CN105068359A - Color filter with adjustable central wavelength and color filtering method - Google Patents
Color filter with adjustable central wavelength and color filtering method Download PDFInfo
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- CN105068359A CN105068359A CN201510516548.6A CN201510516548A CN105068359A CN 105068359 A CN105068359 A CN 105068359A CN 201510516548 A CN201510516548 A CN 201510516548A CN 105068359 A CN105068359 A CN 105068359A
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- color filter
- centre wavelength
- filter
- adjustable
- bandpass filter
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Abstract
The invention discloses a color filter with an adjustable central wavelength and a color filtering method. The color filter with an adjustable central wavelength comprises an adjustable bandpass light filter module, a power converter, a built-in power supply, a controller, a working state display module, a temperature sensor, and a wavelength adjustment button. The central wavelength of the color filter is switched and controlled in a manual mode or through a camera; a common filter can usually realize a single visual effect, the color filter with the adjustable central wavelength of the invention can achieve multiple photographing effects, and apart from basic functions of the color filter, functions of a UV lens, a polarizer and a gray level lens can also be realized; when multiple central wavelengths are used for photographing a still life, the problem of irreversible photographing effects caused by using the common color filter can be solved; and the color filter can be widely applied to landscape photography, art photography and other related fields.
Description
Technical field
The present invention relates to photographic goods field, specifically refer to the color filter that a kind of centre wavelength is adjustable and filtering process.
Background technology
Along with camera work development be gradually improved, the requirement of people to photographic goods also improves thereupon, filter is as a kind of supplementary mode of Professional Photography, and a kind of photographic accessory the most common, the visual effect that naked eyes at ordinary times be can't see can be realized, be widely used in Professional Photography, field of photography.
Filter conventional at present mainly comprises UV mirror, polariscope, gradual change mirror, gray out, dim light mirror and color filter etc.UV mirror can ultraviolet ray filtering; Polariscope is also known as PL mirror, only accept the light of single direction, get rid of the light of reflection, effect is exactly to photograph more blue sky the most intuitively, the object of shooting inside glass does not have reflective yet, is the filter that can improve picture that current each large-scale commerce camera mechanism uniquely accepts; Dim light mirror is also known as ND mirror, and its use is exactly the luminous flux being decreased through filter; Color filter is mainly used for intensifying when taking black-and-white photograph, such as red filter can absorb blue light, produce the effect at romantic sky effect or shooting similar moonlit night on daytime, for forcing down the color of sky and creating beautiful contrast to cloud layer in black and white landscape photography, black-and-white photograph does not have photochrome so gorgeous after all, realizes enough large contrast and can create the sky effect very with impulsive force.
But with regard to filter conventional at present, the filter of a type can only realize single visual effect usually, if need to reach multiple shooting effect, then need multiple filter superposition, compound use, this is very inconvenient concerning the photography of field.Meanwhile, different from simple later image process, due to the use of filter, the image effect of shooting is irreversible; Once employ filter irrelevantly, may form to the image of shooting the harmful effect being difficult to retrieve.
Summary of the invention
The color filter that the object of the present invention is to provide a kind of centre wavelength adjustable and filtering process, solve current filter color filtration single, use colour filter cause the irreversible problem of shooting effect, realize the function of multicolour filter.
Object of the present invention is achieved through the following technical solutions:
The color filter that centre wavelength is adjustable, comprising:
Light color captured by bandpass filter module regulates, filters visible ray;
Power supply changeover device: the direct supply provided by built-in power converts AC power to, frequency is 1kHz ~ 10kHz, and amplitude is 0V ~ 10V, dutycycle 1:1;
Built-in power: provide electric energy to all parts;
Controller: controller obtains corresponding driving data according to the temperature computing of real-time detection, thus to the centre wavelength drift that the change of environment temperature causes;
Duty display module: the display centre wavelength of color filter and the dump energy of built-in power,
Temperature sensor: the temperature of bandpass filter module is detected, and feeds back to controller;
Wavelength regulation button: the expection operation wavelength adjusting bandpass optical filter module.
The present invention comprises bandpass filter module, controller, duty display module, power supply changeover device, built-in power, temperature sensor, and wavelength regulation button, wherein, power supply changeover device is in the state opened at power switch under, the DC voltage of built-in power is converted to the multichannel AC signal that frequency is 1kHz, according to the real time temperature of temperature sensor feedback and the centre wavelength of current expection work, calculated by controller and need to be loaded into the voltage magnitude in bandpass filter module, control power supply changeover device and drive bandpass filter module, under being at power switch the state opened, wavelength regulation button can be used to adjust the expection operation wavelength of bandpass filter module, duty display module shows the centre wavelength of current bandpass filter module and the dump energy situation of built-in power, the color filter that centre wavelength of the present invention is adjustable can be docked by adapter ring with the photographic lens of Multiple Type specification, is arranged on the position of lens hood, quick and easy for installation, use built-in rechargeable battery as color filter power supply, color filter can carry out work independent of camera, and the centre wavelength of color filter is undertaken switching and controlling by manual mode or camera, common filter can only realize single visual effect usually, and the color filter that centre wavelength of the present invention is adjustable can reach multiple shooting effect, except the basic function with colour filter, can realize the function of UV mirror, polariscope and gray scale mirror simultaneously, use multiple centre wavelength to take still life, can solve and use ordinary color filter to cause the irreversible problem of shooting effect, be with a wide range of applications in landscape photography, artistic photography and other association area.
Described bandpass filter module comprises the encapsulating housing with light inlet, light-emitting window, at the light inlet of encapsulating housing, front window glass is installed, at the light-emitting window of encapsulating housing, rear hatch glass is installed, the bandpass filter module between front window glass and rear hatch glass is installed in encapsulating housing.The present invention by installing a bandpass filter module in encapsulating housing, in use centre wavelength can be adjusted, the color filter that centre wavelength is adjustable can reach multiple shooting effect, except the basic function with colour filter, the function of UV mirror, polariscope and gray scale mirror can be realized simultaneously, use multiple centre wavelength to take still life, can solve and use ordinary color filter to cause the irreversible problem of shooting effect; The present invention is with a wide range of applications in landscape photography, artistic photography and other association area.
Described bandpass filter module comprises tunable optical filter, is fixed with broadband belt pass filter in the both sides of tunable optical filter respectively by optical veneering rete.Be fixedly connected with by gluing together rete between tunable optical filter with broadband belt pass filter, gummed rete makes the adjacent interfaces of tunable optical filter and broadband belt pass filter realize index matching, the reflection loss of effective minimizing light, improves the transmitance of bandpass filter module.
Described tunable optical filter is liquid crystal tunable filter, and broadband belt pass filter is the bandpass filter of the visible light wave range that is plated to of multilayer dielectric film at 400nm ~ 760nm, and in its passband, transmitance is more than 95%.Bandpass filter substantially covers whole visible light wave range through wave band, avoid spectral information disappearance to greatest extent, and the color of image problem of dtmf distortion DTMF caused thus.
Specifically, bandpass filter module is made up of five parts, tunable optical filter is liquid crystal tunable filter, broadband belt pass filter is the visible light wave range 400nm ~ 760nm bandpass filter adopting multilayer dielectric film to be plated to, in passband, transmitance reaches more than 95%, optical veneering rete is a kind of bi-component ultraviolet sensitivity optical light glue, after tunable optical filter and the bonding of broadband belt pass filter, use UV-irradiation that optical veneering rete is just solidified, again whole for the bandpass filter module constant temperature oven putting into about 60 DEG C is completed solidification process in 6 hours.
