CN106980178A - A kind of phase-type LCoS image-signal processing methods and near-eye display system - Google Patents
A kind of phase-type LCoS image-signal processing methods and near-eye display system Download PDFInfo
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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Abstract
The present invention discloses a kind of phase-type LCoS image-signal processing methods, and optical imagery is generated to the image information and the incident beam modulated that input phase-type LCoS using improved GS algorithms.Invention additionally discloses a kind of phase-type LCoS near-eye display systems, including light source module, the collimation uniform plane wave of phase-type LCoS modules is incident to for sending laser and generating；Phase-type LCoS modules, including phase-type LCoS and processing unit, the picture signal that described processing unit is used to handle the input phase-type LCoS is handled, and described phase-type LCoS is used for the image information of display processing unit input and reflects the light beam for carrying image information；Described image receiver module or human eye, for gathering the image information that the light beam reflected by the phase-type LCoS is carried, the optic virtual image of generation is superimposed with reality scene, generation image is to meet virtual reality effect.
Description
Technical field
The invention belongs to nearly eye display technology field, more particularly to a kind of phase-type LCoS image-signal processing methods and
Phase-type LCoS near-eye display systems.
Background technology
Nearly eye Display Technique is widely used in many fields, in early days based on military, scientific research, with the progress of science and technology with
And the breakthrough of core technology, near-eye display system develops to light, the cheap direction of profile steadily.Nearly eye display system
System has been stepped into daily life now, and people can carry out various amusements by near-eye display system, such as see a film,
Play game.Near-eye display system will further enrich the life of people.
LCoS rises as a kind of miniature Display Technique in late 1990s, with the ripe of technology, technique it is complete
It is kind, gradually there is good application in nearly eye display field.In addition, LCoS Display Techniques just with its high-res, high brightness,
Inexpensive the advantages of, progressively replaces conventional Display Technique and shadow casting technique, a critically important advantage of LCoS Display Techniques
Be can in the small screen display of high resolution picture material.
LCoS structure is to grow electric crystal on the monosilicon, using the integrated making driving panel of semiconductor, then in electricity
Polished on crystal by grinding technique, and membrane electrode is aluminized as speculum above, form CMOS active dot matrix substrates, then
CMOS substrate is fitted with the top glass substrate containing ito transparent electrode, the encapsulation of liquid crystal Sunday row is reinjected.LCoS points of phase-type
Resolution is 1920*1080, is controlled by LETO spatial light modulators (SLM).The spacing of each pixels of phase-type LCoS is 6.4 micro-
Gap is 0.2 micron between rice, pixel, and aperture opening ratio reaches 93%, and reflectivity reaches 75%.LETO phase-modulators are controlled as LCoS
Device processed is placed on outside and is connected by HDMI wire with computer display card, and does not need other software or specialized hardware to control
System.If necessary to further calibration LETO equipment, it is necessary to the USB connections of standard.Equipment provides 256 gray scale levels response user and referred to
Fixed wavelength, response can be adjusted in the range of 2 π by the correction software of offer makes equipment adapt to different wavelength needs.
Input phase-type LCoS picture signal is all to calculate acquisition by calculating holographic method, and most basic wherein
It is GS (Gerchberg-Saxton) algorithm.The basic ideas of GS algorithms are：Known initial phase and incident light given in advance
Field distribution, by doing positive Diffraction Transformation, obtains output plane optical field distribution；Output plane introduce restrictive condition, i.e., to
The former optical field amplitude distribution of optical field amplitude distribution substitution of prestige, while keeping phase invariant；Then reverse Diffraction Transformation is done, obtains defeated
Enter planar lightfield distribution；Restrictive condition is introduced in input plane, i.e., with the given former optical field amplitude point of optical field amplitude distribution substitution
Cloth, while keeping phase invariant；Then positive Diffraction Transformation is done again, so circulation is gone down, until obtaining satisfactory result or reaching
Untill enough cycle-indexes.Because there is LCoS discrete pixels structure to be considered a kind of optical grating construction, so
LCoS imagings will inevitably form zero level speck.
