CN110543062B - Focusing device and lens comprising same - Google Patents
Focusing device and lens comprising same Download PDFInfo
- Publication number
- CN110543062B CN110543062B CN201910557767.7A CN201910557767A CN110543062B CN 110543062 B CN110543062 B CN 110543062B CN 201910557767 A CN201910557767 A CN 201910557767A CN 110543062 B CN110543062 B CN 110543062B
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- cylinder
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- groove
- reference column
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 14
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 14
- 241001330002 Bambuseae Species 0.000 claims abstract description 14
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 14
- 239000011425 bamboo Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection 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 cylinder; be provided with the reference column on the connecting cylinder outer wall, the inner wall of straight advance the section of thick bamboo is offered and is dodged the groove of dodging of reference column, and the connecting cylinder is slided through dodging the cooperation of groove and reference column and is emboliaed in straight advance the section of thick bamboo, offered on the outer wall of straight advance section of thick bamboo and dodge the spacing strip hole that the groove position corresponds, spacing strip hole link up mutually with dodging the groove, focusing device still includes reference column extension assembly, and reference column extension assembly one end is passed spacing strip hole and is connected with the reference column, and the other end protrusion of reference column extension assembly is in the outer wall of straight advance the section of thick bamboo. The invention also discloses a lens comprising the focusing device. According to the invention, the size of the positioning column is reduced, so that a completely through avoiding groove does not need to be formed in the straight cylinder, the strength of the straight cylinder is improved, and in addition, the positioning column extension assembly can be machined through mechanical turning, so that the dimensional accuracy is higher, and the focusing accuracy is 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 widespread use of lenses in projectors, industrial inspection, intelligent transportation, scanning and copying devices, and photographic cameras, the need for adapting the lenses to different object distances requires focusing functions, i.e., a focusing structure for adjusting the lenses and the image plane.
The common focusing devices on the market are 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 comprising the same, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a focusing device, includes connecting cylinder and straight section of thick bamboo, be provided with the reference column on the connecting cylinder outer wall, the inner wall of straight section of thick bamboo has been seted up and has been 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 section of thick bamboo in, set up on the outer wall of straight section of thick bamboo and dodge the spacing strip hole that the groove position corresponds, spacing strip hole link up mutually with dodging the groove, focusing device still includes reference column extension assembly, and reference column extension assembly one end is passed spacing strip hole and is connected with the reference column, and the other end protrusion of reference column extension assembly is in the outer wall of straight section of thick bamboo.
As a further scheme of the invention: the automatic focusing device comprises a base, a positioning column extending component, a connecting part, a base and a focusing assembly, wherein the connecting part of the focusing assembly is provided with external threads, the inner wall of the connecting cylinder is provided with internal threads matched with the external threads of the focusing assembly, the focusing assembly is installed on the connecting cylinder through threaded fit, the base is fixedly installed at the bottom of the straight-ahead cylinder, the inner wall of the adjusting cylinder is provided with an adjusting groove matched with the positioning column extending component, the adjusting groove extends obliquely on the inner wall of the adjusting cylinder, the outer wall of the straight-ahead cylinder is provided with a check ring, the adjusting cylinder is rotationally sleeved outside the straight-ahead cylinder, the adjusting cylinder is located between the base and the check ring of the straight-ahead cylinder, and the positioning column extending component extends into the adjusting groove.
As still further aspects of the invention: the base is fixed with the straight cylinder through screws.
As still further aspects of the invention: the positioning column extension assembly is a sleeve, and the sleeve is sleeved outside the positioning column.
As still further aspects of the invention: the sleeve is fixed with the positioning column through screws.
As still further aspects of the invention: the number of the positioning columns is three, and the positioning columns are uniformly 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: according to the invention, the size of the positioning column is reduced, so that a completely through avoiding groove does not need to be formed in the straight cylinder, the strength of the straight cylinder is improved, and in addition, the positioning column extension assembly can be machined through mechanical turning, so that the dimensional accuracy is higher, and the focusing accuracy is improved.
Drawings
Fig. 1 is a schematic structural view of a focusing device.
Fig. 2 is a cross-sectional view of the focusing device.
Fig. 3 is a schematic structural view of a connecting tube in the focusing device.
Fig. 4 is a schematic structural view of an adjustment cylinder in the focusing apparatus.
Fig. 5 is a schematic structural view of a straight cylinder in the focusing device.
Fig. 6 is a schematic structural diagram of a base in the focusing device.
In the figure: 1-focusing assembly, 2-connecting cylinder, 3-reference column, 4-straight cylinder, 5-adjusting cylinder, 6-base, 7-reference column extension assembly, 8-screw, 9-spacing bar hole, 10-dodge groove, 11-adjusting groove.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the specific embodiments.
Example 1
Referring to fig. 1-6, a focusing device comprises a connecting cylinder 2 and a straight-moving cylinder 4, wherein a positioning column 3 is arranged on the outer wall of the connecting cylinder 2, an avoidance groove 10 for avoiding the positioning column 3 is formed in the inner wall of the straight-moving cylinder 4, the connecting cylinder 2 is sleeved into the straight-moving cylinder 4 through the cooperation sliding of the avoidance groove 10 and the positioning column 3, a limit strip-shaped hole 9 corresponding to the position of the avoidance groove 10 is formed in the outer wall of the straight-moving cylinder 4, the limit strip-shaped hole 9 is communicated with the avoidance groove 10, the focusing device further comprises a positioning column extension assembly 7, one end of the positioning column extension assembly 7 penetrates through the limit 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-moving cylinder 4, when focusing adjustment is performed, the positioning column extension assembly 7 moves along the limit strip-shaped hole 9, the positioning column 3 can be driven to move along the avoidance groove 10, and the connecting cylinder 2 is driven to move along the straight-moving cylinder 4, the invention realizes focusing adjustment, the existing focusing device is not provided with a positioning column extension component 7, the positioning column on the outer wall of the connecting cylinder can be protruded out of the outer wall of the straight-ahead cylinder, so the length of the positioning column is longer, the straight-ahead cylinder is required to avoid the positioning column in the process of being assembled with the connecting cylinder, the side wall of the straight-ahead cylinder is required to be provided with a completely through avoidance gap, the strength of the straight-ahead cylinder is reduced, the existing focusing device is easy to damage in the use process, the positioning column is generally integrally injection molded with the connecting cylinder, the dimensional accuracy of the positioning column is lower, the focusing accuracy is influenced, the size of the positioning column 3 can be reduced by arranging the positioning column extension component 7, the straight-ahead cylinder 4 is not required to be provided with a completely through avoidance groove 10, the strength of the straight-ahead cylinder is improved, in addition, the positioning column extension assembly 7 can be machined through mechanical turning, so that the dimensional accuracy is higher, and the focusing accuracy 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 at the 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 arranged on the connecting cylinder 2 in a threaded fit manner, and when the connecting cylinder 2 moves along the straight cylinder 4, the focusing assembly 1 is driven to move, so that focusing adjustment is realized; the base 6 is fixedly arranged at the bottom of the straight-moving cylinder 4, the connection mode between the base 6 and the straight-moving cylinder 4 is not limited, and in the embodiment, preferably, the base 6 and the straight-moving cylinder 4 are fixed through screws 8, so that the disassembly and assembly are convenient; the 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 obliquely extends on the inner wall of the adjusting cylinder 5, a retainer ring is arranged on the outer wall of the straight cylinder 4, the adjusting cylinder 5 is rotationally sleeved outside the straight cylinder 4, the adjusting cylinder 5 is positioned between the base 6 and the retainer ring of the straight cylinder 4, the positioning column extension assembly 7 stretches into the adjusting groove 11, the adjusting cylinder 5 can only rotate around the straight cylinder 4 and cannot move along the axial direction of the straight cylinder 4, due to the matching effect of the positioning column extension assembly 7 and the adjusting groove 11, and the adjusting groove 11 obliquely extends on the inner wall of the adjusting cylinder 5, when the adjusting cylinder 5 is rotated, the adjusting cylinder 5 is driven to move along the limiting strip-shaped hole 9, the positioning column 3 is driven to move along the avoiding groove 10, the connecting cylinder 2 is driven to move along the straight cylinder 4, and the focusing assembly 1 is driven to move, and focusing adjustment is realized;
the specific structure of the positioning column extension assembly 7 is not limited, and may be a sleeve, a plunger, etc., in this 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 this embodiment, preferably, the sleeve and the positioning column 3 are fixed by a screw 8;
the number of the positioning posts 3 is not limited, and in this embodiment, preferably, the number of the positioning posts 3 is three, and the positioning posts 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 the limiting strip-shaped hole 9 through the positioning column extension assembly 7, the adjusting groove 11 of the inner adjusting cylinder 5 is clamped into the sleeve 7 to be assembled into the straight-ahead cylinder 4, then the base 6 is locked on the straight-ahead cylinder 4 through the screw 8, so that the straight-ahead cylinder 4 is limited to axially move, the adjusting cylinder 5 is rotated left and right, and the positioning column extension assembly 7 is driven to move up and down through the cooperation of the positioning column extension assembly 7 and the adjusting groove 11, so that the focusing function is realized through the left and right rotation of the adjusting cylinder 5.
Example 2
A lens comprises the focusing device in embodiment 1, and the focusing device is simple in structure, low in cost and convenient to assemble and disassemble, so that the lens 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 cylinder is higher, so that the service life of the lens is prolonged.
According to the invention, the size of the positioning column is reduced, so that a completely through avoiding groove does not need to be formed in the straight cylinder, the strength of the straight cylinder is improved, and in addition, the positioning column extension assembly can be machined through mechanical turning, so that the dimensional accuracy is higher, and the focusing accuracy is 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 (2)
1. The utility model provides a focusing device, includes connecting cylinder (2) and straight advance section of thick bamboo (4), be provided with reference column (3) on connecting cylinder (2) outer wall, dodge groove (10) of dodging reference column (3) are seted up to the inner wall of straight advance section of thick bamboo (4), and connecting cylinder (2) are through dodging in the cooperation slip of groove (10) and reference column (3) embolia straight advance section of thick bamboo (4), set up spacing strip hole (9) that correspond with dodging groove (10) position on the outer wall of straight advance section of thick bamboo (4), spacing strip hole (9) link up with dodging groove (10), 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 of reference column extension assembly (7) is in the outer wall of straight advance section of thick bamboo (4);
the automatic focusing device is characterized by further comprising a focusing assembly (1), an adjusting cylinder (5) and a base (6), wherein an external thread is arranged at the 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) through threaded fit, the base (6) is fixedly installed at the bottom of the straight cylinder (4), an adjusting groove (11) matched with the positioning column extension assembly (7) is arranged on the inner wall of the adjusting cylinder (5), the adjusting groove (11) obliquely extends on the inner wall of the adjusting cylinder (5), a check ring is arranged on the outer wall of the straight cylinder (4), the adjusting cylinder (5) is rotatably sleeved outside the straight cylinder (4), the adjusting cylinder (5) is positioned between the base (6) and the check ring of the straight cylinder (4), and the positioning column extension assembly (7) extends into the adjusting groove (11);
the positioning column extension assembly (7) is a sleeve, and the sleeve is sleeved outside the positioning column (3);
the number of the positioning columns (3) is three, and the positioning columns are uniformly distributed on the outer wall of the connecting cylinder (2).
2. Focusing device according to claim 1, characterized in that the base (6) and the straight advance cylinder (4) are fixed by means of screws.
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 CN110543062A (en) | 2019-12-06 |
| CN110543062B true CN110543062B (en) | 2024-02-02 |
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| 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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| Publication number | Publication date |
|---|---|
| CN110543062A (en) | 2019-12-06 |
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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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