CN204028449U - A kind of varifocal mirror group, lighting device and active zoom video camera - Google Patents
A kind of varifocal mirror group, lighting device and active zoom video camera Download PDFInfo
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- CN204028449U CN204028449U CN201420192555.6U CN201420192555U CN204028449U CN 204028449 U CN204028449 U CN 204028449U CN 201420192555 U CN201420192555 U CN 201420192555U CN 204028449 U CN204028449 U CN 204028449U
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Abstract
The utility model is applicable to security protection camera technique field, a kind of varifocal mirror group, lighting device and active zoom video camera are provided, for active visible camera, comprise first lens group, the 3rd lens combination of coaxial setting and can between described first lens group and the 3rd lens combination, move to change the second lens combination of the light projector angle of described varifocal mirror group, the light projector angle of described varifocal mirror group be 5～100 ° adjustable.The utility model is combined to form varifocal mirror group by first lens group, the second lens combination and the 3rd lens combination, the second lens combination can be along optical axis translation, can continuously change the light projector angle of varifocal mirror group on a large scale, make it to match with camera angle, video camera can clearly be made a video recording under different distance and scope, and then solved the application limitation problem of video camera, expanded the range of application of video camera.
Description
Technical field
The utility model belongs to security protection camera technique field, particularly a kind of varifocal mirror group, lighting device and active zoom video camera.
Background technology
Video camera is the widely used surveillance equipment of safety-security area, mainly comprises two kinds of active video camera and passive type video cameras.Passive type video camera is that the infrared radiation sending by target self produces heat picture, and very high to induction technology requirement, technical difficulty is larger, applies less.Active video camera is to irradiate target by lighting device, and the light being reflected by imaging device receiving target produces image, imaging clearly, and technical easy realization, that compared with passive type video camera, applies is more extensive.Current active video camera, the light projector angle of lighting device immobilizes, can not be with the change of camera distance and scope real-time change, make video camera cannot adjust in real time monitoring distance and scope, the special occasions that needs in good time to change monitoring range at some, its application has been subject to larger limitation.
Utility model content
The purpose of this utility model is to provide a kind of varifocal mirror group, makes the light projector angle of lighting device of active video camera adjustable, and then makes monitoring distance and the scope of video camera adjustable, expands its range of application.
The utility model is to realize like this, a kind of varifocal mirror group, for active visible camera, comprise first lens group, the 3rd lens combination of coaxial setting and can between described first lens group and the 3rd lens combination, move to change the second lens combination of the light projector angle of described varifocal mirror group, the light projector angle of described varifocal mirror group be 5～100 ° adjustable.
As the preferred technical scheme of the utility model:
Described first lens group, the second lens combination and the 3rd lens combination set gradually along optical transmission direction, and diameter increases successively.
Described first lens group and the second lens combination are convergent lens group, and described the 3rd lens combination is divergent lens group.
Described first lens group and the second lens combination are divergent lens group, and described the 3rd lens combination is convergent lens group.
Another object of the present utility model is to provide a kind of lighting device, comprise visible light source and above-mentioned varifocal mirror group, described visible light source is positioned at the light inlet side of the first lens group of described varifocal mirror group, and the optical axis coincidence of the central shaft of the emergent light of described visible light source and described varifocal mirror group.
As the preferred technical scheme of the utility model:
Described visible light source is LED light source, and described first lens group and the second lens combination are convergent lens group, and described the 3rd lens combination is divergent lens group.
Described visible light source is LASER Light Source, and described first lens group and the second lens combination are divergent lens, and described the 3rd lens combination is convergent lens group.
Coaxial first catoptron that is provided with on the emitting light path of described varifocal mirror group, is provided with the second catoptron of annular in the reflected light path of described the first catoptron, described the first catoptron is convex mirror, and described the second catoptron is concave mirror.
Described the first catoptron can move along the optical axis of described varifocal mirror group.
Another object of the present utility model is to provide a kind of active zoom video camera, comprises camera head, also comprises above-mentioned lighting device, and described camera head is positioned at the bright dipping side of described lighting device.
