CN104280978A - Zoom infrared light fill-in lamp and video camera - Google Patents
Zoom infrared light fill-in lamp and video camera Download PDFInfo
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- CN104280978A CN104280978A CN201310294083.5A CN201310294083A CN104280978A CN 104280978 A CN104280978 A CN 104280978A CN 201310294083 A CN201310294083 A CN 201310294083A CN 104280978 A CN104280978 A CN 104280978A
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- infrared
- zoom
- infrared light
- lens
- focus
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- 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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
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- 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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a zoom infrared light fill-in lamp and a video camera. The zoom infrared light fill-in lamp comprises an infrared light source, an infrared zoom lens assembly and a transmission device, wherein the infrared light source is used for emitting out infrared beams, the infrared zoom lens assembly is arranged on the emitting path of the infrared beams, can move relative to the infrared light source to accordingly change the size of an illuminated area of the infrared light source, and comprises at least one infrared zoom lens, and the infrared zoom lens assembly is in transmission connection with a zoom lens assembly through the transmission device to achieve synchronous zoom movement of the infrared zoom lens assembly and the zoom lens assembly. In this way, by means of the zoom infrared light fill-in lamp, zoom infrared light fill-in can be achieved, the use efficiency of infrared light can be improved, waste of the infrared light can be reduced, cost can be further reduced, and the infrared zoom structure and the infrared zoom control mode can be simplified.
Description
Technical field
The present invention relates to protection and monitor field, particularly relate to the infrared light compensating lamp of a kind of zoom and video camera.
Background technology
The effect that safety monitoring equipment plays for protection personnel and property safety under night or dim environment is more and more valued by the people.Due to complex environment and actual demand, the demand for zoom safety monitoring equipment flexibly promotes day by day.Such as, in order to obtain image clearly under dark surrounds, require that zoom safety monitoring equipment can carry out infrared illumination or infrared light filling to guarded region.
The infrared light filling technical scheme of the zoom safety monitoring equipment of prior art mainly comprises following two kinds of modes.
The first infrared light filling technical scheme uses the infrared light of fixed beam angle.See Fig. 1, in this kind of light filling mode, the infrared beam 3 that infrared light supply 1 sends illuminates after reflector 2 reflects needs light filling region, and angle remains fixing.When watch-dog (video camera) zoom, the angle of infrared light or the size of illuminated area remain constant.Like this, there will be the bright dark inequality of the whole picture of wide-angle side: have subregion to be illuminated by infrared beam, and another part region is not irradiated by infrared beam; Or whole picture brightness is inadequate: infrared light some be irradiated to outside the guarded region after video camera zoom.Thus light filling angle well can not be mated with video camera.
The infrared light filling technical scheme of the second uses the infrared light of adjustable light beam angle.See Fig. 2, in this infrared light filling mode, the infrared beam 3 that infrared light supply 1 sends illuminates after the first infrared zoom lens 4 and the second infrared zoom lens 5 needs light filling region.In addition, drive infrared zoom lens to move by motor, thus change the angle of infrared light or the size of illuminated area along with pick-up lens zoom.This scheme can realize infrared light angle and change along with video camera zoom, but this kind of mode controls comparatively complicated, cost is higher: lens zoom and infrared zoom are driven respectively by two motors, and need a controller controls infrared zoom motor motion according to lens zoom situation, to realize synchronously carrying out of infrared zoom and lens zoom.In addition, due to the restriction in this kind of watch-dog structure and lens sizes, the infrared light having part can not be utilized (in Fig. 2, the light beam of upper left quarter is not incident to the first infrared zoom lens 4 and wastes), thus causes infrared light to waste, and usual wastage is more than 20%.
Wish a kind of better infrared light filling mode thus.
Summary of the invention
Term " light filling " in this patent refers to that, under dark surrounds (such as night-environment), watch-dog adopts the light of special infrared band to throw light on, so that watch-dog can clearly monitor the region that will monitor.
The object of the present invention is to provide the infrared light compensating lamp of a kind of zoom to realize better infrared light filling.
For achieving the above object, the invention provides the infrared light compensating lamp of a kind of zoom, the infrared light compensating lamp of described zoom comprises: infrared light supply, for sending infrared beam; Infrared focus-variable lens assembly, it is arranged on the transmission path of described infrared beam, and can move relative to described infrared light supply, and change the illuminated area size of infrared light supply, wherein, described infrared focus-variable lens assembly comprises at least one infrared focus-variable lens; And gearing, described infrared focus-variable lens assembly and zoom lens assemblies are in transmission connection by it, move for the synchronous zoom realizing described infrared focus-variable lens assembly and described zoom lens assemblies.
Thus the infrared light compensating lamp of zoom of the present invention can realize the infrared light filling of zoom; The utilization ratio of infrared light can be improved, reduce the waste of infrared light; Can also reduce costs, simplify structure and the control mode of infrared zoom.
Preferably, described gearing comprises transmission shaft and the first gear of being fixedly mounted on described transmission shaft and the second gear, wherein, lens zoom gears meshing on described first gear and described zoom lens assemblies, described second gear engages with the infrared zoom gear on described infrared focus-variable lens assembly.
Preferably, the ratio of gear of the turning axle of described lens zoom gear and the turning axle of described infrared zoom gear is in the scope of 1:2 to 2:1.
Preferably, the infrared light compensating lamp of described zoom comprises control light parts further, the transmission path that described control light parts are arranged on described infrared beam is fixed relative to described infrared light supply, infrared light for part in described infrared beam not being directly transmitted to described infrared focus-variable lens assembly collects, and makes it to be projected to described infrared focus-variable lens assembly
Preferably, described control light parts are reflectors.
Preferably, described control light parts are lens.
Preferably, described control light parts are fixed to the aluminium base of described infrared light supply by mode that is bonding or that be threaded.
Preferably, the quantity of described infrared focus-variable lens is a slice or two panels.
Preferably, described infrared focus-variable lens is concave-convex lens, plano-convex lens or biconvex lens.
Preferably, described infrared focus-variable lens is plano-convex lens, and the planar side of described plano-convex lens is facing to described infrared light supply.
Preferably, the material of described infrared focus-variable lens is PMMA or PC.
The present invention also provides a kind of video camera, and wherein, described video camera comprises the infrared light compensating lamp of zoom as above.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the infrared light compensating lamp that in prior art, rising angle is fixed
Fig. 2 is the schematic diagram of varifocal infrared light filling of the prior art etc.
Fig. 3 is the schematic diagram of video camera according to an embodiment of the invention.
Fig. 4 is the lens zoom curve of video camera shown in Fig. 3, and what wherein horizontal ordinate represented is the gear anglec of rotation, the change that what ordinate represented is along with pinion rotation watch-dog monitoring range (field angle)
Fig. 5 is the zoom curve of zoom infrared lamp in video camera shown in Fig. 3, and wherein, what horizontal ordinate represented is the gear anglec of rotation, and the distance bottom what ordinate represented is infrared Zoom lamp assembly center and LED is along with the change of the gear anglec of rotation.Along with the change of infrared Zoom lamp assembly center and LED distance from bottom, the scope that infrared lamp illuminates can change, thus consistent with the monitoring range (field angle) of video camera.
Fig. 6 is the light path schematic diagram of the first infrared Zoom lamp concrete structure when infrared lamp wide-angle of video camera shown in Fig. 3.
Fig. 7 is the light path schematic diagram of the first infrared Zoom lamp concrete structure when infrared lamp low-angle of video camera shown in Fig. 3.
Fig. 8 is the light path schematic diagram of the infrared Zoom lamp concrete structure of the second when infrared lamp wide-angle of video camera shown in Fig. 3.
Fig. 9 is the light path schematic diagram of the infrared Zoom lamp concrete structure of the second when infrared lamp low-angle of video camera shown in Fig. 3.
Figure 10 is the structural representation of the third infrared Zoom lamp concrete structure of video camera shown in Fig. 3.
Figure 11 is the structural representation of video camera shown in Fig. 3, shows transmission shaft.
Reference numeral:
| 1 | Infrared light supply | 2a | Control optical lens |
| 2 | Reflector | 8 | Infrared zoom gear |
| 3 | Infrared beam | 9 | Lens zoom gear |
| 4 | First infrared zoom lens | 10 | Aluminium base |
| 5 | Second infrared zoom lens | 11 | Transmission shaft |
| 6 | Lens zoom assembly | ? | ? |
| 7 | Infrared variable focus package | ? | ? |
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of protection of the invention and are described in detail to embodiments of the invention below in conjunction with accompanying drawing.
The infrared light compensating lamp of zoom according to the present invention comprises: infrared light supply, for sending infrared beam; Infrared focus-variable lens assembly, it is arranged on the transmission path of described infrared beam, and can move relative to described infrared light supply, and change the illuminated area size of infrared light supply, wherein, described infrared focus-variable lens assembly comprises at least one infrared focus-variable lens; And control light parts, its transmission path being arranged on described infrared beam is fixed relative to described infrared light supply, infrared light for part in described infrared beam not being directly transmitted to described infrared focus-variable lens assembly collects, and makes it to be projected to described infrared focus-variable lens assembly; And gearing, described infrared focus-variable lens assembly and zoom lens assemblies are in transmission connection by it, for realizing being synchronized with the movement of described infrared focus-variable lens assembly and described zoom lens assemblies.
Thus the infrared light compensating lamp of zoom of the present invention can realize the infrared light filling of zoom; The utilization ratio of infrared light can be improved, reduce the waste of infrared light; Can also reduce costs, simplify structure and the control mode of infrared zoom.
Fig. 3 is the schematic diagram of video camera according to an embodiment of the invention.As shown in Figure 3, described video camera comprises lens zoom assembly 6 and infrared variable focus package 7.Infrared variable focus package 7 and lens zoom assembly 6 pass through transmission shaft 11(see Figure 11) be in transmission connection, thus realize the synchronous zoom of camera lens and infrared light compensating lamp.Such as, the lens zoom curve of video camera is see Fig. 4, and what wherein horizontal ordinate represented is the gear anglec of rotation, the change that what ordinate represented is along with pinion rotation watch-dog monitoring range (field angle).The zoom curve of zoom infrared lamp is for example, see Fig. 5, and wherein, what horizontal ordinate represented is the gear anglec of rotation, and the distance bottom what ordinate represented is infrared Zoom lamp assembly center and LED is along with the change of the gear anglec of rotation.
Fig. 6 is the light path schematic diagram of the first infrared Zoom lamp concrete structure when infrared lamp wide-angle of video camera shown in Fig. 3.Fig. 7 is the light path schematic diagram of the first infrared Zoom lamp concrete structure when infrared lamp low-angle of video camera shown in Fig. 3.In the embodiment shown in Fig. 6 and Fig. 7, adopt reflector 2 as control light parts.Reflector 2 is arranged on the transmission path of the infrared beam 3 that infrared light supply 1 is launched, and fix relative to described infrared light supply, infrared light for part in described infrared beam not being directly transmitted to described infrared focus-variable lens assembly collects, and makes it to be projected to described infrared focus-variable lens assembly.When infrared zoom, the first infrared zoom lens 4 and the second infrared zoom lens 5 move simultaneously, and keep distance each other constant.But, also can keep motionless by the first infrared zoom lens 4, and only the second infrared zoom lens 5 move, change the distance between the first infrared zoom lens 4 and the second infrared zoom lens 5.Realize zoom thus.More specifically, during initial position, infrared light is maximum angle, and when watch-dog zoom, variable focus lens package moves to the direction away from light source, realizes the change of infrared light angle, thus makes the range of exposures of infrared light consistent with the monitoring range of watch-dog.
Described infrared focus-variable lens 4 and 5 can adopt aspheric design, such as, be concave-convex lens, plano-convex lens or biconvex lens.Preferably, described infrared focus-variable lens is plano-convex lens, and the planar side of described plano-convex lens is facing to described infrared light supply.The material of described infrared focus-variable lens can be PMMA or PC.
Fig. 8 is the light path schematic diagram of the infrared Zoom lamp concrete structure of the second when infrared lamp wide-angle of video camera shown in Fig. 3.Fig. 9 is the light path schematic diagram of the infrared Zoom lamp concrete structure of the second when infrared lamp low-angle of video camera shown in Fig. 3.In the embodiment shown in Fig. 8 and Fig. 9, adopt control optical lens 2a as control light parts.Control optical lens 2a is arranged on the transmission path of the infrared beam 3 that infrared light supply 1 is launched, and fix relative to described infrared light supply, infrared light for part in described infrared beam not being directly transmitted to described infrared focus-variable lens assembly collects, and makes it to be projected to described infrared focus-variable lens assembly.When infrared zoom, the first infrared zoom lens 4 and the second infrared zoom lens 5 move simultaneously, and keep distance each other constant.But, also can keep motionless by the first infrared zoom lens 4, and only the second infrared zoom lens 5 move, change the distance between the first infrared zoom lens 4 and the second infrared zoom lens 5.Realize zoom thus.
Figure 10 is the structural representation of the third infrared Zoom lamp concrete structure of video camera shown in Fig. 3.In the embodiment shown in fig. 10, only use only first infrared zoom lens 4, and do not adopt the second infrared zoom lens 5.As shown in Figure 10, reflector 2 mode that is bonding or that be threaded is fixed to the aluminium base 10 of described infrared light supply.
Figure 11 is the structural representation of video camera shown in Fig. 3, clearly show transmission shaft 11.Transmission shaft 11 is provided with the first gear and second gear of synchronous rotary with it.Described first gear engages with the lens zoom gear 9 on described zoom lens assemblies, and described second gear engages with the infrared zoom gear 8 on described infrared focus-variable lens assembly.The ratio of gear of the turning axle of described lens zoom gear and the turning axle of described infrared zoom gear can be arranged as required, such as, in the scope of 1:2 to 2:1, such as, can be chosen as 1:1.The zoom mode that zoom lens is rectilinear motion by convert rotational motion is known, and the present invention repeats no more.The zoom mode of zoom infrared lamp is also be rectilinear motion by convert rotational motion.In order to realize the good fit of zoom lens and zoom infrared lamp, zoom lens and zoom infrared lamp can be made to overlap with the illuminated area of zoom infrared lamp in the visual field of initial position (non-zoom) zoom lens, and/or make to overlap with the illuminated area of zoom infrared lamp in the visual field of maximum zoom position place zoom lens.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the infrared light compensating lamp of zoom, is characterized in that, comprising:
Infrared light supply, for sending infrared beam;
Infrared focus-variable lens assembly, it is arranged on the transmission path of described infrared beam, and can move relative to described infrared light supply, and change the illuminated area size of infrared light supply, wherein, described infrared focus-variable lens assembly comprises at least one infrared focus-variable lens; And
Gearing, described infrared focus-variable lens assembly and zoom lens assemblies are in transmission connection by it, move for the synchronous zoom realizing described infrared focus-variable lens assembly and described zoom lens assemblies.
2. the infrared light compensating lamp of zoom as claimed in claim 1, it is characterized in that, described gearing comprises transmission shaft and the first gear of being fixedly mounted on described transmission shaft and the second gear, wherein, lens zoom gears meshing on described first gear and described zoom lens assemblies, described second gear engages with the infrared zoom gear on described infrared focus-variable lens assembly.
3. the infrared light compensating lamp of zoom as claimed in claim 2, it is characterized in that, the ratio of gear of the turning axle of described lens zoom gear and the turning axle of described infrared zoom gear is in the scope of 1:2 to 2:1.
4. the infrared light compensating lamp of zoom as claimed in claim 1, it is characterized in that, comprise control light parts further, the transmission path that described control light parts are arranged on described infrared beam is fixed relative to described infrared light supply, infrared light for part in described infrared beam not being directly transmitted to described infrared focus-variable lens assembly collects, and makes it to be projected to described infrared focus-variable lens assembly.
5. the infrared light compensating lamp of zoom as claimed in claim 4, it is characterized in that, described control light parts are reflectors.
6. the infrared light compensating lamp of zoom as claimed in claim 4, it is characterized in that, described control light parts are lens.
7. the infrared light compensating lamp of zoom as claimed in claim 4, it is characterized in that, described control light parts are fixed to the aluminium base of described infrared light supply by mode that is bonding or that be threaded.
8. the infrared light compensating lamp of zoom as claimed in claim 1, it is characterized in that, described infrared focus-variable lens is plano-convex lens, and the planar side of described plano-convex lens is facing to described infrared light supply.
9. the infrared light compensating lamp of zoom as claimed in claim 1, it is characterized in that, the material of described infrared focus-variable lens is PMMA or PC.
10. a video camera, is characterized in that, described video camera comprises the infrared light compensating lamp of zoom as claimed in any one of claims 1-9 wherein.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310294083.5A CN104280978A (en) | 2013-07-11 | 2013-07-11 | Zoom infrared light fill-in lamp and video camera |
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| CN201310294083.5A CN104280978A (en) | 2013-07-11 | 2013-07-11 | Zoom infrared light fill-in lamp and video camera |
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| CN104280978A true CN104280978A (en) | 2015-01-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106470311A (en) * | 2015-08-21 | 2017-03-01 | 高准精密工业股份有限公司 | Shooting and illuminator |
| CN106899786A (en) * | 2015-12-21 | 2017-06-27 | 威海市公安局文登分局 | Monitor camera device and its application method |
| CN108540723A (en) * | 2018-04-27 | 2018-09-14 | 中国科学院半导体研究所 | More camera lenses for Active Imaging calculate synchronisation control means |
| WO2019141005A1 (en) * | 2018-01-18 | 2019-07-25 | 杭州海康威视数字技术股份有限公司 | Light supplement lamp and camera equipment |
| WO2019183808A1 (en) * | 2018-03-27 | 2019-10-03 | 深圳市大疆创新科技有限公司 | Control method, control device, imaging system, aircraft and storage medium |
| CN110493569A (en) * | 2019-08-12 | 2019-11-22 | 苏州佳世达光电有限公司 | Monitoring objective shoots method for tracing and system |
| CN112087594A (en) * | 2019-06-14 | 2020-12-15 | 上海巍宇航天科技有限公司 | Monitoring camera system with automatic light supplementing lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106470311A (en) * | 2015-08-21 | 2017-03-01 | 高准精密工业股份有限公司 | Shooting and illuminator |
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| CN112087594A (en) * | 2019-06-14 | 2020-12-15 | 上海巍宇航天科技有限公司 | Monitoring camera system with automatic light supplementing lamp |
| CN110493569A (en) * | 2019-08-12 | 2019-11-22 | 苏州佳世达光电有限公司 | Monitoring objective shoots method for tracing and system |
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