CN110543062A - Focusing device and lens comprising same - Google Patents
Focusing device and lens comprising same Download PDFInfo
- Publication number
- CN110543062A CN110543062A CN201910557767.7A CN201910557767A CN110543062A CN 110543062 A CN110543062 A CN 110543062A CN 201910557767 A CN201910557767 A CN 201910557767A CN 110543062 A CN110543062 A CN 110543062A
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- cylinder
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- straight
- focusing
- focusing device
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 16
- 241001330002 Bambuseae Species 0.000 claims description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 16
- 239000011425 bamboo Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a focusing device, which comprises a connecting cylinder and a straight-moving cylinder; the focusing device is characterized in that a positioning column is arranged on the outer wall of the connecting cylinder, an avoiding groove for avoiding the positioning column is formed in the inner wall of the straight-feeding cylinder, the connecting cylinder is sleeved into the straight-feeding cylinder in a sliding mode through the avoiding groove and the positioning column in a matched mode, a limiting strip-shaped hole corresponding to the avoiding groove is formed in the outer wall of the straight-feeding cylinder, the limiting strip-shaped hole is communicated with the avoiding groove, the focusing device further comprises a positioning column extension assembly, one end of the positioning column extension assembly penetrates through the limiting strip-shaped hole to be connected with the positioning column, and the other end of the positioning column extension. The invention also discloses a lens comprising the focusing device. In addition, as the positioning column extension assembly can be machined by mechanical turning, the dimensional accuracy is higher, and the focusing accuracy is favorably improved.
Description
Technical Field
The invention relates to the field of cameras, in particular to a focusing device and a lens comprising the same.
Background
With the common application of the lens in projectors, industrial detection, intelligent transportation, scanning and copying equipment and photographic cameras, the lens needs to meet the requirements of different object distances, and the lens is required to have a focusing function, namely a focusing structure for adjusting the lens and an image plane is required.
The common focusing devices on the market are all complex in operation, high in cost and troublesome in assembly and disassembly.
Disclosure of Invention
The present invention is directed to a focusing device and a lens assembly including the same, so as to solve the problems of the related art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a focusing device, includes connecting cylinder and straight a section of thick bamboo that advances, be provided with the reference column on the connecting cylinder outer wall, the inner wall of straight a section of thick bamboo of advancing is seted up and is dodged the groove of dodging of reference column, and the connecting cylinder slides through the cooperation of dodging groove and reference column and embolias straight a section of thick bamboo of advancing in, set up the spacing strip hole that corresponds with dodging the trench position on the outer wall of straight a section of thick bamboo of advancing, spacing strip hole link up with dodging the groove mutually, focusing device still includes reference column extension subassembly, and reference column extension subassembly one end is passed spacing strip hole and is connected with the reference column, and the other end protrusion.
as a further scheme of the invention: still including focusing the subassembly, adjusting a section of thick bamboo and base, the connecting portion of focusing the subassembly are provided with the external screw thread, and the connecting cylinder inner wall is seted up and is focused subassembly external screw thread matched with internal thread, and the subassembly of focusing passes through screw-thread fit and installs on the connecting cylinder, base fixed mounting is in the bottom of directly advancing a section of thick bamboo, adjust a section of thick bamboo inner wall and set up the adjustment tank with reference column extension subassembly matched with, the adjustment tank extends in the inner wall slope of adjusting a section of thick bamboo, is provided with the retaining ring on the directly advancing a section of thick bamboo outer wall, adjusts a section of thick bamboo rotation cover and establishes outside directly advancing a section of thick bamboo, and adjusts.
As a still further scheme of the invention: the base and the straight-moving cylinder are fixed through screws.
As a still further scheme of the invention: the positioning column extension assembly is a sleeve, and the sleeve is sleeved outside the positioning column.
As a still further scheme of the invention: the sleeve and the positioning column are fixed through screws.
As a still further scheme of the invention: the positioning columns are three in number and are evenly distributed on the outer wall of the connecting cylinder.
A lens comprises the focusing device.
Compared with the prior art, the invention has the beneficial effects that: in addition, as the positioning column extension assembly can be machined by mechanical turning, the dimensional accuracy is higher, and the focusing accuracy is favorably improved.
Drawings
Fig. 1 is a schematic structural diagram of a focusing device.
FIG. 2 is a cross-sectional view of a focusing device.
FIG. 3 is a schematic structural diagram of a connecting tube in the focusing device.
FIG. 4 is a schematic structural diagram of an adjusting cylinder in the focusing device.
FIG. 5 is a schematic structural diagram of a linear motion barrel in a focusing apparatus.
FIG. 6 is a schematic structural diagram of a base in the focusing device.
In the figure: 1-focusing component, 2-connecting cylinder, 3-positioning column, 4-straight-moving cylinder, 5-adjusting cylinder, 6-base, 7-positioning column extension component, 8-screw, 9-limiting strip-shaped hole, 10-avoiding groove and 11-adjusting groove.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
Referring to fig. 1-6, a focusing device comprises a connecting cylinder 2 and a straight-in cylinder 4, wherein a positioning column 3 is disposed on an outer wall of the connecting cylinder 2, an avoiding groove 10 for avoiding the positioning column 3 is disposed on an inner wall of the straight-in cylinder 4, the connecting cylinder 2 is slidably sleeved into the straight-in cylinder 4 through cooperation between the avoiding groove 10 and the positioning column 3, a limiting strip-shaped hole 9 corresponding to the avoiding groove 10 is disposed on an outer wall of the straight-in cylinder 4, the limiting strip-shaped hole 9 is communicated with the avoiding groove 10, the focusing device further comprises a positioning column extension assembly 7, one end of the positioning column extension assembly 7 passes through the limiting strip-shaped hole 9 to be connected with the positioning column 3, the other end of the positioning column extension assembly protrudes out of the outer wall of the straight-in cylinder 4, when focusing adjustment is performed, the positioning column extension assembly 7 moves along the limiting strip-shaped hole 9, so as to drive the positioning column 3 to move along the avoiding, the focusing adjustment is realized, the existing focusing device is not provided with a positioning column extension component 7, a positioning column on the outer wall of a connecting cylinder of the existing focusing device can protrude out of the outer wall of a straight-in cylinder, so the length of the positioning column is longer, the straight-in cylinder is required to avoid the positioning column in the assembling process with the connecting cylinder, and the side wall of the straight-in cylinder is required to be provided with a completely through avoiding notch, so the arrangement results in the reduction of the strength of the straight-in cylinder, the straight-in cylinder is easy to damage in the using process, the positioning column of the existing focusing device is generally formed by integral injection molding with the connecting cylinder, the dimensional precision of the positioning column is lower, and the focusing precision is influenced, the focusing device disclosed by the invention can reduce the size of the positioning column 3 by arranging the positioning column extension component 7, the straight-in cylinder 4 is not required to be provided with a completely through avoiding groove 10, so that the strength, the size precision is higher, so that the focusing precision is improved;
The focusing device further comprises a focusing assembly 1, an adjusting cylinder 5 and a base 6, wherein an external thread is arranged on a connecting part of the focusing assembly 1, an internal thread matched with the external thread of the focusing assembly 1 is arranged on the inner wall of the connecting cylinder 2, the focusing assembly 1 is installed on the connecting cylinder 2 in a threaded fit mode, and when the connecting cylinder 2 moves along the straight-moving cylinder 4, the focusing assembly 1 is driven to move, so that focusing adjustment is achieved; the base 6 is fixedly installed at the bottom of the straight-advancing barrel 4, the connection mode between the base 6 and the straight-advancing barrel 4 is not limited, and in the embodiment, preferably, the base 6 and the straight-advancing barrel 4 are fixed through the screw 8, so that the assembly and disassembly are convenient; the inner wall of the adjusting cylinder 5 is provided with an adjusting groove 11 matched with the positioning column extension component 7, the adjusting groove 11 extends obliquely on the inner wall of the adjusting cylinder 5, the outer wall of the straight-in cylinder 4 is provided with a retaining ring, the adjusting cylinder 5 is rotatably sleeved outside the straight-in cylinder 4, the adjusting cylinder 5 is positioned between the base 6 and the retaining ring of the straight-in cylinder 4, the positioning column extension component 7 extends into the adjusting groove 11, the adjusting cylinder 5 can only rotate around the straight-in cylinder 4 and can not move along the axial direction of the straight-in cylinder 4, due to the matching effect of the positioning column extension component 7 and the adjusting groove 11, the adjusting groove 11 extends obliquely on the inner wall of the adjusting cylinder 5, when the adjusting cylinder 5 is rotated, the positioning column extension component 7 is pushed to move along the limiting strip-shaped hole 9, the positioning column 3 is driven to move along the avoiding groove 10, and the connecting cylinder 2 is driven to move along the straight-in the straight, focusing adjustment is realized;
The specific structure of the positioning column extension assembly 7 is not limited, and can be a sleeve, an inserted link and the like, in the embodiment, preferably, the positioning column extension assembly 7 is a sleeve, the sleeve is sleeved outside the positioning column 3, and the connection mode between the sleeve and the positioning column 3 is not limited, in the embodiment, preferably, the sleeve and the positioning column 3 are fixed through a screw 8;
The number of the positioning pillars 3 is not limited, and in this embodiment, preferably, three positioning pillars 3 are provided and are uniformly distributed on the outer wall of the connecting cylinder 2.
The working principle of the invention is as follows: the connecting cylinder 2 with the focusing assembly 1 is clamped into a limiting strip-shaped hole 9 through a positioning column extension assembly 7, an adjusting groove 11 of an inner adjusting cylinder 5 is clamped into a sleeve 7 and assembled into a straight-advancing cylinder 4, then a base 6 is locked on the straight-advancing cylinder 4 through a screw 8, so that the straight-advancing cylinder 4 is limited to move axially, the adjusting cylinder 5 is rotated left and right, and the positioning column extension assembly 7 is driven to move up and down to realize the focusing function through the matching of the positioning column extension assembly 7 and the adjusting groove 11 and the left and right rotation of the adjusting cylinder 5.
Example 2
A lens barrel comprising the focusing device as described in embodiment 1, wherein the focusing device is simple in structure, low in cost, and easy to assemble and disassemble, so that the lens barrel is more convenient to use. Because the lens comprises the focusing device, the precision of the positioning column of the focusing device is higher, so that the precision of the lens is improved, and the strength of the straight-moving cylinder is higher, so that the service life of the lens is prolonged.
In addition, as the positioning column extension assembly can be machined by mechanical turning, the dimensional accuracy is higher, and the focusing accuracy is favorably improved.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a focusing device, includes connecting cylinder (2) and straight section of thick bamboo (4), be provided with reference column (3) on connecting cylinder (2) outer wall, the inner wall of straight section of thick bamboo (4) is seted up dodges groove (10) of dodging reference column (3), and connecting cylinder (2) slide through the cooperation of dodging groove (10) and reference column (3) embolias straight section of thick bamboo (4) in, set up on the outer wall of straight section of thick bamboo (4) and dodge spacing strip hole (9) that groove (10) position corresponds, spacing strip hole (9) link up with dodging groove (10) mutually, focusing device still includes reference column extension assembly (7), and reference column extension assembly (7) one end is passed spacing strip hole (9) and is connected with reference column (3), and the other end protrusion in the outer wall of straight section of thick bamboo (4) of locating column extension assembly (7).
2. The focusing device according to claim 1, further comprising a focusing assembly (1), an adjusting cylinder (5) and a base (6), wherein a connecting portion of the focusing assembly (1) is provided with an external thread, an inner wall of the connecting cylinder (2) is provided with an internal thread matched with the external thread of the focusing assembly (1), the focusing assembly (1) is installed on the connecting cylinder (2) through thread matching, the base (6) is fixedly installed at the bottom of the straight-advancing cylinder (4), an inner wall of the adjusting cylinder (5) is provided with an adjusting groove (11) matched with the positioning column extension assembly (7), the adjusting groove (11) extends obliquely on the inner wall of the adjusting cylinder (5), the outer wall of the straight-advancing cylinder (4) is provided with a retaining ring, the adjusting cylinder (5) is rotatably sleeved outside the straight-advancing cylinder (4), and the adjusting cylinder (5) is located between the base (6) and the retaining ring of the straight-advancing cylinder (4), the positioning column extension assembly (7) extends into the adjusting groove (11).
3. Focusing device according to claim 2, characterized in that the base (6) is screwed to the linear cylinder (4).
4. The focusing device according to claim 1, 2 or 3, wherein the positioning post extension element (7) is a sleeve, and the sleeve is sleeved outside the positioning post (3).
5. The focusing device according to claim 4, characterized in that the sleeve and the positioning post (3) are fixed by screws.
6. Focusing device according to claim 5, characterized in that the positioning posts (3) are three in total and evenly distributed on the outer wall of the connecting cylinder (2).
7. A lens barrel comprising the focusing apparatus as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557767.7A CN110543062B (en) | 2019-06-26 | 2019-06-26 | Focusing device and lens comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557767.7A CN110543062B (en) | 2019-06-26 | 2019-06-26 | Focusing device and lens comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110543062A true CN110543062A (en) | 2019-12-06 |
| CN110543062B CN110543062B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910557767.7A Active CN110543062B (en) | 2019-06-26 | 2019-06-26 | Focusing device and lens comprising same |
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| Country | Link |
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| CN (1) | CN110543062B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200638152A (en) * | 2005-04-22 | 2006-11-01 | Hon Hai Prec Ind Co Ltd | Dual regions focusing device |
| CN102162899A (en) * | 2011-05-23 | 2011-08-24 | 天津港东科技发展股份有限公司 | Integral double-lens focusing device |
| CN204613495U (en) * | 2015-04-30 | 2015-09-02 | 广州长步道光电科技有限公司 | A kind of mechanism being applicable to low range, high picture element scan tight shot |
| CN204613556U (en) * | 2015-04-02 | 2015-09-02 | 广州长步道光电科技有限公司 | Focusing mechanism of optical system |
| CN107797221A (en) * | 2017-09-29 | 2018-03-13 | 东莞市维斗科技股份有限公司 | Automatic focusing focusing lens module |
| CN208902950U (en) * | 2018-08-20 | 2019-05-24 | 中国科学院上海技术物理研究所 | Lens focusing and aperture adjust imaging device |
| CN210109537U (en) * | 2019-06-26 | 2020-02-21 | 广州长步道光电科技有限公司 | Focusing device and lens comprising same |
-
2019
- 2019-06-26 CN CN201910557767.7A patent/CN110543062B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200638152A (en) * | 2005-04-22 | 2006-11-01 | Hon Hai Prec Ind Co Ltd | Dual regions focusing device |
| CN102162899A (en) * | 2011-05-23 | 2011-08-24 | 天津港东科技发展股份有限公司 | Integral double-lens focusing device |
| CN204613556U (en) * | 2015-04-02 | 2015-09-02 | 广州长步道光电科技有限公司 | Focusing mechanism of optical system |
| CN204613495U (en) * | 2015-04-30 | 2015-09-02 | 广州长步道光电科技有限公司 | A kind of mechanism being applicable to low range, high picture element scan tight shot |
| CN107797221A (en) * | 2017-09-29 | 2018-03-13 | 东莞市维斗科技股份有限公司 | Automatic focusing focusing lens module |
| CN208902950U (en) * | 2018-08-20 | 2019-05-24 | 中国科学院上海技术物理研究所 | Lens focusing and aperture adjust imaging device |
| CN210109537U (en) * | 2019-06-26 | 2020-02-21 | 广州长步道光电科技有限公司 | Focusing device and lens comprising same |
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|---|---|
| CN110543062B (en) | 2024-02-02 |
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| CB02 | Change of applicant information |
Country or region after: China Address after: No. 8, Hongda Road, Yuhua District, Changsha City, 410000, Hunan Province Applicant after: Hunan Chiopt Optotech Co.,Ltd. Address before: 511442 2nd floor, No.1 Workshop, Jinshan Industrial Park, pengdizhuang, lirendong village, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU CHIOPT OPTOTECH Co.,Ltd. Country or region before: China |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240131 Address after: 510000 second floor, No. 1 plant, Jinshan Industrial Park, pengdizhuang, lirendong village, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Applicant after: Guangzhou changbudao Optical Technology Co.,Ltd. Country or region after: China Address before: No. 8, Hongda Road, Yuhua District, Changsha City, 410000, Hunan Province Applicant before: Hunan Chiopt Optotech Co.,Ltd. Country or region before: China |
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| TA01 | Transfer of patent application right |