CN108732671A - Optical spectrum encoded colorful optical filter array - Google Patents
Optical spectrum encoded colorful optical filter array Download PDFInfo
- Publication number
- CN108732671A CN108732671A CN201810534628.8A CN201810534628A CN108732671A CN 108732671 A CN108732671 A CN 108732671A CN 201810534628 A CN201810534628 A CN 201810534628A CN 108732671 A CN108732671 A CN 108732671A
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- Prior art keywords
- filter
- wave bands
- row
- optical
- arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
Abstract
The invention discloses a kind of optical spectrum encoded colorful optical filter arrays, including：Each filter unit is to be pre-designed through filter in filter arrays, can penetrate the light of multiple wave bands, the transmitance of different filter units is interrelated；Assuming that for the light of 3 wave bands, i.e. three wave bands of RGB, this 3 wave bands are denoted as 1,2,3 successively；According to mosaic arrangement mode, and filter arrays are 4 × 5 forms, then the transmission filter section of 5 filter units of the first row is followed successively by 2+3,1+2,2+3,1+2,2+3；The transmission filter section of second filter unit of row 5 is followed successively by 1+2,1+3,1+2,1+3,1+2；The third line is identical as the first row, and fourth line is identical as the second row.The filter arrays can utilize the combined energy of multiple wave bands simultaneously so that camera still ensures that relatively high signal-to-noise ratio when obtaining coloured image under short exposure time or faint light condition.
Description
Technical field
The present invention relates to filter technology field more particularly to a kind of optical spectrum encoded colorful optical filter arrays.
Background technology
Colour imaging is needed after being filtered to light using tri- kinds of optical filters of RGB, records three kinds of face respectively with detector
The light of color, finally by digital synthetic color image.Usually on the detector couple Baeyer optical filter, make each pixel with
One point that filters corresponds, and each optical filtering point can only be by a kind of color among RGB, and a set pattern is pressed in three kinds of optical filterings
Rule arrangement；Baeyer optical filter is as shown in Figure 1.
But the transmitance that Baeyer optical filter uses is monochromatic filter, luminous flux is low, light is weak or the time for exposure
In the case of short, the signal noise ratio (snr) of image that color camera obtains is low.
Further, since corresponding pixel can only record a kind of light energy of color, so the unwritten color of the pixel
It can only be guessed according to surrounding pixel values, complete coloured image is obtained by post-processing.
Invention content
The object of the present invention is to provide a kind of optical spectrum encoded colorful optical filter arrays, can utilize multiple wave bands simultaneously, from
And improve the capacity usage ratio of imaging system.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of optical spectrum encoded colorful optical filter array, including：
Each filter unit is to be pre-designed through filter in filter arrays, can penetrate the light of multiple wave bands
The transmitance of line, different filter units is interrelated；
Assuming that for the light of 3 wave bands, i.e. three wave bands of RGB, this 3 wave bands are denoted as 1,2,3 successively；
According to mosaic arrangement mode, and filter arrays are 4 × 5 forms, then 5 filter units of the first row
It is followed successively by 2+3,1+2,2+3,1+2,2+3 through filter section；The transmission filter section of second filter unit of row 5 be followed successively by 1+2,
1+3,1+2,1+3,1+2；The third line is identical as the first row, and fourth line is identical as the second row.
As seen from the above technical solution provided by the invention, the combined energy that can utilize multiple wave bands simultaneously, makes
It obtains when camera obtains coloured image under short exposure time or faint light condition and still ensures that relatively high signal-to-noise ratio.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the schematic diagram for the Baeyer optical filter that background of invention provides；
Fig. 2 is a kind of schematic diagram of optical spectrum encoded colorful optical filter array provided in an embodiment of the present invention；
Fig. 3 is the imaging optical path schematic diagram provided in an embodiment of the present invention based on optical spectrum encoded colorful optical filter array.
Specific implementation mode
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention provides a kind of optical spectrum encoded colorful optical filter array, improves what conventional color detector used
The transmitance of Baeyer optical filter obtains colour information by decoded mode.
In the embodiment of the present invention, each filter unit is to be pre-designed through filter in filter arrays, Neng Goutou
The light of multiple wave bands is crossed, the transmitance of different filter units is interrelated.
Assuming that for the light of 3 wave bands, i.e. three wave bands of RGB, this 3 wave bands are denoted as 1,2,3 successively；
As shown in Fig. 2, according to mosaic arrangement mode, and filter arrays are 4 × 5 forms, then 5 filters of the first row
The transmission filter section of filter unit is followed successively by 2+3,1+2,2+3,1+2,2+3；The transmission filter section of second filter unit of row 5
It is followed successively by 1+2,1+3,1+2,1+3,1+2；The third line is identical as the first row, and fourth line is identical as the second row.
Digital representation single band serial number in Fig. 2, summation indicate that optical filter can penetrate the light of these wave bands.Use this
Luminous flux can be increased by 2 times to 3 times by scheme.Certainly, the transmission filter section of each filter unit is only in form shown in Fig. 2
Citing can also be changed to other and penetrate filter section according to demand；In addition, filter set can also use the form of optical filter wheel,
Image under acquisition time difference optical filter.
Can optical spectrum encoded colorful optical filter array directly be replaced into Baeyer optical filter, each optical filter in filter arrays
Unit is identical as single pixel size, coordinates imaging len and detector, and the data of record are carried out interpolation fitting, can be obtained
Filter the image after these three wave bands.As shown in figure 3, being dependent imaging light path schematic diagram.In Fig. 3,1- imaging lens, 2- filters
Chip arrays, 3- detectors.
Optical spectrum encoded colorful optical filter array provided in an embodiment of the present invention can utilize the combination energy of multiple wave bands simultaneously
Amount so that camera still ensures that relatively high signal-to-noise ratio when obtaining coloured image under short exposure time or faint light condition.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (2)
1. a kind of optical spectrum encoded colorful optical filter array, which is characterized in that including：
Each filter unit is to be pre-designed through filter in filter arrays, can penetrate the light of multiple wave bands, no
Transmitance with filter unit is interrelated；
Assuming that for the light of 3 wave bands, i.e. three wave bands of RGB, this 3 wave bands are denoted as 1,2,3 successively；
According to mosaic arrangement mode, and filter arrays are 4 × 5 forms, then the transmission of 5 filter units of the first row
Filter section is followed successively by 2+3,1+2,2+3,1+2,2+3；The transmission filter section of second filter unit of row 5 be followed successively by 1+2,1+3,
1+2,1+3,1+2；The third line is identical as the first row, and fourth line is identical as the second row.
2. optical spectrum encoded colorful optical filter array according to claim 1, which is characterized in that each filter in filter arrays
Filter unit is identical as single pixel size, coordinates imaging len and detector, and the data of record are carried out interpolation fitting, can
Obtain the image after filtering these three wave bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810534628.8A CN108732671A (en) | 2018-08-21 | 2018-08-21 | Optical spectrum encoded colorful optical filter array |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810534628.8A CN108732671A (en) | 2018-08-21 | 2018-08-21 | Optical spectrum encoded colorful optical filter array |
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| CN108732671A true CN108732671A (en) | 2018-11-02 |
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| CN201810534628.8A Pending CN108732671A (en) | 2018-08-21 | 2018-08-21 | Optical spectrum encoded colorful optical filter array |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123050A (en) * | 2007-09-26 | 2008-02-13 | 友达光电股份有限公司 | Multiple primitive color display device and colorful filtering slice |
| CN101881849A (en) * | 2009-05-07 | 2010-11-10 | 深圳富泰宏精密工业有限公司 | Color filter |
| CN202285072U (en) * | 2011-11-08 | 2012-06-27 | 京东方科技集团股份有限公司 | Color filter substrate, array substrate, liquid crystal display panel and display device |
| CN103529586A (en) * | 2012-07-16 | 2014-01-22 | Tcl集团股份有限公司 | Colorful color filtering film, colorful color filtering film display unit and array structure of colorful color filtering film |
-
2018
- 2018-08-21 CN CN201810534628.8A patent/CN108732671A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123050A (en) * | 2007-09-26 | 2008-02-13 | 友达光电股份有限公司 | Multiple primitive color display device and colorful filtering slice |
| CN101881849A (en) * | 2009-05-07 | 2010-11-10 | 深圳富泰宏精密工业有限公司 | Color filter |
| CN202285072U (en) * | 2011-11-08 | 2012-06-27 | 京东方科技集团股份有限公司 | Color filter substrate, array substrate, liquid crystal display panel and display device |
| CN103529586A (en) * | 2012-07-16 | 2014-01-22 | Tcl集团股份有限公司 | Colorful color filtering film, colorful color filtering film display unit and array structure of colorful color filtering film |
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Application publication date: 20181102 |