The content of the invention
It is an object of the invention to provide a kind of phase-type LCoS image-signal processing methods and near-eye display system,
LCoS imaging systems were used in optical projection system in the past, and the present invention is improved conventional optical projection system, it is proposed that brand-new
The system angle of visual field is increased based on the near-eye display system of LCoS image-signal processing methods, and by serial of methods, suitably
Improve definition.
Existing GS algorithms are in initially iteration several times, and convergence rate is very fast, but slows down significantly in subsequent convergence rate.This
The image-signal processing method of invention has also carried out appropriate adjustment on the basis of GS algorithms, introduces some state modulators its errors
Function simultaneously improves convergence rate to adapt to the use requirement of the present invention.
Most of kinoform that phase-type LCoS is inputted in the present invention is all to calculate gained by GS algorithms or its innovatory algorithm.
Iteration carries out Fourier transformation back and forth between the tangible object plane of GS algorithms and spectrum plane, and applies on object plane and spectrum plane
The restrictive condition known, therefore this algorithm is also referred to as iterative Fourier transform algorithm.
To solve above-mentioned technical problem, the technical solution adopted in the present invention is as follows：
A kind of phase-type LCoS image-signal processing methods, including：
Step 1：Generate the corresponding object plane wave function of initial picturesA represents the amplitude of incident light,Represent
Initial phase, i represents imaginary unit, without actual physical meaning；
Step 2：By initial object plane wave function fnKirchhoff diffraction integral formula is substituted into, Fourier transformation is carried out and obtains it
Spectrum face wave function un；
Step 3：Utilize the real amplitude B substitution spectrums face wave function u of initial picturesnAmplitude, generate new spectrum face wave function
Step 4：To new spectrum face wave functionThe progress inverse Fourier transform of kirchhoff inverse diffraction integral formula is substituted into obtain
To object plane wave function fn+1；
Step 5：Utilize real amplitude A substitution object plane wave function fn+1Amplitude, constitute next iteration object plane wave function
Step 6：The iterative cycles of 2~step 5 of repeat step, judge that the mean square error SSE after each iteration and fitting are
Number η, until the mean square error SSE and fitting coefficient η after adjacent iteration twice are less than the threshold value of setting, and is exported after n iteration
Object plane wave function；
Step 7：Load the phase information of balzed grating, and with the phase of the object plane wave function of n iteration, the phase for calculating newly
Bit distribution is For the phase information of balzed grating,For object plane wave function after n iteration
Phase,As input the phase-type LCoS corresponding phase of image information.
In the step 6 of the present invention, described threshold value is the variable quantity of mean square error after adjacent iteration twice, as there is choosing
, stop iteration when variable quantity is less than 10%.
The present invention also provides a kind of phase-type LCoS near-eye display systems, including light source module, phase-type LCoS modules and
Image receiver module,
Described light source module, the collimation uniform planars of phase-type LCoS modules is incident to for sending laser and generating
Ripple；
Phase-type LCoS modules, including phase-type LCoS and processing unit, described processing unit is according to above-mentioned phase-type
LCoS image-signal processing methods are handled the picture signal for inputting the phase-type LCoS, and described phase-type LCoS is used
In display processing unit input image information and reflect carry image information light beam；
Described image receiver module, for gathering the image information that the light beam reflected by the phase-type LCoS is carried,
Record the diffraction image that phase-type LCoS is produced and the reality scene image projected.
In the present invention, the processing unit in phase-type LCoS modules is adjusted according to the image information and incident light beam of input
System, the image information that generation phase-type LCoS is shown.Image receiver module folds the optic virtual image of generation with reality scene
Adduction record exists, and generation image is to meet virtual reality effect.
As there is choosing, described light source module includes what is be sequentially arranged along light path：Laser for sending laser beam
Device；For the adjustable attenuator for the laser intensity for adjusting incident phase-type LCoS；For the laser by phase-type LCoS is incided
Become the beam-expanding collimation mechanism of collimation uniform plane wave, beam-expanding collimation mechanism is expanded by changing different size of pin hole to adjust
The diameter of uniform light spots afterwards.
In above-mentioned phase-type LCoS modules, phase-type LCoS is controlled by LETO spatial light modulators, LETO spatial lights
Modulator is connected to processing unit (such as computer) by HDMI wire.On computers by corresponding algorithm by required image meter
Calculate and generate its kinoform, then inputted kinoform in LCoS by LETO spatial light modulators.
Kinoform needs to be obtained by calculating holographic method, and algorithm proposed by the present invention suitably changes on the basis of GS algorithms
Enter to eliminate the interference of zero level speck, improve definition, will be introduced in ensuing embodiment and improve GS algorithms generation phase
Cease the process of figure.
In described phase-type LCoS modules, in order to initialize or recalibrate LCoS parameter, it is necessary to which LETO is empty
Between optical modulator be directly connected by USB line with computer, and by software kit set wavelength parameter, adjustment phase place matching,
To obtain better image output.
As setting devating prism between preferred, described beam-expanding collimation mechanism and phase-type LCoS or polarization spectroscope,
For launching the light beam of beam-expanding collimation mechanism outgoing into phase-type LCoS and transmiting the light beam that phase-type LCoS surfaces are reflected.
As preferred, 4f systems and diaphragm are set between described phase-type LCoS and image receiver module；Described
4f systems have the two panels convex lens that are set gradually along light path, first focal length of lens 100mm, the second front lens focal length 400mm,
The front focal plane coincidence of the back focal plane and second lens of first lens；The diaphragm is located at after first lens of 4f systems
Focal point.
The present invention is by adding 4f systems to increase the angle of visual field, while adding diaphragm at the gonglion of 4f systems to filter out
Advanced Diffraction speck, improves imaging definition.
The present invention is also proposed based on Binocular displays system is modified to after phase-type LCoS near-eye display system designed in mirror image, together
When the kinoform mirror image processings shown of the LCoS after mirror image can be ensured that the virtual image that eyes are seen is identical.
A kind of phase-type LCoS near-eye display systems, including mirror holder and light source module and phase-type in mirror holder
LCoS modules；
Described light source module, the collimation uniform planars of phase-type LCoS modules is incident to for sending laser and generating
Ripple；
Phase-type LCoS modules, including phase-type LCoS and processing unit, described processing unit according to claim 1~
Phase-type LCoS image-signal processing methods described in 3 are handled the picture signal for inputting the phase-type LCoS, described
Phase-type LCoS be used for image information that display processing unit inputs and reflection carries the light beam of image information, by described
The light beam of phase-type LCoS reflections enters human eye formation Binocular displays.
Phase-type LCoS near-eye display systems in the present invention are adapted to human eye by mirror holder and worn, and human eye may replace image and connect
Receive module and carry out Binocular displays；Further, can be by two sets of phase-type LCoS near-eye display systems, while by after mirror image
The kinoform mirror image processing that LCoS is shown can ensure that the virtual image that eyes are seen is identical.
The need for meeting human eye Binocular displays, as preferred, 4f is set between described phase-type LCoS and human eye
System and diaphragm；Described 4f systems have the two panels convex lens that are set gradually along light path, first focal length of lens 30mm, second
Front lens focal length 60mm, the front focal plane coincidence of the back focal plane and second lens of first lens；The diaphragm is located at 4f systems
First lens rear focal point.
The present invention can also realize the Binocular displays of eyes by same phase-type LCoS near-eye display systems, as preferred
, the first semi-transparent semi-reflecting lens and the second semi-transparent semi-reflecting lens are placed along light path in the front of right and left eyes respectively, it is identical for reflecting
Light intensity enters right and left eyes.Therefore, it can equally ensure that eyes are seen by the transmitance and reflectivity of two pieces of semi-transparent semi-reflecting lens of design
Virtual image is identical, while reducing design complexities.
