CN218468913U

CN218468913U - Annular light source with adjustable divergence angle and detection device

Info

Publication number: CN218468913U
Application number: CN202222815810.5U
Authority: CN
Inventors: 张子浩
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-02-10
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses an annular light source with adjustable divergence angle and a detection device, wherein the annular light source comprises an annular base, a light-emitting component, an annular light-gathering rod, a first annular mounting component and a second annular mounting component, the first annular mounting component is in threaded connection with the annular base, and the second annular mounting component can lift relative to the annular base; light rays emitted by the light-emitting component can irradiate on the workpiece through the annular light-gathering rod, and the annular light-gathering rod enables the light rays to be diffused at a preset angle; simultaneously, can be through the first annular installation component of knob, under the effect of screw thread, first annular installation component can go up and down for annular base, makes the interval between annular spotlight stick and the light emitting component change, and synchronous adjustment second annular installation component again afterwards ensures that annular spotlight stick is by first annular installation component and second annular installation component butt to change and diverge the angle, make detection device can be applied to various detection scenes under the prerequisite of not changing the light source.

Description

Annular light source with adjustable divergence angle and detection device

Technical Field

The utility model relates to an annular light source technical field especially relates to a disperse annular light source and detection device of angularly adjustable.

Background

The annular light source is a light source commonly used in the field of machine vision, and is annular as a whole, light rays of the annular light source are emitted from an annular area and finally irradiate on a workpiece, and a camera can pass through an inner ring of the annular area to acquire surface information of the workpiece.

Conventional annular light source includes annular PCB lamp plate, is provided with a plurality of LED lamp pearls along circumference distribution on the PCB lamp plate to the top of PCB lamp plate still corresponds the position of each LED lamp pearl and is provided with lens, and lens play refractive effect, can change the light irradiation angle of LED lamp pearl, and then the light that makes annular light source send can follow predetermined angle and shine on the work piece. However, the lens position in the above structure is fixed, the adjustability is poor, the light divergence angle of the annular light source is fixed, only a specific scene is matched, and if the scene is changed, the annular light source with different divergence angles needs to be replaced, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a disperse annular light source and detection device of angularly adjustable, solve the annular light source among the prior art and have the poor problem of commonality.

To achieve the purpose, the utility model adopts the following technical proposal:

an annular light source with adjustable divergence angle comprises an annular base, a light emitting component and an annular light gathering rod which are sequentially arranged, wherein the light emitting component is fixedly connected to the annular base, and a gap is reserved between the annular light gathering rod and the light emitting component;

a first annular mounting assembly is arranged on the inner side of the annular light gathering rod, a second annular mounting assembly is arranged outside the annular light gathering rod, and the annular light gathering rod is respectively abutted against the first annular mounting assembly and the second annular mounting assembly;

the first annular mounting assembly is in threaded connection with the annular base, and the second annular mounting assembly can lift relative to the annular base.

Optionally, an annular outer housing is sleeved outside the annular base, and the second annular mounting assembly is arranged inside the annular outer housing; the second annular mounting assembly can slide relative to the annular outer shell to press the annular light gathering rod on the first annular mounting assembly.

Optionally, the second annular mounting assembly comprises a second abutment block; one side of the second abutting block facing the annular light gathering rod abuts against the annular light gathering rod;

a positioning threaded hole is formed in the other side of the second abutting block, an adjusting groove is formed in the position, corresponding to the positioning threaded hole, of the annular outer shell, and the groove length direction of the adjusting groove is parallel to the lifting direction of the second annular mounting assembly;

the positioning threaded hole is connected with a positioning screw, the thread of the positioning screw penetrates through the adjusting groove and is in threaded connection with the positioning threaded hole, and the nut part of the positioning screw is abutted to the annular outer shell.

Optionally, the second annular mounting assembly includes a second abutting block and an elastic unit, and one side of the second abutting block facing the annular light gathering rod abuts against the annular light gathering rod;

the annular shell body is kept away from the annular base is inwards provided with a mounting boss portion in a protruding mode, one end of the elastic unit is abutted to the mounting boss portion, and the other end of the elastic unit is abutted to the second abutting block.

