CN214751014U

CN214751014U - Calibrator for zoom lens

Info

Publication number: CN214751014U
Application number: CN202120696320.0U
Authority: CN
Inventors: 童建; 曾涛; 刘飞
Original assignee: Jiangsu Muteng Optical Precision Instrument Co ltd
Current assignee: Jiangsu Muteng Optical Precision Instrument Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-16
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a calibrator for zoom lens, including the zoom lens body, the zoom lens body includes lens cone, first fixed lens, second fixed lens, first zoom lens and second zoom lens, first fixed lens and second fixed lens are fixed mounting respectively in the top and the bottom of lens cone, the utility model discloses a can drive first zoom lens and second zoom lens to change the relative distance with between first fixed lens and the second fixed lens through setting up the calibrator body; slide from top to bottom through driving first variable power lens and second variable power lens and replace traditional curve friction variable power mode, avoid the friction clearance that the friction produced, improve the variable power repeatability and then guarantee the variable power precision, avoid the production of friction cuttings, improve the imaging definition, avoid the unexpected card of camera lens to die the normal clear of guaranteeing user's production operation, simple structure and easily processing, performance is good.

Description

Calibrator for zoom lens

Technical Field

The utility model relates to an optical measurement instrument technical field specifically is a calibrator for zoom lens.

Background

With the improvement of science and technology and the improvement of measurement precision, the image tool has the advantages of rapidness, intuition, accuracy and the like, and the zoom lens is one of the zoom lenses. The zoom lens is widely applied to the fields of industrial detection, automation, electronic communication, semiconductors, biomedical science, scientific research and the like. The zoom lens realizes the magnification and reduction of a target object through a zoom device, and generally changes the relative distance between the zoom lens and a fixed optical lens so as to change the magnification of the zoom lens.

However, in the zooming operation, the zooming device generally adopts a curve to zoom and repeated friction exists, and long time before, the clearance of the moving part of the zooming device is increased, so that the centers of every imaging are not in the same position, the zooming repeatability is poor, and the precision is poor; the imaging is inconsistent, and the imaging is clear while the imaging is unclear; friction can generate friction powder, the powder falls on the surface inside the lens, and as the lens cannot be disassembled and cleaned, impurities appear in an imaging image, so that the imaging definition is reduced and reduced; the friction clearance increases to a certain degree, can lead to the unable normal work of camera lens, must dismantle the maintenance, because the camera lens is installed in airtight inside in the equipment and generally takes place at the user scene, dismantles maintenance time longer, seriously influences user's production needs, causes great economic loss. Therefore, it is desirable to provide a calibrator for zoom lens to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a calibrator for zoom lens, the calibrator body can drive a first zoom lens and a second zoom lens to change the relative distance between the first fixed lens and the second fixed lens; the traditional curve friction zooming mode is replaced by driving the first zooming lens and the second zooming lens to slide up and down, so that friction gaps generated by friction are avoided, zooming repeatability is improved, zooming precision is guaranteed, and the problem in the background art is solved.

In order to achieve the above object, the utility model provides a following technical scheme: a calibrator for a zoom lens comprises a zoom lens body, wherein the zoom lens body comprises a lens barrel, a first fixed lens, a second fixed lens, a first zoom lens and a second zoom lens, the first fixed lens and the second fixed lens are respectively and fixedly arranged at the top end and the bottom end of the lens barrel, the first zoom lens and the second zoom lens are both connected inside the lens barrel in a sliding manner, the distance between the first zoom lens and the second zoom lens is not changed, one side of the outer wall of the lens barrel is provided with a calibrator body for driving the first zoom lens and the second zoom lens to lift, one side of the inner wall of the lens barrel is provided with a groove, the bottom inside of the groove is rotatably connected with a connecting shaft, the top inside of the groove is rotatably connected with a screw rod, the top end of the connecting shaft is fixedly connected with the bottom end of the screw rod, two groups of screw rod nuts are in threaded connection with each other, guide blocks are respectively fixed outside the two groups of screw rod nuts, and one sides of the two groups of guide blocks are respectively and fixedly connected to one sides of the first variable power lens and the second variable power lens.

