CN102375302A - Filter switching device - Google Patents
Filter switching device Download PDFInfo
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- CN102375302A CN102375302A CN2010102624938A CN201010262493A CN102375302A CN 102375302 A CN102375302 A CN 102375302A CN 2010102624938 A CN2010102624938 A CN 2010102624938A CN 201010262493 A CN201010262493 A CN 201010262493A CN 102375302 A CN102375302 A CN 102375302A
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- microswitch
- optical filter
- filter
- switching device
- optical
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Abstract
The invention provides a filter switching device arranged in a camera. The filter switching device comprises a first filter, a second filter, a motor for controlling movement of the two filters according to a processor of the camera, and a microswitch, wherein the microswitch is arranged close to the first filter; the microswitch is closed when the first filter is contacted with the microswitch, and the microswitch is disconnected when the first filter is far away from the microswitch; and one end of the microswitch is grounded, and the other end of the microswitch is connected with a voltage source through a resistor and is also connected with the processor of the camera through a connector.
Description
Technical field
The present invention relates to a kind of switching device of optical fiber that is used for video camera.
Background technology
In the design of monitoring camera,, generally can add the design of infrared light sources in order also clearly to record a video at night.Opening this infrared light sources at night can make this monitoring camera to take.But therefore the image colour cast problem that infrared light sources can cause monitoring camera to shoot with video-corder can add infrared filter again before the photosensory assembly of monitoring camera.When being in, this monitoring camera selects this infrared filter night during screening-mode; , this monitoring camera select one to filter the optical filter of light in the daytime when being in the daytime screening-mode.The shortcoming of this design can't learn exactly whether optical filter has correct switching.
Summary of the invention
In view of above content, be necessary to provide a kind of optical filter of can learning whether the switching device of optical fiber of correct switching is arranged.
A kind of switching device of optical fiber; Be installed in the video camera; This switching device of optical fiber comprises that one first optical filter, one second optical filter, are used for controlling according to the processor of video camera the motor and a microswitch of the motion of two optical filters; This microswitch is close in this first optical filter setting, and during this microswitch of this first optical filter contact this microswitch close, this first optical filter during away from this microswitch this microswitch break off an end ground connection of this microswitch; The other end links to each other with a voltage source through a resistance, also links to each other with the processor of this video camera through a connector.
Above-mentioned switching device of optical fiber is judged the position of optical filter through microswitch, thereby can learn whether optical filter has correct switching.
Description of drawings
Fig. 1 is the synoptic diagram of the preferred embodiments of switching device of optical fiber of the present invention.
Fig. 2 is the circuit diagram of switching device of optical fiber among Fig. 1.
Fig. 3 is the synoptic diagram of switching device of optical fiber under another state among Fig. 1.
The main element symbol description
The first end P1
The second end P2
The 3rd end P3
The 4th end P4
Microswitch SW1
Motor M
Resistance R
Embodiment
Below in conjunction with accompanying drawing and preferred embodiments the present invention is described in further detail:
See also Fig. 1 and Fig. 2, the preferred embodiments of switching device of optical fiber of the present invention comprise one be used for the filtering infrared light line optical filter 10, the optical filter 12, a motor M, a base 16, a microswitch SW1 and the resistance R that are used to filter light in the daytime.This switching device of optical fiber is installed between the phtographic lens and image sensor of a video camera, so that phtographic lens can be selected different optical filters when taking with night by day.
This motor M and microswitch SW1 link to each other with this video camera processor inside 20 and control circuit 22 through a connector 19.This processor 20 is exported to this motor M different voltages with different signal through control circuit 22, so that motor M forward rotation or backward rotation, thereby the position of corresponding adjustment two optical filters 10 and 12.
This microswitch SW1 is arranged at an end place of closing on this optical filter 12 on this base 16.In other embodiment, this microswitch SW1 also can be arranged at an end place of closing on this optical filter 10 on this base 16.
This connector 19 comprises first to fourth end P1-P4.This first end P1 links to each other with the inner control circuit 22 of video camera; The second end P2 and the 3rd end P3 link to each other with the two ends of motor M respectively; The 4th end P4 links to each other with first end of this microswitch SW1, and first end of this microswitch SW1 also links to each other the second end ground connection of this microswitch SW1 through resistance R with a voltage source V CC.
