shown in fig. 9, a groove 32 is formed in the top of the height-adjustable tooling 3, one side of the fixture 2 can be placed in the groove 32, and then the fixture is fixed by a bolt, so that the stability of the fixture 2 during installation can be improved by the groove 32.
In some embodiments, a preheating device, preferably an electric heating device, is further comprised for preheating the target carrier 1. The electric heating device is preferably a plane source black body, a rectangular plane source black body is arranged in the rectangular target frame 11, a square plane source black body is arranged in the square target frame 12, and the rectangular plane source black body and the square plane source black body are used for providing heat radiation for the target so as to meet the requirement for optical performance detection of the invisible light camera device.
The following description will be given by taking the optical performance detection of the thermal infrared imager as an example:
1. the testing steps of the infrared thermal imager focal length are as follows:
step 4, installing the clamp 2 into the tool;
step 5, adjusting the distance between the clamp 2 and the square target frame 12, wherein the distance is not less than the hyperfocal distance of the lens, the hyperfocal distance = focal length ^ 2/(diffusion diameter multiplied by F), and F is an aperture coefficient;
and 6, starting the upper computer, acquiring and calculating data, repeating the steps for multiple times to obtain multiple focal length values, and taking the average value of the focal length values as the focal length value of the sample.
2. The testing steps of the infrared thermal imager field of view are as follows:
step 4, installing the clamp 2 into a tool;
step 5, adjusting the distance between the clamp 2 and the rectangular target frame 11, wherein the distance is not less than the hyperfocal distance of the lens, the hyperfocal distance = focal length ^ 2/(diffusion diameter multiplied by F), and F is an aperture coefficient;
and 7, rotating the clamp 2 by 90 degrees, then reinstalling the clamp into the height-adjustable tool 3, and performing the step 6 again to obtain the angle of view in the other direction.
3. The method for testing the definition of the thermal infrared imager comprises the following steps:
step 4, installing the clamp 2 into a tool;
step 5, adjusting the distance between the clamp 2 and the square target frame 12, wherein the distance is not less than the hyperfocal distance of the lens, the hyperfocal distance = focal length ^ 2/(diffusion diameter multiplied by F), and F is an aperture coefficient;
and 6, starting the upper computer, acquiring data, calculating, repeating the steps for multiple times to obtain multiple definition values, and taking the average value of the definition values as the definition values of the sample.
4. The thermal infrared imager optical axis consistency testing method comprises the following steps:
step 4, installing the clamp 2 into a tool;
step 5, adjusting the distance between the clamp 2 and the square target frame 12, wherein the distance is not less than the hyperfocal distance of the lens, the hyperfocal distance = focal length ^ 2/(diffusion diameter multiplied by F), and F is an aperture coefficient;
and 6, starting the upper computer, acquiring and calculating data, repeating the steps for multiple times to obtain a plurality of optical center coordinate values, and taking the average value of the optical center coordinate values as the optical center coordinate value of the sample.
5. The method for testing the distortion of the thermal infrared imager comprises the following steps:
step 4, installing the clamp 2 into a tool;
step 5, adjusting the distance between the clamp 2 and the rectangular target frame 11, wherein the distance is not less than the hyperfocal distance of the lens, the hyperfocal distance = focal length ^ 2/(diffusion diameter multiplied by F), and F is an aperture coefficient;
and 7, rotating the clamp 2 by 90 degrees, then reinstalling the clamp into the height-adjustable tool 3, and performing the step 6 again to obtain the distortion value in the other direction.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The optical performance detection system of the image pickup apparatus provided in the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. An optical performance detection system of an image pickup apparatus, comprising: the target bears a carrier, a plurality of optical performance targets, anchor clamps, it is a plurality of optical performance targets can dismantle the connection selectively and hold the carrier on the target, anchor clamps are used for the clamping camera device that awaits measuring, anchor clamps are located the place ahead that the target held the carrier.
2. The optical performance detection system of the imaging apparatus according to claim 1, wherein the target carrier includes a first target frame and a second target frame, the plurality of optical performance targets are a field angle target, a distortion target, an optical axis conformance target, and a sharpness target, respectively, the field angle target or the distortion target is detachably attached in the first target frame, and the optical axis conformance target or the sharpness target is detachably attached in the second target frame.
3. The optical performance detection system of the image pickup apparatus according to claim 2, wherein the first target frame is a rectangular target frame, the second target frame is a square target frame, the field angle target and the distortion target are rectangular targets placed in the rectangular target frame, and the optical axis coincidence target and the sharpness target are square targets placed in the square target frame.
4. The optical performance detection system of the image pickup apparatus according to claim 3, wherein a plurality of hollow rectangles are provided on the field angle target at equal intervals, the aspect ratio of the hollow rectangles is from 3 to 1.
5. The system for detecting optical performance of an imaging device according to claim 3, wherein a plurality of first hollowed-out circles are arranged on the distortion target at equal intervals, a diameter of each first hollowed-out circle is 50mm to 150mm, and a diameter ratio of an interval between adjacent first hollowed-out circles to the first hollowed-out circle is from 2.
6. The system for detecting optical performance of an imaging device according to claim 3, wherein a second hollow circle is provided on the target for optical axis consistency, and a diameter range of the second hollow circle is 100 to 300mm.
7. The system for detecting optical performance of an image pickup apparatus according to claim 3, wherein the top view of the sharpness target is a trapezoid, and an angle between a diagonal side of the trapezoid and a vertical line is 5 ° to 10 °.
8. The system for detecting optical performance of an imaging device according to claim 1, further comprising a height-adjustable fixture, wherein the jig is detachably attached to the height-adjustable fixture.
9. The system for detecting optical performance of a camera device according to claim 8, wherein two adjacent side surfaces of the fixture are respectively provided with a connecting hole, and the fixture can select the connecting hole on one side surface to connect with the height-adjustable tool.
10. The system for detecting optical performance of an imaging device according to any one of claims 1 to 9, further comprising a preheating device for preheating the target carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222525480.6U CN218002715U (en) | 2022-09-23 | 2022-09-23 | Optical performance detection system of camera device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222525480.6U CN218002715U (en) | 2022-09-23 | 2022-09-23 | Optical performance detection system of camera device |
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| CN218002715U true CN218002715U (en) | 2022-12-09 |
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| CN202222525480.6U Active CN218002715U (en) | 2022-09-23 | 2022-09-23 | Optical performance detection system of camera device |
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