Front window glass and rear hatch glass adopt fused quartz material to make, and its bore is Ф 70mm, and thickness is 3mm, is all coated with the anti-reflective film of visible light wave range at front window glass and rear hatch glass, the transmitance more than 98% of individual layer window glass.Window glass to bandpass filter module have dust-proof, every multiple effects such as wet and protections, the bore of Ф 70mm can mate the commercial photographic lens of major part in the market; The fused quartz material adopted has that hardness is large, expansion coefficient is low, chemical stability and the good feature of electrical insulation capability, and maximum hardness can reach Mohs seven grades, and optical property is very excellent, effectively can reduce the impact of bandpass filter on picture quality.
At the light-emitting window of described encapsulating housing, adapter ring is installed.Camera lens adapter ring and encapsulating structure relatively independent, be interconnected by the screw of four M3, camera lens adapter ring convenient disassembly, and there is multiple screw thread specification can replace, thus be connected with the photographic lens of the multiple same model in existing market, because bandpass filter module has Polarization-Sensitive feature, encapsulating structure is rotated to an angle vertically, color filter of the present invention can realize common polariscopic function simultaneously, 0 ° can be covered to Same Scene shooting by rotary seal assembling structure, multiple images of 45 ° and 90 °, or can cover red to Same Scene shooting, green, multiple images of blue three wave bands, then by carrying out corresponding data processing to these images, the reverse inverting of shooting process can be made, namely the object that shooting effect is reversible is reached.
Also comprise power switch, USB interface, wherein power switch controls the transmission of electricity state of built-in power; USB interface is used for color filter and host computer and communicates to connect, to amendment and the renewal of color filter plug-in and driving data.
A filtering process for the color filter that centre wavelength is adjustable, comprises the following steps:
A () temperature sensor gathers the shooting temperature of bandpass filter module, and flow to controller;
B () controller matches one according to the centre wavelength of the temperature received, current expection work needs to be loaded into the voltage magnitude in bandpass filter module, and this voltage is flowed to power supply changeover device;
C () power supply changeover device provides power supply according to the voltage magnitude just received to bandpass filter module, thus the centre wavelength of adjustment bandpass filter module.
Filter method of the present invention, the centre wavelength of employing expection work and environment temperature are as two parameter benchmarks, thus carry out rational matching operation, obtain the amplitude of a control voltage, power conversion is carried out using this amplitude as benchmark, thus the operating voltage of adjustment bandpass filter module, realize the adjustment of its centre wavelength, first the method utilizes built-in temperature sensor testing environment temperature, then utilizes preset driving data to adopt the method for data fitting and interpolation to obtain the driving voltage amplitude with real time environment Temperature Matching; This method effectively can compensate the centre wavelength drift caused due to variation of ambient temperature on the one hand, improves the positioning precision of the wavelength at center; On the other hand, relative to the method adopting active temperature to control, greatly can reduce the electric quantity consumption of device, effectively extend working time and the stand-by time of device.
The present invention compared with prior art, has following advantage and beneficial effect:
The color filter that a kind of centre wavelength of 1 the present invention is adjustable and filtering process, the color filter that centre wavelength is adjustable can reach multiple shooting effect, except the basic function with colour filter, the function of UV mirror, polariscope and gray scale mirror can be realized simultaneously, use multiple centre wavelength to take still life, can solve and use ordinary color filter to cause the irreversible problem of shooting effect; The present invention is with a wide range of applications in landscape photography, artistic photography and other association area;
The color filter that a kind of centre wavelength of 2 the present invention is adjustable and filtering process, camera lens adapter ring and encapsulating structure relatively independent, be interconnected by the screw of four M3, camera lens adapter ring convenient disassembly, and there is multiple screw thread specification can replace, thus be connected with the photographic lens of the multiple same model in existing market, because bandpass filter module has Polarization-Sensitive feature, encapsulating structure is rotated to an angle vertically, color filter of the present invention can realize common polariscopic function simultaneously, 0 ° can be covered to Same Scene shooting by rotary seal assembling structure, multiple images of 45 ° and 90 °, or can cover red to Same Scene shooting, green, multiple images of blue three wave bands, then by carrying out corresponding data processing to these images, the reverse inverting of shooting process can be made, namely the object that shooting effect is reversible is reached.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is theory diagram of the present invention;
Fig. 2 be in Fig. 1 bandpass filter module partly cut open structural representation;
Fig. 3 is the inner structure schematic diagram of bandpass filter module in Fig. 2;
The color filter that the centre wavelength that Fig. 4 is is adjustable through spectral sequence schematic diagram.
Mark and corresponding parts title in accompanying drawing:
1-bandpass filter module, 2-controller, 3-duty display module, 4-power supply changeover device, 5-built-in power, 6-temperature sensor, 7-USB interface, 8-power switch, 9-wavelength regulation button, 10-broadband belt pass filter, 11-tunable optical filter, 12-light inlet, 13-optical veneering rete, 14-light-emitting window, 15-encapsulating housing, 16-adapter ring, 17-front window glass, 18-rear hatch glass.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment
As shown in Figure 1, the color filter that a kind of centre wavelength of the present invention is adjustable, comprise 9 parts, bandpass filter module 1, controller 2, duty display module 3, power supply changeover device 4, built-in power 5, temperature sensor 6, usb data interface 7, power switch 8 and wavelength regulation button 9, wherein, power supply changeover device 4 is in the state opened at power switch 8 under, the DC voltage of built-in power 5 is converted to the multichannel AC signal that frequency is 1kHz, the real time temperature fed back according to temperature sensor 6 and the centre wavelength of current expection work, needed to be loaded into the voltage magnitude in bandpass filter module 1 by calculating of controller 2, control power supply changeover device 4 and drive bandpass filter module 1, under being at power switch 8 state opened, wavelength regulation button 9 can be used to adjust the expection operation wavelength of bandpass filter module 1, duty display module 3 shows the centre wavelength of current bandpass filter module 1 and the dump energy situation of built-in power 5, usb data interface 7 is used to download the built-in control program in drive control module and driving data and to upgrade, also can charge to built-in power 5, in the present embodiment, built-in power, 5 adopt a kind of voltage to be the lithium battery of 3.7V, capacity is 3000mAh, controller 2 adopts a kind of ARM controller STM32F103 to realize, power supply changeover device 4 adopts digital to analog converter AD5372 to produce the drive singal on much 20 tunnels, and signal frequency is 1kHz, and signal amplitude is 0 ~ ± 10V, duty display module 3 adopts LED charactron or LCDs to realize.
As shown in Fig. 2 to 3, bandpass filter module 1 partly cuts open structural representation, comprise the encapsulating housing 15 with light inlet 12, light-emitting window 14, at the light inlet 12 of encapsulating housing 5, front window glass 17 is installed, at the light-emitting window 14 of encapsulating housing 15, rear hatch glass 18 is installed, front window glass 17 and rear hatch glass 18 adopt fused quartz material to make, its bore is Ф 70mm, thickness is 3mm, the anti-reflective film of visible light wave range is all coated with, the transmitance more than 98% of individual layer window glass at front window glass 17 and rear hatch glass 18, bandpass filter module 1 between front window glass 17 and rear hatch glass 18 is installed in encapsulating housing 15, bandpass filter module 1 is made up of five parts, tunable optical filter 11 is liquid crystal tunable filter, broadband belt pass filter 10 is the visible light wave range 400nm ~ 760nm bandpass filter adopting multilayer dielectric film to be plated to, in passband, transmitance reaches more than 95%, optical veneering rete 13 is a kind of bi-component ultraviolet sensitivity optical light glue, after tunable optical filter 11 and broadband belt pass filter 10 are bonded, use UV-irradiation that optical veneering rete is just solidified, again whole for the bandpass filter module constant temperature oven putting into about 60 DEG C is completed solidification process in 6 hours, at the light-emitting window 14 of encapsulating housing 15, adapter ring 16 is installed, camera lens adapter ring and encapsulating structure relatively independent, be interconnected by the screw of four M3, camera lens adapter ring convenient disassembly, and there is multiple screw thread specification can replace, thus be connected with the photographic lens of the multiple same model in existing market, because bandpass filter module has Polarization-Sensitive feature, encapsulating structure is rotated to an angle vertically, color filter of the present invention can realize common polariscopic function simultaneously, 0 ° can be covered to Same Scene shooting by rotary seal assembling structure, multiple images of 45 ° and 90 °, or can cover red to Same Scene shooting, green, multiple images of blue three wave bands, then by carrying out corresponding data processing to these images, the reverse inverting of shooting process can be made, namely the object that shooting effect is reversible is reached.