Brief description of the drawings
Fig. 1 is a flow chart embodiment that Target Photo kinoform is drawn based on GS algorithms；
Fig. 2 is the most basic structure chart of phase-type LCoS near-eye display systems；
Fig. 3 is that phase-type LCoS near-eye display systems increase the angle of visual field and remove the reality of zero level speck and Advanced Diffraction interference
Apply example；
Fig. 4 is that the light path design that phase-type LCoS near-eye display systems are applied in Binocular displays and structural adjustment are implemented
Example；
Fig. 5 is light path design embodiment of phase-type LCoS near-eye display systems when using single optical engine.
Embodiment
The detailed description of the present invention is mainly by program, step, logical block, process or other symbolistic descriptions come directly
Or the running of simulation technical solution of the present invention indirectly.For the thorough explanation present invention, it set forth very in following description
Many specific details.And in these specific details, it is of the invention then can still may realize.Technical staff in art makes
Their work essence is effectively introduced with these descriptions herein and the others skilled in the art for stating into art.Change sentence
Talk about, for the purpose of the present invention of avoiding confusion, because well known method, program, composition and circuit are it will be understood that therefore
They are not described in detail.
" embodiment " referred to herein refers to special characteristic, the structure that may be included at least one implementation of the invention
Or characteristic." in one embodiment " that different places occur in this manual not refers both to same embodiment, nor
The single or selective embodiment mutually exclusive with other embodiment.In addition, represent the method for one or more embodiments,
Sequence of modules and any particular order of revocable reference in flow chart or functional block diagram, the limit to the present invention is not constituted yet
System.
Fig. 1 is an embodiment based on GS algorithms, the image information according to input and incidence using algorithm in embodiment
Light modulation generates phase-type LCoS optical imagerys to display, and the algorithm is a kind of using successive ignition solution image kinoform
Phase Retrieve Algorithm, the basic step of its loop iteration is as follows：
(1) such as step 101, the phase to the object plane wave function of known real amplitude assigns initial value, that is, selectsAnd group
Into the corresponding initial object plane wave function of initial picturesAnd make iterations n=0, such as step 102；
(2) object plane wave function is substituted into Kirchhoff diffraction integral formula, carries out Fourier transformation and obtain its spectrum face wave function
un, i.e.,
Wherein λ is the wavelength of incident light, and k=2 π/λ is wave number, and r is the position vector of any point on plane wave corrugated, and θ is
Any point is to the light of frequency plane and the angle of horizontal direction；
(3) with the real amplitude B substitution spectrums face wave function u of initial picturesnAmplitude, constitute new spectrum face ripple letter with its phase
Number, i.e.,Such as step 104；
(4) to new spectrum face wave functionSubstitute into the progress inverse Fourier transform of kirchhoff inverse diffraction integral formula and obtain thing
Face wave function fn+1, such as step 106；
(5) such as step 107, object plane wave function f is replaced with known real amplitude An+1Amplitude, keep phase invariant, composition
The object plane wave function of next iteration, i.e.,
In formula, Q is the clear aperature of picture.
(6) such as step 108, respective symbol is iterated, i.e.,Step 103 is then return to start
Iterative cycles next time；
(7) such as step 105, after n iteration, the light distribution in viewing plane is can obtain, and the phase of picture is divided
Cloth isNow to judge the result after successive ignition, decide whether to stop using mean square error SSE or fitting coefficient η
Only iteration, wherein
Wherein, u, v are x, y corresponding spatial frequencys on frequency plane, and ε and γ are two percentages, are divided in the present invention
5% and 95% are not taken.With the increase of iterations, error is gradually reduced.Work as SEE<It can stop changing during 5% and η ＞ 95%
In generation, obtain output result, such as step 109；
(8) because there is LCoS discrete pixels structure to be considered a kind of optical grating construction, so LCoS imagings will not
Evitable formation zero level speck, balzed grating, is a kind of conventional diffraction optical element, with sparkling property, therefore uses it
The phase that characteristic processing GS algorithms are obtained will effectively solve the problems, such as zero level speck.Balzed grating, typically enters by the cycle of 2 π to light wave
Row modulation, readjusts the diffraction direction of light so that reproduction image is offset, you can avoid zero level speck.According to the periodicity of light wave
Matter, after the phase information of balzed grating, is loaded into algorithm, its phase can exceed that its cycle, it is therefore desirable to new phase
Position carries out remainder operation to 2 π, and obtained phase distribution can obtain the expression formula of balzed grating, between 0~2 π：
Wherein m, n are two-dimentional balzed grating, transverse and longitudinal scopes, and T is screen periods, and x, y represents to be loaded into m and n directions respectively
Balzed grating,.Bring the phase of GS algorithms acquisition intoShow that new phase distribution is afterwardsAs walked
Rapid 110；
(9)The as phase of final output, that is, phase-type LCoS image informations to display, such as step
111。
Fig. 2 is the basic block diagram of phase-type LCoS near-eye display systems.System mainly includes light source module, phase-type
LCoS modules and image receiver module.Specifically include：LASER Light Source 201, can for a certain monochromatic light of RGB or
Multiple laser complex light, laser sends laser into LCoS modules as light source；Adjustable attenuator 202, the device is to adjust
The laser light intensity of incidence LCoS systems is saved, different experiments light intensity needs are adapted to.Beam-expanding collimation mechanism 203, the mechanism is by micro-
Object lens, pin hole and convex lens group into.Laser beam after microcobjective at pin hole by assembling, and then diverging is by collimation convex lens
Mirror becomes to collimate uniform plane wave.Devating prism or polarization spectroscope 204, uniform plane wave are reflected by the plane of polarization of devating prism
Afterwards to phase-type LCo 205.On phase-type LCoS surfaces reflection occurs for subsequent light beam again by devating prism, to image-receptive
Module, in the process light beam become P ripples by polarization.Semi-transparent semi-reflecting lens 206, light beam is after the reflection of semi-transparent semi-reflecting lens 206
Into camera gun 207, camera gun 207 can record the diffraction image that the LCoS reflected through semi-transparent semi-reflecting lens is produced simultaneously
With the reality scene image of projection, the purpose that virtual image and display scene are combined so is reached.
Fig. 3 is that system increases the angle of visual field and removes the embodiment of zero level speck and Advanced Diffraction image.Fig. 3 and Fig. 2 master
Distinguish is in image receiving system, also including LASER Light Source 301, adjustable attenuator 302, beam-expanding collimation mechanism 303, polarization rib
Mirror or polarization spectroscope 304, phase-type LCo305, semi-transparent semi-reflecting lens 308 and camera gun 309.System sets up 4f systems 306
With diaphragm 307,4f systems 306 by two panels convex lens group into.It is burnt after the lens when light beam is by 306 first lens of 4f systems
It is imaged at point, now because phase-type LCoS diffraction characteristic can produce multiorder diffractive pattern, a diaphragm is placed in focal point
307, in the present invention we the center of virtual image is displaced to positive one-level by zero level, the adjustment position of diaphragm 307 and logical
Light aperture can pass through positive one-level, just obtain clear glitch-free image.The complete phase of the focal length of two panels lens before and after 4f systems
Together, the image f iotaeld-of-view angle obtained does not have amplification effect, it is therefore desirable to which the focal length of lens is adjusted, and plays whole system and puts
Big effect, the present embodiment is used after first focal length of lens 100mm, the second front lens focal length 400mm, first lens
The front focal plane of focal plane and second lens is overlapped, and now image plays best amplification effect, measured, and the angle of visual field is 35
Degree.
