CN212646046U - System for aligning optical center of lens with center of photosurface of imaging sensor - Google Patents
System for aligning optical center of lens with center of photosurface of imaging sensor Download PDFInfo
- Publication number
- CN212646046U CN212646046U CN202021611290.0U CN202021611290U CN212646046U CN 212646046 U CN212646046 U CN 212646046U CN 202021611290 U CN202021611290 U CN 202021611290U CN 212646046 U CN212646046 U CN 212646046U
- Authority
- CN
- China
- Prior art keywords
- imaging sensor
- imaging
- center
- detection line
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A system for aligning the optical center of a lens with the center of a photosurface of an imaging sensor, comprising: the device comprises a measured object adjusting device, a linear detecting line adjusting device and a control device, wherein the measured object adjusting device is used for bearing and fixing a measured object and adjusting the measured object until the imaging of the linear detecting line is not bent, the measured object comprises two linear detecting lines with a non-zero included angle, and the linear detecting lines are parallel to the X direction or the Y direction; the imaging sensor adjusting device is used for fixing the imaging sensor and adjusting the imaging sensor until the imaging of the linear detection line passes through the center of the photosensitive surface; the lens adjusting device is used for fixing the lens; wherein the XY plane is parallel to the photosurface. The utility model discloses a to the detection of two straight line detection lines, realize the alignment at camera lens optical center and imaging sensor photosurface center, easy operation is quick, can show promotion assembly efficiency and imaging quality.
Description
Technical Field
The utility model relates to an imaging technology field especially relates to a camera lens optical center aligns system with imaging sensor photosurface center.
Background
The lens module (e.g. endoscope) is an imaging functional core component, and includes a lens and an imaging sensor (e.g. CMOS or CCD, hereinafter CMOS is taken as an example). The light is sensed on the CMOS through the lens, and the optical signal is converted into an electric signal and finally output as image information. Ensuring that the optical center of the lens coincides with the center of the photosurface during assembly is particularly important for edge uniformity and image quality of the image.
The reason why the lens module assembled manually at present is difficult to ensure that the two are completely concentric is that the size of the imaging surface of the lens is often larger than that of the photosensitive surface in order to ensure that the edge of the imaging surface does not have a shadow, and the optical center of the lens and the center of the CMOS photosensitive surface are slightly eccentric, so that the difference cannot be distinguished by naked eyes in imaging. Unless the resolution around the lens is tested by a resolution board, whether the lens is eccentric or not and the eccentric position are judged by looking at the consistency. However, this method is too complicated and cumbersome to operate, and is disadvantageous in terms of assembly efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can promote assembly efficiency and imaging quality's camera lens optical center and imaging sensor photosurface center alignment system.
The utility model provides a camera lens optical center aligns system with imaging sensor photosurface center, include:
the device comprises a measured object adjusting device and a control device, wherein the measured object adjusting device is used for bearing and fixing a measured object, the measured object comprises two linear detection lines with a non-zero included angle, the linear detection lines are parallel to the X direction or the Y direction, and when the imaging of the linear detection lines is bent, the measured object adjusting device adjusts the measured object until the imaging of the linear detection lines is not bent;
the imaging sensor adjusting device is used for fixing the imaging sensor, and when the imaging of the linear detection line does not pass through the center of the photosensitive surface, the imaging sensor adjusting device adjusts the imaging sensor until the imaging of the linear detection line passes through the center of the photosensitive surface;
the lens adjusting device is used for fixing the lens;
wherein the XY plane is parallel to the photosurface.
Furthermore, the device for adjusting the object to be measured comprises an object stage, an object stage X-direction adjusting structure and an object stage Y-direction adjusting structure, wherein the object stage is connected with the object stage, the object stage is a rotary table with rotating and fixing functions and used for bearing and fixing the object to be measured and enabling the linear detection line to rotate by a certain angle, and the object stage X-direction adjusting structure and the object stage Y-direction adjusting structure are respectively used for driving the object stage to drive the object to be measured to move along the X direction and the Y direction.
Further, the stage can rotate the linear detection line by 90 degrees.
Further, imaging sensor adjusting device includes imaging sensor fixed knot construct, with imaging sensor X direction adjustment structure and imaging sensor Y direction adjustment structure that imaging sensor fixed knot construct and connect, the sensor fixed knot construct and be used for fixed imaging sensor, imaging sensor X direction adjustment structure and imaging sensor Y direction adjustment structure are used for the drive respectively imaging sensor fixed knot construct drives imaging sensor removes along X direction and Y direction.
Furthermore, the imaging sensor adjusting device further comprises an imaging sensor Z-direction adjusting structure connected with the imaging sensor fixing structure and used for driving the imaging sensor fixing structure to drive the imaging sensor to move along the Z direction, and the Z direction is perpendicular to the XY plane.
The system further comprises a processing device, wherein the processing device is electrically connected with the measured object adjusting device, the imaging sensor adjusting device and the lens adjusting device and is used for judging whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line passes through the center of the photosensitive surface or not.
Further, when the imaging of the straight detection line is bent, the measured object adjusting device adjusts the measured object according to a first adjusting signal sent by the processing device; and when the image of the linear detection line does not pass through the center of the photosensitive surface, the imaging sensor adjusting device adjusts the imaging sensor according to a second adjusting signal sent by the processing device.
Further, the system further comprises: the processing device is used for judging whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line passes through the center of the photosensitive surface or not, and the display device is used for displaying the imaging of the linear detection line and judging whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line is positioned in the center of a display area or not; when the imaging of the linear detection line is bent, an operator adjusts the measured object adjusting device according to a first adjusting signal sent by the processing device, and when the imaging of the linear detection line does not pass through the center of the photosensitive surface, the operator adjusts the imaging sensor adjusting device according to a second adjusting signal sent by the processing device.
Further, the first adjustment signal includes an adjustment direction and an angle of the device for adjusting the object to be measured, and the second adjustment signal includes an adjustment direction and an angle of the device for adjusting the imaging sensor.
Further, the system further comprises a display device, wherein the display device is electrically connected with the imaging sensor and used for displaying the imaging of the linear detection line and judging whether the imaging of the linear detection line is bent or not and is positioned in the center of a display area.
The utility model provides a camera lens optical center aligns system with imaging sensor photosurface center can realize the alignment at camera lens optical center and imaging sensor photosurface center through the detection to two sharp detection lines, and easy operation is quick, can show promotion assembly efficiency and imaging quality.
Drawings
Fig. 1 is a schematic diagram of imaging distortion according to an embodiment of the present invention.
Fig. 2 is a schematic layout diagram of the object to be measured, the imaging sensor, and the lens in the operation method of the system for aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor according to the embodiment of the present invention.
FIG. 3 is a schematic illustration of imaging bending of a first detection line in the method of FIG. 2.
FIG. 4 is a schematic illustration of the method of FIG. 3 in which the first inspection line is imaged without bending but without passing through the center of the photosurface.
FIG. 5 is a schematic view of the method of FIG. 3 where the first inspection line is imaged without bending and passing through the center of the photosurface.
FIG. 6 is a schematic illustration of imaging a bend in a second detection line in the method of FIG. 2.
FIG. 7 is a schematic illustration of the second inspection line image formed in the method of FIG. 6 without bending but without passing through the center of the photosurface.
FIG. 8 is a schematic view of the second inspection line image formed in the method of FIG. 6 passing through the center of the photosurface without bending.
Fig. 9 is a schematic diagram of a system for aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The lens distortion is caused by the fact that the lens has different magnification factors for different fields of view, the definition of an image cannot be directly influenced, and image deformation can be caused. In the imaging process, the optical lens causes barrel distortion (distortion) of the image, as shown in fig. 1 (other lenses are similar, and this embodiment is exemplified by an endoscope lens). For the distortion of endoscopic imaging, it can be seen that the imaging of a straight line that does not pass through the optical center is curved, and deformation occurs; and the straight line after the straight line imaging of the optical center is still a straight line, and no deformation occurs. The embodiment realizes the alignment of the optical center of the lens and the center of the photosensitive surface of the imaging sensor according to the characteristic of lens distortion. The specific description is as follows.
In this embodiment, an operation method of a system for aligning an optical center of a lens with a center of a photosensitive surface of an imaging sensor (hereinafter referred to as a photosensitive surface) includes: placing a measured object, wherein the lens is positioned between the measured object and the imaging sensor, and the measured object is parallel to the photosensitive surface and is provided with two linear detection lines with a non-zero included angle; imaging a measurand comprising: judging whether the imaging of the two linear detection lines is bent or not, if so, adjusting the object to be measured until the imaging of the linear detection lines is not bent; and judging whether the imaging of the two linear detection lines passes through the center of the photosensitive surface, if not, adjusting the imaging sensor until the imaging of the linear detection lines passes through the center of the photosensitive surface. After the images of the two detection lines are not bent and pass through the center of the photosensitive surface, the alignment of the optical center of the lens and the center of the photosensitive surface of the imaging sensor is realized.
Specifically, the operation method of the system for aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor in the present embodiment includes the following steps S1-S5.
In step S1, as shown in fig. 2, an XYZ three-axis coordinate system is established with the optical center of the lens 2 as the origin of coordinates, wherein the XY plane is parallel to the photosensitive surface. An object 1 to be measured with a straight line feature is placed in front of the lens 2, and in this embodiment, the object 1 to be measured is a straight ruler (or other straight rod-shaped object), and the whole shape of the object 1 forms the straight line feature. In other embodiments, the object 1 may have other shapes as long as it has straight features, such as a straight line and a straight edge carved on a flat plate. The imaging sensor 3 is electrically connected to a display device (not shown), the display device forms a display area 5 on the screen corresponding to the imaging sensor 3, and the object 1 to be measured can be imaged in the display device and displayed in the display area 5. Corresponding to the three-axis coordinate system in fig. 2, the vertical direction in fig. 3 to 8 corresponds to the X-axis direction, and the horizontal direction corresponds to the Y-axis direction.
Step S2, enabling the straight line characteristic of the object to be measured 1 to be parallel to the X-axis direction to form a first detection line; imaging the object to be measured 1 (the imaging of the object to be measured 1 in fig. 3 to 8 is denoted by 4), determining whether the imaging 4 of the first detection line is bent, and if the imaging 4 of the first detection line is not bent (as in fig. 4), performing step S3; if the image 4 of the first detection line is curved (see fig. 3), the object 1 to be measured is adjusted in a direction parallel to the Y-axis until the image 4 of the first detection line is not curved (see fig. 4).
Step S3, determining whether the image 4 of the first detection line passes through the center of the photosensitive surface, if the image 4 of the first detection line passes through the center of the photosensitive surface, that is, the image 4 on the screen in the direction parallel to the Y axis is located at the center of the display area 5 (as shown in fig. 5), it indicates that the optical center of the lens is aligned with the center of the photosensitive surface of the imaging sensor in the direction parallel to the Y axis; if the image 4 of the first inspection line does not pass through the center of the photosensitive surface, i.e. the image 4 on the screen in the direction parallel to the Y axis is not located at the center of the display area 5 (see fig. 4), the imaging sensor 3 is adjusted in the direction parallel to the Y axis until the image 4 of the first inspection line passes through the center of the photosensitive surface (located at the center of the display area 5 in the direction parallel to the Y axis) to achieve alignment of the lens optical center with the center of the photosensitive surface of the imaging sensor in the direction parallel to the Y axis.
In the above steps S2 and S3, the first detection line parallel to the X-axis direction is imaged, whether the image is curved or passes through the center of the photosensitive surface is determined, and the object to be measured 1 and the imaging sensor 3 are adjusted correspondingly along the Y-axis direction until the image of the first detection line is a straight line (without deformation) and is located at the center of the display area 5. At this time, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are concentric in the Y-axis direction, that is, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are aligned in the Y-axis direction.
