CN103364918B - A kind of optical lens linear motion zoom optical system - Google Patents
A kind of optical lens linear motion zoom optical system Download PDFInfo
- Publication number
- CN103364918B CN103364918B CN201310308970.3A CN201310308970A CN103364918B CN 103364918 B CN103364918 B CN 103364918B CN 201310308970 A CN201310308970 A CN 201310308970A CN 103364918 B CN103364918 B CN 103364918B
- Authority
- CN
- China
- Prior art keywords
- mirror
- group
- linear motion
- fixed frame
- varifocal
- 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.)
- Expired - Fee Related
Links
Abstract
The invention belongs to optical field, be specifically related to a kind of optical lens linear motion zoom optical system.The present invention includes inner be the fixed frame of cavity, the first mirror group being separately fixed at fixed frame two ends and the second mirror group, be arranged on varifocal mirror assembly between the first mirror group and the second mirror group, for the drive unit that provides varifocal mirror assembly to do reciprocating linear motion and be fixedly installed and be evenly distributed on fixed frame inside surface for supporting varifocal mirror assembly and at least three group guidance sets of guide effect.Logical the invention solves existing machinery to compensate continuous zooming optical device zoom accuracy low, manufacturing cost is high, equipment volume is large, the nonadjustable problem of curve movement.
Description
Technical field
The invention belongs to optical field, relate to a kind of optical lens zoom system, pancreatic system, be specifically related to a kind of optical lens linear motion zoom optical system.
Background technology
Mechanical compensation continuous zooming optical system, traditional method mainly adopts mechanical cam mechanism to realize the continuous vari-focus of varifocal optical lens.Mechanical cam kind is varied, is divided into disc cams, translating cam, cylindrical cam three class according to cam face.In camera motion mechanism, main employing column type cam.Circumferentially have two suite wire casings at cam, two groups of grooves are processed according to optical performance curve, and when zoom group is moved, compensating group does corresponding mobile to do compensation use.
In mechanical cam mechanism, mainly contain electric rotating machine, cam, guide finger, moving lens group and the outer lens barrel etc. with straight-line groove.By electric rotating machine output torque, by gear drive, moment of torsion is passed to cam, kinetic energy is passed to moving lens group by guide finger by cam.Because the straight-line groove on outer lens barrel limits the movement locus of guide finger, therefore during the positive and negative rotation of cam, moving lens group can be driven to do linear reciprocating motion.Varifocal optical lens, in zooming procedure, in order to obtain satisfied image quality, requires that the displacement of each kinetoscope group is accurate.Therefore accurate in order to ensure optical lens each kinetoscope group displacement in zooming procedure, then very high manufacturing accuracy requirement is proposed to cam, thus bring very large difficulty to the manufacture of cam.There is following subject matter in mechanical cam zoom mechanism:
(1) adopt cam accuracy requirement very high, mechanical processing difficulty is large, needs high-precision lathe and boring machine, improves cost.
(2) zoom balladeur train is easy to wear with compensation balladeur train, and long-time use can cause zoom accuracy to reduce.
(3) owing to have employed cogwheel gearing, and there is gap between guide finger and cam, cause backlash comparatively large, the problems such as volume is large, efficiency is low so whole mechanism exists, low precision.
(4), after design machines, curve can not be changed and adjust.
Summary of the invention
The invention provides a kind of optical lens linear motion zoom optical system, solve existing machinery compensation continuous zooming optical device zoom accuracy low, manufacturing cost is high, equipment volume is large, the nonadjustable problem of curve movement.
