CN101661265A - Multi-channel holographic recording method for digital information stereo display - Google Patents
Multi-channel holographic recording method for digital information stereo display Download PDFInfo
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- CN101661265A CN101661265A CN200910307915A CN200910307915A CN101661265A CN 101661265 A CN101661265 A CN 101661265A CN 200910307915 A CN200910307915 A CN 200910307915A CN 200910307915 A CN200910307915 A CN 200910307915A CN 101661265 A CN101661265 A CN 101661265A
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Abstract
A multi-channel holographic recording method for digital information stereo display belongs to the image processing field, which aims at solving the problem of long recording time existing in the existing holographic single channel recording method. The recording method comprises the following steps: 1. converting a three-dimensional image into a two-dimensional image array with different visual angles; 2. parting off and processing the two-dimensional image into sub-images according to an optical passage pattern; 3. operating and processing the sub-images so as to obtain a passage composite image which is displayed on a liquid crystal space light modulator (SLM), controlling a holofilm to move, each optical channel displaying a sub-composite image and recording one point on the holofilm every time moving; the process for recording one point is as follows: a laser outputs laser lights and simultaneously controls e electric shutters to operate, the optical channel simultaneously records, and the formed object beam is projected into one side of the holofilm; and the other laser lights are projected into the back surface of the holofilm and recorded point by point; channel holographsrecorded on the holofilm by a plurality of optical channels are spliced together to form the whole holographs.
Description
Technical field
The present invention relates to a kind of multi-channel holographic recording method of numerical information stereo display, belong to image processing field.
Background technology
Development along with infotech, utilization computer technology and digitized video technology have been obtained a large amount of three-dimensional datas in scientific research and production practices, there is a lot of three-dimensional datas to need stereo display, as aspects such as relief map, commercial advertisement and artwork exhibition in displaying, military affairs and the geologic prospecting of industrial goods and engineering design.The displaying of industrial goods and engineering design at present normally will be made physical model, also can utilize the display packing of the multiple stereo-picture in the virtual reality technology, as wear polarised light glasses etc.Make physical model, Production Time is long, expense is higher, if utilize virtual reality technology to show, then all is to be limited in the expensive virtual reality system to use.And hologram image provides sense of reality 3-D view technique for displaying with its similarity of reproducing light wave and true light wave.Therefore need the record and the methods of exhibiting of simple and efficient 3D hologram image.Chinese patent in first to file: three-dimensional digital information is recorded in device and recording method thereof on the holofilm; Publication number is CN101101479A; The open date is on January 9th, 2008, and this patent has been put down in writing the two dimensional image series that 3-D view is converted to different visual angles, and shows on digital micro-mirror, the technical scheme of imaging on holofilm.Realized stereo display, and horizontal and vertical image information is not lost, the image size is unrestricted, the visual angle is big, picture quality is good, its device has advantage simple in structure, cheap for manufacturing cost.Can not make physical model or not in virtual reality system, just can write down demonstration 3D hologram image.In the visual stereo display of science computational data, can accelerate processing speed of data greatly, the mass data of generation is utilized effectively, observe phenomenon implicit in the data, provide strong instrument for finding and understanding scientific law.But this patent records hologram is the single channel recording method, and writing down a width of cloth hologram often needs two to five days time, the problem that life period is long.
Summary of the invention
The objective of the invention is to solve the problem of existing hologram single channel recording method long recording time, a kind of multi-channel holographic recording method of numerical information stereo display is provided.
The device that the inventive method is used comprises the D/A-A/D data collecting card, computing machine, video distributor, two-dimension displacement assembly apparatus and e hologram image made the optical module unit, each hologram image is made the optical module unit and is had f optical channel, a described f optical channel is uniform along rectilinear direction, e hologram image made parallel equidistant setting between the optical module unit, e hologram image made the optical channel composition e * f optical channel array of optical module unit, described optical channel array is corresponding with a LCD space light modulator SLM
Realization the inventive method may further comprise the steps:
Subimage array [the Z that forms
11, Z
12..., Z
1fZ
21, Z
22..., Z
2f Z
E1, Z
E2..., Z
Ef], each subimage has M * N pixel, and the array that the pixel that each subimage has forms is [D
11, D
12..., D
1ND
21, D
22..., D
2N D
M1, D
M2..., D
MN], wherein, e, f, M and N are positive integer;
Each passage composograph P
IjBy M * N sub-composograph p
XyForm,
Computing machine is done two-dimentional moving in the egative film plane by D/A-A/D data collecting card, two-dimension displacement assembly apparatus control holofilm, holofilm whenever moves once, and each optical channel shows a width of cloth composograph p by video distributor on LCD space light modulator SLM
Xy, the output record of described optical channel forms a pixel on holofilm, and the two dimension by holofilm moves, and makes all pixels in the corresponding display unit on the output traversal holofilm of each optical channel,
The forming process of the pixel of the capable y row of x is in each display unit on the holofilm:
The electronic shutter that computing machine is made the optical module unit by e hologram image of D/A-A/D data acquisition card control is worked simultaneously, hologram image is made the laser of the laser instrument output of optical module unit and is exported by electronic shutter, after the beam splitting transmitted light after the unit beam splitter beam splitting passes through the transmission of f-1 thing light beam splitter successively, reflect to form the incident light of f optical channel by the first total reflective mirror M1, the beam splitting transmitted light of described unit beam splitter forms first incident light to f-1 optical channel through f-1 thing light beam splitter reflection back successively, f optical channel incident light light intensity is identical
The emergent light of each optical channel forms object beam and converges on the holofilm; The beam splitting reflected light of described unit beam splitter is reflected by the second total reflective mirror M2, after passing through the transmission of f-1 reference light beam splitter more successively, reflect to form the reference light of f optical channel by the 3rd total reflective mirror M3, the described second total reflective mirror M2 reflected light forms first reference light to f-1 optical channel through f-1 reference light beam splitter reflection back successively, the light intensity of f reference light is identical, the object beam of each optical channel overlaps on holofilm with its corresponding reference light, wherein, 1 〉=i 〉=e, 1 〉=j 〉=f, 1 〉=x 〉=M, 1 〉=y 〉=N
Each optical channel writes down on holofilm simultaneously according to the method described above and forms e * f passage hologram, and described e * f passage hologram amalgamation forms whole hologram.
Advantage of the present invention: LCD space light modulator of usefulness that the present invention proposes, a two-dimension displacement assembly writes down the multiple recording method of a width of cloth hologram image, than fast several times of single channel recording method speed.
Description of drawings
Fig. 1 is the structural representation of the inventive method institute operative installations, Fig. 2 is the vertical view of Fig. 1, Fig. 3 obtains two dimensional image array synoptic diagram, Fig. 4 is that each two dimensional image is divided into subimage array synoptic diagram, Fig. 5 is each sub-image pixels array of figure, Fig. 6 is the array synoptic diagram of passage composograph, and Fig. 7 is the structural representation of specific embodiment, and Fig. 8 is that the two dimensional image of the described specific embodiment of Fig. 7 is divided into subimage array synoptic diagram.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 8, the device that the present embodiment method is used comprises D/A-A/D data collecting card 1, computing machine 2, video distributor 3, two-dimension displacement assembly apparatus 4 and e hologram image made optical module unit 5, each hologram image is made optical module unit 5 and is had f optical channel, a described f optical channel is uniform along rectilinear direction, e hologram image made parallel equidistant setting between the optical module unit 5, e hologram image made the optical channel composition e * f optical channel array of optical module unit 5, described optical channel array is corresponding with a LCD space light modulator SLM
Realization the inventive method may further comprise the steps:
Subimage array [the Z that forms
11, Z
12..., Z
1fZ
21, Z
22..., Z
2f Z
E1, Z
E2..., Z
Ef], each subimage has M * N pixel, and the array that the pixel that each subimage has forms is [D
11, D
12..., D
1ND
21, D
22..., D
2N D
M1, D
M2..., D
MN], wherein, e, f, M and N are positive integer;
Each passage composograph P
IjBy M * N sub-composograph p
XyForm,
The forming process of the pixel of the capable y row of x is in each display unit on the holofilm 8:
The electronic shutter 7 that computing machine 2 is made optical module unit 5 by e hologram image of D/A-A/D data collecting card 1 control is worked simultaneously, hologram image is made the laser of laser instrument 6 outputs of optical module unit 5 and is exported by electronic shutter 7, after the beam splitting transmitted light after the unit beam splitter beam splitting passes through the transmission of f-1 thing light beam splitter successively, reflect to form the incident light of f optical channel by the first total reflective mirror M1, the beam splitting transmitted light of described unit beam splitter forms first incident light to f-1 optical channel through f-1 thing light beam splitter reflection back successively, f optical channel incident light light intensity is identical
The emergent light of each optical channel forms object beam and converges on the holofilm 8; The beam splitting reflected light of described unit beam splitter is reflected by the second total reflective mirror M2, after passing through the transmission of f-1 reference light beam splitter more successively, reflect to form the reference light of f optical channel by the 3rd total reflective mirror M3, the described second total reflective mirror M2 reflected light forms first reference light to f-1 optical channel through f-1 reference light beam splitter reflection back successively, the light intensity of f reference light is identical, the object beam of each optical channel overlaps on holofilm 8 with its corresponding reference light, wherein, 1 〉=i 〉=e, 1 〉=j 〉=f, 1 〉=x 〉=M, 1 〉=y 〉=N.
