CN203533336U - Synchronous variable focal length light source for infrared ball - Google Patents
Synchronous variable focal length light source for infrared ball Download PDFInfo
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- CN203533336U CN203533336U CN201320642577.3U CN201320642577U CN203533336U CN 203533336 U CN203533336 U CN 203533336U CN 201320642577 U CN201320642577 U CN 201320642577U CN 203533336 U CN203533336 U CN 203533336U
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- infrared
- light source
- infrared light
- light supply
- dome
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Abstract
The utility model provides a synchronous variable focal length light source for an infrared ball. The synchronous variable focal length light source comprises an infrared light source, wherein double convex lenses are arranged in the light emitting direction of the infrared light source, a light uniformizing film is arranged between the infrared light source and the double convex lenses, and the light uniformizing film is connected to a control device which controls the light uniformizing film to move between the infrared light source and the double convex lenses in a reciprocating mode. Through changes of the distance between the light uniformizing film and the infrared light source and the double convex lenses, the final light-emitting angle of the infrared light source evenly changes between 65 degrees to 5 degrees, the light-emitting angle and the angle of a machine core lens are completely uniform, and the image effects at night are even. Only one infrared light source is needed, emitted heat is far lower than that of a traditional infrared ball, the service life of the infrared light source is longer than that of the traditional infrared ball, power is low, more energy is saved, and the environment is protected.
Description
Technical field
The utility model relates to infrared dome picture pick-up device field, refers to especially a kind of synchronous zoom light source for infrared dome.
Background technology
Along with the raising day by day that safety monitoring requires, the expense of infrared dome is increasing, and present conventional red ectosphere mostly adopts, is the mode that infraluminescence is controlled in the grouping of dot matrix lamp.Concrete opening ways is: in integrated machine core lens zoom, infrared lamp is divided into three groups or two groups, according to movement zoom, open thereupon or close certain group light combination, on a general infrared dome, there is at most 10-12 dot matrix lamp, be divided into three groups of words of controlling, be generally integrated machine core in 1-5 times of focal length, 4 infrared lamps that angle is large can be opened; In the time of 6-12 times of focal length, those 4 infrared lamps in the middle of angle can be opened, and 4 infrared lamps that angle is large are closed thereupon; When 12 times of focal lengths of movement are above, 4 lamps in the middle of angle and 4 lantern festivals of angle minimum are opened, and 4 lantern festivals that angle is large are closed; When movement zoom arrives larger multiple, the infrared lamp of angle minimum can be opened, to reach distance farthest.The infrared dome light open theory that Here it is sells now.
There is following shortcoming with upper type in employing: first, from optical principle, when the angle of integrated machine core camera lens and the angle of infrared lamp are on all four time, it is best that night vision image effect just can reach, and photoelectric efficiency is at this time also the highest.But because conventional red ectosphere can only be divided into three groups of controls, so can only there be three angles, and the angle lens of integrated machine core is from 65 degree to continuing even variation 5 degree, therefore the angle of camera lens and the lighting angle of infrared lamp only overlap in certain three position, in other positions, infrared light has been wasted, infrared light angle can not meet the viewing angle of movement camera lens, will there is like this " flashlight " phenomenon, be that mid portion is excessively bright, surrounding is excessively dark, or the light of general image is excessively dark.Secondly, can the life-span of infrared lamp have very important relation with dispelling the heat in time.In principle, if the heat of infrared lamp dissipates timely, the life-span of infrared lamp can have more than 10 years, the mode that picture grouping is controlled, in the large focal length of movement (movement is more than six times), 8 infrared lamps of disposable opening, the heat that infrared lamp sends is like this just excessive, cooling system requirement to infrared dome is very high, and current infrared dome design principle can not accomplish to distribute timely so large heat substantially.
Utility model content
The utility model proposes a kind of infrared dome synchronous zoom light source, the infrared light that has solved infrared dome in prior art can not realize with movement camera lens that full angle mates and the caloric value high short problem of life-span that causes.
The technical solution of the utility model is achieved in that
A kind of infrared dome synchronous zoom light source, comprise infrared light supply, on the light direction of described infrared light supply, be provided with biconvex lens, between described infrared light supply and described biconvex lens, be provided with even smooth film, described even smooth film is connected with controls its reciprocating control device between described infrared light supply and described biconvex lens.
Preferred version is that the non-light direction of described infrared light supply is provided with radiator.
Preferred version is, described control device comprises linear stepping motor and conductive bar, and described conductive bar is with external screw thread; Described even smooth film is provided with transmission rod hole, and described transmission rod hole is with the internal thread mating with conductive bar external screw thread; Described conductive bar is located in described transmission rod hole; Between described radiator and biconvex lens, be connected with support bar, described even smooth film is provided with support rod hole, and described support bar is located in described support rod hole.
Preferred version is that described radiator is provided with fan.
Preferred version is that described infrared light supply is LED infrared light supply.
