CN217690124U - Camera synchronous calibration test equipment - Google Patents
Camera synchronous calibration test equipment Download PDFInfo
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- CN217690124U CN217690124U CN202221669728.XU CN202221669728U CN217690124U CN 217690124 U CN217690124 U CN 217690124U CN 202221669728 U CN202221669728 U CN 202221669728U CN 217690124 U CN217690124 U CN 217690124U
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Abstract
The utility model provides a synchronous calibration test equipment of camera, include: an incident assembly for receiving light containing test image information; the branching component is arranged at the downstream of the receiving optical path of the incidence component and is used for branching the light containing the test image information into at least two test lights with different optical path directions; and the positioning component is arranged on the emergent light path of the test light and used for positioning the image receiving head so that the image receiving head receives the test light. Different image receiving heads can be respectively positioned by different positioning assemblies, so that the different image receiving heads are respectively aligned with emergent light paths corresponding to the test light, the test image is placed at the front end of the incident assembly, the light containing the test image information is transmitted to the shunting assembly through the incident assembly, then the light is split by the shunting assembly to form at least two paths of test light, and each path of test light contains the test image information, so that each image receiving head can synchronously receive the same test image, and the calibration test of a plurality of receiving heads on the same target image is realized.
Description
Technical Field
The utility model belongs to the technical field of the optical determination, especially, relate to a synchronous calibration test equipment of camera.
Background
Binocular or multi-view vision means that two or more image receiving heads are used for receiving images, and then three-dimensional information of a target is obtained according to each received image through a correlation algorithm. One of the key technologies of binocular or multi-ocular vision is the calibration of a camera, and the shooting of the camera is a physical process of mapping points in a three-dimensional space into a two-dimensional image; the camera calibration is carried out, so that the relevant parameters of the corresponding transformation of the three-dimensional space coordinate and the two-dimensional image coordinate can be obtained, and the three-dimensional space position can be calculated according to the two-dimensional coordinate of the target point in the image.
In the related art, different image receiving heads of a camera usually perform calibration tests independently, but the method cannot ensure that the test environments are the same each time, and the calibration test time points of the image receiving heads are different, so that the shooting parameters of the different image receiving heads to the same target at the same time cannot be measured.
SUMMERY OF THE UTILITY MODEL
A technical object of the utility model is to provide a camera is markd test equipment in step can realize a plurality of receiving heads in step to the demarcation test of same target.
In order to solve the technical problem, the utility model discloses a realize like this, provide a camera and mark test equipment in step, include:
an incident assembly for receiving light containing test image information;
the branching component is arranged at the downstream of the receiving optical path of the incidence component and is used for branching the light containing the test image information into at least two test lights with different optical path directions; and the number of the first and second groups,
and the positioning component is arranged on the emergent light path of the test light and is used for positioning the image receiving head so that the image receiving head receives the test light.
Further, the incidence assembly comprises a receiving lens positioned at the front end of the receiving optical path and a focusing structure connected to the downstream end of the receiving optical path of the receiving lens.
Further, the incidence assembly further comprises a relay lens connected to the downstream end of the receiving optical path of the focusing structure.
Furthermore, the branch assembly comprises a dark box connected to the downstream end of the receiving light path of the incident assembly and a beam splitter fixed in the dark box, the beam splitter is located on the optical axis of the receiving light path, and an exit port on the exit light path is formed in the dark box.
Further, the shunt assembly further comprises a filter mounted at the exit.
Further, the splitter component further includes a sleeve extending from the exit port toward the positioning component in a corresponding direction.
Furthermore, the camera synchronous calibration test equipment further comprises a base, a first fixed seat fixed on the base and a second fixed seat fixed on the base, wherein the incident component is assembled on the first fixed seat, the shunt component is assembled on the second fixed seat, and the positioning component is assembled on the base.
Furthermore, the camera synchronous calibration test equipment further comprises a positioning table fixed on the base.
Furthermore, the positioning assembly comprises a moving platform assembled on the base and a limiting structure connected to the moving platform, the moving platform is used for driving the limiting structure to move in the space, and the limiting structure is used for installing the image receiving head.
Further, the mobile platform adopts an xyz mobile platform.
Furthermore, the limiting structure comprises a connecting plate connected to one side of the moving platform close to the shunt assembly and an optical adjusting frame fixed to the connecting plate, and the optical adjusting frame is used for clamping the installation image receiving head.
Further, the optical adjusting frame comprises a base body fixed on the connecting plate, a clamping jaw movably connected to the base body and an adjusting piece connected between the base body and the clamping jaw, and the adjusting piece is used for adjusting an angle between the clamping jaw and the base body.
The utility model discloses well camera is markd test equipment in step compares with prior art, and beneficial effect lies in:
when synchronous calibration test of different image receiving heads of a camera is carried out, different image receiving heads can be respectively positioned by different positioning assemblies so as to respectively align to emergent light paths of corresponding test light, a test image (test target) is placed at the front end of an incidence assembly, light containing test image information is transmitted to a shunting assembly through the incidence assembly and then split by the shunting assembly to form at least two paths of test light, and each path of test light contains the test image information, so that each image receiving head can synchronously receive the same test image, and calibration test of a plurality of receiving heads on the same target image is realized.
Drawings
Fig. 1 is the utility model discloses in the embodiment whole structure schematic diagram of synchronous calibration test equipment of camera.
In the drawings, each reference numeral indicates: 1. an incident assembly; 2. a shunt assembly; 3. a positioning assembly; 4. a base; 5. a first fixed seat; 6. a second fixed seat; 7. a positioning table; 11. receiving a lens; 12. a focusing structure; 13. a relay lens; 21. a dark box; 22. a sleeve; 31. a mobile platform; 32. a limiting structure; 321. a connecting plate; 322. an optical adjustment frame; 3221. a base; 3222. a clamping jaw; 3223. an adjusting member.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to be used for explaining the present invention, but should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this embodiment, referring to fig. 1, a camera synchronous calibration testing apparatus is provided, including: an incident assembly 1 for receiving light containing test image information; the branching component 2 is arranged at the downstream of the receiving optical path of the incidence component 1 and is used for branching the light containing the test image information into at least two paths of test light with different optical path directions; and the positioning component 3 is arranged on the emergent light path of the test light and is used for positioning the image receiving head so that the image receiving head receives the test light.
When the synchronous calibration test of different image receiving heads of a camera is carried out, different image receiving heads can be respectively positioned by different positioning components 3, so that the emergent light paths corresponding to test light are respectively aligned, a test image (test target) is placed at the front end of an incidence component 1, light containing test image information is transmitted to a shunting component 2 through the incidence component 1, then at least two paths of test light are formed by the shunting component 2 in a splitting mode, each path of test light contains test image information, therefore, each image receiving head can synchronously receive the same test image, and the calibration test of a plurality of receiving heads on the same target image is realized.
In this embodiment, the camera synchronization calibration testing apparatus further includes a base 4, a first fixing seat 5 fixed to the base 4, and a second fixing seat 6 fixed to the base 4, wherein the incident component 1 is assembled on the first fixing seat 5, the shunt component 2 is assembled on the second fixing seat 6, and the positioning component 3 is assembled on the base 4.
The second fixing seat 6 can adjust the seat and connect in the second regulation pole of adjusting the seat in the second including connecting in the second of base 4, one side setting of second regulation seat has the second regulating block of bar regulation hole, the second regulating block can be through screwed connection on base 4, therefore, the second is adjusted the seat and is adjustable for base 4 position on the horizontal direction, the second is adjusted the pole and is slide assembly on the direction of height and adjust a top at the second, one side of second regulation seat can set up the second set screw that is used for fixed second regulation pole, consequently, the second is adjusted the pole and is adjustable in the direction of height for base 4. In some embodiments, the second adjustment seat may be integrally connected to the base plate 4. In some embodiments, the second adjusting base may be slidably connected to the base 4 through a sliding rail. It should be understood that the arrangement form of the second fixing base 6 is not limited to the above-mentioned arrangement, as long as the incident assembly 1 can be assembled on the base 4.
The camera synchronous calibration test equipment further comprises a positioning table 7 fixed on the base 4. The positioning table 7 can be provided with a positioning structure, the circuit board can be arranged on the positioning table 7 through the positioning structure in the test process, each image receiving head is electrically connected to the circuit board, and each image receiving head is positioned by the positioning component 3 respectively, so that synchronous calibration operation is realized, and the test is more convenient.
The incidence assembly 1 includes a receiving lens 11 at a front end of a receiving optical path and a focusing structure 12 connected to a downstream end of the receiving optical path of the receiving lens 11.
Specifically, in the present embodiment, the receiving lens 11 is a fixed focus lens, which has a model MVL8M23, an effective focal length of 8mm, and an aperture size of f/1.4, and light including a test image formed by a test object is received and achromatized by the receiving lens 11; the focusing structure 12 includes an adjustable sleeve connected to the receiving lens 11 and a lens barrel connected to the adjustable sleeve, the first fixing seat 5 further includes a first mounting ring assembled on the top end of the first adjusting rod, the lens barrel penetrates through the first mounting ring and is fixed by the first mounting ring, and a threaded connection mode can be adopted between the adjustable sleeve and the lens barrel, so that the position of the adjustable sleeve can be adjusted relative to the lens barrel in the axial direction, and focusing on the receiving lens 11 is realized. It should be understood that the receiving lens 11 is not limited to the fixed focus lens set by the foregoing parameters, for example, when the fixed focus lens is adopted, the effective focal length may be within 6-10mm, the aperture size may be f/1.6-f/1.2, and the specific setting parameters may be selected according to actual situations. In addition, in some embodiments, the incidence assembly 1 may only include a lens barrel fixed to the first fixing base 5 and a zoom lens connected to the front end of the lens barrel in the incidence direction, so that the focusing structure 12 is not required to be additionally arranged, and the structure is simpler.
The entrance assembly 1 further comprises a relay lens 13 connected to the downstream end of the receiving optical path of the focusing structure 12. Specifically, in this embodiment, the model of the relay lens 13 is MAP107575-a, the matched achromatic lens pair therein is formed by gluing two achromatic lenses with a focal length of 75mm, the relay magnification is M =1, and the surface of the achromatic lens is coated with an antireflection film: 400-700nm. The relay lens 13 can be achromatic, and the light with the test image information emitted by the incident assembly 1 can be transmitted to the branching assembly 2 at equal magnification, so that the transmission distance of the received light is increased, and more space is left for installing other functional components. It should be understood that the relay lens 13 used in the foregoing embodiment is only an example, and in some embodiments, the relay lens 13 may also use the relay lens 13 with other parameter settings, such as a relay magnification of 1-1.5, and a focal length of the achromatic lens of 15-100mm.
The branch component 2 comprises a dark box 21 connected to the downstream end of the receiving light path of the incidence component 1 and a beam splitter fixed in the dark box 21, the beam splitter is positioned on the optical axis of the receiving light path, and the dark box 21 is provided with an emergent port on the emergent light path. Specifically, in this embodiment, the dark box 21 is a hollow cube, one side of which is connected to one end of the relay 13, the beam splitter is disposed on a diagonal of a top view of the dark box 21, the type of the beam splitter can be BSW26R, the beam splitter is made of an ultraviolet fused quartz material, and is flat, the size of the plate surface is 25mm x 36mm, and the dark box is semi-transparent (50): 350-1100nm and t =1mm, with the view angle of the drawing as a reference, the front side (the side facing the observer) of the dark box 21 and the opposite side of the relay mirror 13 are both provided with an exit port, the incident light is equally divided into two paths of test light after passing through the beam splitter, the two paths of test light are respectively received by the image receiving heads through the exit ports, and the images received by the two image receiving heads are the same. It should be understood that the type of the beam splitter can be adapted according to the actual situation.
In some embodiments, the splitting assembly 2 may also split the incident light into three, four, five, etc. test lights. For example: when three ways of test lights are formed by splitting, two beam splitters can be arranged at intervals behind the light path of the incident assembly 1, and the beam splitting ratios of the two beam splitters can be adaptively adjusted, for example, the beam splitting ratio of the preceding beam splitter is 1, and the beam splitting ratio of the following beam splitter is 50, so that the images of the three ways of test lights are the same, and alternatively, the beam splitter at the downstream of the light path can also be located on the light path of another way of test light (i.e., the side of the optical axis of the incident light). Based on the setting scheme of the three paths of test lights, the number of the beam splitters can be adaptively increased under the condition of facing more paths of test lights, and the beam splitting proportion of the beam splitters can be adjusted according to the actual condition, so that the image information contained in each path of test light is the same. It will be appreciated that the positioning assembly 3 is disposed on each of the test light paths of the foregoing arrangement for holding the image receiving head.
Further, the splitter component 2 further includes a filter installed at the exit. The filter type is FES0650, and the cut-off wavelength is 650nm. It should be understood that the type of filter can be selected according to actual conditions, and the cut-off wavelength can be adjusted adaptively.
The splitting assembly 2 further comprises a sleeve 22 extending from the exit port towards the positioning assembly 3 in a corresponding direction. The sleeve 22 is made of opaque material, and the arrangement of the sleeve 22 can enable the test light to be transmitted to the image receiving head under the condition of no influence of external light, so that the accuracy of synchronous calibration is ensured.
Further, the positioning assembly 3 includes a moving platform 31 assembled on the base 4 and a limiting structure 32 connected to the moving platform 31, the moving platform 31 is used for driving the limiting structure 32 to move in the space, and the limiting structure 32 is used for mounting the image receiving head.
Specifically, in this embodiment, the mobile platform 31 adopts xyz mobile platform, can drive the limit structure 32 through the mobile platform 31 and move respectively in the xyz direction, and when the image receiving head is arranged at the limit structure 32, the image receiving head can be driven to move in the space, so that the relative position of the image receiving head relative to the test light path can be adjusted more conveniently, and the calibration in the test process is facilitated.
