Three-channel multi-magnification telecentric lens

Abstract

The utility model discloses a three-channel multi-magnification telecentric lens, which particularly relates to the technical field of telecentric lenses and comprises a main body, lenses are arranged on three sides of the main body, a first objective lens barrel is arranged on one side of the main body, and a second objective lens barrel is arranged at one end of the first objective lens barrel. A first connecting ring is fixedly connected to the side, close to the second objective lens barrel, of the first objective lens barrel. According to the utility model, the second connecting ring and the limiting block are matched with the first connecting ring, so that the second objective lens barrel and the first objective lens barrel can be conveniently combined and split, and the rotating disc is rotated to control the extrusion plate to extrude the limiting block moving into the limiting groove, so that the second objective lens barrel can generate a force for extruding the first objective lens barrel during installation; therefore, the connection strength and the connection stability of the second objective lens barrel and the first objective lens barrel can be improved, the inclination condition is avoided, meanwhile, the stability of the connection angle is not affected after multiple times of disassembly and combination, the problem of deviation is avoided, and the use effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of telecentric lens more specifically, the utility model relates to a three channel multi -magnification telecentric lens. BACKGROUND

[0002] In the modern optical imaging field, the performance requirement of the lens is increasing, especially in the application scene such as industrial detection, biomedical imaging, machine vision, telecentric lens is widely used because of its unique optical characteristics, such as eliminating parallax, can provide stable magnification, telecentric lens according to its unique optical characteristics: high resolution, super wide depth of field, ultra low distortion and unique parallel light design, bring qualitative leap to machine vision precision detection, the purpose of telecentric lens design is to eliminate the inconsistency of the distance of the measured object (or CCD chip) from the lens, resulting in different magnification;

[0003] Three channel multi -magnification telecentric lens is a kind of optical lens that combines advanced technologies such as multi-channel parallel imaging, multi-magnification adjustment and telecentric optical design, and has important application in many fields such as industrial detection, biomedical imaging, machine vision, which have strict requirements on imaging precision and efficiency;

[0004] The existing three channel multi -magnification telecentric lens, when the internal lens is disassembled and repaired, the shell is often installed and fixed by threaded connection, but after repeated disassembly and installation, the threads on the two shells are easy to wear, and after the threads are worn, the fitting accuracy will decrease, so that the lens may not be accurately returned to the original position after installation, thereby causing the lens angle to deviate, these deformations will cause the angle of the lens to change after installation, affecting the use effect, therefore a three channel multi -magnification telecentric lens is proposed. Utility model content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a three channel multi -magnification telecentric lens to solve the problems in the above background art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a three channel multi -magnification telecentric lens, including main part, the three sides of main part are provided with lens, the side of main part is provided with first objective lens barrel, one end of first objective lens barrel is provided with second objective lens barrel, three channel telecentric lens is completed through main part, lens, first objective lens barrel, second objective lens barrel, first connecting ring is fixedly connected on the side of first objective lens barrel close to second objective lens barrel, the middle part of first connecting ring is provided with mirror plate, the focal length is changed through the lens in the middle part of mirror plate, the focal length of three lenses is different;

[0007] The side of the first connecting ring is provided with a connecting groove, the middle part of the first connecting ring is provided with a limiting groove at the position communicated with the connecting groove, the side close to the first objective lens barrel of the second objective lens barrel is fixedly connected with a second connecting ring, the outer part of the second connecting ring is fixedly connected with a limiting block at the position corresponding to the connecting groove, the limiting groove is inserted into the inner part of the first connecting ring, the limiting block is located in the inner part of the connecting groove, and then the second objective lens barrel is rotated to control the limiting groove to move to the inner part of the limiting groove, so that the connection between the second objective lens barrel and the first objective lens barrel can be limited.

[0008] The side of the first connecting ring is provided with a connecting groove, the middle part of the first connecting ring is provided with a limiting groove at the position communicated with the connecting groove, the side close to the first objective lens barrel of the second objective lens barrel is fixedly connected with a second connecting ring, the outer part of the second connecting ring is fixedly connected with a limiting block at the position corresponding to the connecting groove, the limiting groove is inserted into the inner part of the first connecting ring, the limiting block is located in the inner part of the connecting groove, and then the second objective lens barrel is rotated to control the limiting groove to move to the inner part of the limiting groove, so that the connection between the second objective lens barrel and the first objective lens barrel can be limited.

[0009] Preferably, the surface of the split lens plate is embedded with three lenses, and a plurality of fixing columns are fixedly connected to one side of the split lens plate, and the fixing columns are staggered with the lenses. Different specifications of the lenses of the first objective lens barrel can make the picture magnification of the three lenses different, and the fixing columns facilitate the removal of the split lens plate.

[0010] Preferably, the edge of the split lens plate is provided with a positioning groove, and a plurality of positioning blocks are fixedly connected to the middle part of the first connecting ring, and the positioning blocks are arranged in the middle part of the positioning groove. The split lens plate is positioned by the cooperation of the positioning blocks and the positioning groove, thereby improving the stability of the installation of the split lens plate.

[0011] Preferably, the connecting groove and the limiting block correspond to each other, the limiting block is arranged in the middle part of the limiting groove, one end of the limiting block is arranged in a conical shape, and the thickness of the inner cavity of the limiting groove is greater than the thickness of the limiting block. The limiting block corresponds to the connecting groove, and the limiting block is rotated and moved to the inner part of the limiting groove by rotating the second objective lens barrel, so that the combination connection between the second objective lens barrel and the first objective lens barrel can be realized.

[0012] Preferably, the threaded rod is misaligned with the limiting block, the extrusion plate is arranged on the side of the limiting block away from the second objective lens barrel, the side of the extrusion plate close to the second objective lens barrel is provided with an anti-skid groove, and the side of the extrusion plate close to the limiting block is provided with an anti-skid groove, the threaded rod does not affect the movement of the limiting block, the extrusion plate is extruded against the limiting block by rotating the threaded rod, the second objective lens barrel can drive the first objective lens barrel to be extruded, the connection strength of the second objective lens barrel and the first objective lens barrel is improved, the fitting strength of the extrusion plate and the limiting block is improved by the anti-skid groove, the limiting block is prevented from rotating loosely, the connection strength of the second objective lens barrel is improved, and the stability and strength of the connection are not affected after the second objective lens barrel and the first objective lens barrel are disassembled and combined for many times.

[0013] Preferably, the threaded rod is misaligned with the limiting block, the extrusion plate is arranged on the side of the limiting block away from the second objective lens barrel, the side of the extrusion plate close to the second objective lens barrel is provided with an anti-skid groove, and the side of the extrusion plate close to the limiting block is provided with an anti-skid groove, the threaded rod does not affect the movement of the limiting block, the extrusion plate is extruded against the limiting block by rotating the threaded rod, the second objective lens barrel can drive the first objective lens barrel to be extruded, the connection strength of the second objective lens barrel and the first objective lens barrel is improved, the fitting strength of the extrusion plate and the limiting block is improved by the anti-skid groove, the limiting block is prevented from rotating loosely, the connection strength of the second objective lens barrel is improved, and the stability and strength of the connection are not affected after the second objective lens barrel and the first objective lens barrel are disassembled and combined for many times.

[0014] The technical effects and advantages of the utility model are as follows:

[0015] 1. The utility model discloses a second connecting ring and a limiting block are matched with a first connecting ring, so that the second objective lens barrel and the first objective lens barrel can be combined and disassembled conveniently, the limiting block in the limiting groove is extruded by rotating the turntable, the second objective lens barrel is extruded against the first objective lens barrel when being installed, the connection strength and stability of the second objective lens barrel and the first objective lens barrel are improved, the inclination of the second objective lens barrel and the first objective lens barrel is avoided, the stability of the connection angle is not affected after the second objective lens barrel and the first objective lens barrel are disassembled and combined for many times, and the deviation problem is avoided.

[0016] 2. The utility model discloses a limiting disc is arranged on the first connecting ring, the threaded rod is limited by the limiting disc, the second connecting ring is inserted into the first connecting ring, the side wall of the first connecting ring and the second objective lens barrel is parallel when the second objective lens barrel is extruded against the first objective lens barrel, the wall of the second objective lens barrel and the first connecting ring is closely fitted, the stability of the connection is improved, the angle deviation is avoided, the stability of the connection is improved, the positioning groove and the limiting block are matched, the mirror plate is limited conveniently, the mirror plate is disassembled and replaced conveniently when the first objective lens barrel and the second objective lens barrel are disassembled, and the use effect is improved.

[0017] In summary, the multiple effects can be combined conveniently, the connection strength and stability are not affected after the second objective lens barrel and the first objective lens barrel are disassembled and combined for many times, the angle deviation is avoided, and the use effect is improved. ACCURACY

[0018] Figure 1It is the whole structure schematic view of the utility model.

[0019] Figure 2 It is another angle structure schematic view of the utility model.

[0020] Figure 3 It is the structure schematic view of the second objective lens barrel of the utility model.

[0021] Figure 4 It is the connection structure schematic view of the main body and the first objective lens barrel of the utility model.

[0022] Figure 5 It is the partial section structure schematic view of the utility model.

[0023] Figure 6 It is the utility model Figure 5 The partial enlarged structure schematic view of A place in the utility model.

[0024] Figure 7 It is the split structure schematic view of the first objective lens barrel and the split lens plate and the threaded rod of the utility model.

[0025] The figure mark is: 1, main body;2, lens;3, first objective lens barrel;4, second objective lens barrel;5, first connecting ring;6, positioning block;7, split lens plate;8, positioning groove;9, fixed column;10, connecting groove;11, limiting groove;12, threaded rod;13, limiting disc;14, turntable;15, extrusion plate;16, second connecting ring;17, limiting block;18, sealing ring. Specific implementation

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0027] As shown in the drawings of the utility model embodiment, Figures 1-7 A three-channel multi-magnification telecentric lens, including a main body 1, three sides of the main body 1 are provided with a lens 2, one side of the main body 1 is provided with a first objective lens barrel 3, one end of the first objective lens barrel 3 is provided with a second objective lens barrel 4, a three-channel telecentric lens is formed by the main body 1, the lens 2, the first objective lens barrel 3 and the second objective lens barrel 4, a first connecting ring 5 is fixedly connected to one side of the first objective lens barrel 3 close to the second objective lens barrel 4, a split lens plate 7 is arranged in the middle of the first connecting ring 5, the focal length is changed by the lens in the middle of the split lens plate 7, and the focal lengths of the three lenses 2 are different.

[0028] The first connecting ring 5 is provided with a connecting groove 10 on one side, and a limiting groove 11 is provided on the position of the middle part of the first connecting ring 5 in communication with the connecting groove 10. The second objective lens barrel 4 is fixedly connected with a second connecting ring 16 on the side close to the first objective lens barrel 3. The second connecting ring 16 is fixedly connected with a limiting block 17 on the position corresponding to the connecting groove 10 on the outside. The limiting block 17 is inserted into the inside of the first connecting ring 5 through the limiting groove 11, and then the second objective lens barrel 4 is rotated to control the limiting groove 11 to move to the inside of the limiting groove 11, so as to limit the connection between the second objective lens barrel 4 and the first objective lens barrel 3.

[0029] A threaded rod 12 is inserted on the position corresponding to the limiting groove 11 on one side of the first connecting ring 5. The threaded rod 12 is fixedly connected with a limiting disc 13 and a rotating disc 14 on one end. The threaded rod 12 is threadedly sleeved with an extrusion plate 15 on the end away from the rotating disc 14. The rotating disc 14 is rotated to control the threaded rod 12 to drive the extrusion plate 15 to extrude the limiting block 17, so as to make the limiting block 17 drive the second connecting ring 16 to extrude the first objective lens barrel 3 at the position, thereby improving the stability and fixing strength of the connection between the first objective lens barrel 3 and the second objective lens barrel 4, and not affecting the stability and fixing strength of the connection combination after multiple disassembly and connection, thereby improving the use effect.

[0030] As shown in the accompanying drawings Figures 1-7As shown, the surface of the split mirror plate 7 is embedded with three lenses, one side of the split mirror plate 7 is fixedly connected with a plurality of fixed columns 9, the fixed columns 9 are staggered with the lenses, the edge of the split mirror plate 7 is provided with a positioning groove 8, the middle part of the first connecting ring 5 is fixedly connected with a plurality of positioning blocks 6, the positioning blocks 6 are arranged in the middle part of the positioning groove 8, the connecting grooves 10 correspond to the limiting blocks 17 one by one, the limiting blocks 17 are arranged in the middle part of the limiting grooves 11, one end of the limiting block 17 is arranged in a tapered shape, the inner cavity thickness of the limiting groove 11 is greater than the thickness of the limiting block 17, the threaded rod 12 is staggered with the limiting block 17, the extrusion plate 15 is arranged on the side of the limiting block 17 away from the second objective lens barrel 4, the side of the extrusion plate 15 close to the second objective lens barrel 4 is provided with an anti-skid groove, the side of the extrusion plate 15 close to the limiting block 17 is provided with an anti-skid groove, the threaded rod 12 is threadedly connected with the extrusion plate 15, the limiting disc 13 is embedded in the middle part of the first connecting ring 5, the rotating disc 14 is arranged on the side of the first connecting ring 5 away from the second objective lens barrel 4, the magnification of the pictures observed by the three lenses 2 can be different through the different specifications of the lenses of the first objective lens barrel 3, the split mirror plate 7 is convenient to take out through the fixed columns 9, the split mirror plate 7 is positioned through the cooperation of the positioning blocks 6 and the positioning grooves 8, the stability of the installation of the split mirror plate 7 is improved, the connecting grooves 10 are corresponded through the limiting blocks 17, and the limiting blocks 17 are rotated by rotating the second objective lens barrel 4 to be moved to the inside of the limiting grooves 11, so that the second objective lens barrel 4 and the first objective lens barrel 3 can be combined and connected, the movement of the limiting block 17 is not affected through the threaded rod 12, the extrusion plate 15 is extruded to the limiting block 17 through the rotation of the threaded rod 12, the first objective lens barrel 3 can be extruded by the second connecting ring 16 driving the second objective lens barrel 4, the connecting strength of the second objective lens barrel 4 and the first objective lens barrel 3 is improved, the adhesion strength of the extrusion plate 15 and the limiting block 17 is improved through the arrangement of the anti-skid groove, the rotation of the limiting block 17 is avoided, the connecting strength of the second objective lens barrel 4 is improved, and the stability and strength of the connection are not affected after the second objective lens barrel 4 and the first objective lens barrel 3 are disassembled and combined for many times, the threaded rod 12 is limited through the limiting disc 13, the extrusion plate 15 is moved through the rotation of the threaded rod 12 controlled by the rotating disc 14, and the use effect is improved.

[0031] The utility model discloses a working principle: when splitting overhauls, the extrusion plate 15 is moved to the side away from the limiting block 17 by rotating the rotating disc 14 and driving the threaded rod 12, the extrusion to the limiting block 17 is released, the limiting block 17 is moved from the inside of the limiting groove 11 to the position of the connecting groove 10 by rotating the second objective lens barrel 4, until the limiting block 17 corresponds to the connecting groove 10, then the second objective lens barrel 4 and the first objective lens barrel 3 can be split, the split mirror plate 7 is convenient to take out and replace for overhaul through the fixed column 9, and the utility model is convenient to use.

[0032] During installation, the limiting block 17 is corresponded with the connecting groove 10 and is rotated, the limiting block 17 is moved to the inside of the limiting groove 11, then the rotating disc 14 is rotated to control the extrusion plate 15 to extrude the limiting block 17, the second objective lens barrel 4 is extruded to the first objective lens barrel 3, the combined connection of the second objective lens barrel 4 and the first objective lens barrel 3 can be completed, and after multiple split combinations, the strength and stability of the connection are not affected, and the misalignment and inclination do not occur, the use effect is improved.

[0033] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A three-channel multi-magnification telecentric lens comprising a main body (1), characterized in that: Three sides of the main body (1) are provided with lenses (2), one side of the main body (1) is provided with a first objective lens barrel (3), one end of the first objective lens barrel (3) is provided with a second objective lens barrel (4), one side of the first objective lens barrel (3) close to the second objective lens barrel (4) is fixedly connected with a first connecting ring (5), and the middle part of the first connecting ring (5) is provided with a lens splitting plate (7); One side of the first connecting ring (5) is provided with a connecting groove (10), and the middle part of the first connecting ring (5) is provided with a limiting groove (11) in communication with the connecting groove (10), one side of the second objective lens barrel (4) close to the first objective lens barrel (3) is fixedly connected with a second connecting ring (16), and the outer part of the second connecting ring (16) is fixedly connected with a limiting block (17) at a position corresponding to the connecting groove (10); One side of the first connecting ring (5) is provided with a threaded rod (12) at a position corresponding to the limiting groove (11), one end of the threaded rod (12) is fixedly connected with a limiting disc (13) and a rotating disc (14), and the end of the threaded rod (12) away from the rotating disc (14) is threadedly sleeved with an extrusion plate (15).

2. The three-channel multi-magnification telecentric lens according to claim 1, wherein: The surface of the lens splitting plate (7) is embedded with three lenses, one side of the lens splitting plate (7) is fixedly connected with a plurality of fixed columns (9), and the fixed columns (9) are staggered with the lenses.

3. The three-channel multi-magnification telecentric lens according to claim 1, wherein: The edge of the lens splitting plate (7) is provided with a positioning groove (8), and the middle part of the first connecting ring (5) is fixedly connected with a plurality of positioning blocks (6), and the positioning blocks (6) are arranged in the middle part of the positioning groove (8).

4. The three-channel multi-magnification telecentric lens according to claim 1, wherein: The connecting groove (10) corresponds to the limiting block (17) one by one, the limiting block (17) is arranged in the middle part of the limiting groove (11), one end of the limiting block (17) is arranged in a tapered shape, and the inner cavity thickness of the limiting groove (11) is greater than the thickness of the limiting block (17).

5. The three-channel multi-magnification telecentric lens according to claim 1, wherein: The threaded rod (12) is staggered with the limiting block (17), the extrusion plate (15) is arranged on the side away from the second objective lens barrel (4) of the limiting block (17), the side close to the second objective lens barrel (4) of the extrusion plate (15) is provided with an anti-skid groove, and the side close to the limiting block (17) of the extrusion plate (15) is provided with an anti-skid groove.

6. The three-channel multi-magnification telecentric lens according to claim 1, wherein: The threaded rod (12) is threadedly connected with the extrusion plate (15), the limiting disc (13) is embedded in the middle part of the first connecting ring (5), and the rotating disc (14) is arranged on the side away from the second objective lens barrel (4) of the first connecting ring (5).

Images