CN107290834A - Optical filter switching method and switching device of optical fiber - Google Patents
Optical filter switching method and switching device of optical fiber Download PDFInfo
- Publication number
- CN107290834A CN107290834A CN201610223285.4A CN201610223285A CN107290834A CN 107290834 A CN107290834 A CN 107290834A CN 201610223285 A CN201610223285 A CN 201610223285A CN 107290834 A CN107290834 A CN 107290834A
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- China
- Prior art keywords
- optical filter
- intensity
- switching
- control signal
- switch
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/006—Filter holders
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
-
- 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
Abstract
The invention discloses a kind of optical filter switching method and switching device of optical fiber.Wherein, the optical filter switching method, comprises the following steps：Perform initialization operation.Obtain visual intensity and black light intensity.According to visual intensity and can not luminous intensity generation switch-over control signal.The change of intelligent optical filter is controlled according to switch-over control signal.Optical filter switching method obtains visual intensity and black light intensity so that controlling the change of intelligent optical filter according to visual intensity and invisible intensity, so that in the case of extraneous light intensity critical condition intelligent optical filter will not be caused to switch repeatedly, at the same time, the present invention is the change control visible ray and the transmitance of black light by intelligent optical filter, therefore switching device of optical fiber small volume, performance are stable and reliability is high.
Description
Technical field
The present invention relates to digital filming camera or apparatus for making a video recording, more particularly to a kind of optical filter switching method
And switching device of optical fiber.
Background technology
Most of digitized video camera is required for meeting the requirement of whole day twenty four hours running, the most typical
Be outdoor surveillance camera.But due to daytime and night light in the parameters such as brightness, colour temperature difference show
Write, therefore, generally in the daytime or night can use two groups of different optical filters of function.It is invisible on daytime
Light is (for example：Ultraviolet, infrared lamp etc.) intensity compares conference causes the image production that camera device absorbed
Add lustre to partially, it is therefore desirable to which optical filter isolates black light to eliminate the interference that black light causes imaging.
Evening, it is seen that it is image blurring unclear that luminous intensity can not enough cause that camera device absorbed, it is therefore desirable to filters
Piece should not isolate black light causes the intensity of enhancing light to increase image clearly to strengthen the penetrability of light
Degree.But, existing switching device of optical fiber simply reaches default according to the intensity of extraneous visible light ray
During Intensity threshold, machinery dragging cutoff filter gear reaches the mesh of isolation black light behind camera lens
's.When extraneous visual intensity is less than Intensity threshold, machinery dragging full impregnated optical filter is kept off behind camera lens,
Reach the purpose through black light.Therefore, existing switching device of optical fiber has that volume is big, performance is unstable
The a series of problems such as fixed, poor reliability.At the same time, due to current optical-filter switcher control system,
The visible Photoinduction device of only one of which, is easily caused optical-filter switcher and ceaselessly comes in external world's presence circle's state
Switchback is changed, and is caused optical-filter switcher failure or even is burnt up.
In view of this, it is necessary to provide that a kind of small volume, performance are more stablized, reliability is higher and can keep away in fact
Exempt from optical filter switching method that optical filter switches repeatedly to solve the defect of prior art.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of optical filter switching method, the optical filter switching side
Method obtains visual intensity and black light intensity so that controlling intelligence according to visual intensity and invisible intensity
The change of energy optical filter, so that in the case of extraneous light intensity critical condition intelligent optical filter will not be caused to cut repeatedly
Change, at the same time, the present invention is the change control visible ray and the transmission of black light by intelligent optical filter
Rate, therefore switching device of optical fiber small volume, performance are stable and reliability is high.
In order to solve the above problems, the invention provides a kind of optical filter switching method, comprise the following steps：
Perform initialization operation.
Obtain visual intensity and black light intensity.
According to visual intensity and can not luminous intensity generation switch-over control signal.
The change of intelligent optical filter is controlled according to switch-over control signal.
Preferably, the step of obtaining visual intensity and black light intensity includes：Obtain current time point
Information.
Preferably, after the step of controlling the change of intelligent optical filter according to switch-over control signal, in addition to：
Receive the current state information of intelligent optical filter feedback.
Preferably, according to visual intensity and can not luminous intensity generate switch-over control signal the step of include：
Visual intensity, black light intensity, time point information and current state information are integrated and calculated
To switching magnitude.
Switching magnitude carries out Difference Calculation with preset reference state threshold group and obtains switch-over control signal.
Preferably, switch-over control signal is rectangular wave, sawtooth waveforms or the sine wave of continuously adjustabe.
In order to solve the above problems, present invention also offers a kind of switching device of optical fiber, including：
Initialization unit, for performing initialization operation.
Light intensity acquiring unit, for obtaining visual intensity and black light intensity.
Control command generation unit, for according to visual intensity and can not luminous intensity generate switch-over control signal.
Optical filter switch unit, the change for controlling intelligent optical filter according to switch-over control signal.
Preferably, switching device of optical fiber also includes：
Time acquisition unit, the current time point information for obtaining.
Preferably, switching device of optical fiber also includes：
Feedback information receiving unit, the current state information for receiving intelligent optical filter feedback.
Preferably, switching device of optical fiber also includes：
Integral and calculating unit, for visual intensity, black light intensity, time point information and current state
Information is integrated calculating and obtains switching magnitude.
Difference Calculation unit, carries out Difference Calculation for switching magnitude and preset reference state threshold group and is cut
Change control signal.
Preferably, switch-over control signal is rectangular wave, sawtooth waveforms or the sine wave of continuously adjustabe.
Compared with prior art, the optical filter switching method obtain visual intensity and black light intensity so that
The change of intelligent optical filter is controlled according to visual intensity and invisible intensity, so that will not be in extraneous light intensity
Intelligent optical filter is caused to switch repeatedly in the case of critical condition, at the same time, the present invention is by intelligent optical filtering
The change control visible ray and the transmitance of black light of piece, therefore switching device of optical fiber small volume, performance
Stable and reliability is high.
Brief description of the drawings
Fig. 1 is a kind of high-level schematic functional block diagram of embodiment of switching device of optical fiber of the present invention.
Fig. 2 is a kind of schematic flow sheet of embodiment of optical filter switching method of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and reality
Example is applied, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
Only to explain the present invention, it is not used to limit the present invention.
Fig. 1 illustrates a kind of embodiment of switching device of optical fiber of the present invention.In the present embodiment, the optical filtering
Piece switching device includes initialization unit 10, light intensity acquiring unit 11, the and of control command generation unit 12
Optical filter switch unit 13.
Wherein, initialization unit 10, for performing initialization operation.It should be noted that so-called initial
Change and operate the reset operation for including switching device of optical fiber, intelligent optical filter to return back to original state etc..This reality
Apply by setting initialization unit 10, it is ensured that the intelligent optical filter i.e. controllable first of switching device of optical fiber
Accurate switching.Light intensity acquiring unit 11, for obtaining visual intensity and black light intensity.Control
Order generation unit 12, for according to visual intensity and can not luminous intensity generate switch-over control signal.Filter
Piece switch unit 13, the change for controlling intelligent optical filter according to switch-over control signal.The present embodiment is combined
Visual intensity and invisible intensity have reached to control the change of intelligent optical filter and have avoided intelligent optical filter from existing
The technique effect switched repeatedly in the case of extraneous light intensity critical condition, at the same time, the present invention is by intelligence
The change control visible ray and the transmitance of black light of optical filter, therefore switching device of optical fiber small volume,
Performance is stable and reliability is high.Furthermore, it is necessary to the change of the intelligent optical filter in explanation, the present embodiment
For different discoloration (i.e. different discoloration journeys can be determined according to visual intensity and black light intensity
Amount of the different black light of degree correspondence through the intelligent optical filter of amount and visible light-transmissive of intelligent optical filter).Tool
Body be described as follows (in order to more clearly explanation technical scheme, it is assumed that light intensity have high intensity,
Three kinds of states of moderate strength and low-intensity)：During early morning, it is seen that luminous intensity is moderate strength, black light intensity
For low-intensity, visible light transmissivity 75%, black light light transmittance 30% are caused after intelligent optical filter discoloration.This
Implement by neutralizing using visible ray and black light with improving image definition.Noon, it is seen that luminous intensity
For high intensity and black light intensity is high intensity, visible light transmissivity 50% is caused after intelligent optical filter discoloration,
Black light transmitance 3%.The present embodiment reduces the transmitance of visible ray and black light simultaneously, it is to avoid mistake
Expose the generation of phenomenon.During night, it is seen that luminous intensity is low-intensity and black light intensity is high intensity, intelligence
Visible light transmissivity 80%, black light transmitance 80% are caused after optical filter discoloration.The present embodiment passes through lifting
The transmitance of visible ray and black light, improves the definition of image.
In order to cause the change of intelligent optical filter more accurate and scientific and reasonable, and intelligent optical filter can connect
It is continuous adjustable.In other examples, switching device of optical fiber also includes time acquisition unit 14, feedback letter
Cease receiving unit 15, integral and calculating unit 16 and Difference Calculation unit 17.
Wherein, the time acquisition unit 14 is used to obtain current time point information.Each of every day
It is all different that the visual intensity and black light intensity at time point are most of.The present embodiment obtains the time
Put information and using time point information as the parameter of generation switch-over control signal so that controlling the change of intelligent optical filter
Change more accurate.Feedback information receiving unit 15 is used for the current state information for receiving intelligent optical filter feedback.
It should be noted that so-called current state information is the current discoloration of intelligent optical filter (i.e. visible ray
With amount of the black light through intelligent optical filter).The present embodiment regard current state information as generation switching control
The parameter of signal is so that the change of the intelligent optical filter of control is more accurate.Integral and calculating unit 16, for visible
Luminous intensity, black light intensity, time point information and current state information are integrated calculating and obtain switching value
Value.Difference Calculation unit 17, carries out Difference Calculation for switching magnitude and preset reference state threshold group and obtains
Switch-over control signal.It should be noted that preset reference state threshold group includes multiple preset reference state thresholds
Value, a state of the intelligent optical filter of each preset reference state threshold correspondence, each state correspondence one
Plant discoloration.Furthermore, it is necessary to explanation, switch-over control signal includes delay duration parameter etc., so as to
Switching device of optical fiber re-starts detection after the delay duration parameter, and according to new testing result control
The change of the intelligent optical filter of system.In addition, switch-over control signal is the rectangular wave of continuously adjustabe, sawtooth waveforms or just
String ripple.It should be noted that by control the intensity of the rectangular wave, sawtooth waveforms or sine wave, amplitude, when
The parameters such as width are to reach the effect of intelligent optical filter continuously adjustabe.It should be noted that can realize to intelligence
Other waveforms of optical filter continuously adjustabe effect are also within the protection domain of the present embodiment.
Fig. 2 illustrates a kind of embodiment of optical filter switching method of the present invention.In the present embodiment, the optical filtering
Piece switching method comprises the following steps：
Step S1, performs initialization operation.
Step S2, receives the current state information of intelligent optical filter feedback.
Step S3, obtains visual intensity and black light intensity, obtains current time point information.
Step S4, it is seen that luminous intensity, black light intensity, time point information and current state information are accumulated
Calculating is divided to obtain switching magnitude.
Step S5, switching magnitude carries out Difference Calculation with preset reference state threshold group and obtains switching control letter
Number.
Step S6, the change of intelligent optical filter is controlled according to switch-over control signal.
Step S7, judges whether to receive shutdown command.If receiving shutdown command, execution terminates.If not
Shutdown command is received, step S2 is performed.
The embodiment to invention is described in detail above, but it is only used as example, and the present invention is simultaneously
Do not limit and specific embodiments described above.For a person skilled in the art, it is any to the hair
The equivalent modifications of bright progress are substituted also all among scope of the invention, therefore, are not departing from the present invention's
The impartial conversion and modification made under spirit and spirit, improve etc., should all cover in the scope of the present invention
It is interior.
Claims (10)
1. a kind of optical filter switching method, it is characterised in that comprise the following steps：
Perform initialization operation；
Obtain visual intensity and black light intensity；
According to the visual intensity and it is described can not luminous intensity generation switch-over control signal；
The change of the intelligent optical filter is controlled according to the switch-over control signal.
2. optical filter switching method according to claim 1, it is characterised in that obtain visual intensity
The step of with black light intensity, includes：Obtain current time point information.
3. optical filter switching method according to claim 1, it is characterised in that controlled according to the switching
After the step of signal processed controls the change of the intelligent optical filter, in addition to：
Receive the current state information of the intelligent optical filter feedback.
4. optical filter switching method according to claim 3, it is characterised in that according to the visible ray
Intensity and it is described can not luminous intensity generation switch-over control signal the step of include：
The visual intensity, the black light intensity, the time point information and current state letter
Breath is integrated calculating and obtains switching magnitude；
The switching magnitude carries out Difference Calculation with preset reference state threshold group and obtains switch-over control signal.
5. it is described optical filter switching method according to claim, it is characterised in that the switching control letter
Number be continuously adjustabe rectangular wave, sawtooth waveforms or sine wave.
6. a kind of switching device of optical fiber, it is characterised in that including：
Initialization unit, for performing initialization operation；
Light intensity acquiring unit, for obtaining visual intensity and black light intensity；
Control command generation unit, for according to the visual intensity and it is described can not luminous intensity generation switch
Control signal；
Optical filter switch unit, the change for controlling the intelligent optical filter according to the switch-over control signal.
7. switching device of optical fiber according to claim 6, it is characterised in that the optical filter switching
Device also includes：
Time acquisition unit, the current time point information for obtaining.
8. switching device of optical fiber according to claim 6, it is characterised in that the optical filter switching
Device also includes：
Feedback information receiving unit, the current state information for receiving the intelligent optical filter feedback.
9. switching device of optical fiber according to claim 8, it is characterised in that the optical filter switching
Device also includes：
Integral and calculating unit, for the visual intensity, the black light intensity, time point letter
Breath and the current state information are integrated calculating and obtain switching magnitude；
Difference Calculation unit, carries out Difference Calculation for the switching magnitude and preset reference state threshold group and obtains
To switch-over control signal.
10. switching device of optical fiber according to claim 9, it is characterised in that the switching control
Signal is rectangular wave, sawtooth waveforms or the sine wave of continuously adjustabe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223285.4A CN107290834B (en) | 2016-04-12 | 2016-04-12 | Optical filter switching method and optical filter switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223285.4A CN107290834B (en) | 2016-04-12 | 2016-04-12 | Optical filter switching method and optical filter switching device |
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| Publication Number | Publication Date |
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| CN107290834A true CN107290834A (en) | 2017-10-24 |
| CN107290834B CN107290834B (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610223285.4A Active CN107290834B (en) | 2016-04-12 | 2016-04-12 | Optical filter switching method and optical filter switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111684352A (en) * | 2018-02-09 | 2020-09-18 | 索尼公司 | Filter unit, filter selection method, and image forming apparatus |
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| CN111684352A (en) * | 2018-02-09 | 2020-09-18 | 索尼公司 | Filter unit, filter selection method, and image forming apparatus |
| CN111684352B (en) * | 2018-02-09 | 2022-08-26 | 索尼公司 | Filter unit, filter selection method, and image forming apparatus |
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| CN107290834B (en) | 2020-03-17 |
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Effective date of registration: 20220729 Address after: 200131 floors 1 and 3, building 5, No. 99 and 111 Boyi Road, Lingang New Area, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai Centaur Enterprise Development Group Co.,Ltd. Address before: 518000 411, 412, 413, building h, Baoan Zhigu Science Park, Yintian 4, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: JISHENG PHOTOELECTRIC (SHENZHEN) Co.,Ltd. |
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