CN1300616C - Integrative zoom lens - Google Patents
Integrative zoom lens Download PDFInfo
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- CN1300616C CN1300616C CNB031398057A CN03139805A CN1300616C CN 1300616 C CN1300616 C CN 1300616C CN B031398057 A CNB031398057 A CN B031398057A CN 03139805 A CN03139805 A CN 03139805A CN 1300616 C CN1300616 C CN 1300616C
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- zoom
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Abstract
The present invention discloses an integrative zoom lens, particularly a zoom lens of digital shoot equipment. The present invention comprises a zoom lens group, a zoom device, a viewing zoom device and a focusing device. Especially, a mobile image acquisition sensor seat of an image sensor provided with CCD / CMOS, etc. is directly moved to adjust the distance between the zoom lens and the sensor seat to realize a focusing function; a zoom orienting cylinder and a zoom mirror (lens) group are respectively provided with a lens optical axis and a translating slot and rib, which ensures that each zoom mirror (lens) group smoothly and uniformly moves in the way of straight line along the optical axis according to the rule provided by a zoom cam; a zoom cam cylinder of the viewing cylinder and a zoom cam cylinder are positioned and linked to guarantee the synchronization action of the lens and a viewer. By using the method of modularization and integration, all components are arranged and positioned on the zoom orienting cylinder; a zoom mechanical driving mechanism and a focusing mechanical driving mechanism are integrated and positioned in the present invention to form the integrative zoom lens.
Description
Technical field:
The present invention relates to a kind of integrated zoom lens that is used for digital filming (promptly adopt image sensors such as CCD/CMOS obtain picture information) equipment.The mobile image of special proposition obtains the focusing operating mechanism of parts.
Background technology:
Be subjected to the influence of film camera Focusing mechanism Design Mode, the zoom lens of present digital filming equipment (as digital camera, digital gamma camera etc.) or (the whole camera lens) of taking a mobile arrangement of mirrors (sheet) to organize or move whole zoom lens realization capture apparatus are focused and are operated.Why film camera adopts this mode to be because film is difficult to move, and does something against one's will.Because Zoom lens structure complexity, mechanism with AF function are implicative of each other, moving lens carries out automatically/electronic focusing operation, though it is required well to finish function, has complex structure, increases the shortcoming of cost, is unfavorable for batch process.
On the other hand, for obtaining favorable imaging quality, guarantee that each mirror (sheet) group steadily moves very crucial along optical axis in the zoom lens.The scheme that addresses this problem in the prior art is each has something to recommend him, but general more complicated all.
Again on the one hand, obtain the zoom information and the focusing information of zoom lens synchronously, the closed-loop control of the inner image processing of logarithmic code capture apparatus, zoom and focusing is most important.Prior art adopts the contact design more, has increased many chance failure.
Again on the one hand, use capture apparatus (as digital camera and digital gamma camera) to carry out zoom when finding a view, view finder must synchronous zoom.Zoom finder and zoom lens be connected and synchronously the mode of finding a view merit attention.
Again on the one hand, the zoom lens design must take into account performance, cost and productibility, and for reducing cost, industrialization manufactures a finished product in a large number and provides convenience.
Summary of the invention:
Purpose of the present invention is exactly in order to solve problems such as prior art unreasonable structure, cost height, and a kind of integrated zoom lens that is suitable for digital filming equipment is provided.
The present invention realizes that the scheme of above-mentioned purpose is: a kind of integrated zoom lens, comprise varifocal mirror group and coupled zoom lens control device, it is characterized in that: also comprise focusing mechanism, described focusing mechanism comprises mobile image sensor seat and coupled gear train, described gear train comprises that focusing drives nail, focusing cam canister, focusing micromachine, focusing reduction gearing mechanism, and mobile image sensor seat is used to place the image sensors such as CCD/CMOS of taking image; Focusing drives nail and passes the focusing cam canister, is fixed on the mobile image sensor seat; The focusing micromachine is used for driving the focusing reduction gearing mechanism, rotation focusing cam canister, drive nail through focusing mobile image sensor seat straight line is moved, described focusing mechanism links to each other with image sensor, and the distance that changes image sensor and zoom lens is to realize focusing.
Described focusing mechanism also comprises contactless focusing shift position sensor, is used for providing synchronously the moving parameter of mobile image sensor seat, uses for automatic or electronic focusing closed-loop control.
Described zoom lens control device comprises that zoom directional tube, zoom cam cylinder, zoom drive nail, zoom parameters sensor, zoom micromachine, zoom reduction gearing mechanism; Zoom drive nail passes zoom cam cylinder and zoom directional tube straight-line groove and is fixed on the varifocal mirror group; The zoom micromachine also is installed on the zoom directional tube, and the zoom reduction gearing mechanism is integrated on the zoom directional tube, and the zoom micromachine drives the zoom cam cylinder rotation through the zoom reduction gearing mechanism; In zoom cam cylinder when rotation, drive zoom and drive nail, zoom drive that nail drives the varifocal mirror group and under the restriction of zoom directional tube straight-line groove straight line move.
Have groove or fin on the varifocal mirror group periphery, fin on this groove or fin and the zoom directional tube correspondence position or groove are done minim gap and are cooperated.Described zoom lens control device also comprises contactless zoom parameters sensor, is used for synchronously providing zoom parameters, uses for automatic or power zoom closed-loop control.
Similar to the zoom lens moving lens, have groove on the mobile image sensor seat periphery, they cooperate with fin fine clearance on the correspondence position in the zoom directional tube; The focusing cam canister is enclosed within zoom positioning tube outside, passes behind the focusing cam canister and passes the zoom positioning tube, thereby be that straight line moves in the zoom positioning tube when making mobile image sensor seat mobile.
Described zoom micromachine, zoom reduction gearing mechanism, focusing micromachine and focusing reduction gearing mechanism are integrated on the zoom directional tube; Comprise that also Zoom finder is fixed on the zoom directional tube.
This device comprises that also the zoom cam cylinder of finding a view, Zoom finder move group, find a view zoom cam cylinder twice fin location and rotation synchronously on zoom cam cylinder; The Zoom finder module is installed on the platform of zoom directional tube setting; The outstanding cam rib of finding a view on the zoom cam cylinder is positioned at Zoom finder and moves the group clamp-shape groove; In zoom cam cylinder when rotation, drive the zoom cam cylinder of finding a view synchronously, and the zoom cam cylinder cam rib of finding a view drives Zoom finder synchronously and moves group and realize that synchronous zoom finds a view.
At the zoom cam cylinder and the zoom cam cylinder of finding a view location fin and recessed rib can be set respectively also, so that guarantee the Zoom finder synchronous zoom during rotation zoom cam cylinder, the vertical string of the zoom cam cylinder that prevents to find a view is moving.
Adopt the beneficial effect of above scheme: the present invention takes fixing whole zoom lens, and the mode of mobile image receiver spare, realized equally capture apparatus automatically/electronic focus function.Obviously, for digital filming equipment, mobile image receiver spare makes things convenient for manyly than mobile whole lens group, mobile image receiver spare carries out automatically/electronic focusing operation, well finish function required in, also have advantage simple in structure, that reduce cost, help producing in batches.
Adopt contactless focusing shift position sensor and zoom parameters sensor, can avoid contact, reduce the chance failure incidence focusing, zoom mechanism.
Minim gap between groove and the fin cooperates assurance inner each mirror of zoom lens (sheet) group to move along the optical axis straight line as far as possible.
This device can also guarantee zoom cam cylinder when rotation to drive the zoom cam cylinder of finding a view synchronously, and the zoom cam cylinder cam rib of finding a view drives Zoom finder synchronously and moves group and realize that synchronous zoom finds a view.
Description of drawings:
Fig. 1 is a zoom lens example three-dimensional exploded view of the present invention.
Fig. 2 is the synoptic diagram of the present invention's relevant straight line running fix fin and groove.
Fig. 3 is that the present invention is the another kind of zoom lens example three-dimensional exploded view that " mobile image sensor seat " realizes the focusing operation that directly moves.
Embodiment:
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
As Fig. 1-3, shown in integrated zoom lens comprise varifocal mirror group 1 and coupled zoom lens control device, it is characterized in that: also comprise focusing mechanism, described focusing mechanism links to each other with image sensor, drives image sensor and moves to realize focusing.According to the difference of gear train, following two kinds of embodiment can be arranged:
Embodiment one: as shown in Figure 1, described focusing mechanism comprises mobile image sensor seat 10, focusing cam canister 12, focusing micromachine 13, focusing reduction gearing mechanism 14, and mobile image sensor seat 10 is used to place the image sensors such as CCD/CMOS of taking image; The focusing micromachine is used for driving the focusing gear train, and rotation focusing cam canister 12 moves mobile image sensor seat 10 straight lines, to realize the focusing operation.
Described focusing mechanism also comprises contactless focusing shift position sensor, is used for providing synchronously the moving parameter of mobile image sensor seat 10, uses for automatic/electronic focusing closed-loop control.Described contactless focusing shift position sensor can adopt electro-optical pickoff, Magnetic Sensor etc.
Described zoom lens control device comprises that zoom directional tube 2, zoom cam cylinder 3, zoom drive nail 4, zoom parameters sensor 5, zoom micromachine 6, zoom reduction gearing mechanism 7; Zoom drive nail 4 passes zoom cam cylinder 3 and zoom directional tube 2 straight-line grooves and is fixed on the varifocal mirror group 1; Zoom micromachine 6 is installed on the zoom directional tube 2, and zoom reduction gearing mechanism 7 is integrated on the zoom directional tube 2, and zoom micromachine 6 drives zoom cam cylinder 3 rotations through zoom reduction gearing mechanism 7; Drive zoom during zoom cam cylinder 3 rotation and drive nail 4, zoom drive that nail 4 drives varifocal mirror groups 1 and under the restriction of zoom directional tube 2 straight-line grooves straight line move.
As Fig. 2, have groove or fin on varifocal mirror group 1 periphery, fin on this groove or fin and zoom directional tube 2 correspondence positions or groove are done minim gap and are cooperated.In like manner, also have groove on mobile image sensor seat 10 peripheries, they cooperate with fin fine clearance on the correspondence positions in the zoom directional tube 2; Focusing cam canister 12 is enclosed within zoom positioning tube 2 outsides, and focusing drives nail 11 and passes focusing cam canister 12 backs and pass zoom positioning tube 2, thereby is that straight line moves in zoom positioning tube 2 when mobile image sensor seat 10 is moved.In the present embodiment, described groove and fin respectively have three, preferably adopt the round end surface, so that smooth moving is convenient to cooperation, but also do not get rid of other shapes such as employing is square, dovetail groove.
Contactless zoom parameters sensor 5 (photoelectric sensor, Magnetic Sensor etc.) also can be set, be used for synchronously providing zoom parameters, use for automatic/power zoom closed-loop control.
Described zoom micromachine 6, zoom reduction gearing mechanism 7, focusing micromachine 13 and focusing reduction gearing mechanism 14 are integrated on the zoom directional tube 2; Comprise that also Zoom finder is fixed on the zoom directional tube 2.
The zoom cam cylinder 8 of finding a view, Zoom finder also can be set move group 9, find a view zoom cam cylinder 8 twice fin location and rotation synchronously on zoom cam cylinder 3; The Zoom finder module is installed on the platform of zoom directional tube 2 settings; The outstanding cam rib of finding a view on the zoom cam cylinder 8 is positioned at Zoom finder and moves group 9 clamp-shape grooves; During zoom cam cylinder 3 rotation, drive the zoom cam cylinder 8 of finding a view synchronously, the zoom cam cylinder 8 cam ribs of finding a view drive Zoom finder synchronously and move group 9 and realize that synchronous zoom find a view.
At the zoom cam cylinder 3 and the zoom cam cylinder 8 of finding a view location fin and recessed rib are set respectively, so that guarantee the Zoom finder synchronous zoom during rotation zoom cam cylinder 3, the zoom cam cylinder 8 vertical strings that prevent to find a view are moving.
Embodiment two: Fig. 3 proposes another linear drives " mobile image sensor seat 10 ", when realizing focusing operation on a large scale, can also reduce the difficulty of processing of part:
As shown in Figure 3, the micromachine 6 that is installed on the zoom directional tube 2 drives and reduction gear 7 driving screw mandrel rotations.Along with the rotation direction of screw mandrel, the screw thread on the mobile image sensor seat 10 drives sensor holder under the effect of 3 guide rails, and the accurate straight line in front and back moves.Contactless focusing shift position sensor 93 is housed in motor drives up mechanism, is used for providing synchronously the moving parameter of mobile image sensor seat 10, use for automatic/electronic focusing closed-loop control.At mobile image sensor seat 10 straight line moving directions, the non-contacting sensor that provides straight line to move forward and backward end points position signalling has been installed also.Described contactless focusing shift position sensor can adopt electro-optical pickoff, Magnetic Sensor etc.
This zoom lens focusing scheme helps simplifying the part processing difficulty, is convenient to realize focus automatically on a large scale control.
For reducing the cost of whole zoom lens, use injection-moulded plastic part as far as possible, industrialization manufactures a finished product in a large number, the present invention is integrated in the parts such as gear case of zoom and focusing mechanical transmission mechanism on the zoom directional tube, with the Zoom finder module, automatically/power zoom module, automatically/electronic Focusing module is installed on the zoom directional tube becoming one zoom lens.
Among the figure, 100 is image sensor or pcb board, and 30 is the positioning edge corresponding groove, and 40 is positioning edge, and 50 is the view finder module, and 92 is lens cap, and 93 are focusing shift position sensor (or claiming the focusing parameter sensors), and 94 are the focusing reducing gear.
Way processing, making that the present invention proposes are simple, and effect is remarkable.
Claims (9)
1. integrated zoom lens, comprise varifocal mirror group (1) and coupled zoom lens control device, it is characterized in that: also comprise focusing mechanism, described focusing mechanism comprises mobile image sensor seat (10) and coupled gear train, described gear train comprises that focusing drives nail (11), focusing cam canister (12), focusing micromachine (13), focusing reduction gearing mechanism (14), and mobile image sensor seat (10) is used to place the image sensors such as CCD/CMOS of taking image; Focusing drives nail (11) and passes focusing cam canister (12), is fixed on the mobile image sensor seat (10); Focusing micromachine (13) is used for driving focusing reduction gearing mechanism (14), rotation focusing cam canister (12), driving nail (11) through focusing moves mobile image sensor seat (10) straight line, described focusing mechanism links to each other with image sensor, and the distance that changes image sensor and zoom lens is to realize focusing.
2. integrated zoom lens as claimed in claim 1, it is characterized in that: also comprise contactless focusing shift position sensor, it links to each other with described focusing mechanism, is used for providing synchronously the moving parameter of mobile image sensor seat (10), uses for automatic/electronic focusing closed-loop control.
3. integrated zoom lens as claimed in claim 1 or 2 is characterized in that: described zoom lens control device comprises that zoom directional tube (2), zoom cam cylinder (3), zoom drive nail (4), zoom parameters sensor (5), zoom micromachine (6), zoom reduction gearing mechanism (7); Zoom drive nail (4) passes zoom cam cylinder (3) and zoom directional tube (2) straight-line groove and is fixed on the varifocal mirror group (1); Zoom micromachine (6) is installed on the zoom directional tube (2), and zoom reduction gearing mechanism (7) is integrated on the zoom directional tube (2), and zoom micromachine (6) drives zoom cam cylinder (3) rotation through zoom reduction gearing mechanism (7); In zoom cam cylinder (3) when rotation, drive zoom and drive nail (4), zoom drive that nail (4) drives varifocal mirror group (1) and under the restriction of zoom directional tube (2) straight-line groove straight line move.
4. integrated zoom lens as claimed in claim 3 is characterized in that: have groove or fin on varifocal mirror group (1) periphery, fin on this groove or fin and zoom directional tube (2) correspondence position or groove are done minim gap and are cooperated.
5. integrated zoom lens as claimed in claim 3, it is characterized in that: described zoom lens control device also comprises contactless zoom parameters sensor (5), be used for synchronously providing zoom parameters, use for automatic/power zoom closed-loop control and digital filming equipment calibration inner parameter.
6. integrated zoom lens as claimed in claim 3 is characterized in that: have groove or fin on mobile image sensor seat (10) periphery, they cooperate with fin or groove fine clearance on the interior correspondence position of zoom directional tube (2); Focusing cam canister (12) is enclosed within zoom positioning tube (2) outside, thereby is that straight line moves in zoom positioning tube (2) when making mobile image sensor seat (10) mobile.
7. integrated zoom lens as claimed in claim 3 is characterized in that: described zoom micromachine (6), zoom reduction gearing mechanism (7), focusing micromachine and focusing reduction gearing mechanism are integrated on the zoom directional tube (2); Comprise that also Zoom finder is fixed on the zoom directional tube (2).
8. integrated zoom lens as claimed in claim 3 is characterized in that: comprise that also the zoom cam cylinder of finding a view (8), Zoom finder move group (9), the zoom cam cylinder of finding a view (8) is gone up twice fin location and rotation synchronously through zoom cam cylinder (3); The Zoom finder module is installed on the platform that zoom directional tube (2) provides; The upward outstanding cam rib of the zoom cam cylinder (8) of finding a view is positioned at Zoom finder and moves group (9) clamp-shape groove; In zoom cam cylinder (3) when rotation, drive the zoom cam cylinder (8) of finding a view synchronously, and the zoom cam cylinder of finding a view (8) cam rib drives Zoom finder synchronously and moves group (9) realization synchronous zoom and find a view.
9. integrated zoom lens as claimed in claim 8, it is characterized in that: location fin and recessed rib are set respectively at zoom cam cylinder (3) and the zoom cam cylinder of finding a view (8), so that guarantee the Zoom finder synchronous zoom during rotation zoom cam cylinder (3), the vertical string of the zoom cam cylinder (8) that prevents to find a view is moving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031398057A CN1300616C (en) | 2003-07-15 | 2003-07-15 | Integrative zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031398057A CN1300616C (en) | 2003-07-15 | 2003-07-15 | Integrative zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1570689A CN1570689A (en) | 2005-01-26 |
| CN1300616C true CN1300616C (en) | 2007-02-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031398057A Expired - Fee Related CN1300616C (en) | 2003-07-15 | 2003-07-15 | Integrative zoom lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN1300616C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551501B (en) * | 2008-03-31 | 2011-01-19 | 香港理工大学 | Mechanical zoom lens device |
| JP5393300B2 (en) * | 2009-07-06 | 2014-01-22 | キヤノン株式会社 | Imaging device |
| CN102547084A (en) * | 2011-09-22 | 2012-07-04 | 上海兴禄科技实业有限公司 | Camera capable of achieving long-range shooting and super macro shooting |
| JP6184371B2 (en) * | 2014-05-29 | 2017-08-23 | ミネベアミツミ株式会社 | Lighting device |
| CN105991911A (en) * | 2016-07-29 | 2016-10-05 | 广东欧珀移动通信有限公司 | Control method, control device and electronic device |
| CN108322654B (en) * | 2016-07-29 | 2020-05-15 | Oppo广东移动通信有限公司 | Lens zooming method and device and mobile terminal |
| CN106254768B (en) * | 2016-07-29 | 2018-05-22 | 广东欧珀移动通信有限公司 | Microshot processing method, device and terminal device |
| CN107422450A (en) * | 2017-09-26 | 2017-12-01 | 中国科学院长春光学精密机械与物理研究所 | A kind of CCD focus adjusting mechanisms for visible optical imaging system |
| CN109254405A (en) * | 2018-10-31 | 2019-01-22 | 深圳多哚新技术有限责任公司 | A kind of helmet optical module |
| CN112241054A (en) * | 2019-07-17 | 2021-01-19 | 信泰光学(深圳)有限公司 | Zoom system |
| JP7110530B1 (en) * | 2021-04-02 | 2022-08-02 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッド | Mount and imaging system |
| CN113391425B (en) * | 2021-06-07 | 2022-11-04 | Tcl通讯（宁波）有限公司 | Zoom lens, periscopic lens and mobile phone camera |
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| US5592250A (en) * | 1994-06-21 | 1997-01-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Driving mechanism for a photograhing optical system |
| US6026245A (en) * | 1995-07-20 | 2000-02-15 | Olympus Optical Co., Ltd. | Imaging apparatus |
| CN1256432A (en) * | 1998-10-22 | 2000-06-14 | 佳能株式会社 | Optical system |
| CN1395145A (en) * | 2001-07-06 | 2003-02-05 | 雅客设计有限公司 | Control system of zoom lens of digital camera |
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2003
- 2003-07-15 CN CNB031398057A patent/CN1300616C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06201980A (en) * | 1992-12-29 | 1994-07-22 | Canon Inc | Lens driving device |
| US5592250A (en) * | 1994-06-21 | 1997-01-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Driving mechanism for a photograhing optical system |
| US6026245A (en) * | 1995-07-20 | 2000-02-15 | Olympus Optical Co., Ltd. | Imaging apparatus |
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| CN1395145A (en) * | 2001-07-06 | 2003-02-05 | 雅客设计有限公司 | Control system of zoom lens of digital camera |
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| CN1570689A (en) | 2005-01-26 |
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