CN108107538A - The focus control of Manual focusing camera lens - Google Patents
The focus control of Manual focusing camera lens Download PDFInfo
- Publication number
- CN108107538A CN108107538A CN201810120178.8A CN201810120178A CN108107538A CN 108107538 A CN108107538 A CN 108107538A CN 201810120178 A CN201810120178 A CN 201810120178A CN 108107538 A CN108107538 A CN 108107538A
- Authority
- CN
- China
- Prior art keywords
- moving cylinder
- camera lens
- focus control
- ring
- focusing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
A kind of focus control of Manual focusing camera lens, including：Rear moving cylinder, preceding moving cylinder, retainer ring and the focusing ring being socketed on successively from outside to inside outside camera lens, wherein：It is connected linkage by planetary gear set between focusing ring and preceding moving cylinder, the interior outside of preceding moving cylinder realizes that the different /V of angular speed links between rear moving cylinder and retainer ring by keyway arrangements respectively.The moving cylinder that the present apparatus is connected two layers along optical axis direction is opposite simultaneously or relative movement by way of focus, be greatly reduced the amount of movement of camera lens entirety so as to shorten camera lens overall length while enable the rotation of focusing ring polarizers of big angle scope so as to ensure that camera lens can accurately focus.
Description
Technical field
The present invention relates to the focusing dresses of a kind of technology in optical device field, specifically a kind of Manual focusing camera lens
It puts.
Background technology
The camera lens volume that existing mobile post coordination focalizes is all bigger, and weight is all heavier, when taking pictures can there are because
For camera lens weight is big and the phenomenon that completely camera lens cannot be kept to stablize, so as to cause captured image blur.Existing camera lens
Rotatably whole angular range is smaller and remote object distance angle adjustable scope is smaller for focusing ring.This is difficult to ensure accurate
Turn to required focusing position.
The content of the invention
The present invention proposes a kind of focus control of Manual focusing camera lens, passes through for deficiencies of the prior art
Two layers of moving cylinder being connected is focused along optical axis direction while opposite or relative movement mode, is greatly reduced camera lens
Whole amount of movement so as to shorten camera lens overall length while enable the rotation of focusing ring polarizers of big angle scope so as to ensureing
Camera lens can accurately focus.
The present invention is achieved by the following technical solutions：
The present invention includes：Rear moving cylinder, preceding moving cylinder, retainer ring and the focusing being socketed on successively from outside to inside outside camera lens
Ring, wherein：Be connected linkage by planetary gear set between focusing ring and preceding moving cylinder, the interior outside of preceding moving cylinder respectively with rear shifting
It is dynamic to realize that the different /V of angular speed links by keyway arrangements between cylinder and retainer ring.
The focusing ring is connected linkage with preceding moving cylinder, is engaged by planetary gear set, screw-driven or cam path are matched somebody with somebody
It closes and realizes.
The outside of the preceding moving cylinder is equipped with linear cam slot, the retainer ring be equipped with the first screw group with
Be engaged linkage.
The inside of the preceding moving cylinder is equipped with the second screw group, and the corresponding rear moving cylinder is equipped with curve cam slot
Cooperating therewith linkage and the rear moving cylinder are equipped with straight key, and the corresponding retainer ring is equipped with to connect with straight key
Tactile straight slot is to realize /V.
Description of the drawings
Fig. 1 a and Fig. 1 b are the phantom of the camera lens assembling structure；
Fig. 2 is installation diagram of the present invention；
Fig. 3 a and Fig. 3 b are respectively the comparison of polarizers of big angle scope scale expanded view of the present invention and existing camera lens scale expanded view
Figure；
Fig. 4 a are camera lens outside drawing of the present invention；
Fig. 4 b are retainer ring schematic diagram；
Fig. 5 is the expanded view of linear cam slot and curve cam slot；
Fig. 6 a and Fig. 6 b are straight keyway sectional view；
Fig. 7 and Fig. 8 is existing cinema scene schematic diagram；
In figure：Focusing ring 1, retainer ring 2, planetary gear 3, preceding moving cylinder 4, rear moving cylinder 5, internal gear 10, wide-angle model
Enclose scale 11, stop screw 22, linear cam slot 40, sun gear 42, straight key 51, the first screw group 20, the second screw group 41,
Curve cam slot 50, straight key 51.
Specific embodiment
As shown in Figure 1, the regulating device for the manual focusing lens being related to for the present embodiment, including：It covers successively from outside to inside
Rear moving cylinder 5, preceding moving cylinder 4, retainer ring 2 and the focusing ring 1 being connected to outside camera lens, wherein：Focusing ring 1 and preceding moving cylinder 4 it
Between linear cam slot 40 and the first screw group in retainer ring 2 be equipped with by planetary gear set engaged transmission, 4 outside of preceding moving cylinder
20 are engaged linkage, preceding 4 inside of moving cylinder be equipped with the second screw group 41 and the curve cam slot 50 in rear moving cylinder 5 and and
Straight key 51 is engaged linkage.
As shown in Fig. 2, the inside of the focusing ring 1 is equipped with internal gear 10, the internal gear 10 and planetary gear 3 and preceding
Sun gear 42 in moving cylinder 4 forms planetary gear set, by rotating focusing ring 1 so as to by internal gear 10 and planetary gear 3
With the gear of the sun gear 42 in preceding moving cylinder 4 engaged transmission so as to the smooth rotation of moving cylinder 4 before driving.
As shown in figure 3, the focusing ring 1 is equipped with the scale 11 of polarizers of big angle scope, moving cylinder 5 after which corresponds to
Upper different amount of movement.
As shown in Fig. 1~Fig. 6, the screw that the first screw group 20 is distributed in by three in retainer ring 2 forms, relatively
The preceding moving cylinder 4 described in ground is answered to be equipped with three linear cam slots 40 of circumferentially decile arrangement；When focusing ring 1 is from remote object
When being rotated away from the past closely object distance direction in direction, by the internal gear 10 and planetary gear 3 and preceding moving cylinder 4 of focusing ring 1
Sun gear 42 engaged transmission so that preceding moving cylinder 4 and focusing ring 1 are rotated toward opposite direction, according to the first screw group 20 with
In preceding moving cylinder 4 cooperation of linear cam slot 40 and the direction of linear cam slot 40 so as to before ensureing moving cylinder 4 along guide ring
Track movement so as to being moved backward along optical axis direction.
As shown in fig. 6, the screw that the second screw group 41 is distributed in by three in preceding moving cylinder 4 forms, it is corresponding
Rear moving cylinder 5 described in ground is equipped with the curve cam slot 50 and straight key 51, the retainer ring 2 of circumferentially decile arrangement
It is equipped with the straight slot 21 being in contact with straight key 51.
The movement of the preceding moving cylinder 4 can be decomposed into around optical axis rotation and two moved backward are along optical axis direction
Kind movement, wherein：According to the second screw group 41 and the cooperation of curve cam slot 50 so that rear moving cylinder 5 should be also done along optical axis
It moves backward and the trend of rotation along optical axis, but since straight key 51 is arranged in the straight slot 21 of retainer ring 2 so that it is rear to move
Dynamic cylinder 5 can only be moved back and forth along optical axis direction.Due to straight key 51 and 5 upper curve of cooperation and rear moving cylinder of straight slot 21
The orientation of cam path 50 is so that rear moving cylinder 5 should be converted into rear moving cylinder 5 along optical axis simultaneously with preceding moving cylinder 4
It is moved forward along optical axis direction, and the shape of curve cam slot 50 is slope by zero gradual increased curve, which is y
=ax2, wherein y is displacement, and x is the angle rotated, so that rear translational speed when remote object end position of moving cylinder 5
Slowly, gradually become the nearly translational speed moving cylinder 5 after that gradually becomes faster then as object distance to move in the case where rotating identical angle
Different distance, so as to fulfill the variable motion of rear moving cylinder 5.So when focusing ring 1 is from remote object distance to closely object distance
When direction rotates, preceding moving cylinder 4 and rear moving cylinder 5 move toward one another, and so not only ensure that a wide range of Angle focusing but also big
The big volume for shortening total displacement distance, reducing camera lens.Moving cylinder 4 and institute's shape after rear 5 transposition of moving cylinder before this
Into the Forward of last layer guide cylinder, move similar motion mode after next layer of guide cylinder and still set up.
As shown in Fig. 3~Fig. 4, the retainer ring 2 is equipped with to limit the stop screw of the angle of the rotation of focusing ring 1
22。
Such as the focusing ring angle of rotation that Fig. 7 and Fig. 8 is two kinds of existing cinema scenes, the as can be seen cinema scene in Fig. 7
Degree is significantly less than the cinema scene of the present invention, and the scale angular range of remote object distance is much smaller than the movie mirror of the present invention
Head.The remote object distance scale angular range of cinema scene in Fig. 8 is much smaller than cinema scene of the invention.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (8)
1. a kind of focus control of Manual focusing camera lens, which is characterized in that including：It is socketed on successively outside camera lens from outside to inside
Moving cylinder, preceding moving cylinder, retainer ring and focusing ring afterwards, wherein：Focusing ring is connected linkage with preceding moving cylinder, preceding moving cylinder it is inside and outside
It is linked respectively between rear moving cylinder and retainer ring by the different /V of keyway arrangements realization angular speed side；
The inside of the preceding moving cylinder is equipped with the second screw group, and the corresponding rear moving cylinder is equipped with curve cam slot therewith
It is engaged linkage and the rear moving cylinder is equipped with straight key, the corresponding retainer ring is equipped with what is be in contact with straight key
Straight slot is to realize /V.
2. focus control according to claim 1, it is characterized in that, the outside of the preceding moving cylinder is equipped with linear cam
Slot, the corresponding retainer ring are equipped with the first cooperating therewith linkage of screw group.
3. focus control according to claim 1, it is characterized in that, the focusing ring is connected linkage with preceding moving cylinder, leads to
Planetary gear set engagement, screw-driven or cam path cooperation is crossed to realize.
4. focus control according to claim 3, it is characterized in that, the planetary gear set includes:It is arranged at focusing ring
The internal gear of inside, planetary gear and the sun gear before being arranged in moving cylinder, by rotating focusing ring so as to by interior
The gear of gear and planetary gear and the sun gear in preceding moving cylinder engaged transmission is so as to the smooth rotation of moving cylinder before driving.
5. focus control according to claim 2, it is characterized in that, the first screw group is distributed in retainer ring by three
On screw composition, correspondingly the preceding moving cylinder be equipped with circumferentially decile arrangement three linear cam slots；Work as tune
The remote object distance directions of Jiao Huancong toward closely object distance direction rotate when, by the internal gear of focusing ring and planetary gear and preceding
The engaged transmission of sun gear in moving cylinder is so that preceding moving cylinder is rotated with focusing ring toward opposite direction, according to the first screw group
With the direction of the cooperation of linear cam slot and linear cam slot in preceding moving cylinder so as to rail of the moving cylinder along guide ring before ensureing
Mark movement along optical axis direction so as to move backward.
6. focus control according to claim 1, it is characterized in that, the second screw group is distributed in by three
In preceding moving cylinder screw composition, correspondingly the rear moving cylinder be equipped with circumferentially decile arrangement curve cam slot with
And straight key, the retainer ring are equipped with the straight slot being in contact with straight key.
7. the focus control according to claim 1 or 6, it is characterized in that, the curve cam slot is gradual by zero for slope
Increased curve, the curve equation are y=ax2, wherein y is displacement, and x is the angle rotated so that rear moving cylinder is rotating
Different distances, i.e. variable motion are moved under identical angle.
8. focus control according to claim 7, it is characterized in that, the focusing ring is equipped with the quarter of polarizers of big angle scope
Degree, the scale correspond to after in moving cylinder variable motion amount of movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120178.8A CN108107538B (en) | 2018-02-07 | 2018-02-07 | Focusing device of manual focusing lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120178.8A CN108107538B (en) | 2018-02-07 | 2018-02-07 | Focusing device of manual focusing lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108107538A true CN108107538A (en) | 2018-06-01 |
| CN108107538B CN108107538B (en) | 2020-04-14 |
Family
ID=62221864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120178.8A Active CN108107538B (en) | 2018-02-07 | 2018-02-07 | Focusing device of manual focusing lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108107538B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407260A (en) * | 2018-12-11 | 2019-03-01 | 嘉兴中润光学科技有限公司 | A kind of closed-loop control device and closed loop control method of lens driving |
| CN116184609A (en) * | 2023-03-08 | 2023-05-30 | 广州长步道光学科技有限公司 | External directional high-precision focusing ring of camera lens |
Citations (9)
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|---|---|---|---|---|
| CN2443396Y (en) * | 2000-10-20 | 2001-08-15 | 台湾视讯***股份有限公司 | Lens focal distance regulating structure |
| JP2003021780A (en) * | 2001-07-10 | 2003-01-24 | Nidec Copal Corp | Camera apparatus |
| CN1651961A (en) * | 2004-02-03 | 2005-08-10 | 宾得株式会社 | Rotation transfer mechanism and a zoom camera incorporating the rotation transfer mechanism |
| CN201322818Y (en) * | 2008-12-15 | 2009-10-07 | 福建福光数码科技有限公司 | Synchronous focusing lens |
| CN102998769A (en) * | 2011-09-07 | 2013-03-27 | 奥林巴斯映像株式会社 | Lens barrel |
| CN103105662A (en) * | 2011-10-07 | 2013-05-15 | 奥林巴斯映像株式会社 | Lens barrel |
| CN203117503U (en) * | 2013-03-28 | 2013-08-07 | 浙江大华技术股份有限公司 | Zoom lens |
| CN203178545U (en) * | 2013-03-28 | 2013-09-04 | 浙江大华技术股份有限公司 | Zoom lens and zoom camera |
| CN207799213U (en) * | 2018-02-07 | 2018-08-31 | 嘉兴中润光学科技有限公司 | The focus control of Manual focusing camera lens |
-
2018
- 2018-02-07 CN CN201810120178.8A patent/CN108107538B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443396Y (en) * | 2000-10-20 | 2001-08-15 | 台湾视讯***股份有限公司 | Lens focal distance regulating structure |
| JP2003021780A (en) * | 2001-07-10 | 2003-01-24 | Nidec Copal Corp | Camera apparatus |
| CN1651961A (en) * | 2004-02-03 | 2005-08-10 | 宾得株式会社 | Rotation transfer mechanism and a zoom camera incorporating the rotation transfer mechanism |
| CN201322818Y (en) * | 2008-12-15 | 2009-10-07 | 福建福光数码科技有限公司 | Synchronous focusing lens |
| CN102998769A (en) * | 2011-09-07 | 2013-03-27 | 奥林巴斯映像株式会社 | Lens barrel |
| CN103105662A (en) * | 2011-10-07 | 2013-05-15 | 奥林巴斯映像株式会社 | Lens barrel |
| CN203117503U (en) * | 2013-03-28 | 2013-08-07 | 浙江大华技术股份有限公司 | Zoom lens |
| CN203178545U (en) * | 2013-03-28 | 2013-09-04 | 浙江大华技术股份有限公司 | Zoom lens and zoom camera |
| CN207799213U (en) * | 2018-02-07 | 2018-08-31 | 嘉兴中润光学科技有限公司 | The focus control of Manual focusing camera lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407260A (en) * | 2018-12-11 | 2019-03-01 | 嘉兴中润光学科技有限公司 | A kind of closed-loop control device and closed loop control method of lens driving |
| CN116184609A (en) * | 2023-03-08 | 2023-05-30 | 广州长步道光学科技有限公司 | External directional high-precision focusing ring of camera lens |
| CN116184609B (en) * | 2023-03-08 | 2023-11-21 | 广州长步道光学科技有限公司 | External directional high-precision focusing ring of camera lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108107538B (en) | 2020-04-14 |
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Address after: 314000 No.188, Taojing Road, Gaozhao street, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Zhongrun Optical Technology Co.,Ltd. Address before: 314000 Room 2F201-6, Building 6, Jiaxing Photovoltaic Science Park, 1288 Kanghe Road, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: JIAXING ZHONGRUN OPTICAL SCIENCE AND TECHNOLOGY Co.,Ltd. |
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