CN215812451U - Thin glass optical filter detection device - Google Patents
Thin glass optical filter detection device Download PDFInfo
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- CN215812451U CN215812451U CN202121419711.4U CN202121419711U CN215812451U CN 215812451 U CN215812451 U CN 215812451U CN 202121419711 U CN202121419711 U CN 202121419711U CN 215812451 U CN215812451 U CN 215812451U
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- thin glass
- detection
- bracket
- parallel light
- optical filter
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Abstract
The utility model discloses a thin glass optical filter detection device, which comprises a detection camera, an image processing device, a bearing bracket for bearing a thin glass optical filter and a parallel light source for emitting parallel light to the surface of the thin glass optical filter; a telecentric lens is arranged at a light inlet of the detection camera, and the detection camera is used for acquiring an image of the thin glass optical filter under the irradiation of the parallel light through the telecentric lens; the image processing device is electrically connected with the detection camera and is used for detecting the pit defects of the thin glass optical filter according to the image. The utility model can effectively improve the identification capability of minor pit defects.
Description
Technical Field
The utility model relates to the field of optical filter detection, in particular to a thin glass optical filter detection device.
Background
Filters are optical devices used to select the desired wavelength band of radiation, and all filters absorb certain wavelengths.
When the glass optical filter is thin to a certain degree, the production process tends to be complex, and under the complex process, the thin glass optical filter may form concave points on the plate surface, and the concave points have sizes.
In the prior art, a dome light source, a ring light source or a point light source is generally adopted as a light source of a detection device, and then a camera is used for photographing and imaging, but the imaging of the small concave point defects by the light source is not obvious.
In view of this, it is desirable to design a thin glass filter detection apparatus to improve the capability of identifying the concave points of the thin glass filter.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thin glass filter detection device to solve the problems.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a thin glass optical filter detection device comprises an image processing device, a detection camera, a supporting bracket and a parallel light source, wherein the detection camera, the supporting bracket and the parallel light source are sequentially arranged;
a telecentric lens is arranged at a light inlet of the detection camera, and the detection camera is used for acquiring an image of the thin glass optical filter under the irradiation of the parallel light through the telecentric lens;
the image processing device is electrically connected with the detection camera and is used for detecting the pit defects of the thin glass optical filter according to the image.
Optionally, the thin glass optical filter detection device further comprises a detection platform, a first support and a second support are arranged on the detection platform, the detection camera is fixedly connected to the first support, the bearing support is fixedly connected to the second support, and the parallel light source is fixed on the detection platform;
the detection camera, the bearing support and the parallel light source are arranged at intervals in the sequence from top to bottom.
Optionally, a driving device for driving the detection camera to ascend and descend is installed on the first support, and a driving shaft of the driving device is fixedly connected with the detection camera.
Optionally, the support bracket includes two L-shaped support plates symmetrically arranged at intervals, the L-shaped support plate includes a transverse plate for supporting the thin glass optical filter and a vertical plate for limiting the position of the thin glass optical filter, and the transverse plate of the L-shaped support plate is opposite to the transverse plate of the L-shaped support plate.
Optionally, a bearing jig for bearing the thin glass optical filter is arranged between the two L-shaped bearing plates, the bearing jig is provided with a plurality of bearing grooves for bearing the thin glass optical filter, and the bottom of each bearing groove is provided with a through hole for the parallel light to pass through.
Optionally, the detection camera is a black and white camera or a color camera.
Optionally, the image processing apparatus includes a computer, a detection program for analyzing the image is installed in the computer, and a display screen of the computer is used for displaying the image and marking the position of the pit defect on the image.
Optionally, the bearing support comprises a lantern ring, the lantern ring is slidably sleeved on the second support, and the lantern ring is detachably fixed on the second support through a bolt.
Compared with the prior art, the utility model has the following beneficial effects:
in this embodiment, the parallel light source emits parallel light perpendicular to the plate surface of the thin glass optical filter, the parallel light penetrates the thin glass optical filter perpendicularly, the detection camera is used for acquiring an image of the thin glass optical filter under the irradiation of the parallel light through the telecentric lens, and the parallel light is dispersed due to the small concave point defect of the thin glass optical filter, so that obvious chromatic aberration exists between the position where the concave point defect exists in the image and other positions where the concave point defect does not exist, and the detection camera improves the recognition capability of the small concave point defect, so that good products and defective products are recognized effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model.
FIG. 1 is a schematic front view of a thin glass filter inspection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a thin glass filter inspection apparatus according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of position a in fig. 1.
Illustration of the drawings: 1. detecting a camera; 11. a telecentric lens; 2. an image processing device; 3. a supporting bracket; 31. an L-shaped bearing plate; 311. a transverse plate; 312. a vertical plate; 32. a collar; 4. a collimated light source; 5. a detection platform; 51. a first bracket; 52. a second bracket; 6. a drive device.
Detailed Description
In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 3, an embodiment of the present invention provides a thin glass optical filter detection apparatus, including a detection camera 1, an image processing apparatus 2, a support bracket 3 for supporting a thin glass optical filter, and a parallel light source 4 for emitting parallel light to a plate surface of the thin glass optical filter, where the detection camera 1, the support bracket 3, and the parallel light source 4 are sequentially arranged at intervals; that is, the detection camera 1 and the parallel light source 4 are respectively located at two opposite sides of the thin glass filter during detection, and the parallel light emitted by the parallel light source 4 is perpendicular to the side surface of the thin glass filter facing the parallel light source 4.
The light inlet of the detection camera 1 is provided with a telecentric lens 11, and the detection camera 1 is used for acquiring an image of the thin glass optical filter under the irradiation of parallel light through the telecentric lens 11.
The image processing device 2 is electrically connected with the detection camera 1, and the image processing device 2 is used for detecting the pit defects of the thin glass filter according to the images acquired by the detection camera 1.
It should be appreciated that the collimated light, when penetrating through the smaller pit defects, is dispersed by the pit defects; on the premise that the backlight is uniform parallel light, the brightness of an image shot by the qualified thin glass optical filter shot by the detection camera 1 is uniform, namely, no obvious color difference exists; the inspection camera 1 captures an image of the thin glass filter having the pit defects, and the positions of the pit defects on the image have a significant color difference. The thin glass optical filter detection device of this embodiment, in the detection of reality, it is obvious better to less concave point defect identification ability, can effectively discern yields and defective products.
It should be noted that the telecentric lens can clearly image at the working distance, and the imaging quality is improved.
In this embodiment, the parallel light source 4 includes an LED lamp and a double telecentric lens, and light emitted from the LED lamp forms parallel light through the double telecentric lens. Preferably, the parallel light source 4 may also be an ltcc hp CORE telecentric illuminator.
Optionally, the thin glass optical filter detection device further comprises a detection platform 5, a first support 51 and a second support 52 are arranged on the detection platform 5, the detection camera 1 is fixedly connected to the first support 51, the bearing support 3 is fixedly connected to the second support 52, and the parallel light source 4 is fixed on the detection platform 5;
the detection camera 1, the supporting bracket 3 and the parallel light source 4 are arranged at intervals in the order from top to bottom.
Specifically, the detection camera 1, the bearing support 3 and the parallel light source 4 are arranged at intervals in the sequence from top to bottom, so that a worker can conveniently place and take the thin glass optical filter, and the operation is simple.
Optionally, a driving device 6 for driving the detection camera 1 to ascend and descend is installed on the first bracket 51, and a driving shaft of the driving device 6 is fixedly connected with the detection camera 1.
Specifically, the driving device 6 drives the detection camera 1 to move towards the direction far away from the detection platform 5 or the direction close to the detection platform 5, so that the detection camera 1 and the telecentric lens 11 can accurately focus on the thin glass optical filter to take an image with better imaging effect. In particular, the driving device 6 may be a pneumatic cylinder, an electric telescopic rod or other type of device capable of driving the detection camera 1 to ascend or descend.
Alternatively, the supporting bracket 3 includes two L-shaped supporting plates 31 symmetrically arranged at intervals, the L-shaped supporting plates 31 include a horizontal plate 311 for supporting the thin glass filter and a vertical plate 312 for defining the position of the thin glass filter, and the horizontal plate 311 of one L-shaped supporting plate 31 is arranged opposite to the horizontal plate 311 of the other L-shaped supporting plate 31. Specifically, two L-shaped supporting plates 31 symmetrically arranged at intervals form a positioning slot, and the thin glass optical filter to be detected is directly or indirectly placed on the two transverse plates 311.
Optionally, a bearing fixture for bearing the thin glass optical filter is disposed between the two L-shaped bearing plates 31, the bearing fixture is provided with a plurality of bearing grooves for bearing the thin glass optical filter, and the bottom of each bearing groove is provided with a through hole for parallel light to pass through. Specifically, all be provided with the arch that is used for bearing weight of thin glass optical filter on the relative both sides cell wall of bearing the weight of the groove, can once only detect a plurality of thin glass optical filters through bearing the weight of the tool, promote detection efficiency.
Optionally, the detection camera 1 is a black and white camera or a color camera. Preferably, the present embodiment uses a black-and-white camera as the detection camera 1, and thus the pit defects are photographed with black and white alternately, and the black portion is darker than the background and the white portion is whiter than the background. And judging the distance between the black part and the white part, and if the distance between the black part and the white part is extremely small, judging the point as a pit point, thereby realizing the classification of good products and defective products on the basis of an algorithm.
Alternatively, the image processing apparatus 2 includes a computer in which a detection program for analyzing the image is installed, and a display screen of the computer is used to display the image and mark the position of the pit defect on the image. Specifically, this enables intuitive display of the detection result of the detected thin glass filter.
Optionally, the supporting bracket 3 includes a collar 32, the collar 32 is slidably sleeved on the second bracket 52, and the collar 32 is detachably fixed on the second bracket 52 by bolts. Specifically, the detection camera 1 can be focused better and the focusing range is wider by the bearing bracket of the bearing bracket 3.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The thin glass optical filter detection device is characterized by comprising an image processing device (2), a detection camera (1), a supporting bracket (3) for supporting the thin glass optical filter and a parallel light source (4) for emitting parallel light to the surface of the thin glass optical filter, wherein the detection camera, the supporting bracket and the parallel light source are sequentially arranged;
a telecentric lens (11) is arranged at a light inlet of the detection camera (1), and the detection camera (1) is used for acquiring an image of the thin glass optical filter under the irradiation of the parallel light through the telecentric lens (11);
the image processing device (2) is electrically connected with the detection camera (1), and the image processing device (2) is used for detecting the pit defects of the thin glass filter according to the image.
2. The thin glass filter detection device according to claim 1, further comprising a detection platform (5), wherein a first bracket (51) and a second bracket (52) are disposed on the detection platform (5), the detection camera (1) is fixedly connected to the first bracket (51), the support bracket (3) is fixedly connected to the second bracket (52), and the parallel light source (4) is fixed to the detection platform (5);
the detection camera (1), the bearing support (3) and the parallel light source (4) are arranged at intervals in sequence from top to bottom.
3. The thin glass filter detection device according to claim 2, wherein a driving device (6) for driving the detection camera (1) to ascend and descend is installed on the first bracket (51), and a driving shaft of the driving device (6) is fixedly connected with the detection camera (1).
4. The thin glass filter detection device according to claim 1, wherein the supporting bracket (3) comprises two spaced and symmetrically arranged L-shaped supporting plates (31), the L-shaped supporting plates (31) comprise a horizontal plate (311) for supporting the thin glass filter and a vertical plate (312) for limiting the position of the thin glass filter, and the horizontal plate (311) of one L-shaped supporting plate (31) is arranged opposite to the horizontal plate (311) of the other L-shaped supporting plate (31).
5. The thin glass filter detection device according to claim 4, wherein a carrying fixture for carrying the thin glass filter is disposed between the two L-shaped supporting plates (31), the carrying fixture is provided with a plurality of carrying grooves for carrying the thin glass filter, and the bottom of the carrying groove is provided with through holes for the parallel light to pass through.
6. The thin glass filter inspection device according to claim 1, wherein the inspection camera (1) is a black and white camera or a color camera.
7. The thin glass filter inspection device according to claim 1, wherein the image processing device (2) comprises a computer in which an inspection program for analyzing the image is installed, and a display screen of the computer is used for displaying the image and marking the position of the pit defect on the image.
8. The thin glass filter detection device according to claim 2, wherein the supporting bracket (3) comprises a collar (32), the collar (32) is slidably sleeved on the second bracket (52), and the collar (32) is detachably fixed on the second bracket (52) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121419711.4U CN215812451U (en) | 2021-06-24 | 2021-06-24 | Thin glass optical filter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121419711.4U CN215812451U (en) | 2021-06-24 | 2021-06-24 | Thin glass optical filter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215812451U true CN215812451U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121419711.4U Active CN215812451U (en) | 2021-06-24 | 2021-06-24 | Thin glass optical filter detection device |
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| Country | Link |
|---|---|
| CN (1) | CN215812451U (en) |
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2021
- 2021-06-24 CN CN202121419711.4U patent/CN215812451U/en active Active
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