Each optical channel writes down on holofilm 8 simultaneously according to the method described above and forms e * f passage hologram, and described e * f passage hologram amalgamation forms whole hologram.
Described object beam of present embodiment and reference light be in the both sides of holofilm 8, record be reflection hologram.Holofilm 8 can be realized three-dimensional imaging with white-light illuminating after all record is finished.
Because the present invention has adopted a large amount of relevant two dimensional image V of object different visual angles
Rs, last integral hologram, so can show the image of each different visual angles of object comprehensively, realistically, stereoscopic sensation is strong, apparent mass is very good.1 〉=r 〉=a wherein, 1 〉=s 〉=b.
The subimage array that step 2 forms as shown in Figure 4, it all is to carry out according to the optical channel array of setting that each two dimensional image is cut apart subimage, i.e. [Z
11, Z
12..., Z
1fZ
21, Z
22..., Z
2f Z
E1, Z
E2..., Z
Ef], each subimage all has M * N pixel, as shown in Figure 5.
E * f optical channel is record simultaneously, after finishing, pieces together forming whole hologram together, and the method for each optical channel record is identical, and LCD space light modulator SLM distributes by described e * f optical channel array general layout configuration and synthesizes e * f passage composograph P
Ij, forming the composograph array is [P
11, P
12..., P
1fP
21, P
22..., P
2f P
E1, P
E2..., P
Ef].
Each passage composograph P
IjFrom in all two dimensional images with the corresponding subimage Z of its coordinate
Ij, i.e. the passage composograph P of first optical channel
11Take from the subimage Z of all two dimensional images
11, amount to a * b Z
11, the passage composograph P of second optical channel
12Take from the subimage Z of all two dimensional images
12, amount to a * b Z
12, the rest may be inferred, the passage composograph P of last optical channel
EfTake from the subimage Z of all two dimensional images
Ef, amount to a * b Z
Ef
Each subimage Z
IjHave M * N pixel, each subimage Z
IjThe array that the pixel that has forms is [D
11, D
12..., D
1ND
21, D
22..., D
2N D
M1, D
M2..., D
MN].When writing down on holofilm 8, the pointwise record during point of every record, extracts a * b number of sub images Z
IjIn pixel of each subimage form passage composograph P
Ij, the passage composograph P of each optical channel
IjArrange for:
P
ij＝{V
11[Z
ij(D
xy)]，V
12[Z
ij(D
xy)]，V
13[Z
ij(D
xy)]，…，V
1b[Z
ij(D
xy)]；
V
21[Z
ij(D
xy)]，V
22[Z
ij(D
xy)]，V
23[Z
ij(D
xy)]，…，V
2b[Z
ij(D
xy)]；
…；
V
a1[Z
ij(D
xy)]，V
a2[Z
ij(D
xy)]，V
a3[Z
ij(D
xy)]，…，V
ab[Z
ij(D
xy)]}。
Be specifically described referring to Fig. 6, work as i=1, during j=1, i.e. the passage composograph P of first optical channel
11:
P
11＝{V
11[Z
11(D
xy)]，V
12[Z
11(D
xy)]，V
13[Z
11(D
xy)]，…，V
1b[Z
11(D
xy)]；
V
21[Z
11(D
xy)]，V
22[Z
11(D
xy)]，V
23[Z
11(D
xy)]，…，V
2b[Z
11(D
xy)]；
…；
V
a1[Z
11(D
xy)]，V
a2[Z
11(D
xy)]，V
a3[Z
11(D
xy)]，…，V
ab[Z
11(D
xy)]}。
Each passage composograph P
IjIn pixel take from all two dimensional images and the corresponding subimage Z of its coordinate
Ij, each passage composograph P
IjIn V
Rs[Z
Ij(D
Xy)] pixel obtain by following method:
At two dimensional image V
RsIn subimage Z
IjIn from left to right, pixel D from top to bottom
Xy, by from right to left, Cahn-Ingold-Prelog sequence rule from top to bottom throws successively and obtain described passage composograph P
IjIn a pixel V
Rs[Z
Ij(D
Xy)], 1 〉=r 〉=a wherein, 1 〉=s 〉=b.
