CN103901510A - Rapid varifocal device based on double liquid lenses - Google Patents
Rapid varifocal device based on double liquid lenses Download PDFInfo
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- CN103901510A CN103901510A CN201410144158.6A CN201410144158A CN103901510A CN 103901510 A CN103901510 A CN 103901510A CN 201410144158 A CN201410144158 A CN 201410144158A CN 103901510 A CN103901510 A CN 103901510A
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Abstract
The invention relates to a rapid varifocal device based on double liquid lenses. The rapid varifocal device comprises a lens cone, a light extinction cover and a manual liquid lens electric control device, wherein the lens cone is formed by the two liquid lenses and a plurality of fixed lenses, the light extinction cover is fixed to the lens cone, an imaging device is installed at the tail end of the light extinction cover, and electric control over the manual lenses is achieved through the manual liquid lens electric control device. The focal lengths of the two liquid lenses can be changed by changing voltages applied to the electric liquid lenses and the angles of a manual liquid lens rotating device, and therefore the varifocal function of the whole rapid varifocal device is achieved.
Description
Technical field
The present invention relates to a kind of fast zoom based on biliquid lens apart from device.
Background technology
Variable focal length optical system is being played the part of key player in imaging system miscellaneous, and movement, the variation of refractive index or the change of lens shape that the variation of focal length can scioptics realize.In recent years, variable focal length optical system because of its target detection rapidly, continuously and flexibly, IMC ability easily, in Aero-Space with militaryly obtained applying more and more widely in waiting field imaging system.The burnt technology of modified tone can be divided into traditional zoom and novel zoom according to lens movement mode at present.Traditional zoom is made up of several groups of fixing lens subassemblies of focal length conventionally apart from optical system, the burnt process that modifies tone is to reach the burnt object of modified tone by the relative position of the mechanical hook-up change universal focus lens groups such as space cam, this class zoom system, pancreatic system all proposes harsh accuracy requirement to mechanical positioner and moving component, make traditional zoom system architecture complexity, and cost is higher, be difficult to realize Miniaturization Design simultaneously.Liquid lens is a kind of novel optical element, and it is to utilize certain control method to change refractive index or the shape of camera lens, has the advantages such as fast response time, low in energy consumption, noiseless, carrys out adjusting focal length with this, realizes zoom function, is a kind of brand-new zoom mode.Zoom system, pancreatic system based on liquid lens does not need to introduce mechanical moving element, can significantly simplify the aspect performances such as existing zoom system, pancreatic system, General Promotion steadiness, shock resistance, response speed and power consumption.
Summary of the invention
The object of the invention is in order to solve existing apparatus complex structure, be difficult to realize the problem of Miniaturization Design, propose a kind of microminiature fast zoom based on biliquid lens apart from device.
The object of the invention is to be achieved through the following technical solutions.
Fast zoom based on biliquid lens, apart from a device, comprising: lens barrel, delustring cover, manual liquid lens electric control gear.Its annexation is: delustring cover is fixed on lens barrel with jackscrew, and manual liquid camera lens electric control gear medium-height trestle, in order to fixed lens barrel and motor, is connected lens barrel rear end manual liquid rotation of lens device with power transmission toothed belt drive by flange with motor.
Lens barrel comprises front end fixed lens group, electrically powered liquid lens, rear end fixed lens group and manual liquid lens.Its annexation is: front end fixed lens group, electrically powered liquid lens, rear end fixed lens group, manual liquid lens connect successively, and its line of centres, by imaging sensor center, overlaps with systematic optical axis, and system is coaxial mechanical-optical setup.
Delustring cover, is fixedly mounted on lens barrel rear end, for delustring and installation image device;
Manual liquid lens electric control gear comprises support, stepper motor, flange and power transmission toothed belt drive.Its annexation is: stepper motor is fixed on support, and flange is fixed on lens barrel tail end, and two toothed belt wheels of power transmission toothed belt drive are individually fixed on flange and stepping motor rotating shaft, are connected by cingulum.
Described lens barrel is that fast zoom based on biliquid lens is apart from system, wherein light beam incides front end fixed lens group surface by front end fixed lens group, transmitted ray is after electrically powered liquid lens position reflects, Geometrical Optics is to the rear end fixed lens group in system, incident light wire harness is after the refraction of fixed lens group place, rear end, Geometrical Optics is to the manual liquid lens in system, and incident light wire harness reaches imaging sensor position.The surface curvature radius of electrically powered liquid lens and manual liquid lens can change, and its focal length is variable, thereby makes system focal length variations, realizes zoom.
Described delustring cover designs in the banded hole of side opening one, passes for cingulum.Delustring cover afterbody is processed into standard M12 × 0.5 interface, for cmos imaging chip is installed.
Described manual liquid lens electric control gear is used on manual liquid lens, realizing electronic control, thereby makes whole device program controlled, and automatically controlled step angle is 0.45 °.
Beneficial effect
Fast zoom based on biliquid lens of the present invention is apart from device, and chief component is by two liquid lenss and one group of lens barrel that fixed lens forms, and the relative position in lens barrel between each lens, without change, has been simplified apparatus structure, has realized microminaturization.The step angle of manual liquid lens electric control gear meets the requirement of continuous vari-focus.