Optionally, the elastic unit is a spring.

Optionally, a second arc-shaped abutting surface is formed on one side, facing the annular light gathering rod, of the second abutting block, and the second arc-shaped abutting surface abuts against the annular light gathering rod.

Optionally, the first annular mounting assembly comprises a first abutting block and a first annular connecting seat which are integrally formed;

the first annular connecting seat is in threaded connection with the annular base, and a first arc-shaped abutting surface is formed on one side, facing the annular light gathering rod, of the first annular connecting seat.

Optionally, a rotating groove is formed in an end face, away from the annular base, of the first abutting block.

Optionally, the light emitting assembly includes a plurality of light emitting bead assemblies distributed along a circumference, the light emitting bead assemblies include a plurality of LED beads, and the light emitting bead assemblies are electrically connected to the control line unit.

The detection device comprises a camera unit and the annular light source with the adjustable divergence angle, wherein the camera unit is arranged opposite to the inner ring of the annular base.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides an annular light source and detection device with adjustable divergence angle, the light that its light-emitting component sent can shine on the work piece through annular spotlight stick, wherein, annular spotlight stick refracts light in unison, makes the light that the light-emitting component sent disperse with the predetermined angle after refracting; simultaneously, can be through the first annular installation component of turn-knob, under the effect of screw thread, first annular installation component can go up and down for annular base, make the interval between annular spotlight stick and the light emitting component change, after that synchronous adjustment second annular installation component again, ensure that annular spotlight stick is by first annular installation component and second annular installation component butt, thereby change the refraction angle of the light that light emitting component sent, and then change and disperse the angle, match different detection scenes, the commonality of annular light source has been improved, make detection device can be applied to various detection scenes under the prerequisite of not changing the light source.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

Fig. 1 is a schematic view of a first cross-sectional structure of a ring light source with adjustable divergence angle provided by an embodiment of the present invention;

fig. 2 is a schematic top view of an annular light source with adjustable divergence angle according to an embodiment of the present invention;

fig. 3 is a schematic view of a second cross-sectional structure of an annular light source with adjustable divergence angle according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of another ring light source with adjustable divergence angle according to an embodiment of the present invention.

Illustration of the drawings: 10. an annular base; 20. a light emitting element; 21. a light-emitting lamp bead assembly; 22. a control line unit; 30. an annular light-gathering rod; 40. a first annular mounting assembly; 41. a first abutment block; 42. a first arc-shaped abutting surface; 43. a first annular connecting seat; 44. a rotating groove; 50. a second annular mounting assembly; 51. a second butting block; 52. a second arc-shaped abutting surface; 53. positioning the threaded hole; 54. an elastic unit; 60. an annular outer housing; 61. an adjustment groove; 62. a set screw; 63. and installing the boss part.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

Please refer to fig. 1 to 4, fig. 1 is a schematic diagram of a first sectional structure of the ring light source with adjustable divergence angle provided by the embodiment of the present invention, fig. 2 is a schematic diagram of a top view structure of the ring light source with adjustable divergence angle provided by the embodiment of the present invention, fig. 3 is a schematic diagram of a second sectional structure of the ring light source with adjustable divergence angle provided by the embodiment of the present invention, and fig. 4 is a schematic diagram of a sectional structure of another ring light source with adjustable divergence angle provided by the embodiment of the present invention.

Example one

The annular light source with the adjustable divergence angle provided by the embodiment improves the structure of the annular light source, so that the divergence angle of the emitted light is adjustable, various detection scenes are matched, and the annular light source has the advantage of high universality.