Step S4, rotating the object to be measured 1 to make the straight line characteristic parallel to the Y-axis direction to form a second detection line; imaging the object 1 to be measured, determining whether the imaging 4 of the second detection line is bent, and if the imaging 4 of the second detection line is not bent (see fig. 7), performing step S5; if the image 4 of the second detection line is curved (see fig. 6), the object 1 to be measured is adjusted in a direction parallel to the X-axis until the image 4 of the second detection line is not curved (see fig. 7).
Step S5, determining whether the image 4 of the second detection line passes through the center of the photosensitive surface, if the image 4 of the second detection line passes through the center of the photosensitive surface, that is, the image 4 on the screen in the direction parallel to the X axis is located at the center of the display area 5 (as shown in fig. 8), it indicates that the optical center of the lens is aligned with the center of the photosensitive surface of the imaging sensor in the direction parallel to the X axis; if the image 4 of the second inspection line does not pass through the center of the photosensitive surface, i.e. the image 4 on the screen in the direction parallel to the X-axis is not located at the center of the display area 5 (see fig. 7), the imaging sensor 3 is adjusted in the direction parallel to the X-axis until the image 4 of the second inspection line passes through the center of the photosensitive surface (located at the center of the display area 5 in the direction parallel to the X-axis) to achieve the alignment of the lens optical center and the center of the photosensitive surface of the imaging sensor in the direction parallel to the X-axis.
In the above steps S4 and S5, the second detection line parallel to the Y axis is imaged, whether the image is curved or passes through the center of the photosensitive surface is determined, and the object to be measured 1 and the imaging sensor 3 are adjusted correspondingly along the X axis until the image of the second detection line is a straight line (without deformation) and is located at the center of the display area 5. At this time, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are concentric in the X-axis direction, that is, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are aligned in the X-axis direction.
Through the steps of S1 to S5, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are concentric on the XY plane, that is, the optical center of the lens and the center of the photosensitive surface of the imaging sensor are aligned on the XY plane.
In this embodiment, the first detection line and the second detection line are formed by rotating a measured object 1 with a straight line characteristic by a certain angle. Of course, in other embodiments, one object to be measured 1 itself may have two linear features (e.g. two side edges of one object) with a certain angle (non-zero included angle), and the two linear features are used as the first detection line and the second detection line for detection. Two measured objects 1 with linear characteristics can also be adopted, and the linear characteristics of the two measured objects 1 are respectively used as a first detection line and a second detection line. In a word, the detected object only needs to contain a plane parallel to the photosensitive surface and has two linear detection lines with a non-zero included angle, and the specific implementation mode can be adjusted according to the actual situation.
In this embodiment, an included angle between the first detection line and the second detection line is 90 degrees, and is parallel to the X-axis direction and the Y-axis direction, respectively. The imaging of this kind of scheme is easily observed, but the contained angle is not limited to 90 degrees, and when first detection line and second detection line are other nonzero contained angles, all can make camera lens optical center and photosurface center align through detecting.
In this embodiment, the first detection line of the object to be measured 1 is imaged, the object to be measured 1 and the imaging sensor 3 are adjusted so that the image of the first detection line does not bend (does not deform) and passes through the center of the photosurface, then the second detection line is imaged, and the object to be measured 1 and the imaging sensor 3 are adjusted so that the image of the second detection line does not bend (does not deform) and passes through the center of the photosurface. The alignment of the optical center of the lens and the center of the photosensitive surface is realized by respectively detecting the first detection line and the second detection line twice. Of course, in other embodiments, the detection may be performed by one detection, that is, the detection and the corresponding adjustment are performed on the first detection line and the second detection line at the same time. For example, if one object to be measured 1 itself has two linear features with a certain angle (non-zero included angle), it can be detected whether the detection line formed by the two linear features is bent and passes through the center of the photosensitive surface. The two detections are not limited to the scheme of this embodiment, and may also be performed by first detecting whether the first detection line is bent, then detecting whether the second detection line is bent, then detecting whether the first detection line passes through the center of the photosensitive surface, and finally detecting whether the second detection line passes through the center of the photosensitive surface, for example, in the case of using two detected objects.
In this embodiment, whether the imaging of the detection line passes through the center of the photosensitive surface is judged by imaging the detection line on the screen, and by the aid of the intelligent device, whether the imaging 4 of the detection line on the screen passes through the center of the display area 5 is judged, and whether the imaging 4 of the detection line on the screen is bent is judged by the intelligent device. Of course, in other embodiments, the image may not be formed on the screen, but the image sensor 3 is electrically connected through a processing device (e.g., a computer or other intelligent device), and the processing device directly determines whether the image of the linear feature is curved and passes through the center of the photosensitive surface.
As shown in fig. 9, the present embodiment further provides a system for aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor, so as to implement the above method. The system comprises a measured object adjusting device, an imaging sensor adjusting device, a lens adjusting device, a processing device or/and a display device. The device for adjusting the object to be measured is used for bearing and fixing the object to be measured, the object to be measured comprises two linear detection lines with a non-zero included angle, the linear detection lines are parallel to the X direction or the Y direction, and the object to be measured can be controlled to move along the X direction or the Y direction. The imaging sensor adjusting device is used for fixing the imaging sensor and controlling the imaging sensor to move along the X direction or the Y direction. The lens adjusting device is used for fixing the lens and controlling the lens to move along the X direction or the Y direction. At least one of the imaging sensor adjusting device and the lens adjusting device can control the imaging sensor to move along the Z direction (both can move along the Z direction in the embodiment) so as to assemble the lens and the imaging sensor together after the optical center of the lens is aligned with the center of the sensor, and the imaging quality can be improved by adjusting the distance between the lens and the imaging sensor. The processing device is used for connecting the imaging sensor and judging whether the imaging of the linear detection line is bent or not and whether the imaging passes through the center of the photosensitive surface or not. The display device is used for connecting the imaging sensor and displaying the imaging of the linear detection line of the measured object. The Z direction is perpendicular to the XY plane, the XY plane is parallel to the light sensing surface, and the Z direction is perpendicular to the light sensing surface.
The processing device and the display device can be arranged by one or both of them. The display device can image the straight line detection line on the screen, and judges whether the image of the straight line detection line on the screen passes through the center of the display area 5 by the aid of the intelligent equipment. The processing device (such as a computer and other intelligent equipment) can directly judge whether the imaging of the linear detection line is bent or not and whether the imaging passes through the center of the photosensitive surface or not.
As shown in fig. 9, in the present embodiment, the measurement target adjusting apparatus includes a stage 11, a stage X-direction adjusting structure 12, and a stage Y-direction adjusting structure 13. The objective table 11 is used for bearing and fixing the object 40 to be measured, and the linear detection line of the object 40 to be measured is respectively parallel to the X direction or the Y direction, and the objective table X direction adjusting structure 12 and the objective table Y direction adjusting structure 13 are connected to the objective table 11 and can respectively drive the objective table 11 to drive the object 40 to be measured to move along the X direction and the Y direction.
The imaging sensor adjusting device includes an imaging sensor fixing structure 21, an imaging sensor X-direction adjusting structure 22, an imaging sensor Y-direction adjusting structure (not shown), and an imaging sensor Z-direction adjusting structure 24. The imaging sensor fixing structure 21 is used for fixing an imaging sensor (not shown), and the imaging sensor X-direction adjusting structure 22, the imaging sensor Y-direction adjusting structure, and the imaging sensor Z-direction adjusting structure 24 are connected to the imaging sensor fixing structure 21, and can respectively drive the imaging sensor fixing structure 21 to drive the imaging sensor to move along the corresponding X-direction, Y-direction, or Z-direction.
The lens adjusting device includes a lens holding structure 31, a lens X-direction adjusting structure 32, a lens Y-direction adjusting structure 33, and a lens Z-direction adjusting structure 34. The lens holding structure 31 is used for holding and fixing a lens (not shown), and the lens X-direction adjusting structure 32, the lens Y-direction adjusting structure 33, and the lens Z-direction adjusting structure 34 are connected to the lens holding structure 31 and can respectively drive the lens holding structure 31 to drive the lens to move along the corresponding X-direction, Y-direction, or Z-direction.
In operation, the object 40 is placed on the stage 11, and the linear detection line is parallel to the X direction (see fig. 9). And detecting whether the imaging is bent or not, if the imaging is bent, adjusting the position of the measured object 40 in the Y direction through the objective table Y direction adjusting structure 13 until the imaging is not bent any more, otherwise, adjusting the measured object 40 is not needed. And detecting whether the image passes through the center of the photosensitive surface, if the image passes through the center of the photosensitive surface, indicating that the optical center of the lens is aligned with the center of the photosensitive surface of the imaging sensor in the X direction, otherwise, adjusting the position of the imaging sensor in the Y direction through the Y-direction adjusting structure of the imaging sensor until the image passes through the center of the photosensitive surface, and aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor. The object 40 may then be rotated manually or otherwise to align its linear detection line parallel to the Y direction in a manner similar to that described above to align the lens optical center with the center of the imaging sensor's photosurface in the X direction. Finally, the lens and the imaging sensor can be assembled together by the lens Z-direction adjustment structure 34 or/and the imaging sensor Z-direction adjustment structure 24.
In this embodiment, the object adjusting device, the imaging sensor adjusting device and the lens adjusting device are electrically connected to a processing device. The imaging sensor sends the imaging of the linear detection line to the processing device, and the processing device judges whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line passes through the center of the photosensitive surface or not. When the image of the straight detection line is bent, the processing device sends a first adjustment signal to the object-to-be-measured adjustment device, and the object-to-be-measured adjustment device adjusts the object-to-be-measured 40 according to the first adjustment signal. Specifically, when the linear detection line is parallel to the X direction and the image of the linear detection line is bent, the processing device sends a first adjustment signal to the stage Y direction adjustment structure 13 to adjust the position of the object 40 to be measured in the Y direction until the image is no longer bent; when the linear detection line is parallel to the Y direction and the image of the linear detection line is bent, the processing device sends a first adjustment signal to the X-direction adjustment structure 12 of the stage to adjust the position of the object 40 in the X direction until the image is no longer bent. When the image of the linear detection line does not pass through the center of the photosensitive surface, the processing device sends a second adjusting signal to the imaging sensor adjusting device, and the imaging sensor adjusting device adjusts the position of the imaging sensor according to the second adjusting signal. Specifically, when the linear detection line is parallel to the X direction and the image of the linear detection line does not pass through the center of the photosensitive surface, the processing device sends a second adjustment signal to the Y-direction adjustment structure of the imaging sensor to adjust the position of the imaging sensor in the Y direction until the image passes through the center of the photosensitive surface; when the linear detection line is parallel to the Y direction and the image of the linear detection line does not pass through the center of the photosensitive surface, the processing device sends a second adjustment signal to the X-direction adjustment structure 22 of the imaging sensor to adjust the position of the imaging sensor in the X direction until the image passes through the center of the photosensitive surface. After the adjustment is completed, the processing device sends an assembly signal to the lens Z-direction adjustment structure 34 or/and the imaging sensor Z-direction adjustment structure 24 to complete the assembly of the lens and the imaging sensor.
In one embodiment, the stage 11 may be a rotary table with rotation and fixing functions, and the object 40 is usually placed on the fixed rotary table, and when the position of the linear detection line needs to be adjusted, the rotary table can receive a rotation signal of the processing device to realize rotation at a certain angle.
In this embodiment, the first adjustment signal includes parameters such as an adjustment direction and an angle of the object adjustment device, and the object adjustment device adjusts according to the first adjustment signal so that the image of the linear detection line is not bent. The second adjusting signal comprises parameters such as adjusting direction and angle of the imaging sensor adjusting device, and the imaging sensor adjusting device adjusts according to the second adjusting signal, so that imaging of the linear detection line can pass through the center of the photosensitive surface.
In other embodiments, the imaging sensor is electrically connected to the processing device and the display device. The imaging sensor sends the imaging of the linear detection line to the processing device, and the processing device judges whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line passes through the center of the photosensitive surface or not. When the imaging of the linear detection line is bent, the processing device generates the first adjusting signal and sends the first adjusting signal to the display device, and an operator adjusts the measured object adjusting device according to the first adjusting signal. When the image of the linear detection line passes through the center of the photosensitive surface, the processing device generates a second adjusting signal and sends the second adjusting signal to the display device, and an operator adjusts the imaging sensor adjusting device according to the second adjusting signal. In this case, scales may be formed on the adjustment structures of the object adjustment device and the imaging sensor adjustment device, so that an operator can perform an operation conveniently.
In this embodiment, the system for aligning the optical center of the lens with the center of the photosensitive surface of the imaging sensor aligns the optical center of the lens with the center of the photosensitive surface of the imaging sensor by detecting the two linear detection lines. The scheme is simple and quick to operate, the assembling efficiency can be obviously improved, the center alignment is accurate, and the imaging quality of the lens module can be obviously improved.
In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A system for aligning the optical center of a lens with the center of a photosurface of an imaging sensor, comprising:
the device comprises a measured object adjusting device and a control device, wherein the measured object adjusting device is used for bearing and fixing a measured object, the measured object comprises two linear detection lines with a non-zero included angle, the linear detection lines are parallel to the X direction or the Y direction, and when the imaging of the linear detection lines is bent, the measured object adjusting device adjusts the measured object until the imaging of the linear detection lines is not bent;
the imaging sensor adjusting device is used for fixing the imaging sensor, and when the imaging of the linear detection line does not pass through the center of the photosensitive surface, the imaging sensor adjusting device adjusts the imaging sensor until the imaging of the linear detection line passes through the center of the photosensitive surface;
the lens adjusting device is used for fixing the lens;
wherein the XY plane is parallel to the photosurface.
2. The system of claim 1, wherein the device for adjusting the object to be measured comprises a stage, a stage X-direction adjusting structure and a stage Y-direction adjusting structure connected to the stage, the stage is a rotary table with rotating and fixing functions for supporting and fixing the object to be measured and enabling the linear detection line to rotate by a certain angle, and the stage X-direction adjusting structure and the stage Y-direction adjusting structure are respectively used for driving the stage to drive the object to be measured to move in X-direction and Y-direction.
3. The system of claim 2, wherein the stage is capable of rotating the linear detection line by 90 degrees.
4. The system of claim 1, wherein the imaging sensor adjustment device comprises an imaging sensor fixing structure, an imaging sensor X-direction adjustment structure and an imaging sensor Y-direction adjustment structure connected to the imaging sensor fixing structure, the sensor fixing structure is used for fixing the imaging sensor, and the imaging sensor X-direction adjustment structure and the imaging sensor Y-direction adjustment structure are respectively used for driving the imaging sensor fixing structure to drive the imaging sensor to move along the X-direction and the Y-direction.
5. The system of claim 4, wherein the imaging sensor adjustment mechanism further comprises an imaging sensor Z-direction adjustment structure coupled to the imaging sensor mount structure for driving the imaging sensor mount structure to move the imaging sensor in a Z-direction, the Z-direction being perpendicular to the XY plane.
6. The system of claim 1, further comprising a processing device electrically connected to the object adjusting device, the image sensor adjusting device and the lens adjusting device for determining whether the image of the linear inspection line is curved and passes through the center of the photosensitive surface.
7. The system of claim 6, wherein the object-under-test adjusting means adjusts the object-under-test according to a first adjustment signal sent by the processing means when the imaging of the straight detection line is curved; and when the image of the linear detection line does not pass through the center of the photosensitive surface, the imaging sensor adjusting device adjusts the imaging sensor according to a second adjusting signal sent by the processing device.
8. The system of claim 1, wherein the system further comprises: the processing device is used for judging whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line passes through the center of the photosensitive surface or not, and the display device is used for displaying the imaging of the linear detection line and judging whether the imaging of the linear detection line is bent or not and whether the imaging of the linear detection line is positioned in the center of a display area or not; when the imaging of the linear detection line is bent, an operator adjusts the measured object adjusting device according to a first adjusting signal sent by the processing device, and when the imaging of the linear detection line does not pass through the center of the photosensitive surface, the operator adjusts the imaging sensor adjusting device according to a second adjusting signal sent by the processing device.
9. The system of claim 7 or 8, wherein the first adjustment signal comprises an adjustment direction and angle of the object adjustment device, and the second adjustment signal comprises an adjustment direction and angle of the imaging sensor adjustment device.
10. The system of claim 1, further comprising a display device electrically connected to the imaging sensor for displaying the image of the linear sensing line and determining whether the image of the linear sensing line is curved and centered in a display area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021611290.0U CN212646046U (en) | 2020-08-05 | 2020-08-05 | System for aligning optical center of lens with center of photosurface of imaging sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021611290.0U CN212646046U (en) | 2020-08-05 | 2020-08-05 | System for aligning optical center of lens with center of photosurface of imaging sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212646046U true CN212646046U (en) | 2021-03-02 |
Family
ID=74787626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021611290.0U Active CN212646046U (en) | 2020-08-05 | 2020-08-05 | System for aligning optical center of lens with center of photosurface of imaging sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212646046U (en) |
-
2020
- 2020-08-05 CN CN202021611290.0U patent/CN212646046U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8233041B2 (en) | Image processing device and image processing method for performing three dimensional measurements | |
| JP5997989B2 (en) | Image measuring apparatus, control method thereof, and program for image measuring apparatus | |
| CN108645345A (en) | The system that pin is inserted into object | |
| CN112505663B (en) | Calibration method for multi-line laser radar and camera combined calibration | |
| CN110470247B (en) | Device and method for detecting coaxiality of inner and outer circular surfaces of part | |
| CN111947896A (en) | System and method for aligning optical center of lens with center of photosensitive surface of imaging sensor | |
| CN212646046U (en) | System for aligning optical center of lens with center of photosurface of imaging sensor | |
| CN110470250B (en) | Detection device and detection method for surface flatness of part | |
| CN112819902A (en) | Method and device for calibrating consistency of axis of boresight | |
| WO2021007944A1 (en) | Method for calibrating bracket of 3d structured light module, apparatus, and device | |
| JP2010190668A (en) | Method of optical inspection and optical inspection device | |
| JP2005274272A (en) | Calibration method in line sensor camera, and visual examination apparatus | |
| CN113359382B (en) | Device suitable for testing camera lenses with different field angles, adjusting method and testing method | |
| CN112964639B (en) | LCM detection method and equipment | |
| CN110441331B (en) | Glass optical distortion detection system and method | |
| KR20100034039A (en) | Micro-dimension measuring method and measuring device | |
| JP5120233B2 (en) | Imaging module inspection apparatus, imaging module inspection method, and electronic device module manufacturing method | |
| CN210487642U (en) | Glass optical distortion detection system | |
| WO2019047005A1 (en) | Alignment device and testing apparatus | |
| CN100529744C (en) | Optical detection device and detection method | |
| JP6885762B2 (en) | Lens meter | |
| JP4401126B2 (en) | Method for registering predetermined part of dimension measuring device | |
| CN216898784U (en) | High-speed double-camera three-dimensional detection system | |
| CN111707446A (en) | Method and system for adjusting alignment of light spot center and detector receiving surface center | |
| CN114666578B (en) | Electronic endoscope system calibration device and calibration method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |