CN201142710Y - Video camera adaptive to all-weather - Google Patents
Video camera adaptive to all-weather Download PDFInfo
- Publication number
- CN201142710Y CN201142710Y CNU200720171470XU CN200720171470U CN201142710Y CN 201142710 Y CN201142710 Y CN 201142710Y CN U200720171470X U CNU200720171470X U CN U200720171470XU CN 200720171470 U CN200720171470 U CN 200720171470U CN 201142710 Y CN201142710 Y CN 201142710Y
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- Prior art keywords
- pass filter
- video camera
- control unit
- optical filtering
- camera according
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Abstract
The utility model provides an all-weather-proof camcorder which comprises an image sensor (1) and a filter lens (2) arranged in the front of the image sensor (1). The camcorder is characterized in that: the filter lens (2) comprises a high-pass filter lens (2) and a low-pass filter lens (22); and the high-pass filter lens (21) or the low-pass filter lens (22) can be switched. The camcorder has the advantages that: since the light in the working environment of the camcorder is changeful, the switching filter lens is arranged corresponding to the changeful light, thus eliminating the influence of interference light of the environment on a picture, and obtaining a real and clear picture. In addition, when the camcorder is used under infrared light at night, the low-pass filter lens is adopted, thus eliminating the influence of visible light on the picture and resulting in a more uniform picture. Furthermore, the irradiation of a strong light cannot influence the integral definition of the picture.
Description
[technical field]
The utility model 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.
[utility model content]
In order to solve existing technical problem, the utility model provides a kind of suitable for all-weather to use, the video camera that the suitable for all-weather of working under can infrared lamp of can working under sight also uses.
The utility model solves existing technical problem, 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 be located at the optical filtering 2 in this imageing sensor 1 the place ahead, it is characterized in that: described optical filtering 2 comprises high pass filter 21 and low pass filter 22; Described high pass filter 21 or the 22 changeable uses of described low pass filter.
The utility model 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 utility model further improves, and comprises being used to control the control unit 3 that described optical filtering 2 switches.
The utility model further improves, and described control unit 3 is electromagnetic control type or mechanically controlled type.
The utility model 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 utility model further improves, and described photosensitive circuit 4 inputs one signal is given described control unit 3, and this control unit 3 switches described optical filtering 2 with the illumination that conforms according to this signal.
The utility model further improves, and described high pass filter 21 and described low pass filter 22 placed about side by side, and the switching that described optical filtering 2 move left and right of described control unit 3 controls are carried out described high pass filter 21 and described low pass filter 22 is selected for use.
The utility model 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 the utility model suitable for all-weather 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 the utility model video camera internal structure;
Fig. 2 is the printing opacity principle schematic of high pass filter of the present utility model;
Fig. 3 is the printing opacity principle schematic of low pass filter of the present utility model;
The structural representation that Fig. 4 is the utility model high pass filter and low pass filter when placing side by side.
[embodiment]
Below in conjunction with description of drawings and embodiment the utility model is further specified.
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 utility model comprises high pass filter 21 and low pass filter 22.
Video camera of the present utility model 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 the utility model video camera is CCD (Charge Coupled Device CCD) imageing sensor or CMOS (the complementary matal-oxide semiconductor of Complementary Metal-OxideSemiconductor) imageing sensor, also can be that other knows the color image sensor of knowing.
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 utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. the video camera that uses of a suitable for all-weather, it comprises imageing sensor (1) and be located at the optical filtering (2) in this imageing sensor (1) the place ahead, it is characterized in that: described optical filtering (2) comprises high pass filter (21) and low pass filter (22); Described high pass filter (21) or the changeable use of described low pass filter (22).
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) switches.
4. video camera according to claim 3 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) switches described optical filtering (2) with the illumination that conforms according to this signal.
7. video camera according to claim 2, it is characterized in that: described high pass filter (21) and described low pass filter (22) are placed about side by side, and described control unit (3) is controlled described optical filtering (2) move left and right and carried out the switching of described high pass filter (21) and described low pass filter (22) and select for use.
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 |
|---|---|---|---|
| CNU200720171470XU CN201142710Y (en) | 2007-12-10 | 2007-12-10 | Video camera adaptive to all-weather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720171470XU CN201142710Y (en) | 2007-12-10 | 2007-12-10 | Video camera adaptive to all-weather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142710Y true CN201142710Y (en) | 2008-10-29 |
Family
ID=40070418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720171470XU Expired - Lifetime CN201142710Y (en) | 2007-12-10 | 2007-12-10 | Video camera adaptive to all-weather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201142710Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102823234A (en) * | 2010-04-07 | 2012-12-12 | 普罗杰克逊迪赛恩联合股份有限公司 | Interweaving of ir and visible images |
-
2007
- 2007-12-10 CN CNU200720171470XU patent/CN201142710Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102823234A (en) * | 2010-04-07 | 2012-12-12 | 普罗杰克逊迪赛恩联合股份有限公司 | Interweaving of ir and visible images |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081029 |