CN214795437U

CN214795437U - Annular optical lens

Info

Publication number: CN214795437U
Application number: CN202120212260.0U
Authority: CN
Inventors: 郝小雷
Original assignee: Wuhan Leiying Laser Technology Co ltd
Current assignee: Wuhan Leiying Laser Technology Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-19
Anticipated expiration: 2031-01-26

Abstract

The utility model provides an annular optical lens, including the lens cone, the coaxial first lens that has set gradually along the incident direction of light in the lens cone, the second lens, the third lens, the fourth lens, the first lens is plano-convex lens, the plane of first lens is the light incident surface, the convex surface of first lens is the light exit surface, the second lens is biconvex lens, the third lens is plano-convex lens, the convex surface of third lens is the light incident surface, the plane of third lens is the light exit surface, the fourth lens is light cone lens, the light incident surface of fourth lens is the plane, and this planar middle part is provided with the conical surface, the conical surface contacts with the plane of third lens, the light exit surface of fourth lens is the plane, one side of the light exit surface of fourth lens is provided with the protection lens piece, evenly be provided with a plurality of annular fin on the outer wall of lens cone. The design can form an annular light spot, and has long service life and good heat dissipation effect.

Description

Annular optical lens

Technical Field

The utility model relates to a soldering technical field especially relates to an annular light camera lens, mainly is applicable to and changes into annular facula with laser.

Background

Semiconductor lasers are increasingly used in industrial fields, and laser spots of different quality and shape are required in different applications, so that an optical lens for a laser light source plays a crucial role. The light spots formed by the general optical lens are solid circular light spots, and when a pin in the middle cannot be heated according to the technical requirements of products in the process of welding some pin pieces, the conventional optical lens cannot solve the process problems. If the laser is changed into the annular light spot, the middle part of the laser can be ensured to be free from the laser, the middle pin can be ingeniously avoided, and the energy around the pin can achieve the purpose of laser soldering welding.

Disclosure of Invention

The utility model aims at overcoming the defect and the problem that can't form the annular facula that exist among the prior art, provide an annular light camera lens that can form the annular facula.

In order to achieve the above purpose, the technical solution of the utility model is that: an annular optical lens comprises a lens cone, one end of the lens cone is a light incidence end, the other end of the lens cone is a light emergent end, a first lens, a second lens, a third lens and a fourth lens are coaxially arranged in the lens cone along the incident direction of the light ray in sequence, the first lens is a plano-convex lens, the plane of the first lens is a light incident plane, the convex surface of the first lens is a light emergent plane, the second lens is a biconvex lens, one convex surface of the second lens is a light incident surface, the other convex surface of the second lens is a light emergent surface, the third lens is a plano-convex lens, the convex surface of the third lens is a light incident surface, the plane of the third lens is a light emergent surface, the fourth lens is a light cone lens, the light incident surface of the fourth lens is a plane, and the middle part of the plane is provided with a conical surface, the conical surface is contacted with the plane of the third lens, and the light emergent surface of the fourth lens is a plane.

The annular optical lens further comprises a protective lens, and the protective lens is positioned on one side of the light emergent surface of the fourth lens.

The terminal surface of light outgoing end has been seted up a light trap, and this end is provided with the mount pad No. one, the mount pad is cylindrical structure, the step hole has been seted up to a terminal surface of mount pad, and the step hole includes big diameter hole and minor diameter hole, another terminal surface of mount pad set up with the communicating No. two light traps in minor diameter hole, the outer wall of light outgoing end is laminated with the inner wall in big diameter hole mutually, a light trap communicates with each other with the minor diameter hole, the outer wall of protection lens is laminated with the inner wall in minor diameter hole mutually.

The optical fiber lens is characterized in that the light incidence end is provided with a second mounting seat which is of a T-shaped structure, the outer wall of the transverse part of the second mounting seat is attached to the inner wall of the light incidence end, the vertical part of the second mounting seat is positioned outside the lens barrel, and the middle of the second mounting seat is provided with an optical fiber insertion hole.

A plurality of annular cooling fins are uniformly arranged on the outer wall of the lens barrel from the light incidence end to the light emergence end.

And cutting surfaces are arranged on the outer walls of the annular radiating fins positioned at the two ends of the lens cone.

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

1. the utility model relates to an annular optical lens, wherein a first lens, a second lens, a third lens and a fourth lens are coaxially arranged in a lens cone along the incident direction of light rays in sequence, the first lens is a plano-convex lens, the second lens is a biconvex lens, the third lens is a plano-convex lens, and the fourth lens is a cone lens; after the laser sequentially passes through the first lens, the second lens and the third lens, the divergent light forms focused light, and the focused light forms an annular light spot after passing through the fourth lens. Therefore, the utility model discloses can form annular facula.

2. The utility model relates to an annular optical lens, wherein a protective lens is arranged at one side of the light emergent surface of a fourth lens to prevent dust generated by welding from polluting lenses in a lens cone; the step hole has been seted up to the terminal surface of mount pad, and the step hole includes big diameter hole and minor diameter hole, and the outer wall of light outgoing end is laminated mutually with the inner wall in big diameter hole, and the outer wall of protection lens is laminated mutually with the inner wall in minor diameter hole, and the installation and the dismantlement of protection lens are simple and convenient for above-mentioned design. Therefore, the utility model discloses long service life, installation and dismantlement are simple and convenient.

3. The utility model relates to a No. two mount pads are T style of calligraphy structure in the annular optical lens, and the outer wall of the horizontal portion of No. two mount pads is laminated mutually with the inner wall of light incident end, and the vertical position of No. two mount pads is outside the lens barrel, and the optic fibre inserted hole has been seted up at the middle part of No. two mount pads, and No. two mount pads of above-mentioned structure, not only simple structure, installation and dismantlement are simple and convenient, the installation of the optic fibre of being convenient for moreover. Therefore, the utility model discloses simple structure, installation and dismantlement are simple and convenient, convenient to use.

4. The annular optical lens of the utility model is uniformly provided with a plurality of annular radiating fins from the light incidence end to the light emergence end on the outer wall of the lens cone, thus improving the radiating effect of the annular optical lens; the outer walls of the annular radiating fins at the two ends of the lens barrel are provided with cutting surfaces, so that the annular optical lens is simple and convenient to mount. Therefore, the utility model discloses the radiating effect is good, the simple installation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a sectional view taken along the direction C-C of fig. 2.

Fig. 4 is a schematic view of an arrangement structure of the first lens, the second lens, the third lens, the fourth lens and the protective lens in fig. 3.

In the figure: the lens barrel comprises a lens barrel 1, a light incidence end 11, a light emergence end 12, a first light transmission hole 121, an annular cooling fin 13, a cutting surface 131, a first lens 2, a second lens 3, a third lens 4, a fourth lens 5, a conical surface 51, a protective lens 6, a first mounting seat 7, a second light transmission hole 71, a second mounting seat 8, a transverse part 81, a vertical part 82, an optical fiber insertion hole 83 and an annular light spot 9.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 4, an annular optical lens includes a lens barrel 1, one end of the lens barrel 1 is a light incident end 11, the other end of the lens barrel 1 is a light emitting end 12, a first lens 2, a second lens 3, a third lens 4 and a fourth lens 5 are coaxially disposed in the lens barrel 1 along an incident direction of light, the first lens 2 is a plano-convex lens, a plane of the first lens 2 is a light incident plane, a convex surface of the first lens 2 is a light emitting plane, the second lens 3 is a biconvex lens, a convex surface of the second lens 3 is a light incident plane, another convex surface of the second lens 3 is a light emitting plane, the third lens 4 is a plano-convex lens, a convex surface of the third lens 4 is a light incident plane, a plane of the third lens 4 is a light emitting plane, the fourth lens 5 is a cone lens, a light incident plane of the fourth lens 5 is a plane, and a middle portion of the plane is provided with a conical surface 51, the conical surface 51 is in contact with the plane surface of the third lens 4, and the light emitting surface of the fourth lens 5 is a plane surface.

The annular optical lens further comprises a protective lens 6, and the protective lens 6 is positioned on one side of the light emitting surface of the fourth lens 5.

No. one light trap 121 has been seted up to the terminal surface of light outgoing end 12, and this end is provided with mount pad 7, mount pad 7 is cylindrical structure, the step hole has been seted up to a terminal surface of mount pad 7, and the step hole includes big diameter hole and minor diameter hole, another terminal surface of mount pad 7 seted up with the communicating No. two light traps 71 in minor diameter hole, the outer wall of light outgoing end 12 is laminated with the inner wall in big diameter hole mutually, a light trap 121 communicates with the minor diameter hole mutually, the outer wall of protection lens 6 is laminated with the inner wall in minor diameter hole mutually.

The light incident end 11 is provided with a second mounting seat 8, the second mounting seat 8 is of a T-shaped structure, the outer wall of the transverse portion 81 of the second mounting seat 8 is attached to the inner wall of the light incident end 11, the vertical portion 82 of the second mounting seat 8 is located outside the lens barrel 1, and the middle of the second mounting seat 8 is provided with an optical fiber insertion hole 83.

A plurality of annular cooling fins 13 are uniformly arranged on the outer wall of the lens barrel 1 from the light incident end 11 to the light emergent end 12.

The outer walls of the annular heat dissipating fins 13 located at both ends of the lens barrel 1 among the plurality of annular heat dissipating fins 13 are provided with cut surfaces 131.

The principle of the utility model is explained as follows:

this design is an annular light camera lens for laser welding, has not only solved pin needle welding difficult problem, and the annular facula diameter size of camera lens can be adjusted moreover, and the focus also can change, can adapt to a lot of welding products not of uniform size, has increased the pluralism of laser trade laser facula, has changed the single form of laser facula. Meanwhile, the lens has high transmittance, and the outer wall of the lens barrel is subjected to heat dissipation treatment, so that the scalding phenomenon cannot be generated.

The focal length of the lens is preferably 100mm in the design; the diameter of the first lens and the third lens is 25.4mm, the focal length is 100mm, and the first lens and the third lens are made of K9 material; the diameter of the second lens is 25.4mm, the focal length is 100mm, and the second lens is made of K9 material; the diameter of the fourth lens is 25.4mm, the vertex angle of the conical surface is 170 degrees, and the fourth lens is made of fused quartz materials; the diameter of the protective lens is 25.4mm, and the protective lens is made of K9 material; referring to fig. 4, the distance between the first lens and the second lens is 4mm, the distance between the second lens and the third lens is 4mm, the distance between the third lens and the fourth lens is 1mm, and the distance between the fourth lens and the protective lens is 1 mm.

Example 1:

Example 2:

the basic contents are the same as example 1, except that:

referring to fig. 1, 3 and 4, the annular optical lens further includes a protective lens 6, and the protective lens 6 is located on one side of the light emitting surface of the fourth lens 5; no. one light trap 121 has been seted up to the terminal surface of light outgoing end 12, and this end is provided with mount pad 7, mount pad 7 is cylindrical structure, the step hole has been seted up to a terminal surface of mount pad 7, and the step hole includes big diameter hole and minor diameter hole, another terminal surface of mount pad 7 seted up with the communicating No. two light traps 71 in minor diameter hole, the outer wall of light outgoing end 12 is laminated with the inner wall in big diameter hole mutually, a light trap 121 communicates with the minor diameter hole mutually, the outer wall of protection lens 6 is laminated with the inner wall in minor diameter hole mutually.

Example 3:

the basic contents are the same as example 1, except that:

referring to fig. 1 to 3, the light incident end 11 is provided with a second mounting seat 8, the second mounting seat 8 is of a T-shaped structure, an outer wall of a transverse portion 81 of the second mounting seat 8 is attached to an inner wall of the light incident end 11, a vertical portion 82 of the second mounting seat 8 is located outside the lens barrel 1, and an optical fiber insertion opening 83 is formed in the middle of the second mounting seat 8.

Example 4:

the basic contents are the same as example 1, except that:

referring to fig. 1 to 3, a plurality of annular cooling fins 13 are uniformly arranged on the outer wall of the lens barrel 1 from the light incident end 11 to the light emitting end 12; the outer walls of the annular heat dissipating fins 13 located at both ends of the lens barrel 1 among the plurality of annular heat dissipating fins 13 are provided with cut surfaces 131.

Claims

1. The utility model provides an annular optical lens, its characterized in that, includes lens cone (1), the one end of lens cone (1) is light incident end (11), and the other end of lens cone (1) is light exit end (12), along the incident direction of light coaxial first lens (2), second lens (3), third lens (4), fourth lens (5) have been set gradually in lens cone (1), first lens (2) are plano-convex lens, and the plane of first lens (2) is the light incident surface, and the convex surface of first lens (2) is the light exit surface, second lens (3) are biconvex lens, and a convex surface of second lens (3) is the light incident surface, and another convex surface of second lens (3) is the light exit surface, third lens (4) are plano-convex lens, and the convex surface of third lens (4) is the light incident surface, and the plane of third lens (4) is the light exit surface, the fourth lens (5) is a light cone lens, the light incidence surface of the fourth lens (5) is a plane, the middle of the plane is provided with a conical surface (51), the conical surface (51) is in contact with the plane of the third lens (4), and the light emergent surface of the fourth lens (5) is a plane.

2. The annular optical lens according to claim 1, wherein: the annular optical lens further comprises a protective lens (6), and the protective lens (6) is positioned on one side of the light emergent surface of the fourth lens (5).

3. The annular optical lens according to claim 2, wherein: light trap (121) have been seted up to the terminal surface of light outgoing end (12), and this end is provided with mount pad (7) No. one, mount pad (7) are cylindrical structure, the step hole has been seted up to a terminal surface of mount pad (7), and the step hole includes big diameter hole and minor diameter hole, another terminal surface of mount pad (7) set up with communicating No. two light traps (71) in minor diameter hole, the outer wall of light outgoing end (12) is laminated with the inner wall in big diameter hole mutually, light trap (121) communicate with each other with the minor diameter hole, the outer wall of protection lens (6) is laminated with the inner wall in minor diameter hole mutually.

4. The annular optical lens according to claim 1, wherein: light incident end (11) are provided with mount pad (8) No. two, mount pad (8) No. two are T style of calligraphy structure, and the outer wall of the horizontal portion (81) of mount pad (8) is laminated mutually with the inner wall of light incident end (11), and vertical portion (82) of mount pad No. two (8) are located outside lens cone (1), and optical fiber inserted hole (83) have been seted up at the middle part of mount pad No. two (8).

5. The annular optical lens according to claim 1, wherein: a plurality of annular cooling fins (13) are uniformly arranged on the outer wall of the lens barrel (1) from the light incidence end (11) to the light emergence end (12).

6. The annular optical lens according to claim 5, wherein: the outer walls of the annular radiating fins (13) positioned at the two ends of the lens barrel (1) in the plurality of annular radiating fins (13) are provided with cutting surfaces (131).