CN211347981U - Optical lighting structure - Google Patents
Optical lighting structure Download PDFInfo
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- CN211347981U CN211347981U CN201922319471.XU CN201922319471U CN211347981U CN 211347981 U CN211347981 U CN 211347981U CN 201922319471 U CN201922319471 U CN 201922319471U CN 211347981 U CN211347981 U CN 211347981U
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Abstract
The utility model discloses an optical lighting structure, which is used for illuminating a workpiece to be detected so as to be used for camera image capture, and comprises a light source component and two groups of reflectors, wherein the light source component comprises two groups of light sources and a collecting lens, each light source corresponds to one collecting lens, the collecting lens is arranged in the irradiation range of the light source, and light emitted by the light source is emitted through the collecting lens so as to form a first light beam; each reflector is correspondingly positioned in the path of a first light beam; the two groups of first light beams are respectively reflected by corresponding reflectors to form two groups of second light beams, and the two groups of second light beams are oppositely irradiated on a workpiece to be detected to form a bright line for a camera to capture images; wherein, the included angle beta between the second light beam and the horizontal plane satisfies that beta is more than or equal to 0 degree and less than or equal to 60 degrees. The utility model discloses technical scheme has realized just can reaching the irradiation effect of area detection work piece through mutually supporting of lamp source subassembly and speculum, has improved light source overall structure's compactedness.
Description
Technical Field
The utility model relates to an optical detection technical field, in particular to optical lighting structure.
Background
Optical Inspection (Automatic optical Inspection) is a device for inspecting common defects encountered in the production of resin filled holes in PCBs based on optical principles, which is called Automatic optical Inspection. Optical detection is a new emerging test technology, and the development is rapid, and optical detection test equipment is released by many manufacturers. During automatic detection, the machine automatically scans a product to be detected through the camera, acquires an image, compares the detected PCB resin filled hole with qualified parameters in the database, detects the defect of the product to be detected through image processing, and displays the defect through a display or an automatic mark for maintenance personnel to maintain.
The existing optical detection light source has the problems that the requirement of a product to be detected is higher and higher, the requirement can be met only by coexistence of a plurality of light sources and a plurality of angles, the arrangement of the light sources is disordered, the volume of the whole light source is large, the light source part is difficult to adjust, the structure of the light source is complex, and the volume of the structure is large.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The main objective of the present invention is to provide an optical illumination structure, which aims to improve the compactness of the overall structure of the light source.
In order to achieve the above object, the present invention provides an optical illumination structure for illuminating a workpiece to be detected, so as to allow a camera to capture images, the optical illumination structure comprises a light source assembly and two sets of reflectors, the light source assembly comprises two sets of light sources and a collecting lens, each light source corresponds to one collecting lens, the collecting lens is disposed in an illumination range of the light source, and light emitted from the light source passes through the collecting lens to be emitted, so as to form a first light beam; each reflector is correspondingly positioned in the path of one first light beam; the two groups of first light beams are respectively reflected by the corresponding reflectors to form two groups of second light beams, and the two groups of second light beams are oppositely irradiated on a workpiece to be detected to form a bright line for a camera to capture images; wherein, the included angle beta between the second light beam and the horizontal plane satisfies that beta is more than or equal to 0 degree and less than or equal to 60 degrees.
In an embodiment of the present invention, two sets of the first light beams are symmetrically arranged; an included angle between the first light beam and the horizontal plane is defined as alpha, and alpha is more than or equal to 80 degrees and less than or equal to 90 degrees.
The utility model discloses an in the embodiment, the light source subassembly still includes the lamp stand, the lamp stand is equipped with the mounting groove, the lamp source is located in the mounting groove, the condensing lens sets up the notch department of mounting groove to partly protruding establishing the outside of mounting groove, the condensing lens is protruding to be established the outer part of mounting groove has convex surface structure.
The utility model discloses an in the embodiment, the light source subassembly is still including setting up diffusion piece in the mounting groove, diffusion piece clamp is established the lamp source with between the condensing lens.
The utility model discloses an in the embodiment, the light source subassembly still includes and wears to locate the cooling channel of lamp stand, cooling channel locates the lamp source is kept away from one side of condensing lens.
In an embodiment of the present invention, the light source assembly further includes a fixing bracket and a housing disposed on the fixing bracket, and the lamp holder is disposed in the housing.
In an embodiment of the present invention, the optical illumination structure further includes two sets of reflector fixing members having inclined planes, and the two inclined planes are symmetrically arranged in opposite directions; each inclined plane is provided with a groove, and each reflecting mirror is correspondingly arranged in one groove.
In an embodiment of the present invention, the inclination angle γ between the inclined plane and the horizontal plane satisfies that γ is greater than or equal to 40 ° and less than or equal to 70 °.
In an embodiment of the present invention, the reflector fixing member further includes a guide plate, the guide plate is disposed on one side of the light source assembly.
In an embodiment of the present invention, the light source is a light bar; and/or the condenser is a cylindrical mirror.
The utility model discloses technical scheme is through setting up light source subassembly and two sets of speculum, the light source subassembly includes two sets of lamp sources and condensing lens, each lamp source corresponds a condensing lens, the light that the lamp source sent jets out through the condensing lens and forms first light beam, the speculum sets up in the route of first light beam, two sets of first light beams are respectively through the speculum reflection in order to form two sets of second light beams, two sets of second light beams shine relatively and form a bright line on waiting to detect the work piece, it is more clear accurate to make the camera get for the picture, thereby realized only can reach the effect of shining of area detection work piece through mutually supporting of lamp source subassembly and speculum, the compactness of light source overall structure has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an optical illumination structure of the present invention;
fig. 2 is a cross-sectional view of the optical illumination structure of the present invention;
fig. 3 is a schematic diagram of an optical path structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lamp socket according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
110 | |
| 120 | |
130 | |
| 131 | |
140 | |
| 150 | |
160 | |
| 170 | Shell body | A | |
| 200 | Reflecting |
300 | Fixing part for |
| 310 | Groove | 320 | Guide plate |
| B | Second light beam |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an optical lighting structure for shine and wait to detect the work piece, get for the camera is got for the picture.
In the present embodiment, as shown in fig. 1, 2 and 3, the optical illumination structure includes a light source assembly 100 and two sets of reflectors 200; the light source assembly 100 includes two sets of light sources 110 and a collecting lens 120, each light source 110 corresponds to one collecting lens 120, the collecting lens 120 is disposed in an irradiation range of the light source 110, and light emitted by the light source 110 is emitted through the collecting lens 120 to form a first light beam a; each mirror 200 is correspondingly located in the path of a first light beam a; the two groups of first light beams A are respectively reflected by the corresponding reflectors 200 to form two groups of second light beams B, and the two groups of second light beams B are oppositely irradiated on a workpiece to be detected to form a bright line for a camera to capture images; wherein, the included angle beta between the second light beam B and the horizontal plane satisfies that beta is more than or equal to 0 degree and less than or equal to 60 degrees.
The lamp source 110 mainly functions to emit light, and the collecting mirror 120 is located in the irradiation range of the lamp source 110, so that the light emitted by the lamp source 110 can form a first light beam a through the condensing action of the collecting mirror 120; the reflector 200 is arranged in the path of the first light beam a, so that the first light beam a is reflected by the reflector 200 when being emitted to the reflector 200 to form a second light beam B, the two groups of reflectors 200 respectively reflect the two groups of first light beams a to form two groups of second light beams B respectively, the two groups of second light beams B intersect to form a bright line on a workpiece when being irradiated to the workpiece to be detected, and the bright line can clearly irradiate the structure on the workpiece to be detected, so that the camera can capture images more clearly and accurately.
It can be understood that the included angle β between the second light beam B and the horizontal plane may be determined according to actual conditions, as long as it is ensured that a bright line can be formed when two groups of second light beams B are relatively irradiated onto the workpiece to be detected, in this embodiment, the included angle β between the second light beam B and the horizontal plane satisfies: beta is more than or equal to 0 degree and less than or equal to 60 degrees, namely the included angle beta can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees or 60 degrees, and the like, and in the preferred embodiment of the utility model, the included angle beta between the second light beam B and the horizontal plane is 18 degrees.
In the practical application process, the specific structure of the light source 110 may be determined according to the practical situation, as long as the light source can emit light, and in this embodiment, the LED light bar is preferably adopted in consideration of the light intensity, the cost and other factors; the specific structure of the condenser lens 120 may also be determined according to actual conditions, as long as it is ensured that the light emitted from the lamp source 110 has a light condensing function, and in the present embodiment, a cylindrical lens is preferably used.
The utility model discloses technical scheme is through setting up light source subassembly 100 and two sets of speculum 200, light source subassembly 100 includes two sets of lamp sources 110 and condensing lens 120, each lamp source 110 corresponds a condensing lens 120, the light that lamp source 110 sent jets out through condensing lens 120 and forms first light beam A, speculum 200 sets up in first light beam A's route, two sets of first light beam A reflect through speculum 200 respectively in order to form two sets of second light beam B, two sets of second light beam B shines relatively and forms a bright line on waiting to detect the work piece, make the camera clear accuracy more when getting for instance, thereby realized just can reaching the illumination effect of area detection work piece through mutually supporting of lamp source subassembly 100 and speculum 200, the compactness of light source overall structure has been improved.
Further, referring to fig. 1 to 3, in order to make the second light beam B irradiate the workpiece to be detected better, the two groups of first light beams a are symmetrically arranged; an included angle between the first light beam A and the horizontal plane is defined as alpha, and alpha is more than or equal to 80 degrees and less than or equal to 90 degrees. The first light beams a are emitted after being condensed by the condensing lenses 120, and the two groups of first light beams a are symmetrically arranged, so that the two groups of condensing lenses 120 are symmetrically arranged, and the two groups of light sources 110 are symmetrically arranged. The included angle alpha between the first light beam A and the horizontal plane can be selected from 80 degrees, 85 degrees, 90 degrees and the like. In the present embodiment, considering that the first light beam a is formed by condensing the light by the condensing mirror 120, it is preferable that the angle between the condensing mirror 120 and the horizontal plane is 90 °.
Further, referring to fig. 1 to 4, the light source assembly 100 further includes a lamp socket 130, the lamp socket 130 is provided with a mounting groove 131, the lamp source 110 is disposed in the mounting groove 131, the condenser lens 120 is disposed at a notch of the mounting groove 131 and partially protrudes outside the mounting groove 131, and a portion of the condenser lens 120 protruding outside the mounting groove 131 has a convex structure. The lamp socket 130 functions to mount the lamp source 110 and the condenser lens 120. Be equipped with mounting groove 131 in lamp stand 130, lamp source 110 installs inside mounting groove 131, condensing lens 120 sets up the notch department at mounting groove 131, and the outside of mounting groove 131 is located to part arch, make the outside that the light that lamp source 110 sent can jet out mounting groove 131 smoothly through condensing lens 120, and simultaneously, this protruding portion of establishing outside mounting groove 131 of condensing lens 120 has convex structure, in order to realize the spotlight effect to light, thereby the unordered light that will send from lamp source 110 becomes orderly first light beam A.
In an embodiment of the present invention, referring to fig. 1 to 4, the light source assembly 100 further includes a diffusion sheet 140 disposed in the mounting groove 131, and the diffusion sheet 140 is sandwiched between the light source 110 and the condenser lens 120. The diffusion sheet 140 plays a role of light uniformity, and light emitted by the light source 110 is diffused by the diffusion sheet 140 so that light irradiated to the condenser lens 120 is more uniform, and further the first light beam a is more uniform, so that the second light beam B reflected by the reflector 200 is more uniform, and the light irradiated to the workpiece to be detected has a better effect.
Further, referring to fig. 1 to 4, the light source assembly 100 further includes a cooling channel 150 penetrating through the lamp holder 130, and the cooling channel 150 is disposed on a side of the lamp source 110 away from the condenser lens 120. The cooling channel 150 is used for circulating a cooling fluid to cool and dissipate heat of the lamp source 110.
In an embodiment of the present invention, referring to fig. 1, the light source assembly 100 further includes two sets of fixing brackets 160 disposed oppositely and a housing 170 disposed between the two sets of fixing brackets 160, and the lamp socket 130 is disposed in the housing 170. The lamp socket 130 is disposed in the housing 170, and the housing 170 is clamped between the two sets of fixing brackets 160, so as to achieve the fixing and mounting functions of the light source assembly 100.
Further, referring to fig. 1 to 3, the optical illumination structure further includes two sets of reflector fixing members 300 having inclined planes, wherein the two inclined planes are symmetrically disposed in opposite directions; a groove 310 is formed on each inclined surface, and each reflector 200 is correspondingly installed in one groove 310. The mirror 200 is installed in the groove 310 on the inclined plane such that the mirror 200 is obliquely disposed, thereby performing a function of reflecting the first light beam a into the second light beam B. In order to reflect the first light beam a with a relatively high angle (80-90 °) into the second light beam B with a relatively low angle (0-60 °), the inclination angle of the reflecting mirror 200 is preferably set to 40-70 °, i.e. the inclination angle γ of the inclined plane to the horizontal plane satisfies 40 ° ≦ γ ≦ 70 °, such as 40 °, 50 °, 60 °, or 70 °, and in the present embodiment, the inclination angle γ is preferably 54 °.
In an embodiment of the present invention, referring to fig. 1 to 3, the reflector holder 300 further includes a guide plate 320, and the guide plate 320 is disposed on a side of the reflector holder 300 away from the light source assembly 100. The guide plates 320 play a role in pressing the workpiece to be detected, in the practical application process, two groups of optical illumination structures are oppositely arranged to be respectively positioned at two sides of the workpiece to be detected, the guide plates 320 at two sides clamp the workpiece to be detected in the middle, and the function of positioning and fixing the workpiece to be detected is played.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An optical illumination structure for illuminating a workpiece to be inspected for image capture by a camera, comprising:
the light source assembly comprises two groups of light sources and a collecting lens, each light source corresponds to one collecting lens, the collecting lenses are arranged in the irradiation range of the light sources, and light emitted by the light sources is emitted through the collecting lenses to form first light beams; and
two groups of reflectors, wherein each reflector is correspondingly positioned in the path of one first light beam; the two groups of first light beams are respectively reflected by the corresponding reflectors to form two groups of second light beams, and the two groups of second light beams are oppositely irradiated on a workpiece to be detected to form a bright line for a camera to capture images;
wherein, the included angle beta between the second light beam and the horizontal plane satisfies that beta is more than or equal to 0 degree and less than or equal to 60 degrees.
2. The optical illumination structure of claim 1, wherein the two sets of first light beams are symmetrically arranged; an included angle between the first light beam and the horizontal plane is defined as alpha, and alpha is more than or equal to 80 degrees and less than or equal to 90 degrees.
3. The structure of claim 2, wherein the light source assembly further comprises a lamp holder, the lamp holder is provided with a mounting groove, the light source is arranged in the mounting groove, the condenser lens is arranged at the notch of the mounting groove and partially protrudes outside the mounting groove, and the portion of the condenser lens protruding outside the mounting groove has a convex structure.
4. The optical lighting structure of claim 3, wherein the light source assembly further comprises a diffuser disposed in the mounting groove, the diffuser being sandwiched between the light source and the condenser.
5. The optical illumination structure as claimed in claim 3, wherein the light source assembly further comprises a cooling channel disposed through the lamp holder, the cooling channel being disposed on a side of the lamp source away from the condenser lens.
6. The structure of any one of claims 3 to 5, wherein the light source assembly further comprises a fixing bracket and a housing disposed on the fixing bracket, and the lamp holder is disposed in the housing.
7. An optical illumination structure as claimed in any one of claims 1 to 5, characterized in that the optical illumination structure further comprises two sets of reflector holders having inclined planes, the two inclined planes being symmetrically arranged opposite to each other; each inclined plane is provided with a groove, and each reflecting mirror is correspondingly arranged in one groove.
8. The structure of claim 7, wherein the slope is inclined at an angle γ with respect to the horizontal plane of 40 ° ≦ γ ≦ 70 °.
9. The illumination structure as recited in claim 7, wherein said reflector holder further comprises a guide plate, said guide plate being disposed on a side of said reflector holder remote from said light source module.
10. The optical lighting structure of any one of claims 1 to 5, wherein the light source is a light bar; and/or the condenser is a cylindrical mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319471.XU CN211347981U (en) | 2019-12-18 | 2019-12-18 | Optical lighting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319471.XU CN211347981U (en) | 2019-12-18 | 2019-12-18 | Optical lighting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211347981U true CN211347981U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319471.XU Active CN211347981U (en) | 2019-12-18 | 2019-12-18 | Optical lighting structure |
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| Country | Link |
|---|---|
| CN (1) | CN211347981U (en) |
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2019
- 2019-12-18 CN CN201922319471.XU patent/CN211347981U/en active Active
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