The beneficial effects of the utility model are:
First, the utility model can allow the final rising angle of infrared light supply change equably to being divided into 30 equal portions between 5 degree at 65 degree, and the zoom of movement camera lens is to be divided into 18 equal portions conventionally, at most to be divided into 30 equal portions, like this, our synchronous zoom light source can guarantee that the angle of lighting angle and movement camera lens is in full accord at any time, and nighttime image effect is even, can not have flashlight effect, light source does not have the waste in brightness yet; Secondly, adopt synchronous zoom technology only need to adopt an infrared light supply, unlike traditional infrared dome, need 10-12 lamp even more, in contrast, adopt synchronous zoom light source, the heat that light source sends is well below traditional infrared dome, so from the life-span, adopt the infrared dome of synchronous zoom light source can be longer than traditional infrared dome far away; Finally, from environment protection significance, the power of synchronous zoom light source is much smaller, more energy-conserving and environment-protective.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of synchronous zoom light source for the utility model infrared dome;
In figure:
1, infrared light supply; 2, biconvex lens; 3, even smooth film; 4, radiator; 5, linear stepping motor; 6, conductive bar; 7, transmission rod hole; 8, support bar; 9, support rod hole; 10, fan.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of infrared dome synchronous zoom light source, comprises infrared light supply 1, and what the present embodiment adopted is LED infrared light supply.The non-light direction of infrared light supply 1 is provided with radiator 4, light direction at infrared light supply 1 is provided with biconvex lens 2, between infrared light supply 1 and biconvex lens 2, be provided with even smooth film 3, even smooth film 3 is connected with controls its reciprocating control device between infrared light supply 1 and biconvex lens 2.Control device in the present embodiment comprises linear stepping motor 5 and conductive bar 6, and conductive bar 6 is with external screw thread; Even smooth film 3 is provided with transmission rod hole 7, and transmission rod hole 7 is with the internal thread mating with conductive bar 6 external screw threads; Conductive bar 6 is located in transmission rod hole 7; Between radiator 4 and biconvex lens 2, be connected with support bar 8, even smooth film 3 is provided with support rod hole 9, and support bar 8 is located in support rod hole 9.On radiator 4, be also provided with fan 10.
The angle of the light that even smooth film 3 sends infrared light supply 1 is carried out primary preliminary change, then via biconvex lens 2, realizes secondary again and changes; Linear stepping motor 5 drives conductive bar 6 to rotate, even smooth film 3 is along with the rotation of conductive bar 6 can move back and forth between infrared light supply 1 and biconvex lens 2, by changing the distance between even smooth film 3 and infrared light supply 1 and biconvex lens 2, the final rising angle that makes infrared light supply 1 at 65 degree to even variation between 5 degree, can with the movement shots match of infrared dome.The heat that radiator 4 and fan 10 produce infrared light supply 1 distributes in time, has greatly extended the service life of infrared dome.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an infrared dome synchronous zoom light source, it is characterized in that: comprise infrared light supply, on the light direction of described infrared light supply, be provided with biconvex lens, between described infrared light supply and described biconvex lens, be provided with even smooth film, described even smooth film is connected with controls its reciprocating control device between described infrared light supply and described biconvex lens.
2. a kind of infrared dome synchronous zoom light source as claimed in claim 1, is characterized in that: the non-light direction of described infrared light supply is provided with radiator.
3. a kind of infrared dome synchronous zoom light source as claimed in claim 2, is characterized in that: described control device comprises linear stepping motor and conductive bar, and described conductive bar is with external screw thread; Described even smooth film is provided with transmission rod hole, and described transmission rod hole is with the internal thread mating with conductive bar external screw thread; Described conductive bar is located in described transmission rod hole; Between described radiator and biconvex lens, be connected with support bar, described even smooth film is provided with support rod hole, and described support bar is located in described support rod hole.
4. a kind of infrared dome synchronous zoom light source as claimed in claim 2 or claim 3, is characterized in that: described radiator is provided with fan.
5. a kind of infrared dome synchronous zoom light source as claimed in claim 4, is characterized in that: described infrared light supply is LED infrared light supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642577.3U CN203533336U (en) | 2013-10-17 | 2013-10-17 | Synchronous variable focal length light source for infrared ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642577.3U CN203533336U (en) | 2013-10-17 | 2013-10-17 | Synchronous variable focal length light source for infrared ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203533336U true CN203533336U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642577.3U Expired - Fee Related CN203533336U (en) | 2013-10-17 | 2013-10-17 | Synchronous variable focal length light source for infrared ball |
Country Status (1)
| Country | Link |
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| CN (1) | CN203533336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644667A (en) * | 2018-06-04 | 2018-10-12 | 吉林省瑞中科技有限公司 | A kind of LED light device and means of illumination with video camera simultaneously match |
-
2013
- 2013-10-17 CN CN201320642577.3U patent/CN203533336U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644667A (en) * | 2018-06-04 | 2018-10-12 | 吉林省瑞中科技有限公司 | A kind of LED light device and means of illumination with video camera simultaneously match |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141017 |
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| EXPY | Termination of patent right or utility model |