As shown in fig. 1 and fig. 2, the annular light source with adjustable divergence angle of the present embodiment includes an annular base 10, a light emitting assembly 20 and an annular light collecting rod 30, which are sequentially disposed, wherein the light emitting assembly 20 is fixedly connected to the annular base 10, and a gap is left between the annular light collecting rod 30 and the light emitting assembly 20; the light emitted by the light emitting assembly 20 can pass through the gap and reach the annular light gathering rod 30, and the annular light gathering rod 30 plays a role in refracting the light, so that the light is diffused to a workpiece at a certain angle, and it is understood that the diffusion angle of the light can be changed along with the change of the distance between the light emitting assembly 20 and the annular light gathering rod 30.

A first annular mounting component 40 is arranged on the inner side of the annular light gathering rod 30, a second annular mounting component 50 is arranged outside the annular light gathering rod 30, and the annular light gathering rod 30 is respectively abutted against the first annular mounting component 40 and the second annular mounting component 50; first annular mounting assembly 40 is threadably coupled to annular base 10 and second annular mounting assembly 50 is capable of being raised and lowered relative to annular base 10. Wherein, because the both sides of annular spotlight stick 30 are all supported by annular installation component, annular spotlight stick 30 can move along with annular installation component jointly.

Specifically, the light emitted from the light emitting element 20 of the annular light source with adjustable divergence angle of the present embodiment can be irradiated on the workpiece through the annular light collecting rod 30, wherein the annular light collecting rod 30 uniformly refracts the light, so that the light emitted from the light emitting element 20 is refracted and then diverged at a preset angle; meanwhile, the first annular mounting assembly 40 can be turned on by a knob, under the action of threads, the first annular mounting assembly 40 can ascend and descend relative to the annular base 10, the distance between the annular light gathering rod 30 and the light emitting assembly 20 is changed, then the position of the second annular mounting assembly 50 is synchronously adjusted, the annular light gathering rod 30 is enabled to be abutted by the first annular mounting assembly 40 and the second annular mounting assembly 50, the refraction angle of light rays emitted by the light emitting assembly 20 is changed, the divergence angle is further changed, different detection scenes can be matched, the universality of the annular light source with the adjustable divergence angle is improved, and the detection device can be applied to various detection scenes on the premise that the light source is not replaced. It should be noted that, the first annular mounting assembly 40 disposed on the inner side is in threaded connection with the annular base 10, so that the position of the first annular mounting assembly 40 can be adjusted in a limited space of the annular light source, and the structure is more compact on the premise of adjusting the divergence angle.

In this embodiment, an annular outer casing 60 is sleeved outside the annular base 10, and the second annular mounting assembly 50 is disposed inside the annular outer casing 60; wherein the second annular mounting assembly 50 is slidable relative to the annular outer housing 60 to press the annular light gathering rod 30 onto the first annular mounting assembly 40. It will be appreciated that the first annular mounting assembly 40 acts as a positive adjustment to adjust the position of the annular wand 30 and the second annular mounting assembly 50 acts as a driven adjustment to ensure that the annular wand 30 abuts the first annular mounting assembly 40; thus, the first annular mounting assembly 40 can be abutted against the lower surface of the annular light gathering rod 30, and the second annular mounting assembly 50 can be abutted against the upper surface of the annular light gathering rod 30; it should be added that the annular base 10 can be fixedly connected with the annular outer casing 60 by means of glue or interference fit.

In one particular embodiment, as shown in fig. 1-3, the second ring mount assembly 50 includes a second abutment block 51; the second abutting block 51 abuts against the annular light gathering rod 30 on the side facing the annular light gathering rod 30; a positioning threaded hole 53 is formed in the other side of the second abutting block 51, an adjusting groove 61 is formed in the position, corresponding to the positioning threaded hole 53, of the annular outer shell 60, and the groove length direction of the adjusting groove 61 is parallel to the lifting direction of the second annular mounting assembly 50; the positioning screw hole 53 is connected with a positioning screw 62, the thread of the positioning screw 62 passes through the adjusting groove 61 and is in threaded connection with the positioning screw hole 53, and the nut part of the positioning screw 62 is abutted against the annular outer shell 60.

For example, when the annular light gathering rod 30 needs to be adjusted, the set screw 62 may be unscrewed, the first annular mounting assembly 40 is rotated, the second abutting block 51 is manually pressed after the first annular mounting assembly 40 is rotated, two sides of the annular light gathering rod 30 are ensured to be pressed, and finally, the set screw 62 is tightened to complete the adjustment.

In another specific embodiment, as shown in fig. 4, the second annular mounting assembly 50 includes a second abutting block 51 and an elastic unit 54, wherein the side of the second abutting block 51 facing the annular light gathering rod 30 abuts against the annular light gathering rod 30; the annular outer housing 60 is provided with a mounting boss portion 63 protruding inward away from the annular base 10, one end of the elastic unit 54 abuts against the mounting boss portion 63, and the other end of the elastic unit 54 abuts against the second abutting block 51. For example, when the annular light gathering rod 30 needs to be adjusted, the set screw 62 may be unscrewed, and then the first annular mounting assembly 40 is rotated, while the first annular mounting assembly 40 and the annular light gathering rod 30 move, the elastic unit 54 releases or absorbs elastic potential energy, and acts on the second abutting block 51 through elasticity, so as to ensure that both sides of the annular light gathering rod 30 are pressed, and improve the adjustment accuracy.

In this embodiment, the elastic unit 54 is a spring, and when the spring is selected, a positioning column may be protruded at the mounting boss portion 63, so that the spring is sleeved outside the positioning column. In other alternative embodiments, the elastic element 54 may be another elastic element, such as a silicone rubber block.

In addition to the above embodiment, as shown in fig. 3 and 4, the second abutting block 51 has a second arc abutting surface 52 formed on a side facing the annular light collecting rod 30, and the second arc abutting surface 52 abuts against the annular light collecting rod 30.

Further, the first annular mounting assembly 40 includes a first abutting block 41 and a first annular connecting seat 43 which are integrally formed; the first annular connecting base 43 is screwed with the annular base 10, and a first arc-shaped abutting surface 42 is formed on one side of the first annular connecting base 43 facing the annular light gathering rod 30. Through forming arc butt face at the butt piece, can make the contact of butt piece and annular spotlight stick 30 more level and smooth for when adjusting the position of annular spotlight stick 30, the motion is more level and smooth stable.

Further, as shown in fig. 1, a rotation groove 44 is formed on an end surface of the first abutting block 41 away from the annular base 10. Through the arrangement of the rotating groove 44, the first annular mounting assembly 40 can be rotated conveniently by workers, and the operation is more convenient.

Further, as shown in fig. 2, the light emitting assembly 20 includes a plurality of light emitting bead assemblies 21 distributed along the circumference, the light emitting bead assemblies 21 include a plurality of LED beads, and the light emitting bead assemblies 21 are electrically connected to the control line unit 22. In this embodiment, luminous lamp pearl subassembly 21's quantity is four groups, and the staff can light the luminous lamp pearl subassembly 21 of specified area as required to match the detection demand of different work pieces, adopt annular spotlight stick 30 simultaneously, need not consider the interval between two adjacent lenses, make the interval between each LED lamp pearl unrestricted, arrange more in a flexible way, improved this annular light source's general use.

To sum up, the annular light source of divergence angle adjustable that this embodiment provided can satisfy different detection demands, possesses the advantage that general usefulness is strong, still possesses compact structure, convenient operation, adjusts advantages such as level and smooth stable.

Example two

The detection device of the embodiment comprises a camera unit and the annular light source with adjustable divergence angle in the first embodiment, wherein the camera unit is arranged opposite to the inner ring of the annular base 10; in the detection process, the workpiece, the annular light source and the camera unit are arranged in sequence from bottom to top, namely the camera unit can penetrate through the inner ring of the annular base 10, so that the surface information of the workpiece on the other side of the annular light source is obtained. The first embodiment describes a specific structure and technical effects of the annular light source with adjustable divergence angle, and the detection device of the first embodiment uses the structure and has the technical effects as well.

In conclusion, the detection device of the embodiment can meet different detection requirements, has the advantage of strong universality, and also has the advantages of compact structure, convenience in operation, smoothness and stability in adjustment and the like.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The annular light source with the adjustable divergence angle is characterized by comprising an annular base (10), a light-emitting component (20) and an annular light-gathering rod (30), wherein the annular base (10), the light-emitting component (20) and the annular light-gathering rod (30) are sequentially arranged, the light-emitting component (20) is fixedly connected to the annular base (10), and a gap is reserved between the annular light-gathering rod (30) and the light-emitting component (20);

a first annular mounting component (40) is arranged on the inner side of the annular light gathering rod (30), a second annular mounting component (50) is arranged outside the annular light gathering rod (30), and the annular light gathering rod (30) is respectively abutted against the first annular mounting component (40) and the second annular mounting component (50);

the first annular mounting component (40) is in threaded connection with the annular base (10), and the second annular mounting component (50) can lift relative to the annular base (10).

2. The annular light source with adjustable divergence angle according to claim 1, wherein an annular outer shell (60) is sleeved on the outer side of the annular base (10), and the second annular mounting assembly (50) is arranged on the inner side of the annular outer shell (60); wherein the second annular mounting assembly (50) is slidable relative to the annular outer housing (60) to press the annular light gathering rod (30) onto the first annular mounting assembly (40).

3. The ring light source with adjustable divergence angle of claim 2, wherein the second ring mounting assembly (50) comprises a second abutment block (51); the side, facing the annular light gathering rod (30), of the second abutting block (51) abuts against the annular light gathering rod (30);

a positioning threaded hole (53) is formed in the other side of the second abutting block (51), an adjusting groove (61) is formed in the position, corresponding to the positioning threaded hole (53), of the annular outer shell (60), and the groove length direction of the adjusting groove (61) is parallel to the lifting direction of the second annular mounting assembly (50);

positioning screw hole (53) are connected with set screw (62), the screw thread of set screw (62) pass adjustment tank (61) and with positioning screw hole (53) threaded connection, the nut portion of set screw (62) with annular shell body (60) butt.

4. The annular luminaire with adjustable divergence angle according to claim 2, wherein the second annular mounting assembly (50) comprises a second abutting block (51) and an elastic unit (54), and one side of the second abutting block (51) facing the annular light gathering rod (30) abuts against the annular light gathering rod (30);

the annular outer shell (60) is far away from the annular base (10) and is inwards convexly provided with an installation boss part (63), one end of the elastic unit (54) is abutted to the installation boss part (63), and the other end of the elastic unit (54) is abutted to the second abutting block (51).

5. The annular light source with adjustable divergence according to claim 4, wherein the elastic unit (54) is a spring.

6. The annular light source with adjustable divergence angle according to claim 3 or 4, wherein one side of the second abutting block (51) facing the annular light gathering rod (30) is formed with a second arc-shaped abutting surface (52), and the second arc-shaped abutting surface (52) abuts against the annular light gathering rod (30).

7. The annular light source with adjustable divergence angle of claim 2, wherein the first annular mounting assembly (40) comprises a first abutting block (41) and a first annular connecting seat (43) which are integrally formed;

the first annular connecting seat (43) is in threaded connection with the annular base (10), and a first arc-shaped abutting surface (42) is formed on one side, facing the annular light gathering rod (30), of the first annular connecting seat (43).

8. The annular light source with adjustable divergence angle of claim 7, wherein the end surface of the first abutting block (41) far away from the annular base (10) is provided with a rotating groove (44).

9. The annular light source with adjustable divergence angle according to claim 1, wherein the light emitting assembly (20) comprises a plurality of light emitting bead assemblies (21) distributed along a circumference, the light emitting bead assemblies (21) comprise a plurality of LED beads, and the light emitting bead assemblies (21) are electrically connected with a control line unit (22).

10. A detection device, comprising a camera unit and a ring-shaped light source with adjustable divergence angle according to any one of claims 1-9, the camera unit being arranged opposite to the inner ring of the ring-shaped mount (10).