CN102879983B - Optical-filter switcher and video camera - Google Patents
Optical-filter switcher and video camera Download PDFInfo
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- CN102879983B CN102879983B CN201210294632.4A CN201210294632A CN102879983B CN 102879983 B CN102879983 B CN 102879983B CN 201210294632 A CN201210294632 A CN 201210294632A CN 102879983 B CN102879983 B CN 102879983B
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- electromagnet
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Abstract
The invention discloses a kind of optical-filter switcher and video camera, this optical-filter switcher comprise be provided with atrium base, be fixed on the cover plate of base and the framework of optical filter be housed, described atrium forms the cavity of accommodating described framework after being covered by cover plate, described framework can laterally slide in the cavity, the base of described cavity side or cover plate are provided with the first variable electromagnet of magnetic pole, described framework is provided with the first permanent magnet near one end of the first electromagnet, and the south poles of described first electromagnet and the first permanent magnet is all along base laterally arrangement.Utilize the magnet two like magnetic poles repel each other principle that there is a natural attraction between the sexes, by the change of electromagnet pole, attract or repel framework, framework is laterally slided in cavity, thus with lower cost, simple structure, achieve the smooth and easy switching of optical filter.<!--1-->
Description
Technical field
The present invention relates to camcorder technology field, especially relate to a kind of optical-filter switcher and video camera.
Background technology
In security device product, the utilization of thermal camera is wider, wherein the optical filter of thermal camera comprises the first optical filter and the second optical filter, need in work often to switch with the shooting effect taking into account daytime and evening, if optical-filter switcher has some setbacks even stuck and crashes in handoff procedure, image black at night captured by thermal camera will be caused dim, and daytime is a little partially red, has a strong impact on image quality.
Optical-filter switcher in the market, normally motor adds gear & rack structure or cam structure, complicated structure, and total volume ratio is comparatively large, and therefore production efficiency is low, cost is higher.And the switching mode of this structure is that pendulum model is rocked, is affected by gravity large, during switching, easily causes deadlock phenomenon.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of optical-filter switcher and video camera, is intended to the smooth and easy switching realizing optical filter with lower cost, simple structure.
To achieve these objectives, the present invention proposes a kind of optical-filter switcher, this optical-filter switcher comprise be provided with atrium base, be fixed on the cover plate of base and the framework of optical filter be housed, described atrium forms the cavity of accommodating described framework after being covered by cover plate, described framework can laterally slide in the cavity, the base of described cavity side or cover plate are provided with the first variable electromagnet of magnetic pole, described framework is provided with the first permanent magnet near one end of the first electromagnet, and the south poles of described first electromagnet and the first permanent magnet is all along base laterally arrangement.
Preferably, the base of described cavity opposite side or cover plate are provided with the second variable electromagnet of magnetic pole, described framework is provided with the second permanent magnet near one end of the second electromagnet, the south poles of described second electromagnet and the second permanent magnet is all along base laterally arrangement, and the magnetic force of described first electromagnet and the first permanent magnet is contrary with the magnetic force of the second electromagnet and the second permanent magnet.
Preferably, the base of described atrium both sides is provided with the groove of accommodating described first electromagnet and the second electromagnet, and the two ends of described framework are provided with the open slot of accommodating described first permanent magnet and the second permanent magnet.
Preferably, described first electromagnet and the second electromagnet comprise the variable power supply of iron core, the coil being wound in iron core along single direction and electric polarity, and described first electromagnet and the second magnet spool are connected to same described power supply.
Preferably, described framework is provided with the some projections supporting this framework, and described projection contacts with cavity inner wall.
Preferably, described projection is be located at the spheroid of described frame edge.
Preferably, described cover plate is pcb board.
Preferably, described base is or/and optical filter is made up of PC material.
Preferably, described base is arranged the female metal cartridge of tool.
The present invention proposes a kind of video camera simultaneously, this video camera comprises an optical-filter switcher, described optical-filter switcher comprises the base being provided with atrium, be fixed on the cover plate of base and the framework of optical filter is housed, described atrium forms the cavity of accommodating described framework after being covered by cover plate, described framework can laterally slide in the cavity, the base of described cavity side or cover plate are provided with the first variable electromagnet of magnetic pole, described framework is provided with the first permanent magnet near one end of the first electromagnet, the south poles of described first electromagnet and the first permanent magnet is all along base laterally arrangement.