The color filter that centre wavelength is adjustable and a filtering process, carry out according to following steps:
A () temperature sensor gathers the shooting temperature of bandpass filter module, and flow to controller;
B () controller matches one according to the centre wavelength of the temperature received, current expection work needs to be loaded into the voltage magnitude in bandpass filter module, and this voltage is flowed to power supply changeover device;
C () power supply changeover device provides power supply according to the voltage magnitude just received to bandpass filter module, thus the centre wavelength of adjustment bandpass filter module.
Fig. 4 be the adjustable color filter of centre wavelength of the present invention through spectral sequence schematic diagram, wherein the centre wavelength of color filter can use wavelength regulation button 9 to adjust to centre wavelength W
1, W
2, W
3..., W
n in any one; When the centre wavelength of bandpass filter module 1 adjusts to W
1, W
2, W
3..., W
n in arbitrary value time, centre wavelength tunable color filter of the present invention is just equivalent to common color filter, has polariscopic effect simultaneously, bandpass filter module, the quantity of 1 centre wavelength
ncan arrange in controller 2 as required.In the present embodiment, in 420nm ~ 720nm wave band, be provided with altogether
n=11 centre wavelength values, lay respectively at 420nm, 450nm, 480nm ..., 690nm and 720nm place, adjacent two centre wavelengths be spaced apart 30nm.As can be seen from Figure 4, the color filter that centre wavelength of the present invention is adjustable can realize the colour filter function that multiple conventional multilayer dielectric filter just can complete.For open air photography, this color filter makes filtering effects become more rich and varied on the one hand, except the basic function with colour filter, can realize the function of UV mirror, polariscope and gray scale mirror, another aspect also makes carrying of photographic goods and use becomes convenient simultaneously.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the color filter that centre wavelength is adjustable, is characterized in that, comprising:
Bandpass filter module (1): the light color captured by adjustment, filters visible ray;
Power supply changeover device (4): the direct supply provided by built-in power converts AC power to, frequency is 1kHz ~ 10kHz, and amplitude is 0V ~ 10V, dutycycle 1:1;
Built-in power (5): provide electric energy to all parts;
Controller (2): controller obtains corresponding driving data according to the temperature computing of real-time detection, thus to the centre wavelength drift that the change of environment temperature causes;
Duty display module (3): the display centre wavelength of color filter and the dump energy of built-in power,
Temperature sensor (6): the temperature of bandpass filter module is detected, and feeds back to controller;
Wavelength regulation button (9): the expection operation wavelength adjusting bandpass optical filter module.
2. the color filter that a kind of centre wavelength according to claim 1 is adjustable, it is characterized in that: described bandpass filter module comprises the encapsulating housing (15) with light inlet (12), light-emitting window (14), at the light inlet (12) of encapsulating housing (15), front window glass (17) is installed, at the light-emitting window (14) of encapsulating housing (15), rear hatch glass (18) is installed, the bandpass filter module (1) be positioned between front window glass (17) and rear hatch glass (18) is installed in encapsulating housing (15).
3. the color filter that a kind of centre wavelength according to claim 2 is adjustable, it is characterized in that: described bandpass filter module (1) comprises tunable optical filter (11), is fixed with broadband belt pass filter (10) in the both sides of tunable optical filter (11) respectively by optical veneering rete (13).
4. the color filter that a kind of centre wavelength according to claim 3 is adjustable, it is characterized in that: described tunable optical filter (11) is liquid crystal tunable filter, the visible light wave range that broadband belt pass filter (10) is plated to for multilayer dielectric film is at the bandpass filter of 400nm ~ 760nm, and in its passband, transmitance is more than 95%.
5. the color filter adjustable according to a kind of centre wavelength described arbitrarily in claim 2 to 4, it is characterized in that: front window glass (17) and rear hatch glass (18) adopt fused quartz material to make, its bore is Ф 70mm, thickness is 3mm, the anti-reflective film of visible light wave range is all coated with, the transmitance more than 98% of individual layer window glass at front window glass (17) and rear hatch glass (18).
6. the color filter adjustable according to a kind of centre wavelength described arbitrarily in claim 2 to 4, is characterized in that: be provided with adapter ring (16) at the light-emitting window (14) of described encapsulating housing (15).
7. the color filter that a kind of centre wavelength according to claim 1 is adjustable, is characterized in that, also comprises power switch (8), USB interface (7), and wherein power switch (8) controls the transmission of electricity state of built-in power (5); USB interface (7) communicates to connect for color filter and host computer, to amendment and the renewal of color filter plug-in and driving data.
8. a filtering process for the color filter that centre wavelength is adjustable, is characterized in that comprising the following steps:
A () temperature sensor gathers the shooting temperature of bandpass filter module (1), and flow to controller;
B () controller matches one according to the centre wavelength of the temperature received, current expection work needs to be loaded into the voltage magnitude in bandpass filter module (1), and this voltage is flowed to power supply changeover device (4);
C () power supply changeover device (4) provides power supply according to the voltage magnitude just received to bandpass filter module (1), thus the centre wavelength of adjustment bandpass filter module (1).
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| CN201510516548.6A CN105068359A (en) | 2015-08-21 | 2015-08-21 | Color filter with adjustable central wavelength and color filtering method |
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| CN201510516548.6A CN105068359A (en) | 2015-08-21 | 2015-08-21 | Color filter with adjustable central wavelength and color filtering method |
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| CN201510516548.6A Pending CN105068359A (en) | 2015-08-21 | 2015-08-21 | Color filter with adjustable central wavelength and color filtering method |
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| CN106989832A (en) * | 2017-03-23 | 2017-07-28 | 中国科学院国家天文台 | Measurement apparatus and correcting method for the different visual field wave length shifts of narrowband light filter |
| CN107682616A (en) * | 2017-11-15 | 2018-02-09 | 维沃移动通信有限公司 | Control method, shooting epicranial plate and mobile terminal |
| CN107835402A (en) * | 2017-11-08 | 2018-03-23 | 维沃移动通信有限公司 | A kind of image processing method, device and mobile terminal |
| CN111426640A (en) * | 2020-05-18 | 2020-07-17 | 中国工程物理研究院流体物理研究所 | Switchable continuous working spectrum camera and detection method |
| CN112068276A (en) * | 2020-08-24 | 2020-12-11 | 中国科学院长春光学精密机械与物理研究所 | High-precision wide-environment-adaptability optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106989832A (en) * | 2017-03-23 | 2017-07-28 | 中国科学院国家天文台 | Measurement apparatus and correcting method for the different visual field wave length shifts of narrowband light filter |
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| CN112068276A (en) * | 2020-08-24 | 2020-12-11 | 中国科学院长春光学精密机械与物理研究所 | High-precision wide-environment-adaptability optical lens |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |