CN109328458A - Imaging device and imaging method - Google Patents
Imaging device and imaging method Download PDFInfo
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- CN109328458A CN109328458A CN201780036118.1A CN201780036118A CN109328458A CN 109328458 A CN109328458 A CN 109328458A CN 201780036118 A CN201780036118 A CN 201780036118A CN 109328458 A CN109328458 A CN 109328458A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 51
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000011514 reflex Effects 0.000 claims description 5
- 241001025261 Neoraja caerulea Species 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
Abstract
The invention discloses a kind of imaging device and imaging methods.Imaging device includes: microlens array, all light of incident light to be brought on galvanometer；Galvanometer is rotated so that all light of incident light are reflected to optical splitter；Optical splitter, to be sent to RGB sensing unit after all light light splitting to incident light；RGB sensing unit, to export all light of incident light with digital signal.For the present invention using galvanometer and optical splitter instead of existing CCD or CMOS and colored filter, utmostly ensure that can accurately acquire each pixel true color information while the primary energy of incident light is not depleted, improve shooting image quality.
Description
Technical field
The present invention relates to technical field of imaging, more particularly to a kind of imaging device and imaging method.
Background technique
At present there are two types of the core image-forming blocks of digital camera: one is CCD (Charge-coupled Device), one
Kind is CMOS (Complementary Metal Oxide Semiconductor).Though the working principle of CCD and CMOS has very big
Difference, but have a something in common: it is all the conversion elements with photodiode as electro-optical signal.Each of which is photosensitive
The pixel of element respectively corresponds a picture point in imaging sensor can not since photosensitive element can only incude the intensity of light
Color information is captured, therefore colored CCD/cmos image sensor must cover colored filter above photosensitive element.In recent years
Come, CCD and CMOS have different degrees of development, such as stacking-type CMOS, it solves incidence on the basis of traditional cmos
Light leads to asking for incident laser energy loss after lenticule and colored filter, using reflection occurs when metal winding displacement layer
Topic.
However, incident light 2/3 meeting of original projectile energy when passing through colored filter be absorbed by colored filter, example
Such as: the R sensor of RGB sensor can receive the red light part of incident light, but the green light of incident light itself and
Blue ray part can be absorbed.Therefore, colour filter itself will also result in energy loss, substantially reduce photosensitive property.
Moreover, either in CCD or cmos sensor structure, the matrix form of colored filter and RGB sensing unit
Arrangement, so that per unit pixel can only record the data of three primary colors one of which color, other two kinds of colors can only be by obtaining
The color information of other pixels around a certain pixel is taken to carry out the reduction of environmental color in conjunction with the data of the pixel itself, most
For end form at a real pixel in digital photograph, such " guessing color " process causes the true resolution ratio of image to reduce, and influences
Shoot image quality.
Summary of the invention
Present invention generally provides a kind of imaging device and imaging methods, it is intended to solve conventional images sensor incident laser energy
The problem that loss is big, image resolution ratio is low.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
There is provided a kind of imaging device, comprising: microlens array, galvanometer, optical splitter and RGB sensing unit；
The microlens array, all light of incident light to be brought on the galvanometer；
The galvanometer is rotated so that all light of the incident light are reflected to the optical splitter；
The optical splitter, to be sent to the RGB sensing unit after all light light splitting to the incident light；
The RGB sensing unit, to export all light of the incident light with digital signal.
In order to solve the above technical problems, the another technical solution that the present invention uses is:
A kind of imaging method is provided, wherein the described method includes:
Incident light is set to be brought to galvanometer by microlens array；
Make the galvanometer rotation to receive all light of the incident light and reflex to optical splitter,
It, will be described by the optical splitter to RGB sensing unit is sent to after all light light splitting of the incident light
Incident light is exported with digital signal.
The beneficial effects of the present invention are: utilizing the existing CCD or CMOS of the combination replacement of galvanometer and optical splitter and colored filter
The combination of mating plate, utmostly ensure that can accurately acquire each pixel while the primary energy of incident light is not depleted
True color information improves shooting image quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of imaging device of the present invention；
Fig. 2 is the schematic diagram of the pivot center of galvanometer in imaging device of the present invention；
Fig. 3 is the schematic illustration that galvanometer is scanned lenticule in imaging device of the present invention；
Fig. 4 is the flow diagram of the image method of the invention.
Specific embodiment
Referring to Fig. 1, being the structural schematic diagram of imaging device of the present invention.As shown in Figure 1, the imaging device in the present embodiment
Including microlens array 2, galvanometer 3, optical splitter 4, the RGB sensing unit being made of several row lenticules 1 and several columns lenticule 1
5, laser 6, synchronous sensor 7.Wherein, several rows and several columns lenticule 1 are arranged in spherical surface or cylinder, to gather incident light
L。
All light of incident light L are brought to galvanometer 3 by microlens array 2, and galvanometer 3 is rotated to receive the institute of incident light L
There is light and reflex to optical splitter 4, light is sent to RGB sensing unit 5 after dispersion occurs when passing through optical splitter 4, is passed by RGB
Feel the color information that unit 5 acquires all light of incident light L, finally exports incident light L with digital signal form.Wherein, RGB
Sensing unit 5 includes R sensor 51, G sensor 52 and B sensor 53, and R sensor 51 is for receiving red light, G sensor
52 for receiving green light, and B sensor 53 is for receiving blue ray.
Imaging device of the present invention can also include infrared sensor 54 (hereinafter referred to as IR sensor), infrared for receiving
Line forms RGB-IR sensing unit 5A with RGB sensing unit 5.It is defeated by RGB sensing unit 5 or RGB-IR sensing unit 5A
Digital signal out forms final complete image after handling again via signal amplifier, digital analog converter etc., this part and existing
There is technology identical, details are not described herein.Optical splitter 4 can be prism or diffraction optical element.
Referring to Fig. 2, in imaging device of the present invention the pivot center of galvanometer schematic diagram.Galvanometer 3 is rotated to reflect incidence
When all light of light L, first direction rotation need to be carried out centered on vertical plane L1, and the angle α of first direction rotation is 60
To 70 degree；L2 carries out second direction rotation to galvanometer 3 along the horizontal plane, and the angle β of second direction rotation is 40 to 50 degree；Galvanometer 3
Rotation in the first direction and a second direction is alternately.
Imaging device of the present invention further includes laser 6 and synchronous sensor 7, and laser 6 emits beam to galvanometer 3, galvanometer 3
Light is reflected into synchronous sensor 7, to monitor the rotation of the rotation in a first direction of galvanometer 3 and second direction.
Imaging device of the present invention further includes main lens 8, and main lens 8 is arranged between object plane and microlens array 2, and micro-
Lens array 2 is located on the focal plane of main lens 8, and main lens 8 can be one group of lens, for tentatively gathering incident light.
Referring to Fig. 3, being the schematic illustration that galvanometer reflects lenticule in imaging device of the present invention.In Fig. 3,
All light of the spherical arrangement of microlens array 2, incident light L are brought to galvanometer 3 by microlens array 2, and galvanometer 3 is to lenticule
Each of array 2 lenticule is reflected one by one, i.e., point reflection when, incident light L pass through microlens array 2 after, it is each
A lenticule is gathered to form light beam, projects on a point on 3 surface of galvanometer, which includes multiple light.Because of lenticule
Array 2 is included several rows and several columns lenticule and is arranged with spherical surface, wherein several behavior m rows, it is several to be classified as n column, therefore can
To receive the light of different angle incidence, when galvanometer 3 receives the light of the first row first row lenticule A11 and is reflected to point
After light device 4, galvanometer 3 carries out first direction rotation centered on vertical plane L1, to receive the light of the first row secondary series lenticule A12
Line is simultaneously reflected to optical splitter 4, i.e., with the sequence of lenticule A11, A12, A13... reflection light one by one, until reflection first
The light of n-th of lenticule A1n of row, all reflection finishes the light of the first row lenticule, and galvanometer 3 returns to initial position.Later
L2 carries out second direction rotation to receive the light of the second row first row lenticule A21 and be reflected to galvanometer 3 along the horizontal plane
Optical splitter 4, galvanometer 3 carries out first direction rotation centered on vertical plane L1 to receive the second row secondary series lenticule A22 later
Light and reflex to optical splitter 4, i.e., with the sequence of lenticule A21, A22, A23 ... reflection light one by one, until reflection second
The light of n-th of lenticule A2n of row, all reflection finishes the light of the second row lenticule, and galvanometer 3 returns to the second row lenticule and opens
Begin the initial position before reflecting, and the rotation of L2 progress second direction continues to reflect it in the same way galvanometer 3 along the horizontal plane later
All light of remaining row lenticule, until all reflection finishes last line lenticule (i.e. m row lenticule) all light.When
It, can also be anti-with the sequence of the second row lenticule A2n to A21 after galvanometer 3 has reflected the light of the first row lenticule A11 to A1n
The light of the second row lenticule is penetrated, then with the light of order-reflected the third line lenticule of the third line lenticule A31 to A3n, such as
This is reciprocal until having reflected the light of all row lenticules.Specifically according to the actual situation by the driving circuit (not shown) of galvanometer 3
It is adjusted.In the present embodiment, m and n are natural number.Moreover, galvanometer 3 can also take different order-reflected light, such as
Using two diagonal lines of rectangle as first direction and second direction, the principle of reflection light is also identical as the present embodiment.
