CN210321639U - Curved surface mirror surface three-dimensional detection device based on reflection imaging - Google Patents
Curved surface mirror surface three-dimensional detection device based on reflection imaging Download PDFInfo
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- CN210321639U CN210321639U CN201921460966.8U CN201921460966U CN210321639U CN 210321639 U CN210321639 U CN 210321639U CN 201921460966 U CN201921460966 U CN 201921460966U CN 210321639 U CN210321639 U CN 210321639U
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Abstract
The utility model discloses a three-dimensional detection device for a curved mirror surface based on reflection imaging, which comprises a working frame, wherein a sample table, an image generating device, at least two groups of image acquisition devices and a lifting device are arranged in the working frame; the image generating device and the two groups of image acquisition devices are both positioned above the sample stage; the lifting device drives the sample stage to be close to and/or far away from the image acquisition device; the image acquisition device is in signal connection with the receiving end. The utility model discloses have at least two sets of pattern collection system, have sample elevating gear simultaneously, can adjust the measurement visual field size according to the size and the surperficial steepness scope of surveyed curved surface mirror surface sample, strong adaptability, the three-dimensional profile data of gathering carry out contrast processing with standard design data and obtain three-dimensional profile error, improve the precision and the efficiency that detect mirror surface profile.
Description
Technical Field
The utility model belongs to the technical field of the mirror surface detects, especially relate to a three-dimensional detection device of curved surface mirror surface based on reflection formation of image.
Background
With the development of economic technology, people using Augmented Reality (AR for short) devices are becoming more and more widespread, so that the market of AR devices is developing vigorously. Optical free-form surfaces are generally adopted in the AR imaging system to realize imaging, and the introduction of a free-form surface reflector can simplify the structure of the AR system and reduce the weight. The surface type error of the optical free-form surface has obvious influence on the AR imaging effect, but the detection method for the surface type contour error of the optical free-form surface lens is still in a groping stage because the existing AR industry is just started.
Most methods for detecting the surface profile of the free-form surface measure the three-dimensional profile data of the free-form surface by a three-coordinate measuring instrument; the instrument has long measuring period and expensive measuring equipment, and is a contact type measuring instrument; for optical grade lenses, the measured back surface is damaged, and the product can only be discarded, so that the full inspection of the product cannot be realized at most as sampling inspection. The structured light projection optical scanner can measure the surface profile of the free-form surface in a non-contact manner, and needs to project an image onto the surface of an object to be measured, but the surface of the optical free-form surface mirror is a mirror surface, and the projected image can be reflected and cannot be received, so that the structured light projection optical scanner is not suitable for three-dimensional measurement of the optical free-form surface.
In recent years, curved mirror surface three-dimensional profile measuring devices based on the fringe reflection principle have been developed. The method comprises the steps of generating a stripe image through an image generating device, receiving the deformed stripe image by an image acquisition device after the image is reflected by a mirror surface, and reconstructing a mirror surface three-dimensional contour according to the image. The method is suitable for the rapid three-dimensional reconstruction of the free curved surface of the mirror surface. However, the existing fringe mirror surface measuring device adopts a group of image acquisition devices with fixed view field sizes, and has great limitation in practical application. In some measurement occasions, the caliber of a measured mirror surface is large, so that large measurement view field matching is needed, and a measured sample is placed far away from an image acquisition device; in some application occasions, the size of the measured mirror surface is small, but the surface gradient is large, so that only a small measurement view field is needed, and the measured sample is closer to the image acquisition device. The existing fringe mirror surface three-dimensional measuring device can not meet the requirements by adopting a structure with a fixed view field size.
SUMMERY OF THE UTILITY MODEL
The utility model provides a main technical problem who solves provides a curved surface mirror surface three-dimensional detection device based on reflection formation of image, at least two sets of pattern collection system have, sample elevating gear has simultaneously, can adjust the measurement visual field size according to the size and the surface gradient scope of being surveyed curved surface mirror surface sample, strong adaptability, can gather the three-dimensional profile of mirror surface that has certain curvature fast, the three-dimensional profile data of collection carries out contrast processing with standard design data and obtains three-dimensional profile error, can improve the precision and the efficiency of the surface profile of detection mirror surface product.
In order to solve the technical problem, the utility model discloses a technical scheme be: a three-dimensional detection device for a curved mirror surface based on reflection imaging comprises a working frame, wherein a sample table, an image generation device, at least two groups of image acquisition devices and a lifting device are arranged in the working frame;
the image generating device and the two groups of image acquisition devices are both positioned above the sample stage;
the lifting device drives the sample stage to be close to and/or far away from the image acquisition device;
the image acquisition device is in signal connection with the receiving end.
The utility model discloses a solve the further technical scheme that its technical problem adopted and be:
further, the image acquisition device comprises a first image acquisition unit and a second image acquisition unit, a central axis of an imaging direction of the first image acquisition unit and a longitudinal line of the first image acquisition unit are formed with a first included angle, a central axis of an imaging direction of the second image acquisition unit and a longitudinal line of the second image acquisition unit are formed with a second included angle, and an included angle value of the first included angle is smaller than an included angle value of the second included angle.
The first image acquisition unit comprises at least two first cameras arranged in a row, and the imaging directions of all the first cameras are consistent; the second image acquisition unit comprises at least two second cameras arranged in a row, and the imaging directions of the second cameras are consistent.
Further, a focal length of the first camera and a focal length of the second camera are different.
Further, the focal length of the first camera and the focal length of the second camera are the same.
Furthermore, the lifting device comprises a lifting platform, guide rods and a motor, wherein the guide rods are located on two sides of the lifting platform, the motor is fixed inside the working frame, an output shaft of the motor is fixed to one end of each guide rod, the guide rods are mechanically connected with the lifting platform, and the guide rods rotate to drive the lifting platform to lift.
Further, the device also comprises a horizontal displacement device, and the horizontal displacement device drives the sample platform to move back and forth and/or left and right on the same horizontal plane.
Furthermore, the horizontal displacement device is a two-axis manipulator with an X axis and a Y axis, and the sample stage is connected with the two-axis manipulator.
Further, the image generating device is a display screen for generating a stripe-shaped image.
Further, the receiving end is a computer or a mobile phone.
The utility model has the advantages that: the utility model discloses an image generation device reflects the surface of the sample that awaits measuring with the stripe, and rethread elevating gear and/or horizontal displacement device adjust the sample that awaits measuring and image acquisition device's position and angle, guarantee that image acquisition device gathers the stripe structure on the sample surface that awaits measuring at a shooting in-process, and the three-dimensional profile data of collection carries out contrast processing with standard design data and obtains three-dimensional profile error, has effectively improved the detection speed and the detection quality of the sample that awaits measuring.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a schematic structural view of the image capturing device and the working frame of the present invention;
the parts in the drawings are marked as follows:
the device comprises a working frame 1, a sample table 2, an image generating device 3, an image collecting device 4, a first image collecting unit 41, a first included angle α, a second image collecting unit 42, a second included angle β, a lifting device 5, a lifting table 51, a guide rod 52, a motor 53 and a horizontal displacement device 6.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b): a three-dimensional detection device for a curved mirror surface based on reflection imaging is disclosed, as shown in figures 1-3, and comprises a working frame 1, wherein a sample table 2, an image generation device 3, at least two groups of image acquisition devices 4 and a lifting device 5 are arranged in the working frame;
the image generating device and the two groups of image acquisition devices are both positioned above the sample stage;
the lifting device drives the sample stage to be close to and/or far away from the image acquisition device;
the image acquisition device is in signal connection with the receiving end.
The image acquisition device comprises a first image acquisition unit 41 and a second image acquisition unit 42, wherein a first included angle α is formed between the central axis of the imaging direction of the first image acquisition unit and the longitudinal line of the first image acquisition unit, a second included angle β is formed between the central axis of the imaging direction of the second image acquisition unit and the longitudinal line of the second image acquisition unit, the included angle value of the first included angle is smaller than that of the second included angle, when the surface to be detected of the sample to be detected is small, the first image acquisition unit is started, when the surface to be detected of the sample to be detected is large, the second image acquisition unit is started, and the longitudinal line of the first image acquisition unit and the longitudinal line of the second image acquisition unit are parallel to the lifting direction of the lifting device.
The first image acquisition unit comprises at least two first cameras arranged in a row, and the imaging directions of all the first cameras are consistent; the second image acquisition unit comprises at least two second cameras arranged in a row, and the imaging directions of the second cameras are consistent.
The focal length of the first camera and the focal length of the second camera are different.
The focal length of the first camera is the same as the focal length of the second camera.
The lifting device comprises a lifting platform 51, guide rods 52 and a motor 53, wherein the guide rods 52 and the motor 53 are positioned on two sides of the lifting platform, the motor is fixed inside the working frame, an output shaft of the motor is fixed with one end of each guide rod, the guide rods are mechanically connected with the lifting platform, and the guide rods rotate to drive the lifting platform to lift.
The device also comprises a horizontal displacement device 6, and the horizontal displacement device drives the sample stage to move back and forth and/or left and right on the same horizontal plane.
The horizontal displacement device is a two-axis manipulator comprising an X axis and a Y axis, the sample table is connected with the two-axis manipulator, and the two-axis manipulator is the prior art and is not described herein any more.
The image generating device is a display screen for generating a stripe-shaped image.
The receiving end is a computer or a mobile phone.
The working principle of the utility model is as follows:
the utility model discloses an image generation device reflects the surface of the sample that awaits measuring with the stripe, and rethread elevating gear and/or horizontal displacement device adjust the sample that awaits measuring and image acquisition device's position and angle, guarantee that image acquisition device gathers the stripe structure on the sample surface that awaits measuring at a shooting in-process, compare with the standard substance at last, effectively improved the detection speed and the detection quality of the sample that awaits measuring.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (10)
1. The utility model provides a three-dimensional detection device of curved surface mirror surface based on reflection formation of image which characterized in that: the device comprises a working frame, wherein a sample table, an image generating device, at least two groups of image acquisition devices and a lifting device are arranged in the working frame;
the image generating device and the two groups of image acquisition devices are both positioned above the sample stage;
the lifting device drives the sample stage to be close to and/or far away from the image acquisition device;
the image acquisition device is in signal connection with the receiving end.
2. The three-dimensional detection device for the curved mirror surface based on the reflection imaging as claimed in claim 1, wherein: the image acquisition device comprises a first image acquisition unit and a second image acquisition unit, wherein a central axis of an imaging direction of the first image acquisition unit and a longitudinal line of the first image acquisition unit are formed with a first included angle, a central axis of an imaging direction of the second image acquisition unit and a longitudinal line of the second image acquisition unit are formed with a second included angle, and the included angle value of the first included angle is smaller than that of the second included angle.
3. The apparatus according to claim 2, wherein the apparatus comprises: the first image acquisition unit comprises at least two first cameras arranged in a row, and the imaging directions of all the first cameras are consistent; the second image acquisition unit comprises at least two second cameras arranged in a row, and the imaging directions of the second cameras are consistent.
4. The device for three-dimensional detection of the curved mirror surface based on the reflection imaging as claimed in claim 3, wherein: the focal length of the first camera and the focal length of the second camera are different.
5. The device for three-dimensional detection of the curved mirror surface based on the reflection imaging as claimed in claim 3, wherein: the focal length of the first camera is the same as the focal length of the second camera.
6. The three-dimensional detection device for the curved mirror surface based on the reflection imaging as claimed in claim 1, wherein: the lifting device comprises a lifting platform, guide rods and a motor, wherein the guide rods are located on two sides of the lifting platform, the motor is fixed inside the working frame, an output shaft of the motor is fixed to one end of each guide rod, the guide rods are mechanically connected with the lifting platform, and the guide rods rotate to drive the lifting platform to lift.
7. The three-dimensional detection device for the curved mirror surface based on the reflection imaging as claimed in claim 1, wherein: the device also comprises a horizontal displacement device, and the horizontal displacement device drives the sample platform to move back and forth and/or left and right on the same horizontal plane.
8. The apparatus according to claim 7, wherein the apparatus comprises: the horizontal displacement device is a two-axis manipulator comprising an X axis and a Y axis, and the sample platform is connected with the two-axis manipulator.
9. The three-dimensional detection device for the curved mirror surface based on the reflection imaging as claimed in claim 1, wherein: the image generating device is a display screen for generating a stripe-shaped image.
10. The three-dimensional detection device for the curved mirror surface based on the reflection imaging as claimed in claim 1, wherein: the receiving end is a computer or a mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460966.8U CN210321639U (en) | 2019-09-04 | 2019-09-04 | Curved surface mirror surface three-dimensional detection device based on reflection imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460966.8U CN210321639U (en) | 2019-09-04 | 2019-09-04 | Curved surface mirror surface three-dimensional detection device based on reflection imaging |
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| Publication Number | Publication Date |
|---|---|
| CN210321639U true CN210321639U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921460966.8U Active CN210321639U (en) | 2019-09-04 | 2019-09-04 | Curved surface mirror surface three-dimensional detection device based on reflection imaging |
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| CN (1) | CN210321639U (en) |
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2019
- 2019-09-04 CN CN201921460966.8U patent/CN210321639U/en active Active
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