With reference to above-mentioned rule, the passage composograph P of first optical channel
11In M * N sub-composograph p is arranged
Xy, whenever record a bit shows a width of cloth composograph p on holofilm 8
Xy, so first optical channel writes down M * N point on holofilm 8.
First record first point, i.e. x=M, y=N, all a * b subimage Z
11In pixel D
MNAll be called to extract and arrange, processedly synthesize sub-composograph p
MN, be expressed as follows:
p
MN＝{V
11[Z
11(D
MN)]，V
12[Z
11(D
MN)]，V
13[Z
11(D
MN)]，…，V
1b[Z
11(D
MN)]；
V
21[Z
11(D
MN)]，V
22[Z
11(D
MN)]，V
23[Z
11(D
MN)]，…，V
2b[Z
11(D
MN)]；
…；
V
a1[Z
11(D
MN)]，V
a2[Z
11(D
MN)]，V
a3[Z
11(D
MN)]，…，V
ab[Z
11(D
MN)]}
This point is recorded on the holofilm 8, and then, two-dimension displacement assembly apparatus 4 control holofilms 8 are done two-dimentional moving in the egative film plane, by noting a bit as upper type, the pointwise record is until last point, i.e. x=1, y=1, record last point, the D of all a * b subimage
11All be called to extract and arrange, sub-composograph p
11Be expressed as follows:
p
11＝{V
11[Z
11(D
11)]，V
12[Z
11(D
11)]，V
13[Z
11(D
11)]，…，V
1b[Z
11(D
11)]；
V
21[Z
11(D
11)]，V
22[Z
11(D
11)]，V
23[Z
11(D
11)]，…，V
2b[Z
11(D
11)]；
V
a1[Z
11(D
11)]，V
a2[Z
11(D
11)]，V
a3[Z
11(D
11)]，…，V
ab[Z
11(D
11)]}，
First optical channel writes down M * N point altogether, forms first passage hologram.
As above, the passage hologram record of first optical channel is finished, and the recording mode of the passage hologram of other optical channel is identical with it, and carries out simultaneously, as last optical channel upper channel composograph P
EfTake from the subimage Z of all two dimensional images
Ef, the passage hologram amalgamation of e * f optical channel record forms whole hologram.
With a specific embodiment method of the present invention is described below,, gets e=1 referring to Fig. 7, f=4, i.e. four optical channels arranged side by side, presenting four passage composographs at LCD space light modulator SLM is P
11, P
12, P
13And P
14
3-D view is divided into the two dimensional image array of a * b different visual angles as previously mentioned, and each two dimensional image is divided into four partial subgraph pictures by the general layout of optical channel, and four number of sub images are respectively Z
11, Z
12, Z
13And Z
14, as shown in Figure 8, subimage Z in each two dimensional image
11Be used to constitute passage composograph P
11, each subimage all has M * N pixel, and the array that the pixel that each subimage has forms is [D
11, D
12..., D
1ND
21, D
22..., D
2N D
M1, D
M2..., D
MN].
Introduce first optical channel of record earlier, two-dimension displacement assembly apparatus 4 whenever moves once, and first optical channel shows a width of cloth composograph p by video distributor 3 on LCD space light modulator SLM
Xy, amount to M * N sub-composograph p
XyOn display unit corresponding on the holofilm 8, write down M * N pixel with first optical channel, two dimension by holofilm 8 moves, the pointwise record, make all pixels in the corresponding display unit on the output traversal holofilm 8 of first optical channel, recording method as previously mentioned.Finish the record of the hologram of first optical channel, the recording mode of other three optical channels is identical, and carries out simultaneously, the passage composograph P of second optical channel
12Call the subimage Z of all two dimensional images
12, the passage composograph P of the 3rd optical channel
13Call the subimage Z of all two dimensional images
13, the passage composograph P of the 4th optical channel
14Call the subimage Z of all two dimensional images
14, the synthetic complete hologram of the passage hologram image of four optical channel records.
The process that the emergent light of described each optical channel of step 3 forms object beam is:
Each optical channel incident light expands bundle through beam expanding lens and forms expansion Shu Guang, described expansion Shu Guangjing first convex lens form directional light and incide on the LCD space light modulator SLM, LCD space light modulator SLM is transmitted to second convex lens with described directional light, and converges on the holofilm 8 through described second convex lens formation object beam.
Specific operation process is: the electronic shutter 7 that computing machine 2 is made optical module unit 5 by four hologram images of D/A-A/D data collecting card 1 control is worked simultaneously, hologram image is made the laser of laser instrument 6 outputs of optical module unit 5 and is exported by electronic shutter 7, and the beam splitting transmitted light after unit beam splitter P0 beam splitting is successively through the first thing light beam splitter P1
1, the second thing light beam splitter P1
2, the 3rd thing light beam splitter P1
3After the transmission, reflect to form the incident light of the 4th optical channel by the first total reflective mirror M1, the beam splitting transmitted light of described unit beam splitter P0 is successively through the first thing light beam splitter P1
1, the second thing light beam splitter P1
2, the 3rd thing light beam splitter P1
3The reflection back forms the incident light of first to fourth optical channel, and four optical channel incident light light intensity are identical, and the incident light of first optical channel is through the first beam expanding lens LK
1Expand bundle and form expansion Shu Guang, the described expansion Shu Guangjing first optical channel first convex lens L1
1Form directional light and incide on the LCD space light modulator SLM, LCD space light modulator SLM is transmitted to the first passage second convex lens L2 with described directional light
1, and converge to holofilm 8, as the first optical channel object beam; The beam splitting reflected light of described unit beam splitter P0 is reflected by the second total reflective mirror M2, again by the first reference light beam splitter P2
1Reflect to form the reference light of first optical channel, the thing Shu Guangyu reference light of first optical channel overlaps on holofilm 8, simultaneous computer 2 is done two-dimentional moving in the egative film plane by D/A-A/D data collecting card 1, two-dimension displacement assembly apparatus 4 control holofilms 8, forms the passage hologram of an optical channel.
The reference light of its excess-three optical channel forms: the second total reflective mirror M2 reflected light is through the first reference light beam splitter P2
1After the transmission, the transmission second reference light beam splitter P2 successively again
2With the 3rd reference light beam splitter P2
3After, reflecting to form the reference light of the 4th optical channel by the 3rd total reflective mirror M3, the described second total reflective mirror M2 reflected light is through the first reference light beam splitter P2
1, the second reference light beam splitter P2
2With the 3rd reference light beam splitter P2
3The reflection back forms the reference light of first to the 3rd optical channel, and the course of work of described three optical channel recording holographics is identical with first optical channel, repeats no more.
Four optical channels form whole hologram in the passage hologram amalgamation of holofilm 8 records.
Claims (4)
1. the multi-channel holographic recording method of numerical information stereo display, the device that this method is used comprises D/A-A/D data collecting card (1), computing machine (2), video distributor (3), two-dimension displacement assembly apparatus (4) and e hologram image are made optical module unit (5), each hologram image is made optical module unit (5) and is had f optical channel, a described f optical channel is uniform along rectilinear direction, e hologram image made parallel equidistant setting between the optical module unit (5), e hologram image made the optical channel composition e * f optical channel array of optical module unit (5), described optical channel array is corresponding with a LCD space light modulator (SLM)
It is characterized in that, realize that the inventive method may further comprise the steps:
Step 1,3-D view is converted to the two dimensional image array of a * b different visual angles in computing machine (2), wherein a and b are positive integer;
The f number of sub images, a display unit on the corresponding holofilm of each subimage (8);
Subimage array [the Z that forms
11, Z
12..., Z
1fZ
21, Z
22..., Z
2f Z
E1, Z
E2..., Z
Ef], each subimage has M * N pixel, and the array that the pixel that each subimage has forms is [D
11, D
12..., D
1ND
21, D
22..., D
2N D
M1, D
M2..., D
MIN], wherein, e, f, M and N are positive integer;
Step 3, computing machine (2) are with the two dimensional image array operation of described a * b different visual angles and the passage composograph P of e * f optical channel of synthetic processing acquisition
Ij,
Each passage composograph Pij is by M * N sub-composograph P
XyForm,
Computing machine (2) is done two-dimentional moving in the egative film plane by D/A-A/D data collecting card (1), two-dimension displacement assembly apparatus (4) control holofilm (8), holofilm (8) whenever moves once, and each optical channel is gone up in LCD space light modulator (SLM) by video distributor (3) and shown a width of cloth composograph P
Xy, the output record of described optical channel go up to form a pixel at holofilm (8), and the two dimension by holofilm (8) moves, and makes all pixels in the corresponding display unit on the output traversal holofilm (8) of each optical channel,
The forming process of the pixel of the capable y row of x is in each display unit on the holofilm (8):
The electronic shutter (7) that computing machine (2) is made optical module unit (5) by e hologram image of D/A-A/D data collecting card (1) control is worked simultaneously, hologram image is made the laser of laser instrument (6) output of optical module unit (5) and is exported by electronic shutter (7), after the beam splitting transmitted light after the unit beam splitter beam splitting passes through the transmission of f-1 thing light beam splitter successively, reflect to form the incident light of f optical channel by first total reflective mirror (M1), the beam splitting transmitted light of described unit beam splitter forms first incident light to f-1 optical channel through f-1 thing light beam splitter reflection back successively, f optical channel incident light light intensity is identical
The emergent light of each optical channel forms object beam and converges on the holofilm (8), the beam splitting reflected light of described unit beam splitter is reflected by second total reflective mirror (M2), after passing through the transmission of f-1 reference light beam splitter more successively, reflect to form the reference light of f optical channel by the 3rd total reflective mirror (M3), described second total reflective mirror (M2) reflected light forms first reference light to f-1 optical channel through f-1 reference light beam splitter reflection back successively, the light intensity of f reference light is identical, the object beam of each optical channel overlaps on holofilm (8) with its corresponding reference light, wherein, 1 〉=i 〉=e, 1 〉=j 〉=f, 1 〉=x 〉=M, 1 〉=y 〉=N
Each optical channel is gone up record at holofilm (8) simultaneously according to the method described above and is formed e * f passage hologram, and described e * f passage hologram amalgamation forms whole hologram.
2. the multi-channel holographic recording method of numerical information stereo display according to claim 1, it is characterized in that, the rule that is provided with of the two dimensional image array of the described different visual angles of step 1 is: horizontal direction is got the two dimensional image at b visual angle, vertical direction is got the two dimensional image at a visual angle, constitutes the two dimensional image array [V of the capable b row of a different visual angles
11, V
12..., V
1bV
21, V
22..., V
2b V
A1, V
A2..., V
Ab]
3. the multi-channel holographic recording method of numerical information stereo display according to claim 2 is characterized in that, the described passage composograph of step 3 P
IjDemonstration rule on LCD space light modulator (SLM):
LCD space light modulator (SLM) is by described e * f optical channel array general layout configuration distribution composograph array [P
11, P
12..., P
1fP
21, P
22..., P
2f P
E1, P
E2..., P
Ef]
Each passage composograph P
IjIn pixel take from all two dimensional images and the corresponding subimage Z of its coordinate
Ij, passage composograph P
IjArray of display be:
P
ij＝{V
11[Z
ij(D
xy)]，V
12[Z
ij(D
xy)]，V
13[Z
ij(D
xy)]，…，V
1b[Z
ij(D
xy)]；V
21[Z
ij(D
xy)]，V
22[Z
ij(D
xy)]，V
23[Z
ij(D
xy)]，…，V
2b[Z
ij(D
xy)]；…；V
a1[Z
ij(D
xy)]，V
a2[Z
ij(D
xy)]，V
a3[Z
ij(D
xy)]，…，V
ab[Z
ij(D
xy)]}。
The multi-channel holographic recording method of [claim 4] numerical information stereo display according to claim 3 is characterized in that, each passage composograph P
IjIn V
a[Z
Ij(D
Xy)] pixel obtain by following method:
At two dimensional image V
RsIn subimage Z
IjIn from left to right, pixel D from top to bottom
Xy, by from right to left, Cahn-Ingold-Prelog sequence rule from top to bottom throws successively and obtain described passage composograph P
IjIn a pixel V
a[Z
Ij(D
Xy)], 1 〉=r 〉=a wherein, 1 〉=s 〉=b.
5. the multi-channel holographic recording method of numerical information stereo display according to claim 1 is characterized in that, the process that the emergent light of described each optical channel of step 3 forms object beam is:
Each optical channel incident light expands bundle through beam expanding lens and forms expansion Shu Guang, described expansion Shu Guangjing first convex lens form directional light and incide on the LCD space light modulator (SLM), LCD space light modulator (SLM) is transmitted to second convex lens with described directional light, and converges on the holofilm (8) through described second convex lens formation object beam.
Priority Applications (1)
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