When microlens array 2 is arranged with spherical surface, the progress point reflection of galvanometer 3, only one light of reflection extremely divides galvanometer 3 every time
Light device 4, while optical splitter 4 is also only divided a light every time, therefore only needs that a RGB sensing unit is arranged in imaging device
5, that is, 1 B sensor 53 of G sensor 52,1 of R sensor 51,1 is set, it may also be necessary to including an IR sensor
54, when light is reflected into optical splitter 4 one by one by galvanometer 3, light is also divided to RGB sensing unit 5 by optical splitter 4 one by one simultaneously
R sensor 51, G sensor 52, B sensor 53, when having IR sensor 54 optical splitter 4 also simultaneously light is divided one by one to IR
Sensor 54, RGB sensing unit 5 or RGB-IR sensing unit 5A only believe the color of each light a time point
Breath is analyzed.
When microlens array 2 is arranged in cylinder, all light of incident light L are brought to galvanometer 3 by microlens array 2,
Galvanometer 3 can also be reflected through the light of each row or column lenticule 1 in microlens array 2 simultaneously, incident when reflecting at once
After light L passes through lenticule 1, gathered to form light beam by each row or column lenticule, it is into a line to project shape on galvanometer 3, each
Light beam includes a plurality of light, and galvanometer 3 receives the light of same row or column lenticule 1 simultaneously at this time, therefore galvanometer 3 is not needed to hang down
It faces directly and carries out first direction rotation centered on L1, and need to carry out second direction rotation centered on horizontal plane L2 only to receive not
The light of colleague's lenticule 1.As shown in figure 3, galvanometer 3 receives the light of the first row lenticule A11 to A1n and is reflected simultaneously
To optical splitter 4, galvanometer 3 carries out second direction rotation centered on horizontal plane L2 to receive the second row lenticule A21 simultaneously later
To A2n light and be reflected to optical splitter 4, later galvanometer 3 again centered on horizontal plane L2 carry out second direction rotation with
It receives the light of the third line lenticule A31 to A3n simultaneously and is reflected to optical splitter 4, so continue anti-in the same way
All light of remaining row lenticule are penetrated, until the light reflection of whole row lenticules is finished.It should be noted that galvanometer 3
It when with row reflection, can be focused on 3 surface of galvanometer with horizontal direction, vertical direction focuses or any direction focuses, reflection
Principle is identical as above-mentioned principle.
When microlens array 2 is arranged with cylinder, galvanometer 3 carries out capable reflection, the every secondary reflection a row or column light of galvanometer 3
To optical splitter 4, while optical splitter 4 is also divided a row or column light every time, therefore when galvanometer 3 is reflected with row, imaging dress
Need to be arranged one group of RGB sensing unit 5 in setting, to analyze and acquire simultaneously the color information of every a line light.One group of RGB sensing
Unit 5 includes several RGB sensing units 5, wherein the quantity of RGB sensing unit 5 is more than or equal to each in microlens array 2
The quantity of row lenticule.Each sensing unit 5 includes a B sensor 53 of G sensor 52, one of R sensor 51, one,
It can also include when necessary being passed with R sensor 51, G sensor 52, B (as when being applied to medical treatment, military affairs, space flight, field of traffic)
The identical IR sensor 54 of 53 quantity of sensor.When having IR sensor 54, light is divided to multiple RGB- by optical splitter 4 line by line simultaneously
IR sensing unit 5A, RGB-IR sensing unit 5A analyzes the color information of each row or column light simultaneously.
Referring to Fig. 4, being the flow diagram of the image method of the invention.Method includes the following steps:
Step S1: it is brought to all light of incident light L on galvanometer 3 by microlens array 2；
Step S2: make the rotation of galvanometer 3 to receive all light of incident light L and reflex to optical splitter 4；
Step S3: by optical splitter 4 to RGB sensing unit 5 is sent to after all light light splitting of incident light L, will enter
Light L is penetrated to export in digital form.
Galvanometer 3 carries out first direction rotation centered on vertical plane L1, and the angle of first direction rotation is 60 to 70 degree；
And/or galvanometer 3 carries out second direction rotation centered on horizontal plane L2, and the angle of second direction rotation is 40 to 50 degree.For
The accuracy for ensuring 3 reflection light of galvanometer, is arranged laser 6 and synchronous sensor 7 in imaging device, and laser 6 issues
Light is reflected into synchronous sensor 7 by light to galvanometer 3, galvanometer 3, and synchronous sensor 7 verifies laser 6 and galvanometer 3 reflects
Light consistency, with monitor galvanometer 3 it is in the horizontal direction rotation and vertical direction rotation.
It should be noted that when microlens array 2 is arranged with being different from the curved form of spherical surface or cylinder, galvanometer 3
Accordingly can in microlens array 2 multiple lenticules or multirow lenticule reflect, in this case it is necessary to
Corresponding adjustment RGB sensing unit 5 or the corresponding setting number of RGB-IR sensing unit 5A.When galvanometer 3 is to microlens array 2
In multiple lenticules when being reflected, after incident light L passes through microlens array 2, gathered to form light beam by each lenticule,
When projecting on multiple points on 3 surface of galvanometer, galvanometer 3 is to the reflection mode of each point and above-mentioned galvanometer 3 in microlens array 2
The mode that is reflected one by one of each lenticule it is identical, multiple points are reflected according to certain sequence of positions, are needed simultaneously
Be arranged multiple RGB sensing units 5 or the RGB-IR sensing unit 5A of respective numbers with and meanwhile acquisition and analysis reflection light
Color information.When galvanometer 3 reflects the multirow lenticule in microlens array 2, incident light L passes through microlens array 2
Afterwards, gathered to form light beam by each lenticule, when projecting on a plurality of line on 3 surface of galvanometer, reflection of the galvanometer 3 to every line
Mode is identical as the mode that above-mentioned galvanometer 3 reflects every a line lenticule in microlens array 2 simultaneously, a plurality of line according to
Certain sequence of positions is reflected；Need to be arranged the multiple groups RGB sensing unit 5 or RGB-IR sensing unit of respective numbers simultaneously
5A to analyze the color information of reflection light simultaneously.Galvanometer 3 is to the reflection mode and above-mentioned galvanometer 3 of every line to microlens array
Every a line lenticule in 2 carries out while the mode of reflection is identical, and the reflection of remaining line is carried out according to certain logical order.
When needing IR sensor 54, IR sensor 54 identical with R sensor 51, G sensor 52, the quantity of B sensor 53 is set, with
RGB sensor 5 forms RGB-IR sensor 5A.
It should also be noted that, microlens array 2 could alternatively be other lens arrays with curved surface spotlight effect, with
It can achieve the effect that microlens array is gathered subject to light.
The present invention utilizes the colored filter in the combination replacement of galvanometer and optical splitter existing CCD or CMOS, maximum journey
Degree, which ensure that, can accurately acquire each pixel true color information while the primary energy of incident light is not depleted, mention
Shooting image quality is risen.
The above is only embodiments of the present invention, are not intended to limit the scope of the invention, all to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (20)
1. a kind of imaging device characterized by comprising microlens array, galvanometer, optical splitter and RGB sensing unit；
The microlens array, all light of incident light to be brought on the galvanometer；
The galvanometer is rotated so that all light of the incident light are reflected to the optical splitter；
The optical splitter, to be sent to the RGB sensing unit after all light light splitting to the incident light；
The RGB sensing unit, to export all light of the incident light with digital signal.
2. imaging device as described in claim 1, which is characterized in that the microlens array includes that several rows and several columns are micro-
Lens, several lenticules are arranged with spherical surface or cylinder, all light of the incident light are brought on the galvanometer.
3. imaging device as claimed in claim 2, which is characterized in that the quantity of the RGB sensing unit is one, by institute
All light for stating incident light are exported one by one with digital signal.
4. imaging device as claimed in claim 2, which is characterized in that the quantity of the RGB sensing unit is more than or equal to each
The quantity of the lenticule of row or column exports all light of the incident light line by line or by column with digital signal.
5. imaging device as described in claim 1, which is characterized in that the RGB sensing unit includes R sensor, G sensor
And B sensor, the R sensor is for receiving red light, and the G sensor is for receiving green light, the B sensor
For receiving blue ray.
6. imaging device as described in claim 1, which is characterized in that imaging device further includes infrared sensor, for receiving
Infrared ray.
7. imaging device as described in claim 1, which is characterized in that the galvanometer carries out first direction centered on vertical plane
Rotation, and the angle of first direction rotation is 60 to 70 degree；And/or the galvanometer carries out second direction rotation along the horizontal plane, and
The angle of second direction rotation is 40 to 50 degree, to receive and reflect all light of the incident light.
8. imaging device as described in claim 1, which is characterized in that the imaging device further includes laser and synchronous sensing
Device, the laser emit beam to the galvanometer, and the light is reflected into the synchronous sensor by the galvanometer, with prison
Control galvanometer rotation in a first direction and the rotation of second direction.
9. imaging device as described in claim 1, which is characterized in that the optical splitter is prism or diffraction optical element.
10. imaging device as described in claim 1, which is characterized in that the imaging device further includes main lens, and the master is saturating
Mirror is arranged between object plane and the microlens array, and the microlens array is located on the focal plane of the main lens.
11. a kind of imaging method, which is characterized in that the described method includes:
Incident light is set to be brought to galvanometer by microlens array；
Make the galvanometer rotation to receive all light of the incident light and reflex to optical splitter,
By the optical splitter to RGB sensing unit is sent to after all light light splitting of the incident light, by the incidence
Light is exported with digital signal.
12. imaging method as claimed in claim 11, which is characterized in that the microlens array includes several rows and several columns
Lenticule, several lenticules are arranged with spherical surface or cylinder, and the incident light is all brought to the galvanometer.
13. imaging method as claimed in claim 12, which is characterized in that the microlens array is arranged with spherical surface, and by institute
It states galvanometer and when the optical splitter reflects one by one and is divided all light of the incident light, the RGB sensing of setting one is single
Member exports all light of the incident light one by one with digital signal.
14. imaging method as claimed in claim 12, which is characterized in that the microlens array is arranged with cylinder, and by institute
State galvanometer and when the spectroscope reflects line by line or by column and is divided all light of the incident light, RGB described in one group of setting
Sensing unit exports all light of the incident light line by line or by column with digital signal；The number of the RGB sensing unit
Amount is more than or equal to the quantity of each row or column lenticule.
15. imaging method as claimed in claim 11, which is characterized in that the RGB sensing unit includes R sensor, G sensing
Device and B sensor, the R sensor is for receiving red light, and the G sensor is for receiving green light, the B sensing
Device is for receiving blue ray.
16. imaging method as claimed in claim 11, which is characterized in that setting infrared sensor, with receiving infrared-ray.
17. imaging method as claimed in claim 11, which is characterized in that the galvanometer carries out first party centered on vertical plane
Angle to rotation, and first direction rotation is 60 to 70 degree；And/or the galvanometer carries out second direction rotation along the horizontal plane,
And the angle of second direction rotation is 40 to 50 degree, to receive and reflect all light of the incident light.
18. imaging method as claimed in claim 11, which is characterized in that setting laser and synchronous sensor make described sharp
Light device emits beam to the galvanometer, is reflected into the galvanometer in the synchronous sensor light, described in monitoring
Galvanometer rotation in a first direction and the rotation of second direction.
19. imaging method as claimed in claim 11, which is characterized in that the optical splitter is prism or diffraction optics member
Part.
20. imaging method as claimed in claim 11, which is characterized in that setting main lens is located at object plane and described micro-
Between lens array, and the microlens array is located on the focal plane of the main lens.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/119519 WO2019127251A1 (en) | 2017-12-28 | 2017-12-28 | Imaging device and imaging method |
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| Publication Number | Publication Date |
|---|---|
| CN109328458A true CN109328458A (en) | 2019-02-12 |
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| CN201780036118.1A Pending CN109328458A (en) | 2017-12-28 | 2017-12-28 | Imaging device and imaging method |
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| WO (1) | WO2019127251A1 (en) |
Cited By (1)
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|---|---|---|---|---|
| CN117233874A (en) * | 2023-11-16 | 2023-12-15 | 西安信飞特信息科技有限公司 | Image acquisition device and image acquisition equipment |
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| JP2001194599A (en) * | 2000-01-12 | 2001-07-19 | Sony Corp | Optical wavelength multiplex modem |
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| CN117233874A (en) * | 2023-11-16 | 2023-12-15 | 西安信飞特信息科技有限公司 | Image acquisition device and image acquisition equipment |
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| WO2019127251A1 (en) | 2019-07-04 |
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