CN113252708A - Light source system and optical imaging detection system - Google Patents
Light source system and optical imaging detection system Download PDFInfo
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- CN113252708A CN113252708A CN202110463018.5A CN202110463018A CN113252708A CN 113252708 A CN113252708 A CN 113252708A CN 202110463018 A CN202110463018 A CN 202110463018A CN 113252708 A CN113252708 A CN 113252708A
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- light source
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- led light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
- G01N2021/9583—Lenses
Abstract
The Light source system and the optical imaging detection system provided by the disclosure adopt an annular multi-channel Light Emitting Diode (LED) Light source component and are matched with an optical convex lens to form a unique Light source system, and then the Light source system is matched with an image acquisition device to form the optical imaging detection system. The optical imaging detection system is applied to detecting the color printing contact lenses, can avoid the interference caused by the color printing patterns in the printing area of the color printing contact lenses, shows the defect characteristics of the printing area in the images, and is favorable for improving the detection accuracy and the detection efficiency of the product defects.
Description
Technical Field
The disclosure relates to the technical field of optical detection, in particular to a light source system and an optical imaging detection system.
Background
The color printing contact lens is to print patterns with colors on the surface of the soft contact lens by a color printing technology and equipment. Typically, the center of the pattern is left blank as the optic zone of the lens, consistent with the function of a conventional contact lens. The patterns and the patterns of the color printing area play a role in beautifying.
However, as shown in fig. 1, in the conventional optical imaging diagram, the pattern and the pattern of the color printing area may cover or overlap the defect of a partial area in the common contact lens in the optical imaging system, and the detection difficulty of the defect of the color printing area of the color printing contact lens detected by machine vision is quite high, thereby affecting the detection accuracy and the detection efficiency of the product defect.
Disclosure of Invention
The present disclosure presents a light source system and an optical imaging detection system.
In a first aspect, the present disclosure provides a light source system comprising: an annular light source assembly; and the convex lens is positioned at the light emitting side of the annular light source assembly and is used for focusing the annular light beam emitted by the annular light source assembly.
In some alternative embodiments, the annular light source assembly is an annular multi-channel LED light source assembly comprising at least two annular LED light sources, one channel for each annular LED light source.
In some optional embodiments, the annular multi-channel LED light source assembly further comprises: the LED lamp beads of each annular LED light source are connected in series.
In some optional embodiments, the annular multi-channel LED light source assembly further comprises: and the supporting structure is used for supporting the central LED lamp bead and each annular LED light source.
In some alternative embodiments, the support structure includes a housing and a base, the housing being fixedly attached to the base.
In some optional embodiments, the annular multi-channel LED light source assembly further comprises: and the multi-channel light source control unit is electrically connected with the central LED lamp bead and each annular LED light source and is used for independently controlling the channel corresponding to each annular LED light source.
In some optional embodiments, the multi-channel LED light source assembly further comprises: and the light scattering plate is arranged on the central LED lamp bead and the at least two annular LED light sources.
In some optional embodiments, each of the central LED lamp bead and each of the LED lamp beads of the annular LED light sources is a single-color LED lamp bead, an ultraviolet LED lamp bead, an infrared LED lamp bead, or a white LED lamp bead.
In a second aspect, the present disclosure provides an optical imaging detection system comprising: transparent carrier, image acquisition device and light source system as in the first aspect: the transparent bearing body is positioned above the convex lens and used for bearing an object to be detected; the image acquisition device is positioned above the transparent bearing body.
In some alternative embodiments, the object being inspected is a color printed contact lens.
In order to solve the technical problems that in the existing optical imaging picture, the pattern and the decorative pattern of a color printing area can cover or overlap the defects of partial areas in a common contact lens in an optical imaging system, the detection difficulty of the defects of the color printing area of the color printing contact lens detected by machine vision is quite high, and the detection accuracy and the detection efficiency of product defects are influenced, the light source system and the optical imaging detection system provided by the disclosure adopt an annular multi-channel LED light source component and are matched with an optical convex lens to form a unique light source system, and then the light source system is matched with an image acquisition device to form the optical imaging detection system. The optical imaging detection system is applied to detecting the color printing contact lenses, can avoid the interference caused by the color printing patterns in the printing area of the color printing contact lenses, shows the defect characteristics of the printing area in the images, and is favorable for improving the detection accuracy and the detection efficiency of the product defects.
Drawings
Other features, objects and advantages of the disclosure will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a prior art optical imaging view;
FIG. 2 is a schematic structural diagram of a light source system according to an embodiment of the present disclosure;
FIG. 3 is a first structural schematic diagram of an annular multi-channel LED light source assembly according to an embodiment of the present disclosure;
FIG. 4 is a second schematic view of an annular multi-channel LED light source assembly according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a configuration of an optical imaging detection system according to an embodiment of the present disclosure;
FIG. 6 is an optical imaging plot from an optical imaging detection system according to an embodiment of the present disclosure.
Description of the symbols:
1-annular light source component, 2-convex lens, 31-central LED lamp bead, 32-first annular LED light source, 33-second annular LED light source, 34-third annular LED light source, 35-supporting structure, 351-shell, 352-base, 36-light source control cable interface, 37-light scattering plate, 4-transparent carrier, 5-detected object and 6-image acquisition device.
Detailed Description
The present disclosure is described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Fig. 2 shows a schematic diagram of a light source system according to an embodiment of the present disclosure. As shown in fig. 2, the light source system in the present embodiment includes an annular light source assembly 1 and a convex lens 2. Wherein the convex lens 2 may be located at a light emitting side of the annular light source assembly 1.
In the present embodiment, the annular light source assembly 1 may be used to emit an annular light source. The convex lens 2 may be used to focus the annular light beam emitted by the annular light source assembly 1 to form an annular focused light source. The convex lens 2 may be a spherical convex lens or an aspherical convex lens.
In the present embodiment, the annular light source assembly 1 and the convex lens 2 may be sequentially disposed on a chassis (not shown in fig. 1) from bottom to top. The annular light source assembly 1 and the convex lens 2 may be spaced apart by a preset distance. The preset distance may be set according to actual requirements, and this embodiment does not limit this.
Referring to fig. 3 and 4, fig. 3 shows a first structural schematic diagram of an annular multi-channel LED light source assembly according to an embodiment of the present disclosure. Fig. 4 shows a second structural schematic of an annular multi-channel LED light source assembly according to an embodiment of the present disclosure.
In some alternative embodiments, as shown in fig. 3 and 4, the annular light source assembly 1 may be an annular multi-channel LED light source assembly. The annular multi-channel LED light source assembly may comprise at least two annular LED light sources. One channel for each annular LED light source.
Here, the annular multi-channel LED light source component has the advantages of small volume, low power consumption, low heat productivity and the like.
In some alternative embodiments, as shown in fig. 4, the annular multi-channel LED light source assembly may further comprise a central LED bead 31. In the annular multi-channel LED light source component, the annular LED light sources are arranged in sequence by taking the central LED lamp bead 31 as the center. LED lamp beads of each annular LED light source are connected in series.
Here, a four-channel LED light source assembly is illustrated as fig. 4. The four-channel LED light source assembly comprises a central LED lamp bead 31, a first annular LED light source 32, a second annular LED light source 33 and a third annular LED light source 34, and can respectively correspond to corresponding channels in four different channels.
Here, the LED lamp beads of each annular LED light source are connected in series, that is, the LED lamp beads of each annular LED light source can be adjusted simultaneously.
In some alternative embodiments, as shown in fig. 3, the annular multi-channel LED light source assembly may further comprise a support structure 35. The support structure 35 is used for supporting the central LED lamp bead 31 and each annular LED light source.
In some alternative embodiments, as shown in fig. 3, support structure 35 may include a housing 351 and a base 352. The housing 351 may be fixedly attached to the base 352.
In some alternative embodiments, the annular multi-channel LED light source assembly may further comprise a multi-channel light source control unit (not shown in fig. 3). The multi-channel light source control unit can be electrically connected with the central LED lamp bead 31 and each annular LED light source. The multi-channel light source control unit can be used for independently controlling the channels corresponding to the annular LED light sources.
Here, the multi-channel light source control unit can independently set parameters such as light intensity of each annular LED light source, and can also independently control the on-off of each annular LED light source, so as to realize the automatic adjustment of light source parameters.
In some alternative embodiments, as shown in fig. 3, the multi-channel LED light source assembly may further comprise a light diffusion plate 37. The light diffusion plate 37 may be provided on the central LED bead 31 and the at least two annular LED light sources.
Here, the light diffusion plate 37 can diffuse the LED point light source to further uniformize the light field formed by the annular LED light source.
In some optional embodiments, the central LED lamp bead 31 and each LED lamp bead of each annular LED light source may be a single-color LED lamp bead, an ultraviolet LED lamp bead, an infrared LED lamp bead, or a white LED lamp bead.
In some alternative embodiments, the multi-channel LED light source assembly may further comprise a light source control cable interface 36.
Referring to fig. 5, a schematic structural diagram of an optical imaging detection system according to an embodiment of the disclosure is shown. The optical imaging detection system in this embodiment includes a transparent carrier 4, an image capture device 6, and a light source system as shown in fig. 2. Wherein the transparent carrier 4 can be located above the convex lens 2.
In this embodiment, the transparent carrier 4 may be used to carry the object 5 to be detected. The image acquisition device 6 can acquire an image of the detected object 5. The image acquisition device 6 may be located above the transparent carrier 4. The light source system, the transparent carrier 4 and the image capturing device 6 may be sequentially disposed on a rack (not shown in fig. 5) from bottom to top. The light source system (the annular light source component 1 and the convex lens 2), the transparent carrier 4 and the image acquisition device 6 can be separated by a preset distance. The preset distance may be set according to actual requirements, and this embodiment does not limit this.
In some alternative embodiments, the inspected object 5 may be a color printed contact lens.
Referring to fig. 6, fig. 6 shows an optical imaging diagram obtained by the optical imaging detection system according to the embodiment of the disclosure.
The defect features of the printed area of the color printed contact lens can be visualized in the image as shown in the optically imaged image of fig. 6. Specifically, if the color printed contact lens is defect free, the resulting image is uniform because the color printed contact lens is smooth and uniform throughout. If the color-printed contact lens is defective, the defect destroys the optical uniformity of the color-printed contact lens, and strong light scattering occurs at the defect, thereby showing bright spots or dark spots, etc. in the image.
The optical imaging diagram shown in fig. 6 can be obtained by adjusting the optical imaging detection system provided by the present disclosure to a dark field illumination mode. Since the image pickup device 6 is mounted directly above the object 5 to be inspected (color printing contact lens) so that the light from the light source system does not directly enter the lens of the image pickup device 6, the image picked up by the image pickup device 6 is dark due to insufficient luminous flux, and dark field imaging is performed. Defects on color printed contact lenses scatter light, which is not specifically directed, more by scattering, in all directions. The light scattered upward by the defect enters the lens of the image capturing device 6, and forms a bright spot, a bright spot or a bright line on the image, thereby causing the defect on the color contact lens to be revealed.
The light source system and the optical imaging detection system provided by the disclosure adopt the annular light source component 1 (for example, an annular multi-channel LED light source component) and match the optical convex lens 2 to form a unique light source system, and then match the light source system with the image acquisition device 6 to form the optical imaging detection system. The optical imaging detection system is applied to detecting the color printing contact lenses, can avoid the interference caused by the color printing patterns in the printing area of the color printing contact lenses, shows the defect characteristics of the printing area in the images, and is favorable for improving the detection accuracy and the detection efficiency of the product defects.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the inventive concept as defined above. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Claims (10)
1. A light source system, comprising:
an annular light source assembly;
and the convex lens is positioned at the light emitting side of the annular light source assembly and is used for focusing the annular light beam emitted by the annular light source assembly.
2. The light source system of claim 1, wherein the annular light source assembly is an annular multi-channel LED light source assembly comprising at least two annular LED light sources, one channel for each annular LED light source.
3. The light source system of claim 2, wherein the annular multi-channel LED light source assembly further comprises:
the LED light source assembly comprises a central LED lamp bead, and the annular LED light sources in the annular multi-channel LED light source assembly are sequentially arranged by taking the central LED lamp bead as the center, and the LED lamp beads of the annular LED light sources are connected in series.
4. The light source system of claim 3, wherein the annular multi-channel LED light source assembly further comprises:
and the supporting structure is used for supporting the central LED lamp bead and each annular LED light source.
5. The light source system of claim 4, wherein the support structure comprises a housing and a base, the housing being fixedly attached to the base.
6. The light source system of claim 3, wherein the annular multi-channel LED light source assembly further comprises:
and the multi-channel light source control unit is electrically connected with the central LED lamp bead and each annular LED light source and is used for independently controlling the channel corresponding to each annular LED light source.
7. The light source system of claim 3, wherein the annular multi-channel LED light source assembly further comprises:
and the light scattering plate is arranged on the central LED lamp bead and the at least two annular LED light sources.
8. The light source system of claim 3, wherein the central LED bead and each LED bead of each of the annular LED light sources is a single color LED bead, an ultraviolet LED bead, an infrared LED bead, or a white light LED bead.
9. An optical imaging inspection system comprising a transparent carrier, an image capture device, and a light source system according to any one of claims 1 to 8:
the transparent bearing body is positioned above the convex lens and used for bearing an object to be detected;
the image acquisition device is positioned above the transparent carrier.
10. The optical imaging detection system of claim 9, wherein the object under inspection is a color printed contact lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110463018.5A CN113252708A (en) | 2021-04-22 | 2021-04-22 | Light source system and optical imaging detection system |
| TW111115096A TW202234055A (en) | 2021-04-22 | 2022-04-20 | Light source system and optical imaging detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110463018.5A CN113252708A (en) | 2021-04-22 | 2021-04-22 | Light source system and optical imaging detection system |
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| Publication Number | Publication Date |
|---|---|
| CN113252708A true CN113252708A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110463018.5A Pending CN113252708A (en) | 2021-04-22 | 2021-04-22 | Light source system and optical imaging detection system |
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| CN (1) | CN113252708A (en) |
| TW (1) | TW202234055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486902A (en) * | 2021-12-03 | 2022-05-13 | 平方和(北京)科技有限公司 | Quality detection system and method |
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- 2021-04-22 CN CN202110463018.5A patent/CN113252708A/en active Pending
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- 2022-04-20 TW TW111115096A patent/TW202234055A/en unknown
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| JP2001324450A (en) * | 2000-03-06 | 2001-11-22 | View Engineering Inc | Method and system for illuminating object with focused light at varying angles of incidence and multi-color light source for use therein |
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| EP2131174A2 (en) * | 2008-06-05 | 2009-12-09 | CooperVision International Holding Company, LP | Multi-imaging automated inspection methods and systems for wet ophtalmic lenses |
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| CN114486902B (en) * | 2021-12-03 | 2024-02-06 | 平方和(北京)科技有限公司 | Quality detection system and method |
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| Publication number | Publication date |
|---|---|
| TW202234055A (en) | 2022-09-01 |
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