An optical lens structure

Abstract

The present invention discloses an optical lens structure, comprising a lens holder, wherein a rotating cylinder and a power driving group capable of driving the rotating cylinder to rotate are arranged on the lens holder, a guide shaft fixedly connected to the lens holder is arranged on the inner side of the rotating cylinder, a lens group capable of sliding along the guide shaft is connected to the guide shaft, an inclined groove is arranged on the rotating cylinder, and a transmission foot matched with the inclined groove is arranged on the lens group, when the rotating cylinder rotates, the groove wall of the inclined groove pushes the transmission foot to make the lens group slide back and forth, the present invention is simple to process, avoids machining errors caused by machining multiple inclined grooves, which may cause the lens group to tilt and shift in the center when moving, adopts two guide shafts for auxiliary guiding, makes the lens group more stable when moving over a long distance, has better parallelism, has a simple structure, and is low in cost, thus greatly improving the quality of optical lens products.

Description

[Technical field]

[0001] The invention relates to an optical lens structure. [Background Technology]

[0002] With the rapid development of high-tech, optical lenses in the security field have been widely used. The working environment of existing optical lenses is diverse and complex. Optical lenses are prone to wear, lens group tilt and center offset when zooming, and are unable to meet the increasingly stringent requirements of today's customers.

[0003] The smaller the friction loss between the moving parts when the optical lens zooms, the better the durability of the optical lens.

[0004] The optical lens achieves zoom by moving the lens group. During the long zoom process of the optical lens, the lens group moves a long distance, which makes the lens group prone to tilt and center shift, causing the central axis of the lens group to deviate from the optical axis, greatly reducing the zoom effect of the optical lens.

[0005] The movement of the lens group of a traditional optical lens utilizes the following structure: a rotating cylinder is provided on the lens holder, a plurality of axisymmetric inclined grooves are provided on the side wall of the rotating cylinder, a transmission column extending into the inclined grooves is provided on the lens group, and when the rotating cylinder rotates, the inclined groove wall pushes the transmission column to move the lens group back and forth.

[0006] However, the structure of the traditional optical lens has the following disadvantages: a plurality of inclined grooves are arranged on the rotating cylinder, and there will be processing errors in the relative positions of the inclined grooves during processing, so that the inclined grooves are not absolutely axially symmetrical. Therefore, when the lens group moves, the movement of each transmission column is not absolutely synchronized, so that the movement of the lens group will cause tilt and center deviation, which will affect the imaging quality.

[0007] The present invention is produced based on the above problems. [Summary of the invention]

[0008] The purpose of the present invention is to address the deficiencies of the prior art and to provide an optical lens structure with a simple structure that can prevent the lens group from tilting and the center from shifting.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0010] An optical lens structure, characterized in that it includes a lens holder 1, on which a rotating cylinder 31 and a power drive group 2 capable of driving the rotating cylinder 31 to rotate are provided, on the inner side of the rotating cylinder 31 a guide shaft 33 fixedly connected to the lens holder 1 is provided, on the guide shaft 33 is connected a lens group 4 capable of sliding along the guide shaft, on the rotating cylinder 31 a slanted groove 311 is provided, on the lens group 4 a transmission foot 34 cooperating with the slanted groove 311 is provided, when the rotating cylinder 31 rotates, the groove wall of the slanted groove 311 pushes the transmission foot 34 to make the lens group 4 slide back and forth.

[0011] The optical lens structure as described above is characterized in that a guide cylinder 32 is disposed between the rotating cylinder 31 and the lens group 4 , a straight groove 321 is disposed on the guide cylinder 32 , and the transmission foot 34 passes through the straight groove 321 and cooperates with the oblique groove 311 .

[0012] An optical lens structure as described above is characterized in that the guide shaft 33 includes a first guide shaft 331 and a second guide shaft 332, and the lens group 4 is provided with a first guide position 41 and a second guide position 42, and the first guide shaft 331 and the second guide shaft 332 pass through the first guide position 41 and the second guide position 42 respectively, so that the lens group 4 can slide back and forth along the first guide shaft 331 and the second guide shaft 332 at the same time.

[0013] The optical lens structure as described above is characterized in that the first guide position 41 is a through hole provided on the lens group 4 , and the second guide position 42 is a notch provided on the lens group 4 .

[0014] An optical lens structure as described above is characterized in that a first gasket 35 is provided between the first guide position 41 and the first guide shaft 331, a second gasket 36 is provided between the second guide position 42 and the second guide shaft 332, and the first gasket 35 and the second gasket 36 are fixedly connected to the lens group 4 respectively.

[0015] The optical lens structure as described above is characterized in that the driving foot 34 includes a columnar component 342 connected to the lens group 4 , and a sleeve wheel 341 capable of rolling relative to the wall of the inclined groove 311 is sleeved on the columnar component 342 .

[0016] An optical lens structure as described above is characterized in that the columnar component 342 includes a circular column 3422, and the circular column 3422 includes a front circular column 34221 and a rear circular column 34222, the inner cavity of the front circular column 34221 is communicated with the inner cavity of the rear circular column 34222, a first step 34223 is formed between the front circular column 34221 and the rear circular column 34222, the sleeve wheel 341 is sleeved on the front circular column 34221, and the columnar component 342 also includes a screw 3421 that passes through the circular column 3422 and is connected to the lens group 4.

[0017] An optical lens structure as described above is characterized in that a cavity 43 is provided on the side wall of the lens group 4, the cavity 43 includes a front cavity 431 that cooperates with the rear circular column 34222, and the cavity 43 also includes a rear cavity 432 that cooperates with the screw 3421, and a second step 433 is provided between the front cavity 431 and the rear cavity 432, and the screw 3421 is screwed into the rear cavity 432 so that the rear circular column 34222 rests on the second step 433.

[0018] The optical lens structure as described above is characterized in that the power drive group 2 includes a drive motor 21, and the power drive group 2 also includes a gear group 22 that rotates in cooperation with the drive motor 21, and the rotating cylinder 31 is provided with a gear ring 312 that meshes with the gear group 22.

[0019] The optical lens structure as described above is characterized in that the gear set 22 includes a first gear 221 connected to the shaft of the driving motor 21, and the gear set 22 also includes a second gear 222 meshing with the first gear 221, and the second gear 222 is also meshing with the ring gear 312.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention realizes long-distance zooming of the optical lens by rotating the barrel drive, meets the shooting requirements of different use environments, and is suitable for optical lens products in the fields of security, digital, etc.

[0022] 2. The rotating cylinder of the present invention is provided with only one inclined groove, which is simple to process and avoids the processing error caused by processing multiple inclined grooves, which may cause the lens group to tilt and shift in the center when moving.

[0023] 3. The present invention adopts two guide shafts for auxiliary guiding, so that the lens group can move more smoothly and with better parallelism when moving over long distances, and can well improve the problems of tilt and center offset of the lens group, and has a good zoom effect.

[0024] 4. The present invention adopts a transmission foot structure and a wear-resistant liner, which can greatly reduce the friction between the movable parts inside the optical lens, improve the durability of the optical lens, and extend the service life of the optical lens.

[0025] 5. The present invention has a simple structure and low cost, and greatly improves the quality of optical lens products. [Drawings]

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 A three-dimensional diagram of another direction of the present invention;

[0028] Figure 3 One of the partial stereograms of the interior of the present invention;

[0029] Figure 4 is a cross-sectional view of the present invention;

[0030] Figure 5 A cross-sectional view of another direction of the present invention;

[0031] Figure 6 A plan view of the lens group and the transmission pin of the present invention;

[0032] Figure 7 The second partial stereoscopic view of the interior of the lens of the present invention;

[0033] Figure 8 A three-dimensional diagram of the lens group and the transmission foot;

[0034] Fig. 9 for Figure 8 A partial enlarged view of point A in the middle. [Specific implementation method]

[0035] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0036] like Figure 1-9 As shown, an optical lens structure includes a lens holder 1, a rotating cylinder 31 and a power driving group 2 capable of driving the rotating cylinder 31 to rotate are provided on the lens holder 1, a guide shaft 33 fixedly connected to the lens holder 1 is provided on the inner side of the rotating cylinder 31, a lens group 4 capable of sliding along the guide shaft 33 is connected to the guide shaft 33, an inclined groove 311 is provided on the rotating cylinder 31, and a transmission foot 34 cooperating with the inclined groove 311 is provided on the lens group 4. When the rotating cylinder 31 rotates, the groove wall of the inclined groove 311 pushes the transmission foot 34 to make the lens group 4 slide back and forth.

[0037] The power drive group 2 can drive the rotating cylinder 31 to rotate, and the transmission foot 34 can slide in the inclined groove 311 under the push of the groove wall of the inclined groove 311. The transmission foot 34 is connected to the lens group 4, thereby driving the lens group 4 to slide. Since the guide shaft 33 is fixedly connected to the lens bracket 1 and the lens group 4 is connected to the guide shaft 33, the lens group 4 can only slide back and forth along the guide shaft 33 in a straight line, realizing the optical lens long zoom, meeting the shooting requirements of different use environments, and being suitable for optical lens products in the fields of security, digital, etc. Only one inclined groove 311 is set on the rotating cylinder 31, and the processing is simple, avoiding the processing error caused by processing multiple inclined grooves, which causes the lens group 4 to tilt and shift the center when moving. The present invention has a simple structure and low cost, and greatly improves the quality of optical lens products.

[0038] like Figure 3-5 As shown, a guide cylinder 32 is disposed between the rotating cylinder 31 and the lens group 4 . A straight groove 321 is disposed on the guide cylinder 32 . The transmission foot 34 passes through the straight groove 321 and cooperates with the oblique groove 311 .

[0039] The straight groove 321 of the guide tube 32 can also limit the driving foot 34 to move linearly along the straight groove 321, so that the parallelism of the lens group 4 is better when moving over a long distance, and the problems of tilt and center offset of the lens group 4 can be better improved, and the zoom effect is very good.

[0040] like Figure 4 and Figure 7 As shown, the guide shaft 33 includes a first guide shaft 331 and a second guide shaft 332, and the lens group 4 is provided with a first guide position 41 and a second guide position 42, and the first guide shaft 331 and the second guide shaft 332 pass through the first guide position 41 and the second guide position 42 respectively, so that the lens group 4 can slide back and forth along the first guide shaft 331 and the second guide shaft 332 at the same time.

[0041] The present invention uses two guide shafts for auxiliary guiding, and the lens group 4 moves over a long distance to achieve long zoom of the optical lens more smoothly and with better parallelism, and can better improve the problems of tilt and center offset of the lens group 4, and the zoom effect is very good.

[0042] like Figure 6 As shown, the first guide position 41 is a through hole provided on the lens group 4 , and the second guide position 42 is a notch provided on the lens group 4 .

[0043] The first guide shaft 331 passes through the first guide position 41. Since the first guide position 41 is a through hole, the contact between the first guide shaft 331 and the lens group 4 is a surface-to-surface contact, so that the lens group 4 can slide back and forth along the guide shaft more smoothly, avoiding the problems of tilting and center deviation. The second guide shaft 332 passes through the second guide position 42. Since the second guide position 42 is a notch, the contact between the second guide shaft 332 and the lens group 4 is close to a line-to-surface contact, so that the lens group 4 can slide back and forth along the guide shaft more smoothly and fluently.

[0044] like Figure 4 and Figure 7 As shown, a first gasket 35 is provided between the first guide position 41 and the first guide shaft 331 , and a second gasket 36 is provided between the second guide position 42 and the second guide shaft 332 . The first gasket 35 and the second gasket 36 are fixedly connected to the lens group 4 , respectively.

[0045] The present invention uses a gasket, which is a wear-resistant material and can greatly reduce the friction loss generated when the lens group 4 slides back and forth along the guide shaft, thereby improving the durability of the optical lens and extending the service life of the optical lens.

[0046] like Figure 6 and Figure 7 As shown, the driving foot 34 includes a columnar component 342 connected to the lens group 4 , and a sleeve wheel 341 is sleeved on the columnar component 342 and can roll relative to the wall of the inclined groove 311 .

[0047] The present invention adopts a transmission foot 34 to avoid direct contact between the lens group 4 and the rotating cylinder 31, and can reduce the friction loss generated when the lens group 4 slides. At the same time, the transmission foot 34 adopts a rolling sleeve 341. When the transmission foot 34 slides back and forth in the inclined groove 311 and the straight groove 321, the sleeve 341 can rotate around the columnar component 342, which can greatly reduce the sliding friction loss between the transmission foot 34 and the groove wall of the inclined groove 311 and the groove wall of the straight groove 321, ensuring that the lens group 4 is smoother and smoother when sliding over a long distance, improving the durability of the optical lens, and extending the service life of the optical lens.

[0048] like Figure 5 and Figure 8 As shown, the columnar component 342 includes a circular column 3422, and the circular column 3422 includes a front circular column 34221 and a rear circular column 34222. The inner cavity of the front circular column 34221 is communicated with the inner cavity of the rear circular column 34222. A first step 34223 is formed between the front circular column 34221 and the rear circular column 34222. The sleeve wheel 341 is sleeved on the front circular column 34221. The columnar component 342 also includes a screw 3421 that passes through the circular column 3422 and is connected to the lens group 4.

[0049] The columnar component 342 is firmly connected to the lens group 4 by means of screws 3421, and the sleeve wheel 341 does not contact the lens group 4. When the sleeve wheel 341 rotates around the columnar component 342, it can avoid friction with the lens group 4, thereby reducing the loss of the lens group 4, improving the durability of the optical lens, and extending the service life of the optical lens.

[0050] like Figure 8 and Fig. 9 As shown, a cavity 43 is provided on the side wall of the lens group 4, and the cavity 43 includes a front cavity 431 that cooperates with the rear circular column 34222, and the cavity 43 also includes a rear cavity 432 that cooperates with the screw 3421. A second step 433 is provided between the front cavity 431 and the rear cavity 432, and the screw 3421 is screwed into the rear cavity 432, so that the rear circular column 34222 rests on the second step 433.

[0051] like Figure 1 and Figure 2 As shown, the power drive group 2 includes a driving motor 21 , and the power drive group 2 also includes a gear group 22 that rotates in cooperation with the driving motor 21 . The rotating cylinder 31 is provided with a gear ring 312 that meshes with the gear group 22 .

[0052] After receiving the electrical signal, the driving motor 21 rotates at a high speed, driving the gear set 22 to rotate. The gear set 22 meshes with the ring gear 312 on the rotating cylinder 31, thereby driving the rotating cylinder 31 to rotate.

[0053] like Figure 2 As shown, the gear set 22 includes a first gear 221 connected to the rotating shaft of the driving motor 21 , and the gear set 22 also includes a second gear 222 meshing with the first gear 221 , and the second gear 222 is also meshing with the ring gear 312 .

Claims

1. An optical lens structure, characterized in that: The invention comprises a lens holder (1), wherein the lens holder (1) is provided with a rotating cylinder (31) and a power driving group (2) capable of driving the rotating cylinder (31) to rotate, wherein a guide shaft (33) fixedly connected to the lens holder (1) is provided inside the rotating cylinder (31), wherein a lens group (4) capable of sliding along the guide shaft (33) is connected to the guide shaft (33), wherein an inclined groove (311) is provided on the rotating cylinder (31), wherein a transmission foot (34) matched with the inclined groove (311) is provided on the lens group (4), and when the rotating cylinder (31) rotates, the groove wall of the inclined groove (311) pushes the transmission foot (34) to make the lens group (4) slide back and forth; A guide cylinder (32) is provided between the rotating cylinder (31) and the lens group (4), a straight groove (321) is provided on the guide cylinder (32), and the transmission foot (34) passes through the straight groove (321) and cooperates with the oblique groove (311); The transmission foot (34) comprises a columnar component (342) connected to the lens group (4), and a sleeve wheel (341) is sleeved on the columnar component (342) and can roll relative to the wall of the inclined groove (311); The columnar component (342) includes a circular column (3422), and the circular column (3422) includes a front circular column (34221) and a rear circular column (34222), the inner cavity of the front circular column (34221) is communicated with the inner cavity of the rear circular column (34222), a first step (34223) is formed between the front circular column (34221) and the rear circular column (34222), the sleeve wheel (341) is sleeved on the front circular column (34221), and the columnar component (342) further includes a screw (3421) that passes through the circular column (3422) and is connected to the lens group (4); A cavity (43) is provided on the side wall of the lens group (4), the cavity (43) includes a front cavity (431) matched with the rear circular column (34222), the cavity (43) also includes a rear cavity (432) matched with the screw (3421), a second step (433) is provided between the front cavity (431) and the rear cavity (432), the screw (3421) is screwed into the rear cavity (432), so that the rear circular column (34222) is pressed against the second step (433).

2. An optical lens structure according to claim 1, characterized in that: The guide shaft (33) comprises a first guide shaft (331) and a second guide shaft (332); the lens group (4) is provided with a first guide position (41) and a second guide position (42); the first guide shaft (331) and the second guide shaft (332) respectively pass through the first guide position (41) and the second guide position (42), so that the lens group (4) can slide back and forth along the first guide shaft (331) and the second guide shaft (332) at the same time.

3. An optical lens structure according to claim 2, characterized in that: The first guide position (41) is a through hole provided on the lens group (4), and the second guide position (42) is a notch provided on the lens group (4).

4. An optical lens structure according to claim 2, characterized in that: A first gasket (35) is provided between the first guide position (41) and the first guide shaft (331), and a second gasket (36) is provided between the second guide position (42) and the second guide shaft (332). The first gasket (35) and the second gasket (36) are respectively fixedly connected to the lens group (4).

5. The optical lens structure according to claim 1, characterized in that: The power drive group (2) includes a drive motor (21), and the power drive group (2) also includes a gear group (22) that rotates in coordination with the drive motor (21). The rotating cylinder (31) is provided with a gear ring (312) that meshes with the gear group (22).

6. An optical lens structure according to claim 5, characterized in that: The gear set (22) comprises a first gear (221) connected to the rotating shaft of the driving motor (21), and the gear set (22) also comprises a second gear (222) meshing with the first gear (221), and the second gear (222) is also meshing with the ring gear (312).

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