CN213301119U - High-precision three-dimensional scanning system - Google Patents
High-precision three-dimensional scanning system Download PDFInfo
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- CN213301119U CN213301119U CN202022627304.4U CN202022627304U CN213301119U CN 213301119 U CN213301119 U CN 213301119U CN 202022627304 U CN202022627304 U CN 202022627304U CN 213301119 U CN213301119 U CN 213301119U
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- 239000013307 optical fiber Substances 0.000 claims abstract description 24
- 230000004075 alteration Effects 0.000 claims abstract description 22
- 238000001228 spectrum Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000012634 optical imaging Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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Abstract
The utility model relates to a high accuracy three-dimensional scanning system, include XY moving platform and be located measured object on the XY moving platform, the place ahead of measured object is provided with the big colour difference optical system who is located on the Z axle moving platform, the place ahead of big colour difference optical imaging system is provided with the illumination optic fibre that is used for the light of leading-in light source and gathers the scanning optic fibre of measured object reverberation, scanning optic fibre is connected with the optical fiber spectrum appearance, the optical fiber spectrum appearance scans object reverberation and judges its spectrum to transmit to image processor. The design of the large-aperture and large-chromatic-aberration lens is adopted, high-precision three-dimensional scanning of an object is realized, the precision can reach the um level, and meanwhile, the lens is matched with light with different chromatic aberrations to judge the Z-axis position through the movement in the Z-axis direction, so that the calculation complexity of an image processor is reduced, and a certain scanning speed can be ensured.
Description
Technical Field
The utility model relates to a three-dimensional scanning device field specifically is a high accuracy three-dimensional scanning system.
Background
In order to realize the three-dimensional scanning function, a system adopting a multi-lens imaging method is developed in the prior art, for example, chinese utility model patent CN206674126U discloses a distributed multi-lens luminosity stereo camera device, which comprises an image processing module, a light source driving module and a first point light source for emitting light of a first wavelength to irradiate a target object; a second point light source for emitting light of a second wavelength to the target object; a third point light source for emitting light of a third wavelength to illuminate the target object; the first lens module is used for collecting the first wave band light reflected by the target object; a second lens module for collecting the first and second wavelengths of light reflected by the target object; a third lens module for collecting light of the second and third wavelengths reflected by the target object; and the fourth lens module is used for acquiring the first and third wavelengths of light reflected by the target object.
The method can realize the collection of a plurality of images containing different light and shade information in one-time shooting, and complete three-dimensional scanning and reconstruction based on photometric stereo, but in the scanning process, a plurality of frames of image information of the same target under the irradiation of a plurality of or different light sources are still required to be collected at a plurality of time points respectively for three-dimensional reconstruction, and the three-dimensional reconstruction of the moving target or the target with the surface in flexible change is difficult to be carried out; more importantly, the numerical apertures of the multiple lenses are small, so that high-precision three-dimensional scanning is difficult to achieve through mutual matching.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high accuracy three-dimensional scanning system is provided to solve the defect that exists among the prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a high-precision three-dimensional scanning system comprises an XY moving platform and a measured object positioned on the XY moving platform, wherein a large-chromatic-aberration optical system positioned on a Z-axis moving platform is arranged in front of the measured object, an illuminating optical fiber used for guiding light of a light source and a scanning optical fiber used for collecting reflected light of the measured object are arranged in front of a large-chromatic-aberration optical imaging system, the scanning optical fiber is connected with an optical fiber spectrometer, the optical fiber spectrometer scans the reflected light of the object, judges the spectrum of the reflected light and transmits the spectrum to an image processor, the image processor obtains the Z-axis position through the spectrum type and the relative position of the Z-axis moving platform, and the image processor is connected with the XY moving platform and receives the XY-axis position of the measured object;
further, the large chromatic aberration optical system comprises a light splitting prism and a large chromatic aberration distribution lens which are sequentially arranged, wherein the axial measurement wavelength range of the large chromatic aberration distribution lens is 266-2000mm, and the scanning range corresponding to the optical fiber spectrometer is 266-2000 mm.
Further, the chromatic aberration of the large chromatic aberration distribution lens is blue light, green light and red light in sequence;
further, the axial movement range of the Z-axis moving platform is 1-50 mm.
