CN215264184U

CN215264184U - Lens fixing device

Info

Publication number: CN215264184U
Application number: CN202120508854.6U
Authority: CN
Inventors: 卢琳; 刘立涛; 李琪强; 刘智
Original assignee: Shanghai Bosi Automation Technology Co ltd
Current assignee: Shanghai Bosi Automation Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-12-21
Anticipated expiration: 2031-03-10

Abstract

The utility model belongs to the technical field of the installation of optical lens piece, concretely relates to lens fixing device, including base, a plurality of adjustment ball and elastic component. The base is annular and comprises a first mounting step and a plurality of ball holes, and the first mounting step is arranged on the first inner wall of the base and used for supporting the lens; the ball holes are uniformly arranged on the base at intervals along the circumferential direction of the base, and penetrate through the first inner wall; the adjusting ball is clamped in the ball hole and can be abutted against the edge of the upper bottom surface of the lens; the elastic piece is clamped on the base and abutted against the adjusting ball, and the elastic piece is configured to apply pressure to the adjusting ball. The utility model discloses a lens fixing device, the elastic component is through the adjustment ball that evenly sets up at the circumferencial direction applys the same effort of size to the lens and realizes the self-centering adjustment and the fixed of lens, has effectively guaranteed the axiality of lens and light beam, and lens dismouting process can not produce the friction dust, simple structure, clean, and the installation is firm.

Description

Lens fixing device

Technical Field

The utility model relates to an optical lens piece installation technical field especially relates to a lens fixing device.

Background

With the gradual deepening of the exploration of people on the optical field, more and more optical devices are applied to industrial production, such as laser cutting machines, photoetching machines and the like. In optical production equipment, various lenses are often added to change a light beam propagation path according to the physical characteristics of light so as to meet various requirements, and the purpose of industrial production is further realized by utilizing light beam energy. However, the conventional lens fixing method usually includes a threaded connection, a rotation structure and the like, and these structures often cause lens pollution due to dust generated by friction in the process of assembling and disassembling the lens, so that the light beam energy distribution condition is influenced, and finally, the optical instrument and equipment cannot be normally used. In addition, the coaxiality of the lens and the light beam is difficult to guarantee in the conventional lens fixing mode, so that the actual light beam center is directly deviated from the theoretical light beam center, the processing precision of equipment is seriously influenced, even potential safety hazards appear, and great economic loss is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lens fixing device can guarantee the axiality of lens and light beam, realizes the self-centering adjustment of lens, does not produce the friction dust again at the installation of lens and adjustment in-process to simple structure, installation are firm.

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

a lens holding device comprising:

a base, the base is annular, includes:

the first mounting step is arranged on the first inner wall of the base and is used for supporting a lens;

the ball holes are uniformly arranged on the base at intervals along the circumferential direction of the base, and penetrate through the first inner wall;

the adjusting balls are clamped in the ball holes and can abut against the edges of the upper bottom surfaces of the lenses; and

the elastic piece is clamped on the base and abutted against the adjusting ball, and the elastic piece is configured to apply pressure to the adjusting ball.

As a preferred structure of the present invention, the base further includes a first fixing groove, the first fixing groove is annularly disposed on the first outer wall of the base and extends along the circumferential direction of the first outer wall; the elastic piece is clamped in the first fixing groove and surrounds the first fixing groove.

As a preferred structure of the utility model, still include the tighrening ring, the tighrening ring cover is located on the first outer wall, and the butt the elastic component.

As a preferred structure of the present invention, the fastening ring includes a second fixing groove, the second fixing groove is formed in the inner wall of the fastening ring, the second fixing groove corresponds to the first fixing groove, and the second fixing groove is used for the joint with the elastic member.

As a preferred structure of the present invention, the fastening ring further includes a guide portion, the guide portion being disposed at an inner wall end portion of the fastening ring.

As a preferred structure of the utility model, the base still includes second installation step, second installation step set up in on the first outer wall, second installation step butt the terminal surface of tighrening ring.

As a preferred structure of the utility model, the ball hole is provided with the retaining ring, the retaining ring connect in on the first inner wall, the aperture of retaining ring is less than the diameter of adjustment ball.

As an optimized structure of the utility model, still include a plurality of plunger shells, the plunger shell set up in the bulb hole, the elastic component with the adjustment ball joint in the plunger shell.

As a preferred structure of the utility model, the plunger shell includes the boss, be provided with the backstop recess on the first inner wall, the boss joint the backstop recess.

As a preferred structure of the present invention, the lower spherical surface of the adjustment ball abuts against the side line of the upper bottom surface of the lens.

The utility model has the advantages that: the utility model provides a lens fixing device is provided with a plurality of adjustment balls and the elastic component of suit outside the adjustment ball along circumference interval evenly distributed on the base, when the lens was placed on the first installation step of base inner wall, the elastic component applied the pressure that the size equals through self elasticity to a plurality of adjustment balls, the limit of the last bottom surface of a plurality of adjustment balls inward movement extrusion lens simultaneously. Because the adjustment ball is the same along circumference equipartition and the effort size of exerting on the lens, the event can make the lens realize radially from the centering, has effectively guaranteed the axiality of lens and light beam, and the adjustment ball is simultaneously with the lens crimping in the first step in the base on in addition, realizes axial fixity. The adjustment and the installation process of the lens have no obvious friction, the lens cannot be polluted by dust, and the lens is clean, simple in structure, stable and reliable.

Drawings

Fig. 1 is a schematic structural view of a lens fixing device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a lens fixing device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a base according to a first embodiment of the present invention;

fig. 4 is a structural sectional view of a base according to an embodiment of the present invention;

FIG. 5 is an enlarged partial schematic view of portion A of FIG. 4;

fig. 6 is a cross-sectional view of a fastening ring according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of a lens fixing device according to a second embodiment of the present invention;

fig. 8 is a cross-sectional view of a lens fixing device according to a third embodiment of the present invention;

fig. 9 is a sectional view of a lens fixing device according to a fourth embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base according to a fourth embodiment of the present invention.

In the figure:

1. a base; 11. a first mounting step; 111. a fixed surface; 12. a first inner wall; 121. a stopper groove; 13. a first fixing groove; 14. a ball hole; 141. a retainer ring; 15. a second mounting step; 16. a first outer wall; 17. a plunger housing; 171. a boss;

2. adjusting the ball;

3. an elastic member;

4. a fastening ring; 41. a second fixing groove; 42. a guide section;

100. a lens; 101. an upper bottom surface; 102. a lower bottom surface.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not 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 thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1 to 6, an embodiment of the present invention provides a lens fixing device, which includes a base 1, a plurality of adjusting balls 2, and an elastic member 3. The base 1 is annular and comprises a first mounting step 11 and a first fixing groove 13; a first mounting step 11 is attached to a first inner wall 12 of the base 1, the first mounting step 11 being for supporting the lens 100. The first fixing groove 13 is annularly arranged on the first outer wall 16 of the base 1 and extends along the circumferential direction of the first outer wall 16, the first fixing groove 13 is provided with a plurality of ball holes 14, the plurality of ball holes 14 are uniformly arranged along the circumferential direction of the first fixing groove 13 at intervals, and the ball holes 14 penetrate through the first inner wall 12. The adjusting balls 2 are engaged in the ball holes 14, and the adjusting balls 2 can abut against the edge of the upper bottom surface 101 of the lens 100. Preferably, the shape of the base 1 is determined by the shape of the lens 100, in the embodiment of the present invention, the lens 100 is a circular lens, so the base 1 is circular; in other embodiments, the base 1 may also be square ring or other shapes, and is not limited to this embodiment. In the embodiment of the present invention, the first fixing groove 13 is provided with four ball holes 14, and the four ball holes 14 are uniformly arranged along the circumference of the first fixing groove 13 at intervals; correspondingly, four adjusting balls 2 are provided, each adjusting ball 2 is respectively clamped in one ball hole 14, in other embodiments, according to the difference of the structure and the external dimension of the lens 100, other numbers of ball holes 14 and adjusting balls 2 may also be provided, and the present embodiment is not limited thereto. The elastic member 3 is disposed in the first fixing groove 13 and abuts against the adjustment ball 2. In this embodiment, the elastic member 3 is an elastic ring. When the lens 100 is placed on the first installation step 11, the elastic member 3 applies pressure with equal magnitude to the plurality of adjustment balls 2 uniformly arranged along the circumferential direction of the first fixing groove 13 at intervals through self elasticity, the acting force of each adjustment ball 2 applied to the upper bottom surface 101 of the lens 100 is the same, the acting force can be divided into two directions of radial pressure and axial pressure, the axial pressure is used for fixing the lens 100 on the first installation step 11, and the radial pressure is used for self-centering adjustment of the lens 100, so that the lens 100 and the base 1 are fixed and self-centering adjustment is realized; as long as the coaxiality of the base 1 and the light beam is ensured, the coaxiality of the mirror 100 and the light beam is ensured. The adjustment and installation processes of the lens 100 have no obvious friction, the phenomenon that the lens is polluted by dust is avoided, the structure is simple, and the cleanness is good; preferably, the material of the adjusting ball 2 is stainless steel, and the stainless steel ball has better corrosion resistance, is clean and sanitary, and can reliably press and connect the lens 100.