Preferably, the calibrator body includes fixed case, motor shaft, first conical gear, pivot and second conical gear, fixed case fixed mounting is in lens cone outer wall one side, motor fixed mounting is in fixed incasement bottom, motor shaft fixed connection is in the output axle head of motor, the motor shaft outside is located to the fixed cover of first conical gear, the pivot rotates to be connected in fixed incasement bottom, the outside of pivot is located to the fixed cover of second conical gear, first conical gear and second conical gear intermeshing are connected.

Preferably, the calibrator body further comprises a first belt wheel, a synchronous belt and a second belt wheel, the first belt wheel is fixedly sleeved outside the rotating shaft, the first belt wheel is arranged above the second bevel gear, the second belt wheel is fixedly sleeved outside the connecting shaft, and the first belt wheel and the second belt wheel are connected through the synchronous belt in a transmission manner.

Preferably, the calibrator body further comprises a box cover, a clamping block is fixedly connected to the bottom of the box cover, a clamping groove is formed in the top of the fixed box, and the clamping block is clamped in the clamping groove.

Preferably, a placing groove is formed in the top of the box cover, two groups of ear seats are fixedly mounted in the placing groove, handles are connected to one ends of the two groups of ear seats in a pin mode, and the cross section of each handle is of a U-shaped structure.

Preferably, the other sides of the first variable power lens and the second variable power lens are fixedly connected with sliding blocks, the other side of the inner wall of the lens barrel is provided with a sliding groove, and the two groups of sliding blocks are connected inside the sliding groove in a sliding mode.

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

1. the utility model is provided with the lens cone, the first zoom lens, the second zoom lens and the calibrator body which are matched for use, and the calibrator body can drive the first zoom lens and the second zoom lens to change the relative distance between the first fixed lens and the second fixed lens; the first zoom lens and the second zoom lens are driven to slide up and down to replace a traditional curve friction zoom mode, so that friction gaps generated by friction are avoided, zoom repeatability is improved, zoom precision is guaranteed, friction powder is avoided, imaging definition is improved, sudden blocking of a lens is avoided, normal production operation of a user is guaranteed, the structure is simple, processing is easy, and using performance is good;

2. through setting up connecting axle, lead screw, screw-nut, guide block, first zoom lens and the cooperation of second zoom lens and using, screw-nut and guide block can drive first zoom lens and the stable slip from top to bottom that goes on of second zoom lens on the lead screw of lens cone, improve the zoom repeatability and then guarantee the zoom precision.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic structural diagram of the calibrator body of the present invention;

fig. 3 is a schematic structural view of a first zoom lens of the present invention;

fig. 4 is a schematic structural diagram of a lens barrel according to the present invention.

In the figure: 1. a zoom lens body; 2. a lens barrel; 201. a chute; 3. a first fixed lens; 4. a second fixed lens; 5. a calibrator body; 6. a fixed box; 601. a card slot; 7. a motor; 701. a motor shaft; 8. a first bevel gear; 9. a rotating shaft; 10. a second bevel gear; 11. a first pulley; 12. a synchronous belt; 13. a second pulley; 1301. a connecting shaft; 14. a box cover; 1401. a clamping block; 15. an ear mount; 16. a handle; 17. a first variable power lens; 18. a second variable power lens; 19. a screw rod; 20. a feed screw nut; 21. a guide block; 22. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a calibrator for a zoom lens comprises a zoom lens body 1, wherein the zoom lens body 1 comprises a lens cone 2, a first fixed lens 3, a second fixed lens 4, a first zoom lens 17 and a second zoom lens 18, the first fixed lens 3 and the second fixed lens 4 are respectively and fixedly arranged at the top end and the bottom end of the lens cone 2, the first zoom lens 17 and the second zoom lens 18 are both connected inside the lens cone 2 in a sliding manner, the distance between the first zoom lens 17 and the second zoom lens 18 is unchanged, a calibrator body 5 for driving the first zoom lens 17 and the second zoom lens 18 to ascend and descend is arranged at one side of the outer wall of the lens cone 2, a groove is arranged at one side of the inner wall of the lens cone 2, the bottom in the groove is rotatably connected with a connecting shaft 1301, the top in the groove is rotatably connected with a screw rod 19, the top end of the connecting shaft 1301 and the bottom end of the screw rod 19 are fixedly connected, two groups of screw rod nuts 20 are connected with the screw rod 19 through threads, the outer parts of the two groups of screw nuts 20 are fixedly sleeved with guide blocks 21, one sides of the two groups of guide blocks 21 are fixedly connected to one sides of the first zoom lens 17 and the second zoom lens 18 respectively, the other sides of the first zoom lens 17 and the second zoom lens 18 are fixedly connected with sliding blocks 22, the other side of the inner wall of the lens barrel 2 is provided with a sliding groove 201, the two groups of sliding blocks 22 are connected inside the sliding groove 201 in a sliding mode, a structure that the sliding blocks 22 are matched with the sliding groove 201 is arranged, and the stability of the first zoom lens 17 and the second zoom lens 18 in the sliding mode is further improved;

the calibrator body 5 comprises a fixed box 6, a motor 7, a motor shaft 701, a first bevel gear 8, a rotating shaft 9 and a second bevel gear 10, the fixed box 6 is fixedly arranged on one side of the outer wall of the lens cone 2, the motor 7 is fixedly arranged at the bottom in the fixed box 6, the motor shaft 701 is fixedly connected with the output shaft end of the motor 7, the first bevel gear 8 is fixedly sleeved outside the motor shaft 701, the rotating shaft 9 is rotatably connected with the bottom in the fixed box 6, the second bevel gear 10 is fixedly sleeved outside the rotating shaft 9, the first bevel gear 8 and the second bevel gear 10 are mutually meshed and connected, the calibrator body 5 further comprises a first belt pulley 11, a synchronous belt 12 and a second belt pulley 13, the first belt pulley 11 is fixedly sleeved outside the rotating shaft 9, the first belt pulley 11 is arranged above the second bevel gear 10, the second belt pulley 13 is fixedly sleeved outside the connecting shaft 1301, and the first belt pulley 11 is in transmission connection with the second belt pulley 13 through the synchronous belt 12, the motor 7 works to drive the motor shaft 701 to rotate and the first bevel gear 8 to rotate, so that the second bevel gear 10 and the rotating shaft 9 rotate, the rotating shaft 9 rotates while driving the first belt pulley 11 to rotate, so that the second belt pulley 13 and the connecting shaft 1301 rotate, and further the screw rod 19 rotates, and the screw rod 19 rotates while enabling the two groups of screw rod nuts 20 and the guide block 21 to stably slide up and down on the screw rod 19, so that the first variable power lens 17 and the second variable power lens 18 can be driven to stably slide up and down on the screw rod 19 of the lens cone 2, and the first variable power lens 17 and the second variable power lens 18 can be driven to change the relative distance between the first fixed lens 3 and the second fixed lens 4; the traditional curve friction zooming mode is replaced, friction gaps generated by friction are avoided, zooming repeatability is improved, zooming precision is guaranteed, friction powder is avoided, imaging definition is improved, sudden blocking of a lens is avoided, and normal operation of production operation of a user is guaranteed;

the calibrator body 5 further comprises a box cover 14, a clamping block 1401 is fixedly connected to the bottom of the box cover 14, a clamping groove 601 is formed in the top of the fixing box 6, the clamping block 1401 is clamped in the clamping groove 601, and a structure that the clamping block 1401 is matched with the clamping groove 601 is arranged, so that the box cover 14 and the fixing box 6 are more convenient to mount and dismount; the standing groove has been seted up at case lid 14 top, and fixed mounting has two sets of ear seats 15 in the standing groove, and two sets of ear seats 15 one end pin has handle 16, and handle 16's cross section sets up to the U font structure, sets up handle 16 and can open case lid 14, sets up standing groove and ear seat 15 and can accomodate handle 16.

When in use, the motor 7 of the calibrator body 5 is started, the motor 7 works to drive the motor shaft 701 to rotate and the first bevel gear 8 to rotate, because the first bevel gear 8 and the second bevel gear 10 are meshed and connected with each other, so that the second bevel gear 10 and the rotating shaft 9 rotate, the rotating shaft 9 rotates and simultaneously drives the first belt pulley 11 to rotate, and the first belt pulley 11 and the second belt pulley 13 are in transmission connection through the synchronous belt 12, so that the second belt pulley 13 and the connecting shaft 1301 rotate, thereby leading the screw rod 19 to rotate, leading the two groups of screw rod nuts 20 and the guide blocks 21 to stably slide up and down on the screw rod 19 when the screw rod 19 rotates, thereby driving the first variable power lens 17 and the second variable power lens 18 to stably slide up and down on the screw rod 19 of the lens cone 2, the first variable power lens 17 and the second variable power lens 18 can be driven to change the relative distance between the first fixed lens 3 and the second fixed lens 4; the traditional curve friction zooming mode is replaced, friction gaps generated by friction are avoided, zooming repeatability is improved, zooming precision is guaranteed, friction powder is avoided, imaging definition is improved, sudden blocking of a lens is avoided, normal operation of production operation of a user is guaranteed, the structure is simple, processing is easy, and use performance is good.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a calibrator for zoom lens, includes zoom lens body (1), its characterized in that: the zoom lens body (1) comprises a lens barrel (2), a first fixed lens (3), a second fixed lens (4), a first zoom lens (17) and a second zoom lens (18), the first fixed lens (3) and the second fixed lens (4) are fixedly installed at the top end and the bottom end of the lens barrel (2) respectively, the first zoom lens (17) and the second zoom lens (18) are connected inside the lens barrel (2) in a sliding mode, the distance between the first zoom lens (17) and the second zoom lens (18) is unchanged, a calibrator body (5) for driving the first zoom lens (17) and the second zoom lens (18) to ascend and descend is arranged on one side of the outer wall of the lens barrel (2), a groove is formed in one side of the inner wall of the lens barrel (2), the inner bottom of the groove is rotatably connected with a connecting shaft (1301), and a screw rod (19) is rotatably connected to the top of the groove, connecting axle (1301) top and lead screw (19) bottom fixed connection, threaded connection has two sets of screw-nut (20) on lead screw (19), and is two sets of screw-nut (20) outside all fixed cover is equipped with guide block (21), and is two sets of guide block (21) one side difference fixed connection is in first variable power lens (17) and second variable power lens (18) one side.

2. The calibrator for zoom lenses according to claim 1, wherein: the calibrator body (5) comprises a fixed box (6), a motor (7), a motor shaft (701), a first bevel gear (8), a rotating shaft (9) and a second bevel gear (10), the fixed box (6) is fixedly installed on one side of the outer wall of the lens cone (2), the motor (7) is fixedly installed at the inner bottom of the fixed box (6), the motor shaft (701) is fixedly connected to the output shaft end of the motor (7), the first bevel gear (8) is fixedly sleeved on the outer portion of the motor shaft (701), the rotating shaft (9) is rotatably connected to the inner bottom of the fixed box (6), the second bevel gear (10) is fixedly sleeved on the outer portion of the rotating shaft (9), and the first bevel gear (8) and the second bevel gear (10) are meshed with each other and connected.

3. The calibrator for zoom lenses according to claim 2, wherein: the calibrator body (5) further comprises a first belt wheel (11), a synchronous belt (12) and a second belt wheel (13), the first belt wheel (11) is fixedly sleeved on the outer portion of the rotating shaft (9), the first belt wheel (11) is arranged above the second bevel gear (10), the second belt wheel (13) is fixedly sleeved on the outer portion of the connecting shaft (1301), and the first belt wheel (11) and the second belt wheel (13) are in transmission connection through the synchronous belt (12).

4. The calibrator for zoom lenses according to claim 3, wherein: the calibrator body (5) further comprises a box cover (14), a clamping block (1401) is fixedly connected to the bottom of the box cover (14), a clamping groove (601) is formed in the top of the fixed box (6), and the clamping block (1401) is clamped in the clamping groove (601).

5. The calibrator for zoom lenses according to claim 4, wherein: the box cover is characterized in that a placing groove is formed in the top of the box cover (14), two groups of ear seats (15) are fixedly mounted in the placing groove, one end of each ear seat (15) is connected with a handle (16) in a pin mode, and the cross section of each handle (16) is of a U-shaped structure.

6. The calibrator for zoom lenses according to claim 1, wherein: the other sides of the first zoom lens (17) and the second zoom lens (18) are fixedly connected with sliding blocks (22), the other side of the inner wall of the lens barrel (2) is provided with a sliding groove (201), and the sliding blocks (22) are connected inside the sliding groove (201) in a sliding mode.