The utility model is combined to form varifocal mirror group by first lens group, the second lens combination and the 3rd lens combination, the second lens combination can be along optical axis translation, can continuously change the light projector angle of varifocal mirror group on a large scale, make it to match with camera angle, video camera can clearly be made a video recording under different distance and scope, and then solved the application limitation problem of video camera, expanded the range of application of video camera; Further, adopt single LEDs light source or LASER Light Source, than traditional array light source, its volume is little, simple in structure, be convenient to install, good heat dissipation effect; Further, catoptron is set in lighting device, can further expands light projector angle, and then expand the monitoring range of video camera.
Accompanying drawing explanation
Fig. 1 is structure and the index path () of the varifocal mirror group that provides of the utility model embodiment;
Fig. 2 is structure and the index path (two) of the varifocal mirror group that provides of the utility model embodiment;
Fig. 3 is structure and the index path (three) of the varifocal mirror group that provides of the utility model embodiment;
Fig. 4 is the structural representation of the lighting device that provides of the utility model embodiment;
Fig. 5 is the illuminating effect figure of the lighting device that provides of the utility model embodiment;
Wherein, the figure of Fig. 5 (a2) for light projector angle be the light intensity curve of 60 °;
Figure (b2) for light projector angle be the light intensity curve of 45 °;
Figure (c2) for light projector angle be the light intensity curve of 30 °;
Figure (d2) for light projector angle be the light intensity curve of 20 °;
Figure (e2) for light projector angle be the light intensity curve of 10 °;
Fig. 6 is the structural representation () of the active zoom video camera that provides of the utility model embodiment;
Fig. 7 is the structural representation (two) of the active zoom video camera that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:
Refer to Fig. 1 and Fig. 2, the varifocal mirror group that the utility model embodiment provides is mainly used in active video camera, a part as lighting device, be used for adjusting light path, make the light projector angle of lighting device adjustable in real time, and then light projector angle is matched with the camera angle of camera head, carry out monitoring camera-shooting on a large scale.Concrete, varifocal mirror group 1 comprises first lens group 11, the second lens combination 12 and the 3rd lens combination 13 along optical transmission direction successively coaxial setting, visible light source 2 can be arranged on the light inlet side of first lens group 11.Wherein, the second lens combination 12 can move freely along optical axis between first lens group 11 and the 3rd lens combination 13.Due to the movement of the second lens combination 12, the focal length of whole mirror group is changed thereupon, and then the light projector angle of varifocal mirror group 1 is changed, the light projector angle of this varifocal mirror group 1 can regulate continuously between 5～100 °, and between 10～60 °, illuminating effect is better.
As Fig. 1, when the second lens combination 12 is during near first lens group 11, the focal length of varifocal mirror group 1 is elongated, and less from the light projector angle of the light beam of the 3rd lens combination 13 outgoing, light beam tightens up, applicable camera angle situation less, that long distance is taken among a small circle; As Fig. 2, in the time of near the second lens combination 12 moves to the 3rd lens combination 13, the focal length of varifocal mirror group 1 shortens, and light projector angle increases, beam divergence, the situation that applicable camera angle is large, short distance is taken on a large scale.Consult the illuminating effect figure shown in Fig. 5, light projector angle is respectively 60 °, 45 °, 30 °, 20 °, 10 ° simultaneously, by diagram, can be found out, light spot shape rule, brightness is even, there is no obvious bright spot or blackening, good illumination effect, and then guarantee good photographic effect.
The utility model embodiment is by mobile the second lens combination 12, can continuously change the light projector angle of varifocal mirror group 1 on a large scale, make it to match with the camera angle changing, video camera can clearly be made a video recording under different distance and scope, and then solved the application limitation problem of video camera, expanded the range of application of video camera.
In the present embodiment, first lens group 11 can be independent a slice lens, also can be comprised of multi-disc lens, and the second lens combination 12 and the 3rd lens combination 13 are in like manner.
In the present embodiment, the diameter of first lens group 11, the second lens combination 12 and the 3rd lens combination 13 can but be not limited to successively and increase, and for dissimilar light source, the type of each lens can appropriate change.As a kind of embodiment, visible light source 2 can adopt conventional LED light source, its lighting angle is larger, and first lens group 11 and the second lens combination 12 adopt convergent lens group to tighten up light beam, and the 3rd lens combination 13 adopts divergent lens group further to adjust light path.As another kind of embodiment, visible light source 2 adopts LASER Light Source, and light emitting anger is minimum, and now first lens group 11 and the second lens combination 12 can adopt divergent lens group with expanded light beam, and the 3rd lens combination 13 adopts convergent lens group further to adjust light path.Be more than feasible implementation, but be not unique implementation.
Further, concrete composition structure and the shape of convergent lens group and divergent lens group can have multiple, for example, convergent lens group comprises at least one convergent lens, can be independent a slice convergent lens, the mirror group with convergent beam function that also can be formed by some convergent lenses and divergent lens, same, divergent lens group comprises at least a slice divergent lens, the mirror group with divergent beams function that also can be comprised of some convergent lenses and divergent lens; Wherein, convergent lens can adopt concave-convex type, planoconvex or biconvex, and divergent lens can adopt concave-convex type, platycelous or double concave type.And when first lens group 11 and the second lens combination 12 are convergent lens group, also can adopt respectively different structures, and same, when first lens group 11 and the second lens combination 12 are divergent lens group, also can adopt different structures.
In the present embodiment, the diameter of each lens does not need strict restriction, can determine according to the size of varifocal mirror assembly housing.Distance between lens is relevant to the diameter of lens, can suitably design lenticular spacing according to lens diameter.The movable distance of the second lens combination 12 is determined according to the distance between first lens group 11 and the 3rd lens combination 13 and light projector angle.The surface of each lens is aspheric surface, can determine according to computer simulation pointwise, and this is the conventional technological means of those skilled in the art, repeats no more herein.
Further, the utility model also provides a kind of lighting device that comprises above-mentioned varifocal mirror group 1, for active video camera, as Fig. 1 to Fig. 3, this lighting device comprises visible light source 2 and above-mentioned varifocal mirror group 1, and visible light source 2 is white light espespecially, but does not get rid of monochromatic light, visible light source 2 is positioned at the light inlet side of the first lens group 11 of varifocal mirror group 1, and the optical axis coincidence of the central shaft of the emergent light of visible light source 2 and varifocal mirror group 1.This visible light source 2 can adopt conventional light source as LED light source etc., also can adopt LASER Light Source, and for dissimilar light source, the type of first lens group 11, the second lens combination 12 and the 3rd lens combination 13 as mentioned above.The light that visible light source 2 sends is launched with suitable light projector angle after by the adjustment of varifocal mirror group 1, for the illumination of making a video recording.By image pickup scope and distance, adjust in real time the light projector angle of camera angle and varifocal mirror group, realize the shooting of zones of different.
In the present embodiment, visible light source 2 preferably adopts single large power white light LED light source, compares with traditional dot matrix LED light source, and it has advantages of, and volume is little, be convenient to installation, good heat dissipation effect.
Further consult Fig. 4, this lighting device can also arrange catoptron group 3 on the emitting light path of varifocal mirror group 1, this catoptron group comprises the first catoptron 31 and the second catoptron 32, the first catoptron 31 is arranged on the emitting light path of varifocal mirror group 1 and is coaxial with it, the second catoptron 32 is arranged on the reflected light path of the first catoptron 31, for fear of the second catoptron 32, block the emergent light of varifocal mirror group 1, the second catoptron 32 is designed to annular, the region that light beam can be enclosed through this annular.In addition, the first catoptron 31 is convex mirror, and the second catoptron 32 is concave mirror, makes light beam reflex to the second catoptron 32 by the first catoptron 31, by the second catoptron 32, suitably receives light.By catoptron group 3, can expand the diameter of light projector light beam, reduce the shading of camera head, make the projection light can be more for illumination.
And, the first catoptron 31 can be designed to movable-type catoptron, by the distance between adjustment and visible light source 2, further change the light projector angle of lighting device, the first catoptron 31 and varifocal mirror group 1 are regulated simultaneously, can further expand the variable range at light projector angle, and then expand the monitoring range of video camera.
Above-mentioned lighting device is mainly used in active video camera, so the utility model is also protected the active zoom video camera that comprises above-mentioned lighting device.As Fig. 6 and Fig. 7, this video camera mainly comprises camera head 4 and lighting device, and wherein, camera head 4 is positioned at the bright dipping side of lighting device.Certainly, this video camera 4 also comprises other functional structures, and as shell, circuit, data processing equipment etc., this is technology well known in the art, and the utility model is not described in detail.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a varifocal mirror group, for active visible camera, it is characterized in that, comprise first lens group, the 3rd lens combination of coaxial setting and can between described first lens group and the 3rd lens combination, move to change the second lens combination of the light projector angle of described varifocal mirror group, the light projector angle of described varifocal mirror group be 5～100 ° adjustable.
2. varifocal mirror group as claimed in claim 1, is characterized in that, described first lens group, the second lens combination and the 3rd lens combination set gradually along optical transmission direction, and diameter increases successively.
3. varifocal mirror group as claimed in claim 1 or 2, is characterized in that, described first lens group and the second lens combination are convergent lens group, and described the 3rd lens combination is divergent lens group.
4. varifocal mirror group as claimed in claim 1 or 2, is characterized in that, described first lens group and the second lens combination are divergent lens group, and described the 3rd lens are convergent lens group.
5. a lighting device, it is characterized in that, comprise the varifocal mirror group described in visible light source and claim 1 to 5 any one, described visible light source is positioned at the light inlet side of the first lens group of described varifocal mirror group, and the optical axis coincidence of the central shaft of the emergent light of described visible light source and described varifocal mirror group.
6. lighting device as claimed in claim 5, is characterized in that, described visible light source is single LEDs light source, and described first lens group and the second lens combination are convergent lens group, and described the 3rd lens combination is divergent lens group.
7. lighting device as claimed in claim 5, is characterized in that, described visible light source is LASER Light Source, and described first lens group and the second lens combination are divergent lens group, and described the 3rd lens combination is convergent lens group.
8. the lighting device as described in claim 5,6 or 7, it is characterized in that, coaxial first catoptron that is provided with on the emitting light path of described varifocal mirror group, in the reflected light path of described the first catoptron, be provided with the second catoptron of annular, described the first catoptron is convex mirror, and described the second catoptron is concave mirror.
9. lighting device as claimed in claim 8, is characterized in that, described the first catoptron can move along the optical axis of described varifocal mirror group.
10. an active zoom video camera, comprises camera head, it is characterized in that, also comprises the lighting device described in claim 6 to 9 any one, and described camera head is positioned at the bright dipping side of described lighting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192555.6U CN204028449U (en) | 2014-04-18 | 2014-04-18 | A kind of varifocal mirror group, lighting device and active zoom video camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192555.6U CN204028449U (en) | 2014-04-18 | 2014-04-18 | A kind of varifocal mirror group, lighting device and active zoom video camera |
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| CN204028449U true CN204028449U (en) | 2014-12-17 |
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| CN201420192555.6U Expired - Fee Related CN204028449U (en) | 2014-04-18 | 2014-04-18 | A kind of varifocal mirror group, lighting device and active zoom video camera |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093508A (en) * | 2015-07-24 | 2015-11-25 | 北京理工大学 | Variable-focus optical receiving antenna used for mobile visible light communication |
| TWI553262B (en) * | 2015-07-20 | 2016-10-11 | 錼創科技股份有限公司 | Illumination apparatus |
| CN106470311A (en) * | 2015-08-21 | 2017-03-01 | 高准精密工业股份有限公司 | Shooting and illuminator |
| CN109143726A (en) * | 2018-09-28 | 2019-01-04 | 深圳市科诺恩科技有限公司 | A kind of varifocal light-feeding instrument |
-
2014
- 2014-04-18 CN CN201420192555.6U patent/CN204028449U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI553262B (en) * | 2015-07-20 | 2016-10-11 | 錼創科技股份有限公司 | Illumination apparatus |
| CN105093508A (en) * | 2015-07-24 | 2015-11-25 | 北京理工大学 | Variable-focus optical receiving antenna used for mobile visible light communication |
| CN106470311A (en) * | 2015-08-21 | 2017-03-01 | 高准精密工业股份有限公司 | Shooting and illuminator |
| CN109143726A (en) * | 2018-09-28 | 2019-01-04 | 深圳市科诺恩科技有限公司 | A kind of varifocal light-feeding instrument |
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| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address |
Address after: Silver Star Science and technology building 1301 No. 518000 Guangdong province Shenzhen city Longhua District Guanlan community tourism Da BU Xiang Road 8 floor Patentee after: Shenzhen cyber Polytron Technologies Inc Address before: 518000, Guangdong, Shenzhen, Baoan District province Xixiang Bao Lu Road famous industrial products display and procurement center A310 Patentee before: Shenzhen Cybervision Co., Ltd. |
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Effective date of registration: 20170710 Granted publication date: 20141217 |
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Granted publication date: 20141217 Termination date: 20200418 |
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