Principle of work in the face of switching device of optical fiber of the present invention describes down:
Higher when the residing environment visibility of video camera, when being in daytime, this processor 20 will be controlled this motor M optical filter 12 will be placed between phtographic lens and the image sensor.According to the principle of work of microswitch SW1, this moment, this microswitch SW1 was in off-state, makes the 4th end P4 of this connector 19 receive the signal of a high level owing to this optical filter 12 distance certain apart from microswitch SW1.Processor 20 receives the signal of this high level can judge that this optical filter 12 is between phtographic lens and image sensor at this moment afterwards.
When the residing environment visibility of video camera is lower, during such as night, this processor 20 will be controlled this motor M two optical filters 10 and 12 will be moved to left, so that this optical filter 10 is between phtographic lens and image sensor.This optical filter 12 will contact this microswitch SW1 this moment, and according to the principle of work of microswitch SW1, this moment, this microswitch SW1 was in the state that closes, and the 4th end P4 of this connector 19 will receive a low level signal this moment.Processor 20 can judge that this moment, this motor M moved to optical filter 10 between phtographic lens and the image sensor after receiving this low level signal, and is as shown in Figure 3.
Above-mentioned switching device of optical fiber judges that through processor 20 signal that it received is that high level or low level judge that microswitch SW1 is in the state of closing or off-state, thereby can learn whether optical filter has by correct switching.
Claims (4)
1. switching device of optical fiber; Be installed in the video camera, this switching device of optical fiber comprises that one first optical filter, one second optical filter and are used for controlling according to the processor of video camera the motor of two optical filters motion, and it is characterized in that: this switching device of optical fiber also comprises a microswitch; This microswitch is close to the first optical filter setting; And this microswitch closes when this first optical filter contact microswitch, when this first optical filter during away from microswitch this microswitch break off end ground connection of this microswitch wherein; The other end links to each other with a voltage source through a resistance, also links to each other with the processor of video camera through a connector.
2. switching device of optical fiber as claimed in claim 1 is characterized in that: this first optical filter is one to be used for the optical filter of filtering infrared light line, and this second optical filter is one to be used to filter the optical filter of light in the daytime.
3. switching device of optical fiber as claimed in claim 1 is characterized in that: this first optical filter is one to be used to filter the optical filter of light in the daytime, and this second optical filter is one to be used for the optical filter of filtering infrared light line.
4. switching device of optical fiber as claimed in claim 1 is characterized in that: the other end of this motor and microswitch all links to each other with processor through a connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102624938A CN102375302A (en) | 2010-08-25 | 2010-08-25 | Filter switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102624938A CN102375302A (en) | 2010-08-25 | 2010-08-25 | Filter switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102375302A true CN102375302A (en) | 2012-03-14 |
Family
ID=45794117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102624938A Pending CN102375302A (en) | 2010-08-25 | 2010-08-25 | Filter switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102375302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883489A (en) * | 2015-06-08 | 2015-09-02 | 中磊电子（苏州）有限公司 | Filter switching device and network camera |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2831273Y (en) * | 2005-09-23 | 2006-10-25 | 中国印钞造币总公司 | Auto converter for optical filter of paper money discriminator |
| CN201449507U (en) * | 2009-05-27 | 2010-05-05 | 彭中 | Optical filter switching device |
-
2010
- 2010-08-25 CN CN2010102624938A patent/CN102375302A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2831273Y (en) * | 2005-09-23 | 2006-10-25 | 中国印钞造币总公司 | Auto converter for optical filter of paper money discriminator |
| CN201449507U (en) * | 2009-05-27 | 2010-05-05 | 彭中 | Optical filter switching device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883489A (en) * | 2015-06-08 | 2015-09-02 | 中磊电子（苏州）有限公司 | Filter switching device and network camera |
| CN104883489B (en) * | 2015-06-08 | 2018-07-03 | 中磊电子（苏州）有限公司 | filter switching device and network camera |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |