CN101184161A - Video camera suitable for all-weather use - Google Patents
Video camera suitable for all-weather use Download PDFInfo
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- CN101184161A CN101184161A CNA2007101249543A CN200710124954A CN101184161A CN 101184161 A CN101184161 A CN 101184161A CN A2007101249543 A CNA2007101249543 A CN A2007101249543A CN 200710124954 A CN200710124954 A CN 200710124954A CN 101184161 A CN101184161 A CN 101184161A
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Abstract
The invention provides a camera suitable for all-weather use, comprising an image sensor (1) and a filter (2) arranged at the front of the image sensor (1). The filter (1) comprises a high-pass filter (21). The invention is characterized in that the filter (2) also comprises a low-pass filter (22) and thus the infrared rays or visible lines can be selectively filtered. The invention has the advantages that the invention can switch filters according to the light variations in different working environments of the camera, reducing the influence of light interference from different environment on picture and producing more real and clear pictures; besides, when working under an infrared lamp at night, the invention by adopting the low-pass filter can eliminate the influence of visible lights on pictures, making the pictures more uniform; the overall picture clarity will not be influenced even under the radiation of strong light source.
Description
[technical field]
The present invention relates to the safety monitoring technical field, the video camera that particularly a kind of suitable for all-weather uses.
[background technology]
When existing video camera uses by day,, set firmly an infrared filter, be used for the interference of filtering infrared light line in the front of imageing sensor for making undistorted, consistent with eye-observation of picture color.When video camera used at night, adopt infrared lamp irradiation usually, cause this video camera can't work at night because of the existence of the infrared filter that sets firmly this moment.
[summary of the invention]
In order to solve existing technical problem, the invention provides that a kind of suitable for all-weather uses, the video camera that the suitable for all-weather of working under can infrared lamp of can working also uses under sight.
The present invention solves the existing (technical problem that has, the technical scheme that is adopted is: the video camera that provides a kind of suitable for all-weather to use, it comprises imageing sensor 1 and is located at the optical filtering 2 in this imageing sensor 1 the place ahead, this optical filtering 2 comprises high pass filter 21, it is characterized in that: described optical filtering 2 also comprises low pass filter 22, and this optical filtering 2 can select to filter infrared ray or object line.
The present invention further improves, and described high pass filter 21 is that infrared ray is penetrable, visible light is not penetrable; Described low pass filter 22 is that visible light is penetrable, infrared ray is not penetrable.
The present invention further improves, and comprises being used to control the control unit 3 that described optical filtering 2 is selected for use.
The present invention further improves, and described control unit 3 is electromagnetic control type or mechanically controlled type.
The present invention further improves, and comprises the photosensitive circuit 4 that is used for testing environment illumination intensity, and this photosensitive circuit 4 links to each other with control unit.
The present invention further improves, and described photosensitive circuit 4 inputs one signal is given described control unit 3, and this control unit 3 selects for use described optical filtering 2 with the illumination that conforms according to this signal.
The present invention further improves, and described high pass filter 21 and described low pass filter 22 placed about side by side, and described optical filtering 2 move left and right of described control unit 3 controls are carried out selecting for use of described high pass filter 21 and described low pass filter 22.
The present invention further improves, and described imageing sensor 1 is ccd image sensor or cmos image sensor.
Compared to prior art, the beneficial effect of the video camera that suitable for all-weather of the present invention uses is: because of the surround lighting of video camera work changes, the optical filtering that switchable type is set of Shi Yinging with it, disturb the influence of light in the environment thereby removed, obtain truer, picture effect clearly picture.In addition, when working under the infrared lamp night,, removed the influence of visible light, made picture more even, even strong light source irradiation can not influence the whole definition of picture yet to picture because of adopting the low pass filter.
[description of drawings]
Fig. 1 is the schematic diagram of video camera internal structure of the present invention;
Fig. 2 is the printing opacity principle schematic of high pass filter of the present invention;
Fig. 3 is the printing opacity principle schematic of low pass filter of the present invention;
Structural representation when Fig. 4 be placement side by side for high pass filter of the present invention and low pass filter.
[embodiment]
The present invention is further described below in conjunction with description of drawings and embodiment.
As shown in Figure 1.The video camera that a kind of suitable for all-weather uses, it comprises imageing sensor 1 and is located at the optical filtering 2 in this imageing sensor 1 the place ahead that the light of subject imports in the video camera by camera lens 5, reaches imageing sensor 1 after optical filtering 2 filters interference light.Optical filtering 2 is a switchable type, selects optical filtering 2 with its adaptation for use according to the difference of the interference light that filters.Optical filtering 2 of the present invention comprises high pass filter 21 and low pass filter 22.
Video camera of the present invention comprises and is used to control the control unit 3 that optical filtering 2 switches that this control unit 3 is electromagnetic control type or mechanically controlled type; Also comprise photosensitive circuit 4, be used for the intensity of testing environment illumination.This photosensitive circuit 4 inputs one signal is given control unit 3, and control unit 3 switches optical filtering 2 with the illumination that conforms according to this signal.
As shown in Figure 2.High pass filter 21 is that infrared ray is penetrable, visible light is penetrable hardly; Promptly for the light of wavelength between 760 to 850 nanometers, energy does not almost lose when penetrating; But almost can not pass for the light of wavelength between 330 to 760 nanometers.
As shown in Figure 3.Low pass filter 22 is that visible light is penetrable, infrared ray is penetrable hardly; Promptly for the light of wavelength between 330 to 760 nanometers, energy does not almost lose when penetrating; But almost can not pass for the light of wavelength between 760 to 850 nanometers.
As shown in Figure 4.Optical filtering 2 is that high pass filter 21 and low pass filter 22 placed for about arranged side by side, and electromagnetic type control unit 3 control high pass filters 21 and low pass filter 22 move left and right are switched and selected for use.
The imageing sensor 1 of video camera of the present invention is CCD (Charge Coupled Device CCD) imageing sensor or CMOS (the complementary matal-oxide semiconductor of Complementary Metal-Oxide Semiconductor) imageing sensor.
Because of the surround lighting of video camera work changes, such as replacing of daytime and night, need remove ultrared interference during daytime, need remove the interference of visible light during night, the optical filtering that switchable type is set of Shi Yinging with it, select the high pass filter when selecting low pass filter, night daytime for use for use, disturb the influence of light, obtain truer, picture effect clearly picture thereby removed according to environment needs.Particularly, work under the infrared lamp at night, some strong radiation source can influence the definition of local feature; Illuminating lamp as vehicle can cause the image blurring of license plate number, and adopt the low pass filter this moment, removed the influence of high light to picture, makes picture integral body more even, more clear.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. the video camera that uses of a suitable for all-weather, it comprises imageing sensor (1) and is located at the optical filtering (2) in this imageing sensor (1) the place ahead, this optical filtering (2) comprises high pass filter (21), it is characterized in that: described optical filtering (2) also comprises low pass filter (22), and this optical filtering (2) can select to filter infrared ray or object line.
2. video camera according to claim 1 is characterized in that: described high pass filter (21) is that infrared ray is penetrable, visible light is not penetrable; Described low pass filter (22) is that visible light is penetrable, infrared ray is not penetrable.
3. video camera according to claim 1 is characterized in that: comprise being used to control the control unit (3) that described optical filtering (2) is selected for use.
4. video camera according to claim 4 is characterized in that: described control unit (3) is electromagnetic control type or mechanically controlled type.
5. video camera according to claim 1 is characterized in that: comprise the photosensitive circuit (4) that is used for testing environment illumination intensity, this photosensitive circuit (4) links to each other with control unit.
6. video camera according to claim 5 is characterized in that: described photosensitive circuit (4) input one signal is given described control unit (3), and this control unit (3) selects for use described optical filtering (2) with the illumination that conforms according to this signal.
7. video camera according to claim 1, it is characterized in that: place about described high pass filter (21) and described low pass filter (22) are arranged side by side, described control unit (3) is controlled described optical filtering (2) move left and right and is carried out selecting for use of described high pass filter (21) and described low pass filter (22).
8. video camera according to claim 1 is characterized in that: described imageing sensor (1) is ccd image sensor or cmos image sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101249543A CN101184161A (en) | 2007-12-10 | 2007-12-10 | Video camera suitable for all-weather use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101249543A CN101184161A (en) | 2007-12-10 | 2007-12-10 | Video camera suitable for all-weather use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101184161A true CN101184161A (en) | 2008-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101249543A Pending CN101184161A (en) | 2007-12-10 | 2007-12-10 | Video camera suitable for all-weather use |
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| CN (1) | CN101184161A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413275A (en) * | 2011-11-23 | 2012-04-11 | 深圳远瞻环宇科技有限公司 | White light camera |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN104885451A (en) * | 2012-11-23 | 2015-09-02 | Lg电子株式会社 | Method and apparatus for obtaining 3D image |
| CN106570441A (en) * | 2015-10-09 | 2017-04-19 | 微软技术许可有限责任公司 | System used for posture recognition |
-
2007
- 2007-12-10 CN CNA2007101249543A patent/CN101184161A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413275A (en) * | 2011-11-23 | 2012-04-11 | 深圳远瞻环宇科技有限公司 | White light camera |
| CN104885451A (en) * | 2012-11-23 | 2015-09-02 | Lg电子株式会社 | Method and apparatus for obtaining 3D image |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN106570441A (en) * | 2015-10-09 | 2017-04-19 | 微软技术许可有限责任公司 | System used for posture recognition |
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Open date: 20080521 |