Brief description of the drawings
Fig. 1 is the fast zoom that the present invention is based on biliquid lens schematic three dimensional views apart from device;
Fig. 2 is the structural drawing of facing of lens barrel;
Fig. 3 fixed lens group and liquid lens combine and realize not ejector half varifocal optical system of element;
Fig. 4 is the schematic three dimensional views of delustring cover;
Fig. 5 is the schematic three dimensional views of manual liquid lens electric control gear;
Fig. 6 is the fast zoom that the present invention is based on biliquid lens assembling schematic diagram apart from device.
Number in the figure
1-lens barrel, 2-delustring cover, 3-manual liquid lens electric control gear, 4-front end fixed lens group, 5-electrically powered liquid lens, 6-rear end fixed lens group, 7-manual liquid lens, 8-imaging sensor, 9-flange, 10-support, 11-stepper motor, 12-cingulum conveyer.
Embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
Embodiment
As shown in Figure 1, the fast zoom based on biliquid lens of the present embodiment comprises lens barrel 1, delustring cover 2, manual liquid lens electric control gear 3 apart from device.
Wherein, the lens barrel 1 of the present embodiment, as shown in Figure 2, is made up of electrically powered liquid lens, manual liquid lens and polylith fixed lens.
The fast zoom based on biliquid lens of the described lens barrel that the present invention realizes is apart from system, wherein front end fixed lens group 4, electrically powered liquid lens 5, rear end fixed lens group 6, manual liquid lens 7, imaging sensor 8 image plane center lines overlap with systematic optical axis, and system is coaxial mechanical-optical setup.Light beam is by 4 incidents of front end fixed lens group, and order, after electrically powered liquid lens 5, rear end fixed lens group 6 and manual liquid lens 7, focuses on imaging sensor 8.The surface curvature radius of electrically powered liquid lens 5 and manual liquid lens 7 can change, and its focal length is variable.What Fig. 3 described is to adopt deformable mirror and liquid lens to realize the system schema of zoom, as figure light incides fixed lens group 1 surface, transmitted ray is after liquid lens position reflects, Geometrical Optics is to the rear end fixed lens group 6 in system, incident light wire harness is after the 6 places refraction of rear end fixed lens group, Geometrical Optics is to the manual liquid lens 7 in system, and incident light wire harness reaches imaging sensor 8 positions.In Fig. 2, described 3 positions, position 1 is short Jiao, and position 2 is middle Jiao, and position 3 is for long burnt, and in the time that the element focal length of electrically powered liquid lens 5 and manual liquid lens 7 changes, system focal length variations, realizes zoom.
Delustring cover 2, as shown in Figure 4.This part is fixedly installed in lens barrel 1 tail end with jackscrew.The banded hole of 100 °, delustring cover side opening one central angle, width 6mm, for by cingulum and at utmost realize delustering functions.Afterbody is processed into standard M12*0.5 interface, for cmos imaging sensor 8 is installed.
Manual liquid lens electric control gear 3, as shown in Figure 5, by a flange 9, support 10, stepper motor 11, form with one group of power transmission toothed belt drive 12.
As shown in Figure 6, flange 9 is nested on the whirligig of lens barrel 1 afterbody manual liquid lens assembling mode; Support 10 is for supporting and fixed lens barrel 1; Stepper motor 11 is fixed on support 10; Two toothed belt wheels of cingulum wheelwork 4 are separately fixed on the axle and flange 9 of stepper motor 11, by cingulum connection for transmission; Delustring cover 2 use jackscrews are fixed on lens barrel 1, and cingulum is passed by the hollow part of delustring cover 2 sides.Entirety is the device shown in pie graph 1 after having assembled.
The Main Function of manual liquid lens electric control gear 3 is in fact to convert manual liquid lens to electrically powered liquid lens, thereby makes device entirety realize programmed control.Manual liquid focal length of lens adjustable extent is :-40mm-infinity-40mm, 120 ° of the maximum angle rotatables of rotation adjustment device.Adopt the stepper motor of 1.8 ° of step angles, the power transmission toothed belt drive that ratio of gear is 4, the automatically controlled step angle of manual liquid camera lens is 0.45 °, stepping accuracy ± 5%.
Claims (4)
1. the fast zoom based on biliquid lens, apart from a device, is characterized in that, comprising: lens barrel, delustring cover, manual liquid lens electric control gear; Its annexation is: delustring cover is fixed on lens barrel with jackscrew, and manual liquid camera lens electric control gear medium-height trestle, in order to fixed lens barrel and motor, is connected lens barrel rear end manual liquid rotation of lens device with power transmission toothed belt drive by flange with motor; Described lens barrel is that fast zoom based on biliquid lens is apart from system, wherein light beam incides front end fixed lens group surface by front end fixed lens group, transmitted ray is after electrically powered liquid lens position reflects, Geometrical Optics is to the rear end fixed lens group in system, incident light wire harness is after the refraction of fixed lens group place, rear end, Geometrical Optics is to the manual liquid lens in system, and incident light wire harness reaches imaging sensor position; The surface curvature radius of electrically powered liquid lens and manual liquid lens can change, and its focal length is variable, thereby makes system focal length variations, realizes zoom.
2. the fast zoom based on biliquid lens as claimed in claim 1, apart from device, is characterized in that, lens barrel comprises front end fixed lens group, electrically powered liquid lens, rear end fixed lens group and manual liquid lens; Its annexation is: front end fixed lens group, electrically powered liquid lens, rear end fixed lens group, manual liquid lens connect successively, and its line of centres, by imaging sensor center, overlaps with systematic optical axis, and system is coaxial mechanical-optical setup.
3. the fast zoom based on biliquid lens as claimed in claim 1, apart from device, is characterized in that, manual liquid lens electric control gear comprises support, stepper motor, flange and power transmission toothed belt drive.Its annexation is: stepper motor is fixed on support, and flange is fixed on lens barrel tail end, and two toothed belt wheels of power transmission toothed belt drive are individually fixed on flange and stepping motor rotating shaft, are connected by cingulum.
4. the fast zoom based on biliquid lens as claimed in claim 1, apart from device, is characterized in that, in the banded hole of side opening one of delustring cover, passes for cingulum; Delustring cover afterbody is processed into standard M12 × 0.5 interface, for cmos imaging sensor is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144158.6A CN103901510B (en) | 2014-04-11 | 2014-04-11 | Based on the fast zoom distance device of biliquid lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144158.6A CN103901510B (en) | 2014-04-11 | 2014-04-11 | Based on the fast zoom distance device of biliquid lens |
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| Publication Number | Publication Date |
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| CN103901510A true CN103901510A (en) | 2014-07-02 |
| CN103901510B CN103901510B (en) | 2016-01-20 |
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| CN201410144158.6A Expired - Fee Related CN103901510B (en) | 2014-04-11 | 2014-04-11 | Based on the fast zoom distance device of biliquid lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607246A (en) * | 2016-02-26 | 2016-05-25 | 北京理工大学 | Liquid zooming system based on micro motor |
| CN108803016A (en) * | 2018-06-11 | 2018-11-13 | 北京理工大学 | Zoom nest area's imaging method and system based on bifocal lens and liquid lens |
| CN113597571A (en) * | 2018-12-28 | 2021-11-02 | 奥普托图尼消费品股份公司 | Optical system comprising a lens with adjustable focal length |
Citations (4)
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| CN1882856A (en) * | 2003-10-23 | 2006-12-20 | 安德里斯·奥布雷斯基 | Imaging optics with adjustable optical power and method of adjusting an optical power of an optics |
| CN1963592A (en) * | 2006-11-29 | 2007-05-16 | 上海理工大学 | Optical design method for finite distance imaging by battery of lens of zoom taking pictures without mechanical movement |
| CN102388325A (en) * | 2009-04-10 | 2012-03-21 | 黑眼睛光学有限公司 | Variable power optical system |
| CN102436018A (en) * | 2006-12-15 | 2012-05-02 | 手持产品公司 | Apparatus and method comprising deformable lens element |
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2014
- 2014-04-11 CN CN201410144158.6A patent/CN103901510B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882856A (en) * | 2003-10-23 | 2006-12-20 | 安德里斯·奥布雷斯基 | Imaging optics with adjustable optical power and method of adjusting an optical power of an optics |
| CN1963592A (en) * | 2006-11-29 | 2007-05-16 | 上海理工大学 | Optical design method for finite distance imaging by battery of lens of zoom taking pictures without mechanical movement |
| CN102436018A (en) * | 2006-12-15 | 2012-05-02 | 手持产品公司 | Apparatus and method comprising deformable lens element |
| CN102388325A (en) * | 2009-04-10 | 2012-03-21 | 黑眼睛光学有限公司 | Variable power optical system |
Non-Patent Citations (1)
| Title |
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| 徐元韬 等: "双液体变焦透镜像差的测量研究", 《光学仪器》, vol. 35, no. 4, 31 August 2013 (2013-08-31), pages 38 - 42 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607246A (en) * | 2016-02-26 | 2016-05-25 | 北京理工大学 | Liquid zooming system based on micro motor |
| CN105607246B (en) * | 2016-02-26 | 2018-10-09 | 北京理工大学 | A kind of focus liquid system based on micromotor |
| CN108803016A (en) * | 2018-06-11 | 2018-11-13 | 北京理工大学 | Zoom nest area's imaging method and system based on bifocal lens and liquid lens |
| CN108803016B (en) * | 2018-06-11 | 2022-08-30 | 北京理工大学 | Zoom pit imaging method and system based on bifocal lens and liquid lens |
| CN113597571A (en) * | 2018-12-28 | 2021-11-02 | 奥普托图尼消费品股份公司 | Optical system comprising a lens with adjustable focal length |
| CN113597571B (en) * | 2018-12-28 | 2024-03-15 | 奈科特伦斯瑞士股份公司 | Optical system comprising a lens with adjustable focal length |
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| CN103901510B (en) | 2016-01-20 |
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Granted publication date: 20160120 Termination date: 20160411 |