CN217360431U

CN217360431U - Lens module

Info

Publication number: CN217360431U
Application number: CN202221097721.5U
Authority: CN
Inventors: 何彬; 朱骏; 朱建中; 向思桦
Original assignee: Chengdu Yingfeirui Technology Co ltd
Current assignee: Chengdu Yingfeirui Technology Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-09-02
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a lens module, which comprises a mounting bracket and a lens component connected on the mounting bracket, wherein the lens component comprises a first connecting part, and the outer surface of the first connecting part is a convex spherical surface; the installing support includes the second connecting portion, the concave holding tank that forms in the second connecting portion, first connecting portion accept in the holding tank, the cell wall of holding tank be the sphere of indent, with the surface phase-match of first connecting portion, the utility model discloses the lens module can realize the rotation of lens in upper and lower left and right all directions through unsmooth complex sphere, conveniently carries out the angle correction, compensates the error when part tolerance and assembly, promotes the precision of whole optical instrument, simple structure on the whole, convenient operation and easy manufacturing.

Description

Lens module

Technical Field

The utility model relates to an optical instrument technical field especially relates to a lens module.

Background

In an optical instrument, various mirrors are usually used to perform optical path conversion and adjustment, such as collimation guidance of laser and near-field beam adjustment using a mirror, and the machining precision of the mirror and the precision of assembly affect the final imaging quality. Some optical instruments on the market use a frame to adjust the mounting angle of the lenses to compensate for tolerances due to machining and deviations during assembly. However, the existing spectacle frame has the defects of complex structure, high processing difficulty and the like, and needs to be further improved.

Disclosure of Invention

In view of this, a lens module with simple structure and convenient molding is provided.

A lens module comprises a mounting bracket and a lens assembly connected to the mounting bracket, wherein the lens assembly comprises a first connecting part, and the outer surface of the first connecting part is a convex spherical surface; the mounting bracket comprises a second connecting part, the second connecting part is concave to form a containing groove, the first connecting part is contained in the containing groove, and the groove wall of the containing groove is a concave spherical surface and is matched with the outer surface of the first connecting part.

In some embodiments, the fixing device further includes a fixing member connecting the first connecting portion and the second connecting portion, a fixing hole is formed in the center of the first connecting portion, a through hole is formed in the center of the second connecting portion, the through hole is communicated with the accommodating groove, the fixing member passes through the through hole and is inserted into the fixing hole, the diameter of the fixing member is smaller than the diameter of the through hole, and the wall of the fixing member and the wall of the through hole are radially spaced.

In some embodiments, the fixing holes are screw holes, and the fixing members are screws.

In some embodiments, an axis of the fixation hole coincides with a centerline of an outer surface of the first connection portion.

In some embodiments, the side of the second connecting portion facing away from the first connecting portion is a convex spherical surface, and the curvature of the convex spherical surface of the second connecting portion is equivalent to that of the groove wall of the receiving groove.

In some embodiments, a gasket is clamped between the fixing member and the second connecting portion, and a side surface of the gasket facing the second connecting portion is a concave spherical surface and matched with a convex spherical surface of the second connecting portion.

In some embodiments, the height of the spherical cap corresponding to the outer surface of the first connecting portion is greater than the height of the spherical cap corresponding to the groove wall of the accommodating groove of the second connecting portion, and the first connecting portion partially extends out of the accommodating groove.

In some embodiments, the first connecting portion and the second connecting portion are fixed by dispensing.

In some embodiments, the lens assembly includes a lens and a fixing frame for supporting the lens, the first connecting portion is formed on a surface of the fixing frame facing away from the lens, a groove is formed on a surface of the fixing frame facing the lens, and the lens is adhered to the fixing frame by glue filled in the groove.

In some embodiments, the fixing frame includes a base plate and a plurality of blocking pieces extending from edges of the base plate, the lens is superposed on the base plate, and the blocking pieces are disposed around the lens.

Compared with the prior art, the utility model discloses the lens module can realize through unsmooth complex sphere that the lens is in the ascending rotation of all directions about from top to bottom, conveniently carries out the angle correction, compensates the error when part tolerance and assembly, promotes the precision of whole optical instrument, and simple structure on the whole, convenient operation and easy manufacturing.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the lens module of the present invention.

Fig. 2 is a schematic structural view of a mounting bracket of the lens module shown in fig. 1.

Fig. 3 is a cross-sectional view of the lens module shown in fig. 1.