Further, the aperture range of the large chromatic aberration distribution lens is 0.05-0.9; the range of the Z-axis axial resolution can be realized to be 0.5-50 um;
the utility model has the advantages that: the design of the large-aperture and large-chromatic-aberration lens is adopted, high-precision three-dimensional scanning of an object is realized, the precision can reach the um level, and meanwhile, the lens is matched with light with different chromatic aberrations to judge the Z-axis position through the movement in the Z-axis direction, so that the calculation complexity of an image processor is reduced, and a certain scanning speed can be ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the reference numerals are explained below:
1. an XY moving platform, 2, an object to be measured, 3, a Z-axis moving platform, 4, a large chromatic aberration optical system, 41, a beam splitter prism, 42, a large chromatic aberration distribution lens, 5, an illumination optical fiber, 6, a scanning optical fiber, 7, an optical fiber spectrometer, 8 and an image processor;
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, a high-precision three-dimensional scanning system comprises an XY moving platform 1 and a measured object 2 located on the XY moving platform 1, wherein a large-chromatic-aberration optical system 4 located on a Z-axis moving platform 3 is arranged in front of the measured object, an illumination optical fiber 5 for guiding light of a light source and a scanning optical fiber 6 for collecting reflected light of the measured object are arranged in front of the large-chromatic-aberration optical imaging system 4, the scanning optical fiber is connected with an optical fiber spectrometer 7, the optical fiber spectrometer scans the reflected light of the object and judges the spectrum of the reflected light, the spectrum is transmitted to an image processor 8, the image processor obtains the Z-axis position through the spectrum type and the relative position of the Z-axis moving platform, and the image processor is connected with the XY moving platform and receives the XY-axis position of the measured;
through the high-precision three-dimensional scanning system, the image processor can obtain the position information of each scanning point of the measured object in real time and synthesize the three-dimensional image of the measured object through calculation, wherein the three-dimensional image of the whole measured object is synthesized through the three-dimensional coordinates of each point, which belongs to the prior art and is not repeated herein, and the specific implementation mode of the image processor is known by referring to the prior art.
The large chromatic aberration optical system comprises a light splitting prism 41 and a large chromatic aberration distribution lens 42 which are sequentially arranged, wherein the axial measurement wavelength range of the large chromatic aberration distribution lens is 266-2000mm, and the scanning range corresponding to the optical fiber spectrometer is 266-2000 mm.
In a specific embodiment, the chromatic aberration of the large chromatic aberration distribution lens 42 is blue light, green light, and red light in sequence;
when the light with different chromatic aberrations is irradiated on an object surface, the object reflects different chromatic light at different Z-direction positions, the reflected light is subjected to rapid spectrum scanning by the optical fiber spectrometer, which waveband is the light is judged, and the Z-direction position is calculated according to the Z-direction distance corresponding to the waveband.
In one embodiment, the axial movement range of the Z-axis moving platform 3 is 1-50 mm.
More specifically, the aperture range of the large chromatic aberration distribution lens 42 is 0.05-0.9; the range of the Z-axis axial resolution can be realized to be 0.5-50 um;
the above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. A high-precision three-dimensional scanning system is characterized in that: the X-axis and Y-axis optical imaging device comprises an XY moving platform and a measured object located on the XY moving platform, wherein a large chromatic aberration optical system located on a Z-axis moving platform is arranged in front of the measured object, an illuminating optical fiber used for guiding light of a light source and a scanning optical fiber used for collecting reflected light of the measured object are arranged in front of the large chromatic aberration optical imaging system, the scanning optical fiber is connected with an optical fiber spectrometer, the optical fiber spectrometer scans the reflected light of the object, judges the spectrum of the reflected light and transmits the spectrum to an image processor, the image processor obtains the Z-axis position through the spectrum type and the relative position of the Z-axis moving platform, and the image processor is connected with the XY moving platform and receives the XY-.
2. A high precision three dimensional scanning system according to claim 1, wherein: the large-chromatic-aberration optical system comprises a light splitting prism and a large-chromatic-aberration distribution lens which are sequentially arranged, wherein the axial measurement wavelength range of the large-chromatic-aberration distribution lens is 266-2000mm, and the scanning range corresponding to the optical fiber spectrometer is 266-2000 mm.
3. A high precision three dimensional scanning system according to claim 2, wherein: the chromatic aberration of the large chromatic aberration distribution lens is blue light, green light and red light in sequence.
4. A high precision three dimensional scanning system according to claim 3, wherein: the axial movement range of the Z-axis moving platform is 1-50 mm.
5. A high precision three dimensional scanning system according to claim 4, wherein: the aperture range of the large chromatic aberration distribution lens is 0.05-0.9; the range of Z-axis axial resolution can be realized to be 0.5-50 um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022627304.4U CN213301119U (en) | 2020-11-13 | 2020-11-13 | High-precision three-dimensional scanning system |
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| CN202022627304.4U CN213301119U (en) | 2020-11-13 | 2020-11-13 | High-precision three-dimensional scanning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485459A (en) * | 2020-11-13 | 2022-05-13 | 余姚市朗森光学科技有限公司 | High-precision three-dimensional scanning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485459A (en) * | 2020-11-13 | 2022-05-13 | 余姚市朗森光学科技有限公司 | High-precision three-dimensional scanning system |
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