The technical scheme solved the problems of the technologies described above is as follows:
The invention provides a kind of optical lens linear motion zoom optical system, comprise inner be the fixed frame of cavity, the first mirror group being separately fixed at fixed frame two ends and the second mirror group, be arranged on varifocal mirror assembly between the first mirror group and the second mirror group, for the drive unit that provides varifocal mirror assembly to do reciprocating linear motion and be fixedly installed and be evenly distributed on fixed frame inside surface for supporting varifocal mirror assembly and at least three group guidance sets of guide effect; Described first mirror group and the second mirror group are parallel to each other;
Described varifocal mirror assembly comprises mobile mirror holder, the varifocal mirror group be arranged in mobile mirror holder endoporus; The position of the corresponding guidance set of described mobile mirror holder is provided with through hole; Described guidance set is through the through hole on mobile mirror holder;
Described drive unit is disposed with drive motor, transmission gear according to power transmission direction, the trapezoidal swivel nut gear in the gap that disappears, trapezoidal screw; The described gap that disappears trapezoidal swivel nut gear outside surface is provided with gear and is meshed with transmission gear; The described gap that disappears trapezoidal swivel nut gear inside surface is acme thread and is meshed with trapezoidal screw; One end of described trapezoidal screw is fixedly installed on mobile mirror holder.
Above-mentioned guidance set comprises the first ear seat, the second ear seat and the guide rod that is fixedly installed between the first ear seat and the second ear seat that are fixedly installed on fixed frame inside surface.
Above-mentioned guide rod is precise guide rail; Accurate guide pin bushing is provided with in the through hole of described mobile mirror holder; Described accurate guide pin bushing and precise guide rail suitable.
Above-mentioned drive unit also comprises the scrambler for controlling drive motor running accuracy.
Above-mentioned optical lens linear motion zoom optical system, also comprises stop means; Described stop means comprises the limit switch that is fixedly mounted on trapezoidal screw and to be fixedly installed on fixed frame and to be distributed in two banking stops of limit switch both sides; Ultimate range between described two banking stops is greater than the distance that varifocal mirror assembly moves reciprocatingly.
The invention has the advantages that:
1, the present invention adopts the trapezoidal swivel nut gear in gap that disappears, and effectively eliminates conventional geared transmission backlash large, the problem of low precision.
2, the present invention adopts the combination of precise guide rail and accurate guide pin bushing, substantially increases precision and the work efficiency of whole device.
3, the present invention is by programmed control zoom arrangement of mirrors according to optical design (or mensuration) curvilinear motion, greatly meets the requirement of precision tracking and measurement.
4, the present invention adopts limit switch, effectively controls the stroke that mobile mirror holder moves reciprocatingly on guide rod, can determine the reference position of varifocal mirror group accurately simultaneously.
Accompanying drawing explanation
Fig. 1 is structural scheme of mechanism of the present invention;
Fig. 2 is partial structurtes schematic diagram of the present invention.
Reference numeral: 1-fixed frame, 2-first mirror group, 3-second mirror group, 4-varifocal mirror assembly, 41-move mirror holder, 411-through hole, the accurate guide pin bushing of 4111-, 42-varifocal mirror group, 5-drive unit, 51-drive motor, 511-scrambler, 52-transmission gear, 53-disappear the trapezoidal swivel nut tooth in gap, 54-trapezoidal screw, 6-guidance set, 61-first ear seat, 62-second ear seat, 63-guide rod, 7-stop means, 71-limit switch, 72-banking stop.
Embodiment
The invention provides a kind of optical lens linear motion zoom optical system, see accompanying drawing 1, inner be the fixed frame 1 of cavity, the first mirror group 2 being separately fixed at fixed frame 1 two ends and the second mirror group 3, be arranged on varifocal mirror assembly 4 between the first mirror group 2 and the second mirror group 3, for the drive unit 5 that provides varifocal mirror assembly 4 to do reciprocating linear motion and be fixedly installed and be evenly distributed on fixed frame 1 inside surface for supporting varifocal mirror assembly 4 and at least three group guidance sets 6 of guide effect.
As shown in Figure 2, varifocal mirror assembly 4 comprise mobile mirror holder 41, the varifocal mirror group 42 be arranged in mobile mirror holder 41 endoporus; The position of the corresponding guidance set 6 of mobile mirror holder 41 is provided with through hole 411; Guidance set 6 is through the through hole 411 on mobile mirror holder 41.
Guidance set 6 comprises the first ear seat 61, the second ear seat 62 being fixedly installed on fixed frame 1 inside surface and the guide rod 63 be fixedly installed between the first ear seat 61 and the second ear seat 62.Especially, the guide rod 63 that the present invention adopts is precise guide rail; Accurate guide pin bushing 4111 is provided with in the through hole 411 of mobile mirror holder 41; Accurate guide pin bushing 4111 is suitable with precise guide rail.
As shown in Figure 2, drive unit 5 be disposed with according to power transmission direction, drive motor 51, transmission gear 52, the trapezoidal swivel nut gear 53 in the gap that disappears, trapezoidal screw 54; With reference to Fig. 2, the gap that disappears trapezoidal swivel nut gear 53 outside surface is provided with gear and is meshed with transmission gear 52; Gap trapezoidal swivel nut gear 53 inside surface that disappears is acme thread and is meshed with trapezoidal screw 54; One end of trapezoidal screw 54 is fixedly installed on mobile mirror holder 41.
See Fig. 1, preferably, for ensureing effectively to control the stroke that mobile mirror holder 41 moves reciprocatingly on guide rod 63, can determine the reference position of varifocal mirror group 42 accurately, this device also comprises stop means 7 simultaneously; Stop means 7 comprises the limit switch 71 that is fixedly mounted on trapezoidal screw 54 and to be fixedly installed on fixed frame 1 and to be distributed in two banking stops 72 of limit switch 71 both sides; Distance between banking stop 72 is more than or equal to the distance that varifocal mirror assembly 4 moves reciprocatingly.
During this device busy, after each parts being installed according to the position shown in Fig. 1, now be energized, drive motor 51 starts to rotate, drive motor 51 by transmission of torque to transmission gear 52, transmission gear 52 by power transmission to the trapezoidal swivel nut gear 53 in the gap that disappears, the trapezoidal swivel nut gear 53 in gap that disappears starts to rotate, and it is mobile to drive trapezoidal screw 54 to start by the acme thread of the gap that disappears trapezoidal swivel nut gear 53 inside surface, it is mobile that final trapezoidal screw 54 drives varifocal mirror assembly 4 to start on guidance set 6.(by controlling the rotating of drive motor thus realizing the to-and-fro movement of varifocal mirror assembly).
In the present invention, guidance set 6 installs precise guide rail, the position of the corresponding guidance set of mobile mirror holder is provided with the accurate guide pin bushing 4111 suitable with precise guide rail, thus ensure that the motion of varifocal mirror assembly 4 on guidance set 6 is more steady, reliably.
Achieve optical lens zooming procedure by the to-and-fro movement of varifocal mirror assembly 4 on guidance set 6.Drive motor 51 is also provided with scrambler 511, and what be used for controlling drive motor 51 turns running accuracy, thus controls the to-and-fro movement of varifocal mirror group 42.
In addition, for ensureing effectively to control the stroke that mobile mirror holder moves reciprocatingly on guide rod, the reference position of varifocal mirror group 42 can be determined accurately simultaneously, this device also comprises stop means 7, and generally this stop means 7 comprises the limit switch 71(travel switch be fixedly mounted on trapezoidal screw) and to be fixedly installed on fixed frame 1 and to be distributed in two banking stops 72 of limit switch both sides; When limit switch 71 touches banking stop 72, drive motor 51 starts reversion or stops, and causes varifocal mirror assembly 4 mobile or stopping in the other direction.Distance between banking stop 42 is more than or equal to the distance that varifocal mirror assembly 4 moves reciprocatingly.
Along with the to-and-fro movement of varifocal mirror assembly 4, achieve the zooming procedure of optical system, and this device low cost of manufacture, zoom accuracy is high.
Claims (4)
1. an optical lens linear motion zoom optical system, is characterized in that: comprise inner be the fixed frame of cavity, the first mirror group being separately fixed at fixed frame two ends and the second mirror group, be arranged on varifocal mirror assembly between the first mirror group and the second mirror group, for the drive unit that provides varifocal mirror assembly to do reciprocating linear motion and be fixedly installed and be evenly distributed on fixed frame inside surface for supporting varifocal mirror assembly and at least three group guidance sets of guide effect; Described first mirror group and the second mirror group are parallel to each other;
Described varifocal mirror assembly comprises mobile mirror holder, the varifocal mirror group be arranged in mobile mirror holder endoporus; The position of the corresponding guidance set of described mobile mirror holder is provided with through hole; Described guidance set is through the through hole on mobile mirror holder;
Described drive unit is disposed with drive motor, transmission gear according to power transmission direction, the trapezoidal swivel nut gear in the gap that disappears, trapezoidal screw; The described gap that disappears trapezoidal swivel nut gear outside surface is provided with gear and is meshed with transmission gear; The described gap that disappears trapezoidal swivel nut gear inside surface is acme thread and is meshed with trapezoidal screw; One end of described trapezoidal screw is fixedly installed on mobile mirror holder;
Described guidance set comprises the first ear seat, the second ear seat and the guide rod that is fixedly installed between the first ear seat and the second ear seat that are fixedly installed on fixed frame inside surface.
2. optical lens linear motion zoom optical system according to claim 1, is characterized in that: described guide rod is precise guide rail; Accurate guide pin bushing is provided with in the through hole of described mobile mirror holder; Described accurate guide pin bushing and precise guide rail suitable.
3. optical lens linear motion zoom optical system according to claim 2, is characterized in that: described drive unit also comprises the scrambler for controlling drive motor running accuracy.
4., according to the arbitrary described optical lens linear motion zoom optical system of claims 1 to 3, it is characterized in that: also comprise stop means; Described stop means comprises the limit switch that is fixedly mounted on trapezoidal screw and to be fixedly installed on fixed frame and to be distributed in two banking stops of limit switch both sides; Ultimate range between described two banking stops is greater than the distance that varifocal mirror assembly moves reciprocatingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310308970.3A CN103364918B (en) | 2013-07-22 | 2013-07-22 | A kind of optical lens linear motion zoom optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310308970.3A CN103364918B (en) | 2013-07-22 | 2013-07-22 | A kind of optical lens linear motion zoom optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103364918A CN103364918A (en) | 2013-10-23 |
| CN103364918B true CN103364918B (en) | 2015-07-29 |
Family
ID=49366656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310308970.3A Expired - Fee Related CN103364918B (en) | 2013-07-22 | 2013-07-22 | A kind of optical lens linear motion zoom optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103364918B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9509891B2 (en) * | 2014-10-21 | 2016-11-29 | Microsoft Technology Licensing, Llc | Controlling focus lens assembly |
| CN106405982A (en) * | 2016-12-16 | 2017-02-15 | 中国科学院长春光学精密机械与物理研究所 | Infrared camera mechanical structure |
| CN109725478A (en) * | 2017-10-30 | 2019-05-07 | 深圳光峰科技股份有限公司 | A kind of projector's motor-driven lens displacement structure and projector |
| CN110910757A (en) * | 2019-12-06 | 2020-03-24 | 江苏盐西新城教育产业项目开发有限公司 | Structure of focusing of eyeshield curved surface display screen |
| CN111897113B (en) * | 2020-07-31 | 2021-07-27 | 中国科学院西安光学精密机械研究所 | Underwater film zooming optical system |
| CN112013299B (en) * | 2020-08-17 | 2022-10-14 | 长春理工大学 | Collimating system multidimensional adjusting mechanism for small solar simulator |
| CN114647131B (en) * | 2020-12-18 | 2023-06-09 | 宁波舜宇光电信息有限公司 | Optical zoom camera module and corresponding portable terminal equipment |
| WO2022127630A1 (en) * | 2020-12-18 | 2022-06-23 | 宁波舜宇光电信息有限公司 | Optical zoom camera module and corresponding portable terminal device |
| CN114721111B (en) * | 2020-12-18 | 2023-08-11 | 宁波舜宇光电信息有限公司 | Optical zoom camera module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353634A (en) * | 1977-04-15 | 1982-10-12 | Jos. Schneider & Co. Optische Werke Kreuznach | Focusing mechanism for camera objective |
| CN2338760Y (en) * | 1998-06-25 | 1999-09-15 | 中国科学院光电技术研究所 | Linkage varifocus objective |
| CN1379260A (en) * | 2001-03-30 | 2002-11-13 | 奥林巴斯光学工业株式会社 | Lens drum |
| CN201845118U (en) * | 2010-09-22 | 2011-05-25 | 中山联合光电科技有限公司 | Optical regulation structure capable of optical zoom and auto focusing |
| CN203365779U (en) * | 2013-07-22 | 2013-12-25 | 中国科学院西安光学精密机械研究所 | Optical lens linear movement zoom optical system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08122613A (en) * | 1994-10-20 | 1996-05-17 | Fuji Photo Optical Co Ltd | Structure for lens moving mechanism |
| JPH09197241A (en) * | 1996-01-16 | 1997-07-31 | Fuji Photo Optical Co Ltd | Driving mechanism for photographic lens with variable focusing device |
-
2013
- 2013-07-22 CN CN201310308970.3A patent/CN103364918B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353634A (en) * | 1977-04-15 | 1982-10-12 | Jos. Schneider & Co. Optische Werke Kreuznach | Focusing mechanism for camera objective |
| CN2338760Y (en) * | 1998-06-25 | 1999-09-15 | 中国科学院光电技术研究所 | Linkage varifocus objective |
| CN1379260A (en) * | 2001-03-30 | 2002-11-13 | 奥林巴斯光学工业株式会社 | Lens drum |
| CN201845118U (en) * | 2010-09-22 | 2011-05-25 | 中山联合光电科技有限公司 | Optical regulation structure capable of optical zoom and auto focusing |
| CN203365779U (en) * | 2013-07-22 | 2013-12-25 | 中国科学院西安光学精密机械研究所 | Optical lens linear movement zoom optical system |
Non-Patent Citations (1)
| Title |
|---|
| "用于精密测量的自动变焦系统及标定方法的研究";杨小君等;《光子学报》;20051231;第34卷(第12期);第1921－1924页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103364918A (en) | 2013-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103364918B (en) | A kind of optical lens linear motion zoom optical system | |
| CN104656224A (en) | High-precision focusing mechanism for space optical remote sensor | |
| CN103364933A (en) | Digital cam continuous zooming system | |
| CN103969786A (en) | Varifocal mechanism of varifocal television system | |
| CN202330837U (en) | Automatic continuous zoom lens | |
| CN206409816U (en) | A kind of variable diameter straight tube road adaptive robot | |
| CN109451242A (en) | A kind of High Precision Automatic focus control | |
| CN105446054A (en) | Miniaturized focusing mechanism used for aerial camera | |
| CN208737077U (en) | Power zoom device | |
| CN203365779U (en) | Optical lens linear movement zoom optical system | |
| CN106154480B (en) | A kind of lens construction guaranteeing light axis consistency and high-precision airspace | |
| CN104076478B (en) | Space Object Detection lens focusing system | |
| CN104149084B (en) | A kind of three-branched-chainsix-degree-of-freedorobot six-degree-of-freedorobot robot driving mechanism | |
| CN102854603B (en) | Semi-nested planar cam focusing mechanism | |
| CN107234335B (en) | Focusing device for laser welding head | |
| CN104896050A (en) | Pitch angle adjusting device of picture frame | |
| CN101462240A (en) | High-precision dividing apparatus | |
| CN207656078U (en) | A kind of optical-fiber laser cutting machine self-adapting focusing cutting head | |
| CN201376206Y (en) | High-precision dividing device | |
| CN203502658U (en) | Digital cam continuous zooming system | |
| CN100357776C (en) | Optical lens driving apparatus | |
| CN204065532U (en) | Space Object Detection lens focusing system | |
| CN208469074U (en) | Based on the mobile 3D printing device of ball screw | |
| CN201800259U (en) | Four-sided 45 DEG guide rail precision adjusting mechanism for pressing machine | |
| CN203414619U (en) | Fiber fusion splicer cross core modulation mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20170722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |