CN218544258U

CN218544258U - Blast high even telecentric parallel light source

Info

Publication number: CN218544258U
Application number: CN202222351248.5U
Authority: CN
Inventors: 邓俊广; 张亚飞; 陈锦锋; 邓俊涛; 席娓
Original assignee: Dongguan Cogstek Automation Technology Co ltd
Current assignee: Dongguan Cogstek Automation Technology Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-02-28
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses a blast high even telecentric parallel light source, it relates to the visual detection field, and it is including being provided with the first border in first mesopore, is provided with the second border in the second mesopore, and the radiating seat is installed at the LED circuit board of radiating seat one side, and the diffuser plate is installed at the first lens in the second and second lens, first border and second border fixed connection to make first mesopore and second mesopore align in vertical direction, the outer wall and the first mesoporous inner wall fixed connection of radiating seat, so that the LED circuit board is located first mesopore, the diffuser plate is installed in first mesopore and is located the light-emitting direction department of LED circuit board, the utility model provides a non-uniform technical problem of telecentric parallel light source light path facula among the prior art.

Description

Blast high even telecentric parallel light source

Technical Field

The utility model relates to a visual detection technical field especially relates to a blast height evenly telecentricity parallel light source.

Background

In machine vision application, a telecentric parallel light source is commonly used for high-precision measurement, and the illumination mode has very high edge contour contrast, reduces diffuse reflection and is beneficial to image boundary identification. The telecentric parallel light source adopts telecentric light path design, the emergent light parallelism is high, the boundary effect is eliminated, the contrast of the object edge is improved, and higher measurement precision is obtained, such as edge burr detection, penetration gap blocking detection, surface scratch detection and contour dimension detection.

In the prior art, a telecentric parallel light source is made of a point light source and a convex lens, the point light source is positioned at the focus of the convex lens, and parallel light is generated by utilizing the refraction principle of the convex lens. The parallel light has no processing measure, so that the phenomenon of nonuniform light spots of a light path exists, and the problem of difficult judgment of visual images is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a blast high even telecentric parallel light source, it solves the inhomogeneous technical problem of telecentric parallel light source light path facula among the prior art.

In order to realize the above object, the utility model provides a blast height evenly telecentricity parallel light source, including being provided with first mesoporous first week circle, be provided with the mesoporous second week circle of second, the radiating seat installs the LED circuit board in radiating seat one side, and the diffuser plate is installed at the mesoporous first lens of second and second lens, first week circle and second week circle fixed connection to make first mesoporous and second mesopore align in vertical direction, the outer wall and the first mesoporous inner wall fixed connection of radiating seat, so that the LED circuit board is located first mesopore, install the diffuser plate in first mesopore and be located the light-emitting direction department of LED circuit board, the light that this technical scheme LED circuit board sent can improve the homogeneity of light after having passed through the diffuser plate, avoids appearing facula or the inhomogeneous of light path.

Among the above-mentioned technical scheme, be provided with first opening and the second opening that is linked together with first mesopore on the first circumference, the one end that is close to first opening on the first circumference is provided with first cylindricality section, and the one end that is close to the second opening is provided with second cylindricality section, be provided with first toper section between first cylindricality section and the second cylindricality section, the diameter of first cylindricality section < the diameter of second cylindricality section, the outer wall of radiating seat and the inner wall fixed connection of first cylindricality section.

Among the above-mentioned technical scheme, be provided with the first step that is used for fixed diffuser plate in the first cylindricality section, be convenient for fix the diffuser plate on first week circle.

In the above technical scheme, the second circumferential ring is provided with a third opening and a fourth opening which are communicated with the second middle hole, one end of the second circumferential ring close to the third opening is provided with a third cylindrical section, one end of the second circumferential ring close to the second opening is provided with a fourth cylindrical section, a second cylindrical section is arranged between the third cylindrical section and the fourth cylindrical section, the diameter of the third cylindrical section is smaller than that of the fourth cylindrical section, the outer wall of the second cylindrical section is fixedly connected with the inner wall of the third cylindrical section, the first lens is arranged in the third cylindrical section, and the second lens is arranged in the fourth cylindrical section.

In the above technical scheme, the inner walls of the first cylindrical section, the second cylindrical section, the first conical section, the third cylindrical section, the fourth cylindrical section and the second conical section are all provided with diffuse reflection layers.

In the above technical solution, the inner wall of the third cylindrical section is provided with a second step for fixing the first lens, so that the first lens is fixed on the second periphery.

Among the above-mentioned technical scheme, be provided with the protruding fixed part of annular on the outer wall of third cylindricality section, be convenient for with this technical scheme's fixed with fixed, be convenient for with the use of this technical scheme in each scene.

In the above technical scheme, a third step for fixing the second lens is provided in the fourth cylindrical section, and the fourth cylindrical section further comprises an annular pressing block for fixing the second lens on the third step.

Among the above-mentioned technical scheme, still including installing the retainer plate on the radiating seat, first week circle is supported and is leaned on the retainer plate, be provided with the bellied friction portion of a plurality of on the outer wall of retainer plate, be convenient for adjust the distance between LED circuit board and the diffuser plate.

Among the above-mentioned technical scheme, still including installing the radiator fan on the radiating seat to and the public end aviation plug of being connected with LED circuit board radiator fan electricity, be provided with the hole of dodging that is used for dodging public end aviation plug wire rod on the radiating seat.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. this technical scheme is provided with the diffuser plate in the light-emitting direction department of LED circuit board, can diffuse the light that the LED circuit board sent, becomes even light, then light passes through first lens and second lens, forms even parallel light, in addition, all be provided with the diffuse reflection layer on the inner wall of first cylindricality section, second cylindricality section, first toper section, third cylindricality section, fourth cylindricality section and second toper section, further improves the homogeneity of this technical scheme's light.

2. This technical scheme has set up the retainer plate, can further adjust the distance between LED circuit board and the diffuser plate, is convenient for adjust the distance between LED circuit board and the diffuser plate according to the luminousness of diffuser plate.

3. This technical scheme sets up radiator fan on the radiating seat, can also improve the life of LED circuit board when improving the heat-sinking capability of radiating seat, when luminance is lower moreover, can use the great LED circuit board of power, improves light luminance.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a high-brightness, uniform, telecentric parallel light source according to the present invention;

FIG. 2 is a schematic view of a high-brightness, uniform, telecentric parallel light source according to the present invention;

FIG. 3 is a schematic structural view of a brightening highly-uniform telecentric parallel light source provided by the present invention;

FIG. 4 is a schematic structural view of a brightening highly-uniform telecentric parallel light source provided by the present invention;

fig. 5 is a schematic structural view of a high-uniformity telecentric parallel light source for brightness enhancement provided by the present invention.

The reference numbers in the figures refer to: 1. a first cycle; 11. a first mesopore; 111. a first step; 12. a first opening; 13. a second opening; 14. a first cylindrical section; 15. a second cylindrical section; 16. a first conical section; 2. a second cycle; 21. a second mesopore; 22. a third opening; 23. a fourth opening; 231. an annular limiting part; 24. a third cylindrical section; 241. a second step; 242. an annular boss fixing portion; 2421. a fixing hole; 25. a fourth cylindrical section; 251. a third step; 26. a second conical section; 3. a heat dissipation base; 31. avoiding holes; 32. a groove; 33. a heat dissipating fin; 4. an LED circuit board; 5. a diffusion plate; 6. a first lens; 7. a second lens; 8. an annular pressing block; 9. a heat radiation fan; 10. a male aviation plug; 20. a stationary ring; 201. a friction portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention 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 indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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 meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. 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.

As shown in fig. 1-5, the present embodiment provides a brightness enhanced high-uniformity telecentric parallel light source, which comprises a first peripheral ring 1, a second peripheral ring 2, a heat sink 3, an LED circuit board 4, a diffuser plate 5, a first lens 6 and a second lens 7.

The first peripheral ring 1 is provided with a first central hole 11. The second peripheral ring 2 is provided with a second central hole 21. The LED circuit board 4 is arranged on one side of the heat dissipation seat 3, and the outer wall of the heat dissipation seat 3 is fixedly connected with the inner wall of the first middle hole 11, so that the LED circuit board 4 is positioned in the first middle hole 11. First periphery 1 and second periphery 2 fixed connection to make first mesopore 11 align in vertical direction with second mesopore 21, diffuser plate 5 installs in first mesopore 11 and is located the light-emitting direction department of LED circuit board 4, and first lens 6 and second lens 7 are all installed in second mesopore 21.

