CN102109658A - Automatic focusing method for laser night vision device - Google Patents
Automatic focusing method for laser night vision device Download PDFInfo
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- CN102109658A CN102109658A CN2009102451264A CN200910245126A CN102109658A CN 102109658 A CN102109658 A CN 102109658A CN 2009102451264 A CN2009102451264 A CN 2009102451264A CN 200910245126 A CN200910245126 A CN 200910245126A CN 102109658 A CN102109658 A CN 102109658A
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Abstract
The invention discloses an automatic focusing method for a laser night vision device. The method comprises the following steps of: A, judging the using environment of an imaging part; B, determining the used light source according to the using environment; C, reading zoom position information of an imaging lens; D, compensating the focusing value of the lens according to different zoom positions of the lens by a control panel; and E, matching the focusing value and the zoom value to finish automatic focusing of the lens. The problems that focusing is performed by manual intervention during day and night conversion and the focusing is not clear are solved. The repeated operation of frequent focusing during night monitoring of a night vision system is reduced, the same presetting bit can be adopted in the daytime and at night, and the day and night presetting bit is not needed to be set repeatedly.
Description
Technical field
The present invention relates to the technical field of video camera, be a kind of specifically by the different characteristics of Different Light wavelength, down focusing is compensated different the change doubly of camera lens, realize the Different Light illumination down camera lens become a doubly operation back automatic focus, thereby keep daytime, the presetting bit at night is provided with alternately and call after focus on clearly the laser night-vision device method of focusing automatically.
Background technology
Supervisory system mainly is made up of front-end equipment and this two large divisions of rear end equipment, front-end equipment usually by video camera, manually or parts such as motor-driven lens, The Cloud Terrace, protective cover, audiomonitor, alarm detector and multi-functional demoder form, Each performs its own functions for they, and get in touch (transmission video/audio signal and control, alerting signal) accordingly by the various device foundation of wired, wireless or Optical Fiber Transmission media and central control system.In the supervisory system of reality, these front-end equipments not necessarily use simultaneously, but realize that the video camera and the camera lens of the collection of monitoring image scene are absolutely necessary.Rear end equipment can be further divided into central control equipment and divide opertaing device.Front and back ends equipment has multiple constituted mode, and the transmission system between them can realize by multiple modes such as cable, optical fiber or microwaves.TV monitor system is made up of video camera part, hop, control section and demonstration and recording section four bulks.
The developing direction of video monitoring is outdoor, and the developing direction of outdoor monitoring is night vision, and along with the development of monitoring trades such as safe city, forest fire protection, intelligent transportation, not having luminous environment night, to carry out the demand of remote monitor increasing.The telephoto lens that remote night vision system is used mostly is Manual focusing, even there are indivedual camera lenses to support auto-focus function, also only can realize under visible natural lighting.The remote night vision system of tradition all exists night monitoring to focus on trouble, and the presetting bit of She Zhiing in the daytime is not fogging clear after calling night, or the not fogging clear problem in back is called in the presetting bit that is provided with night in the daytime.
The night vision system hardware platform comprises: automatic focus in the daytime, become doubly and focus on can electronicly control, with the camera lens of presetting bit information, the imaging video camera that is connected with camera lens, controls lens becomes doubly, the control panel of focusing, presetting bit operation, active or passive light source.
Existing night vision system implementation method: after in night monitoring, camera lens being become doubly operation, the need Manual focusing; Because day and night lighting light source difference, so same change doubly is worth the focus value difference of coupling, need be provided with between daytime, two groups of presetting bits at night also call respectively, could realize continuous monitoring round the clock.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of by the different characteristics of Different Light wavelength, down focusing is compensated different the change doubly of camera lens, realize the Different Light illumination down camera lens become a doubly operation back automatic focus, thereby keep daytime, the presetting bit at night is provided with alternately and call after focus on clearly the laser night-vision device method of focusing automatically.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
Laser night-vision device of the present invention is the method for focusing automatically, and the imaging moiety of above-mentioned watch-dog comprises: camera lens, collect the reflected light of surrounding environment, and the change that can realize electronic control is doubly and focus on; Video camera, the optical signalling that camera lens is collected is converted into vision signal; Control panel, the change of controls lens doubly and focusing operation, focusing method automatically comprises:
The environment for use of A, judgement imaging moiety;
B, the light source that determine to use according to environment for use, and judge the light signal kind that camera lens is collected with this;
C, read presetting bit information, imaging moiety is positioned and become doubly operation according to presetting bit information;
D, control panel compensate operation according to the focus value that collected optical source wavelength of camera lens and camera lens different become doubly camera lens;
E, a value is complementary with becoming doubly to make focus value, finishes the automatic focus of camera lens.
The present invention can also adopt following technical measures:
Described camera lens has auto iris, is realizing automatic focus under the operation in the daytime.
Under the condition of working at night, camera lens is realized automatic focus under infrared laser, Ultra-Violet Laser active night vision system or the passive night vision system of thermal imaging.
In the daytime identical with the monitoring presetting bit at night.
Advantage and good effect that the present invention has are:
Laser night-vision device of the present invention is the method for focusing automatically, by judging employed light source, by the different characteristics of different light rays wavelength, down focus value is compensated different the change doubly of camera lens, a focus value and a change times value are mated, realize a different light rays illumination camera lens change times operation back automatic focus down.By the judgement of environment, use light source and presetting bit information to external world, in the presetting bit invoked procedure, the presetting bit focus value is compensated according to varying environment, solve daytime, the presetting bit at night is provided with alternately and calls the unsharp problem of back focusing.Reduced night vision system frequent repetitive operation that focuses on when night monitoring, can adopt identical presetting bit with night in the daytime, need not the repeatedly setting operation is carried out in presetting bit round the clock.
Description of drawings
Fig. 1 is the structural drawing that adopts the supervisory system imaging moiety of active laser infrared technique;
Fig. 2 is the laser night-vision device of the present invention process flow diagram of the method for focusing automatically.
Embodiment
It is following that the present invention will be described in detail with reference to drawings and Examples.
Fig. 1 is the structural drawing that adopts the supervisory system imaging moiety of active laser infrared technique; Fig. 2 is the laser night-vision device of the present invention process flow diagram of the method for focusing automatically.
As shown in Figure 1 and Figure 2, laser night-vision device of the present invention is the method for focusing automatically, and the imaging moiety of above-mentioned watch-dog comprises: camera lens, collect the reflected light of surrounding environment, and the change that can realize electronic control is doubly and focus on; Video camera, the optical signalling that camera lens is collected is converted into vision signal; Control panel, the change of controls lens doubly and focusing operation, the method for focusing comprises automatically:
The environment for use of A, judgement imaging moiety;
B, the light source that determine to use according to environment for use, and judge the light signal kind that camera lens is collected with this;
C, read presetting bit information, imaging moiety is positioned and become doubly operation according to presetting bit information;
D, control panel compensate operation according to the focus value that collected optical source wavelength of camera lens and camera lens different become doubly camera lens;
E, a value is complementary with becoming doubly to make focus value, finishes the automatic focus of camera lens.
Night vision system is when working at night, and the active laser light source sends non-visible light, and by being delivered to video camera behind the camera lens collection reflected light, video camera is converted into vision signal and outputs to the watch-dog demonstration.Passive light source then carries out work by the non-visible light of recognition object self.
For guaranteeing the automatic operation of imaging moiety, camera lens should have auto iris, and can realize automatic focus under the operation in the daytime.
Because under the condition of working at night, camera lens must can be collected the optical signalling of surrounding environment by active light source or passive light source, so camera lens should be able to initiatively be realized automatic focus under night vision system or the passive night vision system of thermal imaging at infrared laser, Ultra-Violet Laser.
In the daytime identical with the monitoring presetting bit at night.The presetting bit that watch-dog is provided with is in the daytime called the back image at night and is still kept clear under the non-visible light illumination.The presetting bit that the illumination of watch-dog non-visible light at night is provided with down image after calling in the daytime still keeps clear.
Laser night-vision device of the present invention is the method for focusing automatically, by judging employed light source, by the different characteristics of different light rays wavelength, down focus value is compensated different the change doubly of camera lens, a focus value and a change times value are mated, realize a different light rays illumination camera lens change times operation back automatic focus down.By the judgement of environment, use light source and presetting bit information to external world, in the presetting bit invoked procedure, the presetting bit focus value is compensated according to varying environment, solve daytime, the presetting bit at night is provided with alternately and calls the unsharp problem of back focusing.Reduced night vision system frequent repetitive operation that focuses on when night monitoring, can adopt identical presetting bit with night in the daytime, need not the repeatedly setting operation is carried out in presetting bit round the clock.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention with preferred embodiment openly as above, yet, be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, be the content that does not break away from technical solution of the present invention in every case, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (4)
1. the laser night-vision device method of focusing automatically, the imaging moiety of above-mentioned watch-dog comprises: camera lens, the change that can realize electronic control are doubly and focus on; Video camera, the optical signalling that camera lens is collected is converted into vision signal; Control panel, the change of controls lens doubly and focusing operation, it is characterized in that: the method for focusing may further comprise the steps automatically:
The environment for use of A, judgement imaging moiety;
B, determine whether to use the laser lighting light source according to environment for use;
C, read camera lens and become times positional information;
D, control panel become difference doubly according to camera lens the focus value of camera lens are compensated operation;
E, a value is complementary with becoming doubly to make focus value, finishes the automatic focus of camera lens.
2. laser night-vision device according to claim 1 is the method for focusing automatically, and it is characterized in that: camera lens has auto iris, is realizing automatic focus under the operation in the daytime.
3. laser night-vision device according to claim 1 is the method for focusing automatically, it is characterized in that: under the condition of working at night, camera lens is realized automatic focus under infrared laser, Ultra-Violet Laser active night vision system or the passive night vision system of thermal imaging.
4. laser night-vision device according to claim 1 is the method for focusing automatically, it is characterized in that: identical with the monitoring presetting bit at night in the daytime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102451264A CN102109658A (en) | 2009-12-28 | 2009-12-28 | Automatic focusing method for laser night vision device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102451264A CN102109658A (en) | 2009-12-28 | 2009-12-28 | Automatic focusing method for laser night vision device |
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| CN102109658A true CN102109658A (en) | 2011-06-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393561A (en) * | 2011-11-21 | 2012-03-28 | 无锡亮源激光技术有限公司 | Portable laser night vision device |
| CN103499868A (en) * | 2013-10-10 | 2014-01-08 | 山东神戎电子股份有限公司 | Synchronous zooming correction method of laser night vision device |
| CN103973982A (en) * | 2014-05-08 | 2014-08-06 | 山东神戎电子股份有限公司 | Night vision device capable of automatically focusing laser and focusing method |
| CN105554408A (en) * | 2015-12-16 | 2016-05-04 | 天津天地伟业数码科技有限公司 | Adaptive method of movement aperture |
| CN105635536A (en) * | 2016-01-04 | 2016-06-01 | 浪潮集团有限公司 | Laser power linear adjustment method for laser night vision device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1652574A (en) * | 2004-08-23 | 2005-08-10 | 北京老村科技发展有限公司 | Dayand night remote monitor |
| US20060269266A1 (en) * | 2005-05-25 | 2006-11-30 | Canon Kabushiki Kaisha | Imaging apparatus |
| CN201114393Y (en) * | 2007-09-21 | 2008-09-10 | 姜恒 | Automatic wing expansion infrared night vision camera |
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2009
- 2009-12-28 CN CN2009102451264A patent/CN102109658A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1652574A (en) * | 2004-08-23 | 2005-08-10 | 北京老村科技发展有限公司 | Dayand night remote monitor |
| US20060269266A1 (en) * | 2005-05-25 | 2006-11-30 | Canon Kabushiki Kaisha | Imaging apparatus |
| CN201114393Y (en) * | 2007-09-21 | 2008-09-10 | 姜恒 | Automatic wing expansion infrared night vision camera |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393561A (en) * | 2011-11-21 | 2012-03-28 | 无锡亮源激光技术有限公司 | Portable laser night vision device |
| CN102393561B (en) * | 2011-11-21 | 2015-03-25 | 无锡亮源激光技术有限公司 | Portable laser night vision device |
| CN103499868A (en) * | 2013-10-10 | 2014-01-08 | 山东神戎电子股份有限公司 | Synchronous zooming correction method of laser night vision device |
| CN103499868B (en) * | 2013-10-10 | 2016-05-18 | 山东神戎电子股份有限公司 | The bearing calibration of laser night-vision device synchronous zoom |
| CN103973982A (en) * | 2014-05-08 | 2014-08-06 | 山东神戎电子股份有限公司 | Night vision device capable of automatically focusing laser and focusing method |
| CN103973982B (en) * | 2014-05-08 | 2017-11-07 | 山东神戎电子股份有限公司 | A kind of automatic focusing laser night vision equipment and focus method |
| CN105554408A (en) * | 2015-12-16 | 2016-05-04 | 天津天地伟业数码科技有限公司 | Adaptive method of movement aperture |
| CN105635536A (en) * | 2016-01-04 | 2016-06-01 | 浪潮集团有限公司 | Laser power linear adjustment method for laser night vision device |
| CN105635536B (en) * | 2016-01-04 | 2018-07-24 | 浪潮集团有限公司 | Laser power linear adjustment method for laser night vision device |
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Application publication date: 20110629 |