The reference numbers illustrate:

the lens assembly 10, the lens 12, the fixing frame 14, the substrate 16, the groove 160, the baffle 17, the first connecting portion 18, the outer surface 180, and the fixing hole 19;

the mounting bracket 20, the mounting seat 22, the mounting hole 23, the connecting seat 24, the second connecting part 26, the through hole 260, the receiving groove 28 and the groove wall 280;

a fixing member 30;

a spacer 40.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and is not limited to the embodiments described below.

The same or similar reference numbers in the drawings of the utility model correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

The utility model provides a lens module is preferably applied to among the precision optical instrument. Fig. 1-3 illustrate an embodiment of a lens module of the present invention, which includes a lens assembly 10, a mounting bracket 20, and a fixing member 30 connecting the lens assembly 10 and the mounting bracket 20.

The lens assembly 10 includes a lens 12 and a holder 14 for holding the lens 12. in one embodiment, the lens 12 may be a mirror and is conveniently mounted to a mounting bracket 20 via the holder 14. In the illustrated embodiment, the fixture 14 includes a base 16, and the base 16 includes first and second opposing surfaces, with the first surface facing the lens 12 and the second surface facing away from the lens 12. The center of the second surface of the substrate 16 protrudes outward to form a first connection portion 18, the center of the first connection portion 18 forms a fixing hole 19, and the axis of the fixing hole 19 coincides with the center line of the outer surface 180 of the first connection portion 18. The fixing member 30 is inserted into the fixing hole 19 after passing through the mounting bracket 20, and connects the lens assembly 10 to the mounting bracket 20. Preferably, the fixing holes 19 are screw holes, and the fixing members 30 are screws, which are screwed together when assembling. It should be understood that the fixing member 30 may be a pin or the like, and may be fixed with the fixing hole 19 by tight fitting.

The edge of the substrate 16 extends toward the side where the lens 12 is located to form a plurality of blocking pieces 17, and in order to facilitate the assembly and positioning of the lens 12, the blocking pieces 17 are distributed on the lower side and left and right sides of the substrate 16 in the illustrated embodiment. During assembly, the lens 12 can be inserted into the fixing frame 14 from the upper side of the fixing frame 14, at this time, the lens 12 is overlapped on the substrate 16, and the stop piece 17 is enclosed on the outer periphery side of the lens 12 to limit the lens 12, so as to primarily fix the lens 12. In the illustrated embodiment, the lens 12 and the base 16 are square, but in other embodiments, the lens and the base can be designed in any shape, such as circular, etc., as desired. Preferably, the first surface of the substrate 16 is recessed to form a plurality of grooves 160, and a dose of glue is injected into the grooves 160. After the lens 12 is assembled, the glue is cured to bond the lens 12 and the substrate 16 together, thereby increasing the stability of the connection between the lens 12 and the fixing frame 14 and preventing the lens 12 from automatically falling off.

The mounting bracket 20 includes a mounting seat 22 and a connecting seat 24, the mounting seat 22 and the connecting seat 24 are disposed at an angle, such as perpendicular to each other, so that the mounting seat 22 can avoid the optical path of the lens 12. The mounting seat 22 is used for connecting the lens module of the present invention with other devices of an optical instrument, the mounting seat 22 is provided with a plurality of mounting holes 23 in the illustrated embodiment, and pins, screws, etc. are passed through the mounting holes 23 to fix the mounting bracket 20 with other devices. The connecting base 24 is used for mounting the lens assembly 10, and in the illustrated embodiment, the connecting base 24 is formed with a second connecting portion 26, and a through hole 260 is formed at the center of the second connecting portion 26 for the fixing member 30 to pass through. The axis of the through hole 260 coincides with the center line of the second connecting portion 26, the aperture of the through hole 260 is much larger than the outer diameter of the fixing member 30, and the fixing member 30 and the hole wall of the through hole 260 are spaced apart in the radial direction so that the fixing member 30 can swing in the through hole 260, so that the lens assembly 10 can rotate relative to the connecting seat 24.

In this embodiment, the second connecting portion 26 includes first and second opposing sides, wherein the first side faces the lens assembly 10 and the second side faces away from the lens assembly 10. The central depression of the first side forms a receiving groove 28 for receiving the first connecting portion 18. Preferably, the receiving groove 28 is in the shape of a spherical cap, and the groove wall 280 thereof is in the shape of an inwardly concave spherical surface; the first connecting portion 18 is in the shape of a spherical cap, and the outer surface 180 thereof is a convex spherical surface, and the two spherical surfaces are concave-convex to form a rotatable connection, so that the lens assembly 10 can rotate in any direction relative to the mounting bracket 20 to correct the angle of the lens 12. In the illustrated embodiment, the curvature of the outer surface 180 of the first connecting portion 18 is the same as the curvature of the groove wall 280 of the receiving groove 28, and the outer surface 180 of the first connecting portion 18 overlaps the groove wall 280 when the first connecting portion is inserted into the receiving groove 28, so as to avoid the occurrence of gaps due to different curvatures.

As shown in fig. 3, the height of the spherical cap corresponding to the receiving groove 28 is H1, and the height of the spherical cap corresponding to the first connecting portion 18 is H2, wherein H2> H1. After the first connecting portion 18 is assembled with the second connecting portion 26, the first connecting portion is partially inserted into the receiving groove 28 and partially protrudes out of the receiving groove 28, so that the substrate 16 is spaced apart from the connecting seat 24, and the interference between the lens assembly 10 and the connecting seat 24 during the rotation process relative to the connecting seat 24 is avoided, thereby preventing the angle correction of the lens 12 from being affected. The receiving groove 28 is preferably coaxially disposed with the through hole 260 and is communicated with the through hole, the diameter of the through hole 260 is smaller than the diameter of the spherical cap corresponding to the receiving groove 28, the two are intersected in the inside of the second connecting portion 26, and the fixing member 30 is inserted into the fixing hole 19 of the first connecting portion 18 after sequentially passing through the through hole 260 of the second connecting portion 26 and the receiving groove 28.

Preferably, a gasket 40 is disposed between the mounting bracket 20 and the fixing member 30, and the gasket 40 is preferably made of an abrasion-resistant material, sleeved on the rod body of the fixing member 30 and sandwiched between the head end of the fixing member 30 and the second side surface of the second connecting portion 26. The inner diameter of the spacer 40 is slightly larger than the diameter of the rod body of the fixing member 30, so that the rod body can pass through and a certain moving space can be provided; the gasket 40 has an outer diameter larger than the diameter of the through hole 260 of the second connection portion 26, and may completely cover the through hole 260 and cover a portion of the second side located at the edge of the through hole 260. Preferably, the second side surface of the second connecting portion 26 is a convex spherical surface, and one side of the pad 40 facing the second side surface is a concave spherical surface, and the curvatures of the two are the same, so that the second connecting portion 26 and the pad 40 can be tightly matched and relatively rotated, which further facilitates the angle adjustment of the lens 12, and after the angle adjustment, the axis of the fixing member 30 and the center line of the outer surface 180 of the first connecting portion 18 are still kept in a coincident state, and the fixing member 30 does not swing in the fixing hole 19, so that the force applied to the fixing member 30 is balanced and does not break.

When the lens module of the present invention is assembled, the mounting bracket 20 is first fixedly connected to the relevant device of the optical instrument, and then the lens module 10 is primarily connected to the mounting bracket 20 through the fixing member 30; alternatively, the lens assembly 10 may be initially attached to the mounting bracket 20 by the fasteners 30, and then the mounting bracket 20 may be fixedly attached to the associated device of the optical instrument. When the lens assembly 10 is initially attached to the mounting bracket 20, the fixing member 30 is not screwed to the fixing hole 19, and a space is left between the first connecting portion 18 of the lens assembly 10 and the second connecting portion 26 of the mounting bracket 20, so that the lens assembly 10 and the mounting bracket 20 can rotate relative to each other, and the angle of the lens 12 is adjusted to be aligned with other devices of the optical instrument. Because the first connecting part 18 and the second connecting part 26 are matched by concave-convex spherical surfaces, the pitching and left-right angle adjustment and correction of the lens 12 can be conveniently realized.

The angle correction of the lens 12 is preferably performed automatically, for example, the position, angle, etc. of the lens 12 in the optical instrument can be sensed by a sensor, the controller calculates the position deviation of the lens 12 according to the information of the sensor and generates a corresponding signal to a driver, such as a stepping motor, etc., to drive the lens 12 to rotate in the left-right and/or up-down directions, so as to realize the omnibearing correction of the angle of the lens 12, compensate the tolerance caused by machining and the deviation caused in the assembling process. After the lens 12 is angularly adjusted, the fixing member 30 is further tightened to form a tight fit between the first connecting portion 18 of the lens assembly 10 and the second connecting portion 26 of the mounting bracket 20, so as to fix the angle of the lens assembly 10. In some embodiments, the first connecting portion 18 and the second connecting portion 26 may be adhesively fixed by glue or the like, so that the lens assembly 10 can be maintained at the corrected angle during the subsequent use.

The lens module of the utility model is provided with the matched spherical structures on the lens component 10 and the mounting bracket 20, and the two are matched in a concave-convex way to realize relative rotation in the up-down, left-right and other directions; simultaneously, mounting 30 and perforation 260 form the size deviation on the diameter and the required space of mounting 30 swing along with it when reserving lens subassembly 10 and rotating, conveniently carry out the angle correction of lens 12, compensate error when part tolerance and assembly, make the utility model discloses the lens module can conveniently carry out the angle correction of lens 12 when assembling to optical instrument inside, can play effects such as collimation guide, near field adjustment to the light beam after the assembly, promotes the precision of whole optical instrument. The utility model discloses the precision requirement of lens module to product itself is not high, compensates product tolerance and installation error through angle correction at the in-process that follow-up installation was used, and simple structure on the whole, convenient operation and easy production are made, can widely popularize.

In the above embodiment, the lens assembly 10 and the fixing member 30 are always stably connected to each other by the fixing member 30 connecting the lens assembly 10 and the mounting bracket 20 during the assembling process. In some embodiments, the lens assembly 10 and the mounting bracket 20 may be assembled in other ways, for example, the fixing member 30 may be omitted and fixed by gluing, welding, etc. after the two are adjusted in place; alternatively, the lens assembly 10 and the mounting bracket 20 may be designed to be a damped fit, which automatically secures them by frictional resistance after they are adjusted in place; alternatively, the lens assembly 10 and the mounting bracket 20 may be designed with protrusions and recesses that mate with each other, and the two may be fixed in place by a male-female fit. In addition, the spherical arrangement of the mounting bracket 20 and the gasket 40 is also convenient for the deflection of the fixing member 30 and the balance of the stress after the deflection, and can be adjusted according to the requirement in some embodiments; the provision of the shim 40 may also serve to reduce wear.

It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A lens module is characterized by comprising a mounting bracket (20) and a lens assembly (10) connected to the mounting bracket (20), wherein the lens assembly (10) comprises a first connecting part (18), and the outer surface (180) of the first connecting part (18) is a convex spherical surface; the mounting bracket (20) comprises a second connecting part (26), the second connecting part (26) is recessed to form a containing groove (28), the first connecting part (18) is contained in the containing groove (28), and the groove wall of the containing groove (28) is a recessed spherical surface and is matched with the outer surface (180) of the first connecting part (18).

2. The lens module according to claim 1, further comprising a fixing member (30) connecting the first connecting portion (18) and the second connecting portion (26), wherein a fixing hole (19) is formed at the center of the first connecting portion (18), a through hole (260) is formed at the center of the second connecting portion (26), the through hole (260) is communicated with the receiving groove (28), the fixing member (30) passes through the through hole (260) and is inserted into the fixing hole (19), the diameter of the fixing member (30) is smaller than the diameter of the through hole (260), and the hole walls of the fixing member (30) and the through hole (260) are spaced apart in the radial direction.

3. The lens module according to claim 2, wherein the fixing holes (19) are screw holes and the fixing members (30) are screws.

4. The lens module according to claim 2, characterized in that the axis of the fixing hole (19) coincides with the centre line of the outer surface (180) of the first connection portion (18).

5. The lens module according to claim 2, characterized in that the side of the second connecting portion (26) facing away from the first connecting portion (18) is a convex spherical surface, the curvature of the convex spherical surface of the second connecting portion (26) corresponding to the curvature of the groove wall of the receiving groove (28).

6. The lens module according to claim 5, wherein a spacer (40) is interposed between the fixing member (30) and the second connecting portion (26), and a side surface of the spacer (40) facing the second connecting portion (26) is a concave spherical surface and matches with a convex spherical surface of the second connecting portion (26).

7. The lens module according to claim 1, wherein the outer surface of the first connecting portion (18) has a spherical crown height greater than a spherical crown height of a groove wall of the receiving groove (28) of the second connecting portion (26), and the first connecting portion (18) partially protrudes out of the receiving groove (28).

8. The lens module according to claim 1, wherein the first connecting portion (18) and the second connecting portion (26) are fixed by dispensing.

9. The lens module according to any one of claims 1 to 8, wherein the lens assembly (10) comprises a lens (12) and a holder (14) for holding the lens (12), the first connecting portion (18) is formed on a surface of the holder (14) facing away from the lens (12), a groove (160) is formed on a surface of the holder (14) facing the lens (12), and the lens (12) is adhered by glue filled in the groove (160).

10. The lens module according to claim 9, wherein the holder (14) comprises a base plate (16) and a plurality of flaps (17) extending from an edge of the base plate (16), the lens (12) being superimposed on the base plate (16), the flaps (17) being arranged around the lens (12).