A first opening 12 and a second opening 13 communicated with the first middle hole 11 are formed in the first circumferential ring 1, a first cylindrical section 14 is arranged at one end, close to the first opening 12, of the first circumferential ring 1, a second cylindrical section 15 is arranged at one end, close to the second opening 13, of the first circumferential ring, a first conical section 16 is arranged between the first cylindrical section 14 and the second cylindrical section 15, the diameter of the first cylindrical section 14 is smaller than that of the second cylindrical section 15, and the outer wall of the heat dissipation seat 3 is fixedly connected with the inner wall of the first cylindrical section 14. Preferably, a first step 111 for fixing the diffusion plate 5 is provided in the first cylindrical section 14, so as to fix the diffusion plate 5 in the first central hole 11. The present embodiment also preferably includes a fixing ring 20 mounted on the heat sink 3, and the first peripheral ring 1 abuts against the fixing ring 20. Therefore, the distance between the LED circuit board 4 and the diffusion plate 5 can be adjusted by adjusting the distance between the fixing ring 20 and the heat sink 3, i.e. the distance between the first peripheral ring 1 and the heat sink 3. In addition, the outer wall of the fixing ring 20 is provided with a plurality of raised friction parts 201, which is convenient for adjusting the distance of the fixing ring 20 on the heat radiation seat 3.

The second circumferential ring 2 is provided with a third opening 22 and a fourth opening 23 which are communicated with the second middle hole 21, one end of the second circumferential ring 2 close to the third opening 22 is provided with a third cylindrical section 24, one end close to the second opening 13 is provided with a fourth cylindrical section 25, a second cylindrical section 26 is arranged between the third cylindrical section 24 and the fourth cylindrical section 25, the diameter of the third cylindrical section 24 is smaller than that of the fourth cylindrical section 25, the outer wall of the second cylindrical section 15 is fixedly connected with the inner wall of the third cylindrical section 24, the first lens 6 is arranged in the third cylindrical section 24, and the inner wall of the third cylindrical section 24 is provided with a second step 241 for fixing the first lens 6. Preferably, the fourth opening 23 of the second peripheral ring 2 is provided with an annular limiting portion 231, specifically, the first lens 6 is placed on the second step 241, and then the outer wall of the first peripheral ring 1 is clamped into the third cylindrical section 24 from the third opening 22, at this time, the annular limiting portion 231 limits the first lens 6 from the top and the periphery, so as to fix the bottom of the first lens 6 on the second step 241. The second lens 7 is arranged within the fourth cylindrical section 25. Wherein, a third step 251 for fixing the second lens 7 is arranged in the fourth cylindrical section 25, and the embodiment further comprises an annular pressing block 8 for fixing the second lens 7 on the third step 251. Specifically, after the second lens 7 is fixed to the third step 251, the second lens 7 is fixed to the third step 251 using the annular pressing piece 8 to be fixedly connected to the second peripheral ring 2.

In summary, in use, the light emitted from the LED circuit board 4 will pass through the diffusion plate 5, the first lens 6 and the second lens 7. The diffusion plate 5 makes the light emitted by the LED circuit board 4 uniform, and then the light passes through the first conical section 16 and the second conical section 15 and then passes through the first lens 6, preferably, the inner walls of the first cylindrical section 14, the first conical section 16 and the second cylindrical section 15 are all provided with a diffuse reflection layer, the light diffused by the diffusion plate 5 is subjected to diffuse reflection on the diffuse reflection layer, so that the uniformity of the light is improved, the light passes through the first lens 6 and then passes through the third cylindrical section 24, the second conical section 26 and the fourth cylindrical section 25, and then passes through the second lens 7, preferably, the inner walls of the third cylindrical section 24, the second conical section 26 and the fourth cylindrical section 25 are provided with diffuse reflection layers, the light passing through the first lens 6 is subjected to diffuse reflection on the diffuse reflection layer, so that the uniformity of the light is improved, and then the light is emitted in parallel from the second lens 7. In addition, the diameter of the third cylindrical section 24 is smaller than the diameter of the fourth cylindrical section 25, so that the diameter of the second lens 7 is larger than the diameter of the first lens 6 in the embodiment, and thus the area of the emitted light is larger.

Preferably, the outer wall of the third cylindrical section 24 of the present embodiment is provided with an annular protrusion fixing portion 242, and the annular protrusion fixing portion 242 is provided with a plurality of fixing holes 2421, so that the technical solution is convenient to install and use.

The embodiment further preferably comprises a heat dissipation fan 9 mounted on the heat dissipation seat 3, and a male aviation plug 10 electrically connected with the LED circuit board 4 and the heat dissipation fan 9, wherein an avoiding hole 31 for avoiding a wire of the male aviation plug 10 is formed in the heat dissipation seat 3. Particularly, heat dissipation seat 3 can transmit the heat of LED circuit board 4 during operation to improve LED circuit board 4's life, radiator fan 9 then transmits the heat of heat dissipation seat 3 to the external world, improves the heat-sinking capability of heat dissipation seat 3, and as preferred, is provided with recess 32 on heat dissipation seat 3, and radiator fan 9 installs in recess 32, like this, both is convenient for radiator fan 9's installation, has also improved radiator fan 9 and heat dissipation seat 3's area of contact, improves the heat-sinking capability. In addition, a plurality of raised heat dissipation fins 33 are preferably arranged on the outer wall of the heat dissipation seat 3, so that the contact area between the heat dissipation seat 3 and the outside air is further increased, and the heat dissipation capability is improved.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. The utility model provides a blast height evenly telecentricity parallel light source, its characterized in that, is including first week circle (1) that is provided with first mesopore (11), second week circle (2) that are provided with second mesopore (21), radiating seat (3), installs LED circuit board (4) in radiating seat (3) one side, diffuser plate (5), installs first lens (6) and second lens (7) in second mesopore (21), first week circle (1) and second week circle (2) fixed connection to make first mesopore (11) align in vertical direction with second mesopore (21), the outer wall of radiating seat (3) and the inner wall fixed connection of first mesopore (11) to make LED circuit board (4) be located first mesopore (11), diffuser plate (5) are installed in first mesopore (11) and are located the light-emitting direction department of LED circuit board (4).

2. A brightness enhancement high-uniformity telecentric parallel light source according to claim 1, wherein the first peripheral ring (1) is provided with a first opening (12) and a second opening (13) which are communicated with the first central hole (11), one end of the first peripheral ring (1) close to the first opening (12) is provided with a first cylindrical section (14), one end of the first peripheral ring close to the second opening (13) is provided with a second cylindrical section (15), a first conical section (16) is arranged between the first cylindrical section (14) and the second cylindrical section (15), the diameter of the first cylindrical section (14) is smaller than that of the second cylindrical section (15), and the outer wall of the heat sink (3) is fixedly connected with the inner wall of the first cylindrical section (14).

3. A brightness enhancing highly uniform telecentric parallel light source according to claim 2, wherein the first cylindrical section (14) has a first step (111) disposed therein for securing the diffuser plate (5).

4. A brightness enhancement high-uniformity telecentric parallel light source according to claim 2, wherein the second peripheral ring (2) is provided with a third opening (22) and a fourth opening (23) which are communicated with the second central hole (21), one end of the second peripheral ring (2) close to the third opening (22) is provided with a third cylindrical section (24), one end close to the second opening (13) is provided with a fourth cylindrical section (25), a second cylindrical section (26) is arranged between the third cylindrical section (24) and the fourth cylindrical section (25), the diameter of the third cylindrical section (24) is less than that of the fourth cylindrical section (25), the outer wall of the second cylindrical section (15) is fixedly connected with the inner wall of the third cylindrical section (24), the first lens (6) is arranged in the third cylindrical section (24), and the second lens (7) is arranged in the fourth cylindrical section (25).

5. A brightness enhancing high uniformity telecentric parallel light source according to claim 4, wherein the inner walls of the first cylindrical section (14), the second cylindrical section (15), the first tapered section (16), the third cylindrical section (24), the fourth cylindrical section (25) and the second tapered section (26) are provided with a diffuse reflective layer.

6. A brightness enhancing highly uniform telecentric parallel light source according to claim 4, wherein the third cylindrical segment (24) has a second step (241) on the inner wall for fixing the first lens (6).

7. A brightness enhancing highly uniform telecentric parallel light source according to claim 4, wherein the third cylindrical segment (24) is provided on the outer wall with an annular convex fixing portion (242).

8. A brightness enhancing highly uniform telecentric parallel light source according to claim 4, wherein a third step (251) for fixing the second lens (7) is provided in the fourth cylindrical section (25), and an annular pressing block (8) for fixing the second lens (7) on the third step (251) is further included.

9. A brightness enhancement high-uniformity telecentric parallel light source according to claim 1, further comprising a fixing ring (20) mounted on the heat sink (3), wherein the first peripheral ring (1) abuts against the fixing ring (20), and a plurality of raised friction portions (201) are arranged on the outer wall of the fixing ring (20).

10. The brightening high-uniformity telecentric parallel light source according to claim 1, further comprising a heat dissipation fan (9) installed on the heat dissipation base (3), and a male aviation plug (10) electrically connected with the heat dissipation fan (9) of the LED circuit board (4), wherein the heat dissipation base (3) is provided with an avoiding hole (31) for avoiding a wire of the male aviation plug (10).