A kind of optical-filter switcher provided by the present invention and video camera, utilize the magnet two like magnetic poles repel each other principle that there is a natural attraction between the sexes, the electromagnet that magnetic pole is variable is set on base or cover plate, in the framework that optical filter is housed corresponding one end, permanent magnet is set, by the change of electromagnet pole, attract or repel framework, framework is laterally slided in cavity, thus with lower cost, simple structure, achieve the smooth and easy switching of optical filter.
Accompanying drawing explanation
Fig. 1 is the fractionation structural representation of optical-filter switcher preferred embodiment of the present invention;
Fig. 2 is the structural representation of base in Fig. 1;
Fig. 3 is the structural representation of Fig. 1 middle frame;
Fig. 4 is the fundamental diagram of optical-filter switcher of the present invention;
Fig. 5 is another fundamental diagram of optical-filter switcher of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See an optical-filter switcher of the present invention preferred embodiment shown in Fig. 1-Fig. 3.The optical-filter switcher of the present embodiment, comprise base 100, cover plate 300 and the framework 200 of optical filter is housed, described base 100 is provided with atrium 110, is provided with a light hole 111 in the middle part of atrium 110, and the base 100 on the left of atrium 110 is provided with the groove 120 that size is about 1x1.5x9; Described optical filter comprises the first optical filter 210 being fixed on the left side on the left of framework 200 and the second optical filter 220 be fixed on the right side of framework 200; Described framework 200 is positioned in atrium 110, the modes such as described cover plate 300 is connected by screw are fixed on base 100, atrium 110 is covered rear formation one cavity by cover plate 300, framework 200 is placed in this cavity and also can laterally also namely horizontally slips, when framework 200 slides into the left side, then the second optical filter 220 aims at light hole 111, and when framework 200 slides into the right, then the first optical filter 210 aims at light hole 111.Described groove 120 is built with variable the first electromagnet 121 of magnetic pole, described first electromagnet 121 comprises iron core, the coil be wound around around iron core along single direction and is connected to the variable power supply of the polarity of coil, this first electromagnet 121 is fixed on base 100, can certainly be fixed on cover plate 300, described framework 200 is also that framework 200 left end is provided with open slot 240 near one end of the first electromagnet 121, first permanent magnet 241 is wherein housed, and the south poles of the first electromagnet 121 and the first permanent magnet 241 is along base 100 laterally arrangement.
Simultaneously see Fig. 4, Fig. 5, in the present embodiment, first permanent magnet 241 left side is arctic N, the right is South Pole S, then when being arctic N on the right of the first electromagnet 121, according to the magnet two like magnetic poles repel each other principle that there is a natural attraction between the sexes, magnetic force between first electromagnet 121 and the first permanent magnet 241 is repulsive force, and framework 200 is pushed to the right, and now first optical filter 210 in left side aims at light hole 111; When the right of the first electromagnet 121 is transformed to South Pole S, the magnetic force between the first electromagnet 121 and the first permanent magnet 241 is attractive force, and framework 200 is by suction toward the left side, and now second optical filter 220 on right side aims at light hole 111.Therefore, the present embodiment, with lower cost, simple structure, achieves the smooth and easy switching of optical filter, and owing to being laterally to slide but not pendulum model is rocked, reduces the impact of gravity on switch.
Further, the base 100 on described atrium 110 opposite side also i.e. right side is also provided with the groove 120 that size is about 1x1.5x9, this groove 120 is built with variable the second electromagnet 122 of magnetic pole, and described second electromagnet 122 is fixed on base 100, can certainly be fixed on cover plate 300; Described framework 200 is also that framework 200 right-hand member is also provided with open slot 240 near one end of the second electromagnet 122, second permanent magnet 242 is wherein housed, the south poles of described second electromagnet 122 and the second permanent magnet 242 is along base 100 laterally arrangement, and the magnetic force of described first electromagnet 121 and the first permanent magnet 241 is always contrary with the magnetic force of the second electromagnet 122 and the second permanent magnet 242.When magnetic force between the first electromagnet 121 and the first permanent magnet 241 is repulsive force, magnetic force between second electromagnet 122 and the second permanent magnet 242 is then attractive force, framework 200 1 aspect is subject to the repulsive force that the first electromagnet 121 is turned right, be subject to the attractive force that the second electromagnet 122 is turned right on the other hand, slide into the right easily at double reaction plus underframe 200, make first optical filter 210 in left side aim at light hole 111; Otherwise, when magnetic force between the first electromagnet 121 and the first permanent magnet 241 is attractive force, magnetic force between second electromagnet 122 and the second permanent magnet 242 is repulsive force, framework 200 1 aspect is subject to the attractive force that the first electromagnet 121 is turned left, be subject to the repulsive force that the second electromagnet 242 is turned left on the other hand, slide into the left side easily at double reaction plus underframe 200, make second optical filter 220 on right side aim at light hole 111.
