CN108200322A - A kind of empty burnt solution of video camera camera lens under white-black pattern - Google Patents
A kind of empty burnt solution of video camera camera lens under white-black pattern Download PDFInfo
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- CN108200322A CN108200322A CN201810102642.0A CN201810102642A CN108200322A CN 108200322 A CN108200322 A CN 108200322A CN 201810102642 A CN201810102642 A CN 201810102642A CN 108200322 A CN108200322 A CN 108200322A
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- China
- Prior art keywords
- video camera
- white
- black
- visible ray
- camera lens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Blocking Light For Cameras (AREA)
Abstract
The present invention provides a kind of video camera, the empty burnt solution of camera lens, step are as follows under white-black pattern：Cutoff filter and visible ray edge filter are installed before the imaging sensor of video camera；Video camera black and white illumination threshold and colored illumination threshold are set；Practical illumination and black and white illumination threshold, colored illumination threshold are compared by video camera, judge the switching of cutoff filter and visible ray edge filter, when practical illumination is less than black and white illumination threshold, video camera judgement is converted to white-black pattern, it is switched to visible ray edge filter, when practical illumination is higher than colored illumination threshold, video camera judgement is converted to color mode, is switched to cutoff filter.Advantageous effect of the present invention：Cause video camera under white-black pattern, in the environment that infrared and visible ray coexists, it is seen that the interference of light can be substantially filtered out, and infrared influence reduction can be ignored, and camera lens is only imaged in infrared light, and image clearly is as it can be seen that effectively solve the problems, such as that camera lens void is burnt.
Description
Technical field
The invention belongs to monitor camera technical fields, and more particularly, to a kind of video camera, camera lens is empty burnt under white-black pattern
Solution.
Background technology
There are two types of patterns for current monitor camera, and one kind is color mode, and the special image for shooting daytime, one kind is black
White mode shoots the image at night, the general infrared light filling for using 850nm.During white-black pattern, in addition to our infrared light filling
Lamp, ambient enviroment also usually have the lighting apparatus such as street lamp, ornament lamp, these lamps are all visible rays, and wavelength is actively projected with us
Infrared lamp wavelength difference it is bigger.
For monitor camera under color mode, optical filter is a piece of cutoff filter；Under white-black pattern, optical filter
Divide situations below：The first, be a piece of all wavelengths light all by white glass, thickness is the same as infrared section under color mode
Only optical filter；Second, be a piece of all wavelengths light all by white glass, the infrared cutoff under thickness and color mode
Optical filter is different or completely without white glass.
In both schemes, the first the problem is that, infrared and visible wavelength is different, because of the aperture of camera lens
Greatly, a large amount of light cause camera lens empty burnt serious by that can not be focused on after camera lens on a point；Second the problem is that,
The defocusing amount of compensation visible ray and infrared light is gone by the thickness difference of white glass, the advantage of doing so is that complete infrared without visible
In the case of light, imaging is more clear, and focus is close.But actual conditions are, around because there are visible light sources such as street lamps, still without
Method avoids camera lens empty burnt, stronger by environmental restrictions.
The wave-length coverage of visible ray is in this range of 380nm to 760nm, and the wavelength of infrared light is in 850nm, when these light lead to
After crossing camera lens, the focus of imaging is because of infrared and visible wavelength difference, it is impossible to focus on a point, especially aperture is got over
Greatly, empty burnt degree is more serious.Once these video cameras cannot normally differentiate the details such as people, object in scene, lose empty burnt
Go meaning of monitoring.
Invention content
In view of this, the present invention is directed to propose a kind of empty burnt solution of video camera camera lens under white-black pattern, with solution
The certainly shortcoming of the above problem.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of empty burnt solution of video camera camera lens under white-black pattern, includes the following steps：
A., cutoff filter and visible ray edge filter are installed before the imaging sensor of video camera；
B. the black and white illumination threshold of setting video camera and colored illumination threshold；
C. practical illumination and black and white illumination threshold, colored illumination threshold are compared by video camera, judge that infrared cutoff is filtered
The switching of mating plate and visible ray edge filter, when practical illumination is less than black and white illumination threshold, video camera judgement is converted to black
White mode is switched to visible ray edge filter, and when practical illumination is higher than colored illumination threshold, video camera judgement is converted to coloured silk
Color pattern is switched to cutoff filter.
Further, the cutoff filter thickness is less than or equal to 1mm.
Further, the visible ray edge filter thickness is less than or equal to 1mm.
Further, the cutoff filter allow by light wave-length coverage be 380nm~760nm.
Further, the visible ray edge filter allow by light wave-length coverage be 580nm~940nm.
Further, the threshold value for the infrared light lower limit that the visible ray edge filter allows is 645nm.
Further, the cutoff filter and visible ray edge filter is in the same size, and length is 8.6mm,
Width is 8.4mm.
Relative to the prior art, the empty burnt solution of video camera of the present invention camera lens under white-black pattern have with
Lower advantage：
The empty burnt solution of video camera of the present invention camera lens under white-black pattern causes video camera in white-black pattern
Under, in the environment that infrared and visible ray coexists, it is seen that the interference of light can be substantially filtered out, and infrared influence reduction can be ignored not
Meter, camera lens are only imaged in infrared light, and image clearly is as it can be seen that effective solve the problems, such as that camera lens is empty burnt.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is video camera empty burnt solution flow signal of camera lens under white-black pattern described in the embodiment of the present invention
Figure.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, a kind of empty burnt solution of video camera camera lens under white-black pattern, includes the following steps：
A., cutoff filter and visible ray edge filter are installed before the imaging sensor of video camera；
B. the black and white illumination threshold of setting video camera and colored illumination threshold；
C. practical illumination and black and white illumination threshold, colored illumination threshold are compared by video camera, judge that infrared cutoff is filtered
The switching of mating plate and visible ray edge filter, when practical illumination is less than black and white illumination threshold, video camera judgement is converted to black
White mode is switched to visible ray edge filter, and when practical illumination is higher than colored illumination threshold, video camera judgement is converted to coloured silk
Color pattern is switched to cutoff filter.
The cutoff filter thickness is less than or equal to 1mm.
The visible ray edge filter thickness is less than or equal to 1mm.
The cutoff filter allow by light wave-length coverage for 380nm~760nm, allow wavelength visible
The light of light lower threshold to visible ray upper limit threshold passes through, and the light of other range of wavelength does not allow to pass through.
The visible ray edge filter allow by light wave-length coverage for 580nm~940nm, allow wavelength red
The light of outer smooth lower threshold to infrared light upper limit threshold passes through, and the light of other range of wavelength does not allow to pass through.
The threshold value for the infrared light lower limit that the visible ray edge filter allows is 645nm.
The cutoff filter and visible ray edge filter it is in the same size, length is 8.6mm, wide to be
8.4mm。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. the empty burnt solution of a kind of video camera camera lens under white-black pattern, which is characterized in that include the following steps：
A., cutoff filter and visible ray edge filter are installed before the imaging sensor of video camera；
B. the black and white illumination threshold of setting video camera and colored illumination threshold；
C. practical illumination and black and white illumination threshold, colored illumination threshold are compared by video camera, judge cutoff filter
With the switching of visible ray edge filter, when practical illumination is less than black and white illumination threshold, video camera judgement is converted to black and white mould
Formula is switched to visible ray edge filter, and when practical illumination is higher than colored illumination threshold, video camera judgement is converted to colored mould
Formula is switched to cutoff filter.
2. a kind of empty burnt solution of video camera according to claim 1 camera lens under white-black pattern, it is characterised in that：
The cutoff filter thickness is less than or equal to 1mm.
3. a kind of empty burnt solution of video camera according to claim 1 camera lens under white-black pattern, it is characterised in that：
The visible ray edge filter thickness is less than or equal to 1mm.
4. according to a kind of empty burnt solution of video camera camera lens under white-black pattern any in claims 1 or 2,
It is characterized in that：The cutoff filter allow by light wave-length coverage be 380nm~760nm.
5. according to a kind of empty burnt solution of video camera camera lens under white-black pattern any in claim 1 or 3,
It is characterized in that：The visible ray edge filter allow by light wave-length coverage be 580nm~940nm.
6. according to a kind of empty burnt solution of video camera camera lens under white-black pattern any in claim 1 or 3,
It is characterized in that：The threshold value for the infrared light lower limit that the visible ray edge filter allows is 645nm.
7. a kind of empty burnt solution of video camera according to claim 1 camera lens under white-black pattern, it is characterised in that：
The cutoff filter and visible ray edge filter it is in the same size, length is 8.6mm, and wide is 8.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102642.0A CN108200322A (en) | 2018-02-01 | 2018-02-01 | A kind of empty burnt solution of video camera camera lens under white-black pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102642.0A CN108200322A (en) | 2018-02-01 | 2018-02-01 | A kind of empty burnt solution of video camera camera lens under white-black pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108200322A true CN108200322A (en) | 2018-06-22 |
Family
ID=62591780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102642.0A Pending CN108200322A (en) | 2018-02-01 | 2018-02-01 | A kind of empty burnt solution of video camera camera lens under white-black pattern |
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| CN (1) | CN108200322A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257747A (en) * | 2021-12-24 | 2022-03-29 | 天地伟业技术有限公司 | Camera control method and computer readable storage medium |
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| CN101995628A (en) * | 2009-08-13 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Light filter switcher and image sensing module provided with same |
| CN102547102A (en) * | 2010-12-28 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Camera equipment and image sensor replacing method |
| CN202004867U (en) * | 2011-03-21 | 2011-10-05 | 深圳市保千里电子有限公司 | Day and night camera and infrared filter switching control system |
| CN202083870U (en) * | 2011-05-30 | 2011-12-21 | 深圳市东视电子有限公司 | Optical filter switching mechanism and image pick-up device |
| CN202475619U (en) * | 2012-02-03 | 2012-10-03 | 深圳市保千里电子有限公司 | Night vision system for eliminating stray light |
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| CN114257747B (en) * | 2021-12-24 | 2024-01-23 | 天地伟业技术有限公司 | Video camera control method and computer readable storage medium |
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Application publication date: 20180622 |