CN220357412U - Multi-view imaging device - Google Patents
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- CN220357412U CN220357412U CN202322003521.XU CN202322003521U CN220357412U CN 220357412 U CN220357412 U CN 220357412U CN 202322003521 U CN202322003521 U CN 202322003521U CN 220357412 U CN220357412 U CN 220357412U
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Abstract
The utility model discloses a multi-view imaging device, which comprises: the first light turning structure and the second light turning structure are used for enabling the first imaging light and the second imaging light to be converged at the same position and enabling optical paths of the first imaging light and the second imaging light from the object to be detected to the converged position to be equal; the beam combining structure is arranged at the convergence position of the imaging light, so that the first imaging light and the second imaging light are combined; and the camera is used for obtaining the combined first imaging light and the combined second imaging light so as to image the object to be measured at a first angle and a second angle. According to the utility model, the multi-angle imaging light is converged on the camera through the steering structure, and multi-angle imaging can be realized only by a single camera, so that the number of cameras used for multi-angle shooting can be reduced, and the complexity of the device is reduced.
Description
Technical Field
The utility model relates to the technical field of industrial detection, in particular to a multi-view imaging device.
Background
At present, in the industrial detection fields of semiconductor detection, display module detection and the like, detection requirements of high precision, high speed and high stability exist, and different requirements are provided for imaging devices in detection devices aiming at different detection scenes.
However, the existing photographing device can only image with a single camera and lens at a time, which results in the need of adopting multiple sets of imaging equipment when the multi-angle photographing is required, high complexity of the device and low detection efficiency.
Disclosure of Invention
Aiming at least one defect or improvement requirement of the prior art, the utility model provides a multi-view imaging device, which can collect imaging light with multiple angles on a camera through a steering structure, and can realize multi-view imaging by only a single camera, so that the number of cameras used for shooting can be reduced, and the complexity of the device is reduced.
To achieve the above object, according to a first aspect of the present utility model, there is provided a multi-view imaging apparatus comprising:
the first light turning structure and the second light turning structure are used for enabling the first imaging light and the second imaging light to be converged at the same position, and enabling optical paths of the first imaging light and the second imaging light from an object to be detected to the converged position to be equal;
the beam combining structure is arranged at the convergence position of the imaging light, so that the first imaging light and the second imaging light are combined;
a camera for obtaining the first imaging light and the second imaging light after beam combination so as to image an object to be detected at a first angle and a second angle;
the first imaging light is imaging light of the object to be detected in the first angle, the second imaging light is imaging light of the object to be detected in the second angle, and the first angle is different from the second angle.
Further, the multi-view imaging apparatus further includes:
the first light diverting structure and the second light diverting structure are planar mirrors or prisms having a total reflection function.
Further, the multi-view imaging apparatus further includes:
the first light turning structure and the second light turning structure are plane reflectors, the mirror surfaces of the plane reflectors are arranged in a facing mode, and the beam combining structure is arranged between the first light turning structure and the second light turning structure.
Further, the multi-view imaging apparatus further includes:
the beam combining structure is a 50:50 spectroscope.
Further, the multi-view imaging apparatus further includes:
the device further comprises an angle adjusting device for adjusting the angles of the first light steering structure, the second light steering structure and the beam combining structure, so that the first imaging light and the second imaging light can reach the camera along the light steering structure and the beam combining device.
Further, the multi-view imaging apparatus further includes:
further comprising a position adjustment device for adjusting the position of the first and second light redirecting structures to change the first and second angles; the position adjusting device is also used for correspondingly adjusting the position of the beam combining structure, so that the beam combining structure is positioned at the convergence position of the first imaging light and the second imaging light.
Further, the multi-view imaging apparatus further includes:
the first imaging light and the second imaging light are provided with a shading shutter on the light path, and the shading shutter is used for shading the light path so that the camera only acquires the first imaging light or the second imaging light at the same time.
Further, the multi-view imaging apparatus further includes:
the first imaging light and the second imaging light also respectively pass through band-pass filters in different wavelength ranges; the camera is a color camera.
Further, the multi-view imaging apparatus further includes:
the digital image processing module is used for receiving the images formed by the first imaging light and the second imaging light by the color camera, performing digital image processing, separating the images formed by the first imaging light and the second imaging light, and obtaining images corresponding to the first angle and the second angle according to the corresponding relation between the band-pass filter and the imaging light and the angles thereof.
Further, the multi-view imaging apparatus further includes:
the distance between the camera and the beam combination structure can be adjusted so as to meet the object distance requirement of the camera lens.
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
the multi-view imaging device provided by the utility model can reduce the number of cameras used for shooting, reduce the complexity of the device, and can improve the stability of the imaging device without correlation among multiple cameras.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a multi-view imaging device according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of still another multi-view imaging apparatus according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a multi-view imaging device according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a multi-view imaging device according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of another multi-view imaging device according to an embodiment of the present utility model.
Reference numerals illustrate:
1-a first light redirecting structure; 2-a second light redirecting structure; 3-beam combining structure; 4-camera; 5-an object to be detected; 6-a first light-shielding shutter; 7-a second light-shielding shutter; 8-a first bandpass filter; 9-a second bandpass filter.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The terms first, second, third and the like in the description and in the claims and in the above drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or device that comprises a list of steps or elements is not limited to the list of steps or elements but may, in the alternative, include other steps or elements not expressly listed or inherent to such process, method, article, or device.
As one embodiment of the present utility model, a multi-view imaging apparatus is provided. The multi-view imaging device is used for detecting the object to be detected in multiple views. In the case of multi-view detection, imaging light corresponding to a plurality of view angles is necessarily present. Therefore, when imaging light with multiple angles of view, that is, multiple imaging light, is only used by a single camera, it is necessary to set a corresponding light turning structure to turn each path of imaging light to the camera, and set a beam combining structure to combine the multiple paths of imaging light into one path for output to the camera.
As shown in fig. 1, a multi-view imaging apparatus is provided. The imaging device performs imaging detection of two visual angles on the same surface to be detected of the object to be detected. In fig. 1, a first light steering structure 1 and a second light steering structure 2 are adopted to steer the light path, and two paths of imaging light are acquired through a camera 4 to image through a beam combining structure 3. The first imaging light passing through the first light turning structure 1 and the second imaging light passing through the second light turning structure 2 are imaging light of the object under test at a first angle and a second angle, respectively, and the multi-view imaging device provided in this embodiment can acquire the first imaging light and the second imaging light by a single camera 4, so as to image the object under test at the first angle and the second angle. Generally, the first angle and the second angle are different angles.
According to the gaussian imaging formula:
wherein the method comprises the steps offAs the focal length of the lens is,uin order to be the object distance,vis a distance. In the case of a camera, in which the camera is a camera,fis the focal length of the lens of the camera,vis the distance of the camera lens from the image sensor of the camera. Thus, when single camera multi-view imaging is employed, the object distance of the multiple viewsuIt should be the same, reflecting to the multi-view imaging device that the optical path lengths of the multiple imaging light are the same.
Fig. 1 shows a multi-view imaging device, in which a planar mirror is used for both the first light diverting structure 1 and the second light diverting structure 2, and a beam splitter is used for the beam combining structure 3. In this case, the first imaging light passes through the first light diverting structure 1, the second imaging light passes through the second light diverting structure 2, then is converged at the beam combining structure 3, and then enters the camera 4 for imaging after being combined by the beam combining structure 3. By controlling the angles of the imaging light and setting the positions of the first light turning structure 1 and the second light turning structure 2, the optical paths of the two imaging lights when reaching the beam combining structure 3 can be ensured to be identical, and the imaging of the two imaging lights at the camera 4 can be ensured. In another embodiment, as shown in fig. 2, the first light turning structure 1 and the second light turning structure 2 adopt prism structures capable of total reflection, and multi-view detection of the same object to be detected can be realized. In one embodiment, the beam splitting device 3 is a 50:50 beam splitting device, so that the first imaging light and the second imaging light have the same brightness when combined and transmitted to the camera 4.
Further, the multi-view imaging apparatus further includes an angle adjusting device. The first light diverting structure 1 and the second light diverting structure 2 need to be parallel and opposite to each other in order to ensure that the camera 4 obtains the complete first imaging light and second imaging light. The adjustment can be according to the condition of taking images of the camera 4, by adjusting the angles of the first light turning structure 1 and the second light turning structure 2, when the images formed by the clear and complete first imaging light and the images formed by the clear and complete second imaging light can be obtained in the camera 4, the angles of the first light turning structure 1 and the second light turning structure 2 are described to meet the condition of multi-view imaging.
Further, the multi-view imaging apparatus further includes a position adjusting device. Fig. 3 shows another embodiment of a multi-view imaging device, on the basis of the foregoing embodiment, the first light redirecting structure 1 and the second light redirecting structure 2 are both planar mirror structures, and the mirror surfaces of the two planar mirrors are disposed opposite to each other, and the beam combining structure 3 is disposed between the first light redirecting structure 1 and the second light redirecting structure 2. The two mirror surfaces are oppositely arranged, so that the symmetry of the light path can be ensured, namely, the first angle and the second angle are symmetrical relative to the point to be measured of the object to be measured. And by adjusting the positions of the first light diverting structure 1 and the second light diverting structure 2, the magnitudes of the first angle and the second angle can be adjusted. Further, after the positions of the first light turning structure 1 and the second light turning structure 2 are changed, the position of the beam combining structure 3 needs to be changed correspondingly, so as to ensure that the beam combining structure 3 can still play a role in beam combining.
As an alternative embodiment, as shown in fig. 4, a light-shielding shutter may be provided on the optical path of each of the imaging lights, and imaging may be performed in such a manner that different light-shielding shutters are intermittently opened. For example, a first shielding shutter 6 may be provided for shielding the first imaging light, and a second shielding shutter 7 may be provided for shielding the second imaging light. In use, the first shutter 6 may be opened for a first period of time, at which time only the first imaging light will be captured by the camera 4, and the camera 4 images the first imaging light at this time, i.e. obtains an image of the object under test at a first angle. In a second period of time, the second light-shielding shutter 7 is opened, at which time only the second imaging light will be captured by the camera 4, and the camera 4 images the second imaging light at this time, i.e. obtains an image of the object to be measured at a second angle. In practical applications, imaging can be performed by controlling the response time of the camera 4 to the light. The response time of the camera 4 and the first and second time periods can be set to be several microseconds, and imaging of multiple imaging lights by a single camera can be achieved through time-sharing imaging.
Further, the light shielding shutters are in a one-to-one correspondence with the light turning structures and the imaging angles, for example, in the present embodiment, the first light shielding shutter 6 corresponds to the first light turning structure 1 and the first imaging light, and the second light shielding shutter 7 corresponds to the second light turning structure and the second imaging light, so that when the first light shielding shutter 6 is opened, the imaging result recorded by the camera 4 at this time corresponds to the first angle, and when the second light shielding shutter 7 is opened, the imaging result recorded by the camera 4 at this time corresponds to the second angle, so as to facilitate the subsequent image processing step.
As an alternative embodiment, as shown in fig. 5, imaging may be performed in such a manner that a bandpass filter is provided and image separation is performed. The wavelengths corresponding to the different bandpass filters need to be different. The bandpass filter in this embodiment employs a bandpass filter, that is, allows only light of a specific band of wavelengths to pass. For example, a first bandpass filter 8 may be provided for changing the wavelength of the first imaging light, and a second bandpass filter 9 may be provided for changing the wavelength of the second imaging light. For example, the first bandpass filter 8 may be provided as a red bandpass filter and the second bandpass filter 9 as a green bandpass filter, and the camera 4 may receive both the first imaging light of red and the second imaging light of green. The red light image and the green light image can be separated in an image separation mode, the imaging angles of the red light image and the first imaging light are corresponding, the imaging angles of the green light image and the second imaging light are corresponding one by one, and the subsequent image processing steps are convenient.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A multi-view imaging apparatus, comprising:
the first light turning structure and the second light turning structure are used for enabling the first imaging light and the second imaging light to be converged at the same position, and enabling optical paths of the first imaging light and the second imaging light from an object to be detected to the converged position to be equal;
the beam combining structure is arranged at the convergence position of the imaging light, so that the first imaging light and the second imaging light are combined;
a camera for obtaining the first imaging light and the second imaging light after beam combination so as to image an object to be detected at a first angle and a second angle;
the first imaging light is imaging light of the object to be detected in the first angle, the second imaging light is imaging light of the object to be detected in the second angle, and the first angle is different from the second angle.
2. The multi-view imaging apparatus of claim 1, wherein:
the first light diverting structure and the second light diverting structure are planar mirrors or prisms having a total reflection function.
3. The multi-view imaging apparatus of claim 2, wherein:
the first light turning structure and the second light turning structure are plane reflectors, the mirror surfaces of the plane reflectors are arranged in a facing mode, and the beam combining structure is arranged between the first light turning structure and the second light turning structure.
4. The multi-view imaging apparatus of claim 1, wherein:
the beam combining structure is a 50:50 spectroscope.
5. The multi-view imaging apparatus of claim 1, wherein:
the camera also comprises an angle adjusting device, wherein the angle adjusting device is used for adjusting the angles of the first light steering structure, the second light steering structure and the beam combining structure, so that the first imaging light and the second imaging light can reach the camera along the light steering structure and the beam combining structure.
6. The multi-view imaging apparatus of claim 1, wherein:
further comprising a position adjustment device for adjusting the position of the first and second light redirecting structures to change the first and second angles; the position adjusting device is also used for correspondingly adjusting the position of the beam combining structure, so that the beam combining structure is positioned at the convergence position of the first imaging light and the second imaging light.
7. The multi-view imaging apparatus according to any one of claims 1 to 6, wherein:
the first imaging light and the second imaging light are provided with a shading shutter on the light path, and the shading shutter is used for shading the light path so that the camera only acquires the first imaging light or the second imaging light at the same time.
8. The multi-view imaging apparatus according to any one of claims 1 to 6, wherein:
the first imaging light and the second imaging light also respectively pass through band-pass filters in different wavelength ranges; the camera is a color camera.
9. The multi-view imaging apparatus of claim 8, wherein:
the digital image processing module is used for receiving the images formed by the first imaging light and the second imaging light by the color camera, performing digital image processing, separating the images formed by the first imaging light and the second imaging light, and obtaining images corresponding to the first angle and the second angle according to the corresponding relation between the band-pass filter and the imaging light and the angles thereof.
10. The multi-view imaging apparatus of claim 1, wherein:
the distance between the camera and the beam combination structure can be adjusted so as to meet the object distance requirement of the camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322003521.XU CN220357412U (en) | 2023-07-28 | 2023-07-28 | Multi-view imaging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322003521.XU CN220357412U (en) | 2023-07-28 | 2023-07-28 | Multi-view imaging device |
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| CN220357412U true CN220357412U (en) | 2024-01-16 |
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| CN202322003521.XU Active CN220357412U (en) | 2023-07-28 | 2023-07-28 | Multi-view imaging device |
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