Further, the coil of described first electromagnet 241 and the second electromagnet 242 is connected to the variable power supply of same electric polarity, two coil windings can be identical or contrary in the direction of iron core, ensures that the magnetic force of the first electromagnet 241 and the first permanent magnet 121 is contrary with the magnetic force of the second electromagnet 242 and the second permanent magnet 122 by the pole orientation of the permanent magnet adjusting framework 200 two ends.Two electromagnet share a power supply, more convenient when magnetic pole switches, and can reduce costs.Meanwhile, after two electromagnet are set, suitably can reduce the magnetic force of single electromagnet, thus can reduce supply voltage, reduce further cost.
Groove 120 on above-mentioned base also can change through hole into, and the first electromagnet 121 and the second electromagnet 122 are fixed on cover plate 300 both sides, and after cover plate 300 is fixed on base 100, two electromagnet are through corresponding through hole; Or the first electromagnet and the second electromagnet are fixed on base both sides, empty avoiding breach is set in cover plate relevant position; Framework about 200 two ends also can not arrange open slot 240, only the first permanent magnet 241 and the second permanent magnet 242 are directly fixed on end.
Further, described framework 200 is provided with the some projections 230 supporting this framework 200, described projection 230 contacts with cavity inner wall, framework 200 is suspended in cavity and does not contact with cavity wall, the surface of contact of framework 200 and cavity wall is reduced with this, and then reduce the friction force of framework 200 and cavity wall, more smooth and easy when framework 200 is horizontally slipped in the cavities.
Further, the projection 230 of the present embodiment is for being located at 6 or 4 spheroids at described framework 200 edge, be distributed in the edge of framework about 200 both sides, it is point cantact between spheroid and cavity inner wall, friction force is very little, have ignored the impact of gravity further, when framework 200 is slided, almost there is no frictional resistance, when optical filter switches, phenomenons such as crashing, stuck will not be occurred.
Further, described base 100 is arranged the female metal cartridge 130 of tool, described metal cartridge 130 can be iron prop, copper post or stainless steel column etc., and it with base 100 integrated injection molding or can be connected to base 100.The present embodiment and base 100 lower edges have been symmetrical arranged 6 copper posts, are coupled together by the lens mount of base 100 with video camera by screwing in bolt or screw in copper post.The intensity of plastic parts is more weak, and its internal thread can damage after bolt or screw repeatedly screw in back-out, and the intensity of copper post is higher, can avoid the damage of internal thread.
Further, the cover plate 300 of the present embodiment is printed circuit board (PCB) (PrintedCircuitBoard, PCB), instead of traditional stainless steel cover plate, both saves material cost, again can weight reduction.The first optical filter 210 in base 100 and optical filter and the second optical filter 220 are by polycarbonate (Polycarbonate, PC) make, because PC is comparatively hard and light, and less than 100 DEG C are not easy distortion, thus effectively can alleviate base 100 and optical filter weight and can prevent high temperature deformation.
The present embodiment proposes a kind of video camera simultaneously, this video camera comprises an optical-filter switcher, described optical-filter switcher comprises the base being provided with atrium, be fixed on the cover plate of base and the framework of optical filter is housed, described atrium forms the cavity of accommodating described framework after being covered by cover plate, described framework can laterally slide in the cavity, the base of described cavity side or cover plate are provided with the first variable electromagnet of magnetic pole, described framework is provided with the first permanent magnet near one end of the first electromagnet, the south poles of described first electromagnet and the first permanent magnet is all along base laterally arrangement.Optical-filter switcher described in the present embodiment is the optical-filter switcher in the present invention involved by above-described embodiment, does not repeat them here.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. the optical-filter switcher of a video camera, comprise be provided with atrium base, be fixed on the cover plate of base and the framework of optical filter be housed, described atrium forms the cavity of accommodating described framework after being covered by cover plate, described framework can laterally slide in the cavity, it is characterized in that, the base of described cavity side or cover plate are provided with the first variable electromagnet of magnetic pole, described framework is provided with the first permanent magnet near one end of the first electromagnet, and the south poles of described first electromagnet and the first permanent magnet is all along base laterally arrangement;
The base of described cavity opposite side or cover plate are provided with the second variable electromagnet of magnetic pole, described framework is provided with the second permanent magnet near one end of the second electromagnet, the south poles of described second electromagnet and the second permanent magnet is all along base laterally arrangement, and the magnetic force of described first electromagnet and the first permanent magnet is contrary with the magnetic force of the second electromagnet and the second permanent magnet;
Described first electromagnet and the second electromagnet comprise the variable power supply of iron core, the coil being wound in iron core along single direction and electric polarity, and described first electromagnet and the second magnet spool are connected to same described power supply;
The common one end sub-connection with described power supply of the spiral starting point of described first magnet spool and the spiral terminal of described second magnet spool; The spiral terminal of described first magnet spool is connected with the another terminal of described power supply jointly with the spiral starting point of described second magnet spool, wherein, the spiral terminal of described first magnet spool is relative with the spiral starting point of described second magnet spool, the spiral starting point of described first magnet spool and the spiral terminal of described second magnet spool back to.
2. optical-filter switcher according to claim 1, it is characterized in that, the base of described atrium both sides is provided with the groove of accommodating described first electromagnet and the second electromagnet, and the two ends of described framework are provided with the open slot of accommodating described first permanent magnet and the second permanent magnet.
3. optical-filter switcher according to claim 1 and 2, is characterized in that, described framework is provided with the some projections supporting this framework, and described projection contacts with cavity inner wall.
4. optical-filter switcher according to claim 3, is characterized in that, described projection is be located at the spheroid of described frame edge.
5. optical-filter switcher according to claim 4, is characterized in that, described cover plate is pcb board.
6. optical-filter switcher according to claim 5, is characterized in that, described base is or/and optical filter is made up of PC material.
7. optical-filter switcher according to claim 6, is characterized in that, described base is arranged the female metal cartridge of tool.
8. a video camera, comprises an optical-filter switcher, it is characterized in that, described optical-filter switcher is the optical-filter switcher as described in any one of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210294632.4A CN102879983B (en) | 2012-08-17 | 2012-08-17 | Optical-filter switcher and video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210294632.4A CN102879983B (en) | 2012-08-17 | 2012-08-17 | Optical-filter switcher and video camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879983A CN102879983A (en) | 2013-01-16 |
| CN102879983B true CN102879983B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210294632.4A Expired - Fee Related CN102879983B (en) | 2012-08-17 | 2012-08-17 | Optical-filter switcher and video camera |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404078A (en) * | 2014-09-01 | 2016-03-16 | 鸿富锦精密工业（深圳）有限公司 | Camera module group |
| CN104698569A (en) * | 2015-04-03 | 2015-06-10 | 浙江水晶光电科技股份有限公司 | Lens module switching device and lens module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200944174Y (en) * | 2006-06-20 | 2007-09-05 | 何军 | Automatic switching device for vidicon filter element |
| CN201210215Y (en) * | 2008-05-23 | 2009-03-18 | 惠州市百宏微动技术工业有限公司 | Optical filter switching apparatus used for photographic lens |
| CN201449507U (en) * | 2009-05-27 | 2010-05-05 | 彭中 | Optical filter switching device |
| CN202003120U (en) * | 2011-03-18 | 2011-10-05 | 深圳波粒科技股份有限公司 | Optical filter switching device of camera and camera |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070154208A1 (en) * | 2005-12-30 | 2007-07-05 | Ming-Tsun Chen | Light-filtering module for an image-capturing device |
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2012
- 2012-08-17 CN CN201210294632.4A patent/CN102879983B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200944174Y (en) * | 2006-06-20 | 2007-09-05 | 何军 | Automatic switching device for vidicon filter element |
| CN201210215Y (en) * | 2008-05-23 | 2009-03-18 | 惠州市百宏微动技术工业有限公司 | Optical filter switching apparatus used for photographic lens |
| CN201449507U (en) * | 2009-05-27 | 2010-05-05 | 彭中 | Optical filter switching device |
| CN202003120U (en) * | 2011-03-18 | 2011-10-05 | 深圳波粒科技股份有限公司 | Optical filter switching device of camera and camera |
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| CN102879983A (en) | 2013-01-16 |
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Granted publication date: 20160120 Termination date: 20190817 |