Further, the lens fixing device further includes a fastening ring 4, and the fastening ring 4 is sleeved on the first outer wall 16 and abuts against the elastic member 3. The fastening ring 4 further includes a second fixing groove 41 and a guide portion 42; the second fixing groove 41 is annularly formed on the inner wall of the fastening ring 4, the second fixing groove 41 corresponds to the first fixing groove 13, and the second fixing groove 41 is used for clamping the elastic element 3 to prevent the fastening ring 4 from being separated from the base 1 under the state of not receiving external force. The guide portion 42 is provided at an inner wall end portion of the fastening ring 4. The fastening ring 4 is coated on the outer side of the elastic piece 3, so that on one hand, the abutting reliability of the elastic piece 3 and the adjusting ball 2 is improved, the elastic piece 3 is in a squeezing state, and the elastic piece 3 is prevented from slipping off the adjusting ball 2; on the other hand, the elastic part 3 is effectively prevented from being damaged by other parts, and the reliability of the lens fixing device is ensured. Guide portion 42 is an inclined plane, sets up in the inner wall tip of tighrening ring 4, and when the tighrening ring 4 suit was on first outer wall 16, guide portion 42 was favorable to guiding the installation of tighrening ring 4, and is more laborsaving convenient.

Further, base 1 still includes second installation step 15, and second installation step 15 sets up in first outer wall 16, and second installation step 15 butt fastening ring 4's terminal surface, and second installation step 15 provides the support for fastening ring 4.

Further, the first mounting step 11 includes a fixing surface 111, and the fixing surface 111 abuts against the lower bottom surface 102 of the lens 100. In the embodiment of the present invention, the lens 100 is a plane mirror, and therefore, the fixing surface 111 is set to be a plane, which is convenient for abutting against the lower bottom surface 102 of the lens 100, and is more reliable for fixing the lens 100. In other embodiments, the fixing surface 111 may have other shapes according to different structures of the lens 100, and is not limited to this embodiment.

Further, the ball hole 14 is provided with a retainer 141, the retainer 141 is connected to the first inner wall 12, and the diameter of the retainer 141 is smaller than the diameter of the adjustment ball 2. When the lens 100 is not mounted on the first mounting step 11, the retainer ring 141 prevents the adjustment ball 2 from falling from the ball hole 14 toward the first inner wall 12 of the base 1, so that the adjustment ball 2 is always disposed in the ball hole 14.

Further, the lower spherical surface of the adjustment ball 2 abuts against the side of the upper bottom surface 101. Preferably, the position of the ball hole 14 is designed according to the thickness of the lens 100, so that the adjusting ball 2 clamped in the ball hole 14 always abuts against the edge of the upper bottom surface 101 of the lens 100 through the lower spherical surface, that is, the center of gravity of the adjusting ball 2 is located above the upper bottom surface 101 of the lens 100, thereby ensuring effective crimping of the adjusting ball 2 to the lens 100 and fixing the lens 100 on the first mounting step 11. Preferably, the axial direction of the ball hole 14 has an angle with the radial direction of the base 1, that is, the axial direction of the ball hole 14 is obliquely arranged along the radial direction of the base 1. The axial of ball hole 14 sets up along the radial direction downward sloping of base 1, so, the dead weight of usable adjustment ball 2 makes adjustment ball 2 and retaining ring 141 laminating, is convenient for adjust the installation of ball 2.

Example two

As shown in fig. 7, in the embodiment of the present invention, the lens fixing device has the same adjusting ball 2, the elastic member 3 and the substantially same base 1 as in the embodiment, the lens 100 for fixing is a convex lens, and the upper bottom surface 101 and the lower bottom surface 102 of the lens 100 are both arc surfaces. The embodiment of the utility model provides a different from embodiment one lies in, the stationary plane 111 of first installation step 11 is the arcwall face, curved stationary plane 111 butt convex lens's lower bottom surface 102 for the fixed more reliable of lens 100.

EXAMPLE III

As shown in fig. 8, in the embodiment of the present invention, the lens fixing device has the same adjusting ball 2, elastic member 3 and substantially the same base 1 as in the embodiment, the lens 100 for fixing is a wedge-shaped mirror, the upper bottom surface 101 of the wedge-shaped lens 100 is a slant surface, and the lower bottom surface 102 is a flat surface. The embodiment of the present invention is different from the first embodiment in that the first fixing groove 13 is provided with two ball holes 14, and the two ball holes 14 are uniformly arranged along the circumference of the first fixing groove 13 at intervals, that is, the two ball holes 14 are symmetrically arranged with respect to the center of the first fixing groove 13; correspondingly, be provided with two adjustment balls 2, every adjustment ball 2 joint respectively in a ball hole 14, the lower sphere of adjustment ball 2 butt the limit of the last bottom surface 101 of lens 100, can realize the self-centering adjustment of wedge lens 100 through two adjustment balls 2 to fix wedge lens 100 on first installation step 11.

Example four

As shown in fig. 9 and 10, in the embodiment of the present invention, the lens fixing device has a base 1 and an adjusting ball 2 which are substantially the same as those of the first embodiment, and the lens 100 for fixing may be a flat mirror as in the first embodiment, or a convex lens as in the second embodiment, or a wedge-shaped mirror as in the third embodiment; the embodiment of the utility model provides a difference with embodiment one lies in, lens fixing device still includes a plurality of plunger shells 17, and elastic component 3 is compression spring. Plunger shell 17 sets up in bulb hole 14, and elastic component 3 and adjusting ball 2 joint are in plunger shell 17, and elastic component 3, adjusting ball 2 and plunger shell 17 constitute bulb plunger jointly. When the lens 100 is installed, the adjusting ball 2 is pressed and can move along the axial direction of the plunger housing 17 to the direction of compressing the elastic element 3; when the external force is removed, the adjusting ball 2 automatically resets under the action of the elastic piece 3, and the lower spherical surface of the adjusting ball 2 abuts against the side line of the upper bottom surface 101 of the lens 100, so that the acting force of the adjusting ball 2 on the lens 100 can be decomposed into radial thrust and axial pressing force. Because the ball head plungers are uniformly distributed along the axial circumference of the base 1 at intervals, the radial thrust in all directions enables the lens 100 and the base 1 to realize self-centering, and the axial pressing force enables the lens 100 to be tightly attached to the first mounting step 11, so that the lens 100 is prevented from loosening. The utility model discloses part simple structure, clean moreover frictionless, reliable and stable.

Further, the plunger housing 17 includes a boss 171, the first inner wall 12 is provided with a stop groove 121, and the boss 171 is engaged with the stop groove 121 to prevent the plunger housing 17 from moving radially.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lens holding device, comprising:

the lens holder comprises a base (1), wherein the base (1) is annular, the base (1) comprises a first mounting step (11) and a plurality of ball holes (14), the first mounting step (11) is arranged on a first inner wall (12) of the base (1), the first mounting step (11) is used for supporting a lens (100), the plurality of ball holes (14) are uniformly arranged on the base (1) at intervals along the circumferential direction of the base (1), and the ball holes (14) penetrate through the first inner wall (12);

the adjusting balls (2) are clamped in the ball holes (14), and the adjusting balls (2) can abut against the edge of the upper bottom surface (101) of the lens (100); and

the elastic piece (3) is clamped on the base (1) and abutted against the adjusting ball (2), and the elastic piece (3) is configured to apply pressure to the adjusting ball (2).

2. The lens fixing device according to claim 1, wherein the base (1) further comprises a first fixing groove (13), the first fixing groove (13) is annularly arranged on a first outer wall (16) of the base (1) and extends along the circumferential direction of the first outer wall (16); the elastic piece (3) is clamped in the first fixing groove (13) and surrounds the first fixing groove (13).

3. The lens holding device according to claim 2, further comprising a fastening ring (4), wherein the fastening ring (4) is sleeved on the first outer wall (16) and abuts against the elastic member (3).

4. Lens fixing device according to claim 3, characterized in that the fastening ring (4) comprises a second fixing groove (41), the second fixing groove (41) is looped on the inner wall of the fastening ring (4), the second fixing groove (41) corresponds to the first fixing groove (13), and the second fixing groove (41) is used for clamping the elastic element (3).

5. Lens fixation device according to claim 3, characterized in that the fastening ring (4) further comprises a guide (42), which guide (42) is provided at an inner wall end of the fastening ring (4).

6. The lens fixation device according to claim 3, characterized in that the base (1) further comprises a second mounting step (15), the second mounting step (15) being provided on the first outer wall (16), the second mounting step (15) abutting an end face of the fastening ring (4).

7. Lens holding device according to claim 2, characterized in that the ball hole (14) is provided with a collar (141), which collar (141) is connected to the first inner wall (12), the diameter of the collar (141) being smaller than the diameter of the adjustment ball (2).

8. The lens fixing device according to claim 1, further comprising a plurality of plunger housings (17), wherein the plunger housings (17) are disposed in the ball hole (14), and the elastic member (3) and the adjustment ball (2) are engaged in the plunger housings (17).

9. The lens fixing device according to claim 8, wherein the plunger housing (17) comprises a boss (171), the first inner wall (12) is provided with a stop groove (121), and the boss (171) is clamped with the stop groove (121).

10. Lens fixation device according to any of claims 1-9, characterized in that the lower spherical surface of the adjustment ball (2) abuts the borderline of the upper bottom surface (101) of the lens (100).