CN111766748A - Combined light source - Google Patents
Combined light source Download PDFInfo
- Publication number
- CN111766748A CN111766748A CN201910262537.8A CN201910262537A CN111766748A CN 111766748 A CN111766748 A CN 111766748A CN 201910262537 A CN201910262537 A CN 201910262537A CN 111766748 A CN111766748 A CN 111766748A
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- CN
- China
- Prior art keywords
- light source
- mounting plate
- angle
- led
- low
- 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.)
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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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
- G01N21/8806—Specially adapted optical and illumination features
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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
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95684—Patterns showing highly reflecting parts, e.g. metallic elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
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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
- G01N21/01—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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06146—Multisources for homogeneisation, as well sequential as simultaneous operation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a combined light source which comprises a base, an LED light source and an industrial camera, wherein the LED light source comprises a low-angle annular light source and a coaxial mirror surface light source, and LED lamps of the low-angle annular light source are distributed in a conical array; the light-transmitting surface of the low-angle annular light source is a diffuse reflection plate; the coaxial mirror surface light source comprises a vertical plane luminous LED lamp strip, optical plane glass and a mounting plate; the optical plane glass and the LED lamp strip are distributed at an angle of 45 degrees. The invention has reasonable design, can ensure to obtain uniform product images and can better obtain the characteristics of scratch and crush images.
Description
Technical Field
The invention relates to a combined light source, and belongs to the field of visual detection.
Background
In the machine vision detection industry, aiming at products such as easy-open lids and pop-top cans in metal packaging products, in the visual detection photographing process, due to the light reflection characteristic of metal materials, the requirement on a light source is high, most of light sources used for detecting related products in the industry at present are bowl-shaped light sources and coaxial light sources in a combined mode, but aiming at the products such as the easy-open lids and the pop-top cans in the metal packaging products, the existing light sources cannot obtain high images, the existing high-uniformity light sources are not obvious in scratching and crushing characteristics of the surfaces of the easy-open lids and the pop-top cans, and the images of the products with thin scratches and small crushing cannot be obtained.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a method for acquiring scratch and crush image characteristics, which is reasonable in design, can ensure that uniform product images can be acquired, and has the characteristics of high uniformity and high characteristics.
In order to achieve the above object, the present invention provides a combined light source, which includes a base, an LED light source, and an industrial camera, wherein the LED light source includes a low-angle annular light source and a coaxial mirror light source, and LED lamps of the low-angle annular light source are distributed in a conical array; the light-transmitting surface of the low-angle annular light source is a diffuse reflection plate; the coaxial mirror surface light source comprises a vertical plane luminous LED lamp strip, optical plane glass and a mounting plate; the optical plane glass and the LED lamp strips are distributed at an angle of 45 degrees; the mounting plate is horizontally arranged, one end of the mounting plate is connected with the optical plane glass, and the other end of the mounting plate is connected with the LED lamp strip; the mounting plate is provided with a circular hole; the industrial camera is positioned above the optical plane glass.
As an improvement to the above technical solution, the light source further comprises an annular high-angle light source located on the upper surface of the low-angle annular light source, wherein the annular high-angle light source comprises a substrate with a circular hole at the center, LED lamps vertically arrayed on the lower surface of the substrate, and a conical diffuse reflection plate; the midline of the conical diffuse reflector plate passes through the center of the substrate.
As an improvement to the above technical solution, a center of the low-angle annular light source coincides with a center of the annular high-angle light source.
As an improvement to the above technical solution, the coaxial mirror light source further comprises a black light absorption surface perpendicular to the mounting plate, and the optical plane glass is located between the black light absorption surface and the LED light bar.
As the improvement of the technical scheme, the diameter of the circular hole of the mounting plate is 2-3 mm larger than that of the upper bottom surface of the diffusion plate.
As an improvement to the above technical scheme, the mounting plate is made of plastic or aluminum alloy.
Compared with the prior art, the invention has the beneficial effects that: the LED lamps of the low-angle annular light source are distributed in a conical array, and obliquely irradiate the object to be measured, so that the scratch and crush characteristics of the object can be acquired; the light-transmitting surface of the low-angle annular light source is a diffuse reflection plate, so that the uniformity of the light source is improved; the conical diffuse reflection plate enables the light emitted by the LED lamps in the annular high-angle light source to be more uniform; the optical plane glass and the LED lamp strips are distributed at an angle of 45 degrees; make LED lamp strip produces reflection and refraction, and it is convenient right low angle annular light source carries out the light filling, improves and illuminates the effect.
Drawings
The drawings illustrate preferred embodiments of the invention without limiting the scope of the invention's application.
Fig. 1 is a schematic structural diagram of a combined light source according to the present invention.
In the figure: 1 base, 2LED light sources, 21 low-angle annular light source, 211 diffuse reflection plate, 22 coaxial mirror light source, 221LED lamp strip, 222 optical plane glass, 223 mounting plate, 224 black light absorption surface, 3 industrial camera, 4 annular high-angle light source, 41 substrate, 42LED lamp, 43 conical diffuse reflection plate.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
In the present invention, unless otherwise specifically stated or limited, the terms "connected" and "connecting" are used in a broad sense, and for example, the connecting may be a fixed connection, a detachable connection, or an integral molding, and the connecting manner is not limited, and the connecting may be through a bolt connection, a rivet connection, a welding connection, etc., a direct connection, or an indirect connection through another mechanism known to those skilled in the art. Those skilled in the art can understand the specific meaning of the above or other similar terms in the present invention according to specific situations.
In the present invention, the term "comprising" is to be understood as open-ended, i.e. including but not limited to, unless explicitly stated or limited otherwise.
Fig. 1 is a schematic view of a combined light source according to the present invention. The invention provides a combined light source which comprises a base 1, an LED light source 2 and an industrial camera 3, wherein the LED light source 2 comprises a low-angle annular light source 21 and a coaxial mirror surface light source 22, and LED lamps of the low-angle annular light source 21 are distributed in a conical array; the light-transmitting surface of the low-angle annular light source 21 is a diffuse reflection plate 211; the coaxial mirror light source 22 comprises a vertical plane light-emitting LED light bar 221, optical plane glass 222 and a mounting plate 223; the optical plane glass and the LED light bars 221 are distributed at 45 degrees; the mounting plate 223 is horizontally arranged, one end of the mounting plate 223 is connected with the optical plane glass 222, and the other end is connected with the LED light bar 221; the mounting plate 223 is provided with a circular hole; the industrial camera 3 is located above the optical flat glass 222.
By adopting the above embodiment, the LED lamps of the low-angle annular light source 21 are distributed in a conical array, and irradiate the object to be measured obliquely, which is beneficial to obtaining the scratch and crush characteristics of the object; the light-transmitting surface of the low-angle annular light source 21 is a diffuse reflection plate 211, so that the uniformity of the light source is improved; the optical plane glass 222 and the LED light bar 221 are distributed at 45 degrees; the LED light bar 221 reflects and refracts light, so that the low-angle annular light source 21 is conveniently supplemented with light, and the lighting effect is improved.
In the above embodiment, preferably, the combined light source further includes an annular high-angle light source 4 located on the upper surface of the low-angle annular light source 21, the annular high-angle light source 4 includes a substrate 41 with a circular hole at the center, LED lamps 42 vertically arrayed on the lower surface of the substrate 41, and a conical diffuse reflection plate 43; the central line of the conical diffuse reflection plate 43 passes through the center of the substrate 41, and the arrangement of the conical diffuse reflection plate 43 makes the light emitted by the LED lamp 42 in the annular high-angle light source 4 more uniform.
In the above embodiment, preferably, the center of the low-angle annular light source 21 coincides with the center of the annular high-angle light source 4.
In the above embodiment, preferably, the coaxial mirror light source 22 further includes a black light absorbing surface 224 perpendicular to the mounting plate 223, and the optical plane glass 222 is located between the black light absorbing surface 224 and the LED light bar 221.
In the above embodiment, it is preferable that the diameter of the circular hole of the mounting plate 223 is 2 to 3 mm larger than the diameter of the upper bottom surface of the diffusion plate 43.
In the above embodiment, the material of the mounting plate 223 is preferably plastic or aluminum alloy.
Although the present invention has been described in terms of the above embodiments, it is to be understood that each of the above embodiments is not necessarily independent, and can be implemented independently or combined as appropriate by one of ordinary skill in the art to form other embodiments that can be understood and implemented by one of ordinary skill in the art.
The above embodiments are merely exemplary and not restrictive, and any equivalent embodiments made without departing from the spirit of the present invention should fall within the scope of the present invention.
Claims (6)
1. A combined light source comprises a base, an LED light source and an industrial camera, and is characterized in that the LEDs are distributed in a conical array; the light-transmitting surface of the low-angle annular light source is a diffuse reflection plate; the coaxial mirror surface light source comprises a vertical plane luminous LED lamp strip, optical plane glass and a mounting plate; the optical plane glass and the LED lamp strips are distributed at an angle of 45 degrees; the mounting plate is horizontally arranged, one end of the mounting plate is connected with the optical plane glass, and the other end of the mounting plate is connected with the LED lamp strip; the mounting plate is provided with a circular hole; the industrial camera is positioned above the optical plane glass.
2. The combination of claim 1, further comprising an annular high angle light source on the upper surface of said low angle annular light source, said annular high angle light source comprising a substrate with a central circular hole, LED lamps vertically arrayed on the lower surface of said substrate, a conical diffuse reflector; the midline of the conical diffuse reflector plate passes through the center of the substrate.
3. A combination light source according to claim 2, wherein the centre of said low angle annular light source coincides with the centre of said annular high angle light source.
4. The combination light source of claim 1, wherein said coaxial specular light source further comprises a black light absorbing surface perpendicular to said mounting plate, said optically flat glass being positioned between said black light absorbing surface and said LED light bar.
5. A combination light source according to claim 2, wherein the diameter of the circular hole of the mounting plate is 2-3 mm larger than the diameter of the upper bottom surface of the diffuser plate.
6. The combination light source of claim 1, wherein the mounting plate is made of plastic or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262537.8A CN111766748A (en) | 2019-04-02 | 2019-04-02 | Combined light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262537.8A CN111766748A (en) | 2019-04-02 | 2019-04-02 | Combined light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111766748A true CN111766748A (en) | 2020-10-13 |
Family
ID=72718206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910262537.8A Pending CN111766748A (en) | 2019-04-02 | 2019-04-02 | Combined light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111766748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903712A (en) * | 2021-01-30 | 2021-06-04 | 苏州科洛尼自动化有限公司 | Combined detection system applying multiple light sources and detection method adopting system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019908A1 (en) * | 1993-02-16 | 1994-09-01 | Northeast Robotics, Inc. | Continuous diffuse illumination method and apparatus |
| CN202563223U (en) * | 2012-03-14 | 2012-11-28 | 廖怀宝 | Optical detection device and color mapping light source device thereof |
| CN206361519U (en) * | 2016-12-29 | 2017-07-28 | 东莞创视自动化科技有限公司 | A kind of automatic optics inspection light source |
| CN207094369U (en) * | 2017-07-31 | 2018-03-13 | 东莞科视自动化科技有限公司 | A kind of parallel no shadow combined light source device of light filling |
-
2019
- 2019-04-02 CN CN201910262537.8A patent/CN111766748A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019908A1 (en) * | 1993-02-16 | 1994-09-01 | Northeast Robotics, Inc. | Continuous diffuse illumination method and apparatus |
| CN202563223U (en) * | 2012-03-14 | 2012-11-28 | 廖怀宝 | Optical detection device and color mapping light source device thereof |
| CN206361519U (en) * | 2016-12-29 | 2017-07-28 | 东莞创视自动化科技有限公司 | A kind of automatic optics inspection light source |
| CN207094369U (en) * | 2017-07-31 | 2018-03-13 | 东莞科视自动化科技有限公司 | A kind of parallel no shadow combined light source device of light filling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903712A (en) * | 2021-01-30 | 2021-06-04 | 苏州科洛尼自动化有限公司 | Combined detection system applying multiple light sources and detection method adopting system |
| CN112903712B (en) * | 2021-01-30 | 2023-01-03 | 苏州科洛尼自动化有限公司 | Combined detection system applying multiple light sources and detection method adopting system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20201013 |