The limiting structure 32 comprises a connecting plate 321 connected to one side of the moving platform 31 close to the branching assembly 2 and an optical adjusting bracket 322 fixed to the connecting plate 321, wherein the optical adjusting bracket 322 is used for clamping and mounting the image receiving head; the optical adjustment rack 322 includes a base 3221 fixed on the connecting plate 321, a clamping jaw 3222 movably connected to the base 3221, and an adjusting member 3223 connected between the base 3221 and the clamping jaw 3222, wherein the adjusting member 3223 is used for adjusting an angle between the clamping jaw 3222 and the base 3221. Specifically, in this embodiment, the models of the optical adjustment frame 322 disposed on the two paths of test light paths are KM100CL (for a rectangular optical element with a maximum of 1.3 inches (33 mm), a left-hand system) and KM100C (for a rectangular optical element with a maximum of 1.3 inches (33 mm), respectively, the clamping jaw 3222 may realize clamping and fixing of the image receiving head, and the angle between the clamping jaw 3222 and the base 3221 may be adjusted by the adjusting member 3223, so as to adjust the angle of the receiving axis of the image receiving head, so that the receiving axis of the image receiving head is parallel to the optical axis of the test light, and in combination with the position adjustment of the moving platform 31, the receiving axis of the image receiving head may coincide with the optical axis of the test light, so as to ensure the accuracy of timing of receiving of each image header.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (12)
1. The utility model provides a synchronous calibration test equipment of camera which characterized in that includes:
an incident assembly for receiving light containing test image information;
the branching component is arranged at the downstream of the receiving optical path of the incidence component and is used for branching the light containing the test image information into at least two test lights with different optical path directions; and (c) a second step of,
and the positioning component is arranged on the emergent light path of the test light and is used for positioning the image receiving head so that the image receiving head receives the test light.
2. The apparatus for synchronous calibration and testing of a camera according to claim 1, wherein the incidence assembly comprises a receiving lens located at a front end of a receiving optical path and a focusing structure connected to a downstream end of the receiving optical path of the receiving lens.
3. The apparatus for synchronous calibration testing of a camera according to claim 2, wherein the incidence assembly further comprises a relay lens connected to a downstream end of the receiving optical path of the focusing structure.
4. The apparatus according to claim 1, wherein the shunt assembly includes a dark box connected to a downstream end of a receiving optical path of the incident assembly, and a beam splitter fixed in the dark box, the beam splitter is located on an optical axis of the receiving optical path, and the dark box is provided with an exit port on the exit optical path.
5. The apparatus for synchronous calibration testing of a camera according to claim 4, wherein the shunt assembly further comprises a filter mounted at the exit.
6. The apparatus for synchronous calibration testing of a camera according to claim 5, wherein the splitter assembly further comprises a sleeve extending from the exit port towards the positioning assembly in a corresponding direction.
7. The apparatus according to any one of claims 1 to 6, further comprising a base, a first fixing base fixed to the base, and a second fixing base fixed to the base, wherein the incident component is mounted on the first fixing base, the shunt component is mounted on the second fixing base, and the positioning component is mounted on the base.
8. The apparatus for calibrating and testing the synchronization of camera according to claim 7, further comprising a positioning table fixed on the base.
9. The apparatus for synchronous calibration and testing of a camera according to claim 7, wherein the positioning assembly comprises a moving platform assembled on the base and a limiting structure connected to the moving platform, the moving platform is used for driving the limiting structure to move in space, and the limiting structure is used for mounting the image receiving head.
10. The apparatus for calibrating and testing the synchronization of camera according to claim 9, wherein the mobile platform is an xyz mobile platform.
11. The apparatus according to claim 9, wherein the limiting structure comprises a connecting plate connected to a side of the moving platform close to the splitter assembly, and an optical adjustment frame fixed to the connecting plate, the optical adjustment frame being configured to hold the image receiving head.
12. The apparatus for synchronous calibration testing of a camera according to claim 11, wherein the optical adjustment frame comprises a base fixed to the connection plate, a clamping jaw movably connected to the base, and an adjusting member connected between the base and the clamping jaw, wherein the adjusting member is used for adjusting an angle between the clamping jaw and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669728.XU CN217690124U (en) | 2022-06-30 | 2022-06-30 | Camera synchronous calibration test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221669728.XU CN217690124U (en) | 2022-06-30 | 2022-06-30 | Camera synchronous calibration test equipment |
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| Publication Number | Publication Date |
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| CN217690124U true CN217690124U (en) | 2022-10-28 |
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| CN202221669728.XU Active CN217690124U (en) | 2022-06-30 | 2022-06-30 | Camera synchronous calibration test equipment |
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| CN (1) | CN217690124U (en) |
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- 2022-06-30 CN CN202221669728.XU patent/CN217690124U/en active Active
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