Fig. 4 is the light path design embodiment that phase-type LCoS near-eye display systems are applied in Binocular displays.With two sets
Component identical phase-type LCoS near-eye display systems, correspond to right and left eyes respectively.Often set phase-type LCoS near-eye display systems are equal
Including LASER Light Source 401, adjustable attenuator 402, beam-expanding collimation mechanism 403, devating prism or polarization spectroscope 404, phase-type
LCo405,4f system 406, diaphragm 407 and semi-transparent semi-reflecting lens 408.In the present embodiment, for ease of wearing, mirror holder or head can be set
Helmet, each part is arranged on mirror holder or the helmet.It is fine and smooth to receive image that the eyes 409 of people replace camera lens.Due to the eye of people
Mirror is also an optical system, and its principle is similar with camera lens, so suitably regulation eye positions are it will also be seen that clear
Image.For compression stroke, the two panels convex lens in 4f systems 406 need adjusting parameter, and the focal length of lens away from human eye is
30mm, the focal length of lens close to human eye is 60mm, and other position relationships are identical with Fig. 3 embodiments.The design have compressed system
Volume, use interpupillary distance and be reduced to 15mm, be more suitable for human eye and wear, but amplification effect compared with Fig. 3 embodiments compared to having declined,
The angle of visual field is 30 degree.The optical system of right and left eyes is identical, therefore the bridge of the nose position on people of light path design and left eye of right eye
Specular is put, when the specular of pattern and left eye that the light engine of right eye is exported, the virtual graph that two eyes are seen
As will be completely the same, the effect of Binocular displays so can reach.
Fig. 5 is light path design embodiment of phase-type LCoS near-eye display systems when using single optical engine.Using list
Set phase-type LCoS near-eye display systems realize the Binocular displays of right and left eyes.Including LASER Light Source 501, adjustable attenuator 502, expand
Beam collimation mechanism 503, devating prism or polarization spectroscope 504, phase-type LCo505,4f system 506, diaphragm 507, first are semi-transparent
The semi-transparent semi-reflecting lens 510 of semi-reflective mirror 508 and second.4f systems 506 are two panels convex lens, are set using the optics described in Fig. 4 embodiments
Meter.The first semi-transparent semi-reflecting lens 508 are first passed around after light beam is by 54f systems 06, the reflectivity of the semi-transparent semi-reflecting lens is 30%,
Transmitance is 60%, and light beam passes through the left eye 509 for reflexing to i.e. people by after the first semi-transparent semi-reflecting lens 508 30% luminous energy；
The second semi-transparent semi-reflecting lens 510, the reflectivity of the semi-transparent semi-reflecting lens are propagated to after 60% the first semi-transparent semi-reflecting lens of light-transmissive 508
For 50%, the luminous energy for being so reflected into the right eye 511 of i.e. people is 30%, can so ensure to enter two glasses virtual representations
Light intensity it is identical.It is remote in the second semi-transparent semi-reflecting lens 510 in order to ensure that the light intensity that true environment is transmitted into human eye is also identical
The one side of glasses plates one layer of anti-reflection film, and increase can so ensure to enter two eyes through the light intensity of the second semi-transparent semi-reflecting lens 510
The light intensity of eyeball is identical with image information.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that, to technical scheme carry out it is various combination,
Modification or equivalent substitution, without departure from the spirit and scope of technical solution of the present invention, the right that all should cover in the present invention is wanted
Ask among scope.
Claims (10)
1. a kind of phase-type LCoS image-signal processing methods, it is characterised in that including：
Step 1：Generate the corresponding object plane wave function of initial picturesA represents the amplitude of incident light,Represent initial
Phase, i represents imaginary unit；
Step 2：By initial object plane wave function fnKirchhoff diffraction integral formula is substituted into, Fourier transformation is carried out and obtains its spectrum face
Wave function un；
Step 3：Utilize the real amplitude B substitution spectrums face wave function u of initial picturesnAmplitude, generate new spectrum face wave function
Step 4：To new spectrum face wave functionSubstitute into the progress inverse Fourier transform of kirchhoff inverse diffraction integral formula and obtain thing
Face wave function fn+1；
Step 5：Utilize real amplitude A substitution object plane wave function fn+1Amplitude, constitute next iteration object plane wave function
Step 6：The iterative cycles of 2~step 5 of repeat step, judge the mean square error SSE after each iteration and fitting coefficient η,
Until the mean square error SSE and fitting coefficient η after adjacent iteration twice is respectively less than after the threshold value of setting, and n iteration of output
Object plane wave function；
Step 7：Load the phase information of balzed grating, and with the phase of the object plane wave function of n iteration, the phase for calculating newly point
Cloth is For the phase information of balzed grating,For the phase of object plane wave function after n iteration
Position,As input the phase-type LCoS corresponding phase of image information.
2. phase-type LCoS image-signal processing methods as claimed in claim 1, it is characterised in that in step 6, described
Threshold value is the variable quantity of mean square error SSE and fitting coefficient η after adjacent iteration twice.
3. phase-type LCoS image-signal processing methods as claimed in claim 1, it is characterised in that the table of the balzed grating,
It is up to formula：
Wherein, m, n are two-dimentional balzed grating, transverse and longitudinal scopes, and T is screen periods, and x, y represents to be loaded into the sudden strain of a muscle in m and n directions respectively
Credit grating.
4. a kind of phase-type LCoS near-eye display systems, it is characterised in that including light source module, phase-type LCoS modules and image
Receiving module,
Described light source module, the collimation uniform plane waves of phase-type LCoS modules is incident to for sending laser and generating；
Phase-type LCoS modules, including phase-type LCoS and processing unit, described processing unit is according to claims 1 to 3 institute
The phase-type LCoS image-signal processing methods stated are handled the picture signal for inputting the phase-type LCoS, described position
Facies pattern LCoS is used for the image information of display processing unit input and reflects the light beam for carrying image information；
Described image receiver module, for gathering the image information that the light beam reflected by the phase-type LCoS is carried, record
Diffraction image and the reality scene image of projection that phase-type LCoS is produced.
5. phase-type LCoS near-eye display systems as claimed in claim 4, it is characterised in that
Described light source module includes what is be sequentially arranged along light path：
Laser for sending laser beam,
For the adjustable attenuator for the laser intensity for adjusting incident phase-type LCoS,
For the laser for inciding phase-type LCoS to be become to collimate the beam-expanding collimation mechanism of uniform plane wave.
6. phase-type LCoS near-eye display systems as claimed in claim 5, it is characterised in that described beam-expanding collimation mechanism and
Devating prism or polarization spectroscope are set between phase-type LCoS, and the light beam for launching the outgoing of beam-expanding collimation mechanism enters phase-type
LCoS and the light beam for transmiting the reflection of phase-type LCoS surfaces.
7. phase-type LCoS near-eye display systems as claimed in claim 4, it is characterised in that in described phase-type LCoS and
4f systems and diaphragm are set between image receiver module；
Described 4f systems have the two panels convex lens set gradually along light path, first focal length of lens 100mm, the second front lens
Focal length 400mm, the front focal plane coincidence of the back focal plane and second lens of first lens；The diaphragm is located at the first of 4f systems
The rear focal point of piece lens.
8. a kind of phase-type LCoS near-eye display systems, it is characterised in that the light source die including mirror holder and in mirror holder
Block and phase-type LCoS modules；
Described light source module, the collimation uniform plane waves of phase-type LCoS modules is incident to for sending laser and generating；
Phase-type LCoS modules, including phase-type LCoS and processing unit, described processing unit is according to claims 1 to 3 institute
The phase-type LCoS image-signal processing methods stated are handled the picture signal for inputting the phase-type LCoS, described position
Facies pattern LCoS is used for the image information of display processing unit input and reflection carries the light beam of image information, by described position phase
The light beam of type LCoS reflections enters human eye formation Binocular displays.
9. phase-type LCoS near-eye display systems as claimed in claim 8, it is characterised in that in described phase-type LCoS and
4f systems and diaphragm are set between human eye；
Described 4f systems have the two panels convex lens set gradually along light path, first focal length of lens 30mm, the second front lens
Focal length 60mm, the front focal plane coincidence of the back focal plane and second lens of first lens；The diaphragm is located at the first of 4f systems
The rear focal point of piece lens.
10. phase-type LCoS near-eye display systems as claimed in claim 9, it is characterised in that respectively right and left eyes just before
The first semi-transparent semi-reflecting lens and the second semi-transparent semi-reflecting lens are placed along light path by side, enter right and left eyes for reflecting identical light intensity.
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