CN1132026C - Diffraction grating recorder and optical recording method of planar or stereo acoustics - Google Patents
Diffraction grating recorder and optical recording method of planar or stereo acoustics Download PDFInfo
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- CN1132026C CN1132026C CN 99122227 CN99122227A CN1132026C CN 1132026 C CN1132026 C CN 1132026C CN 99122227 CN99122227 CN 99122227 CN 99122227 A CN99122227 A CN 99122227A CN 1132026 C CN1132026 C CN 1132026C
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Abstract
The present invention relates to a diffraction grating device of an optical interference pattern and a stereo image or plane image recording method of the diffraction grating device. An optical transposer is used for displaying images and converting image optical waves into interference amplitude optical waves; images are reduced on recording material or a reference light projector having a functional optical lens assembly at the vicinity and controllable light beam directions. The present invention can use a single step to carry out operation; an operation system is easily changed, or two operation modes are simultaneously compounded to manufacture the same diffraction grating; the function of holographic counterfeiting resistance is increased, formed holographic elements are not mutually overlapped, and the visual quality of finished products is greatly increased.
Description
Technical field
The present invention relates to the recording method of a kind of diffraction grating device and solid or flat image, specifically, relate to a kind of recording method of diffraction grating recorder and solid or flat image of optical interference pattern.
Background technology
The device that has optics diffraction effect about the image reduced projection with formation, Poland Patent NO.PTC/PL96/00018 has stated and has utilized optical display to show after complicated calculations and the fourier transform Information Images that obtains, and its reduced projection is imaged onto on the photosensitive material, with the holography that formation has stereoeffect, be used for commercial false proof.This method and device have a lot of incomplete places, as: calculate fourier transform information and will cause the waste of computing time and the loss of computing information in the mode that forms plane or stereopsis, and formed plane or stereopsis and general holographic synthetic method there is no tangible difference, seen right through someone and utilize the model applying to expose easily by the people and copied, this technology is preventing that effect is undesirable in the personation.
The method that forms about raster image in addition is as No. 5132812 patent of the U.S., the patented claim that No. the 91306316.0th, the U.S.) generally all utilize two light beams to focus on a bit to form form of raster element, be integrated into the raster image of dot matrix type.This mode because of two light beam incidents from different angles, so the interference point that forms be circular or oval, easily cause the space between adjacent, and cause the skewness of the optics diffraction intensity of raster element because of the maldistribution of light beam section intensity.Add the finiteness of light beam section, the fineness of its formed whole raster image is difficult to significantly improve.
For solving the aforesaid drawbacks, generally scan the raster image (as No. 5784200th, the U.S. and No. 5132812 patent) of each grating with the record high-res with the electron gun trace system.But electron gun trace system price is higher, keeps in repair very complicatedly, and operating environment is very strict, and it is slower to describe speed, and employed recording materials are different from general hologram recording material, so in conjunction with traditional record great difficulty is arranged.
Summary of the invention
The purpose of this invention is to provide the pen recorder and the recording method of a kind of diffraction grating and solid thereof or flat image, it can provide the single operation step and use the recording method of composite anti-fake function to improve antifalse effect for diffraction grating.
For achieving the above object, the present invention is by the following technical solutions:
A kind of diffraction grating recorder, it comprises following main composition mechanism:
Can be in disturbing light source generator, sound equipment optics transposer, diffuser plate, pin hole light shield, 1/2 wavelength plate), 1/4 wavelength plate, beam splitter, space optics transposer, the adjustable combination of lenses of focus, autofocus system, material stationary platform, horizontal vertical direction transfer table, the reference light projector, system control device, light beam open and close valve;
Its connection interactive relationship of mainly forming mechanism is as follows: described system control device is connected with described light beam open and close valve, sound equipment optics transposer, diffuser plate, space optics transposer, the adjustable combination of lenses of focus, horizontal vertical direction transfer table control gear through its interface, plan as a whole control running and calculating, handle the image and the numerical information of required output record, have special optical diffraction function or have the purpose that to duplicate the optical media of counterfeit function with the exposure of fitting to reach record;
The system that is combined by described sound equipment optics transposer, diffuser plate, pin hole light shield, 1/2 wavelength plate, 1/4 wavelength plate, beam splitter, space optics transposer, the adjustable combination of lenses of focus is positioned over one and is held in the rigid body, to maintain its ad hoc structure relation each other in the operation, this is held rigid body and is connected in to have and moves up and down and the automatic described autofocus system of focusing function, is supported the motion of autofocus system by system's support;
Described can be fixed position device in disturbing light source generator, system's support, system control device, the reference light projector, and described horizontal vertical direction transfer table drives the position that the material stationary platform moves to institute's desire exposure.
A kind of diffraction grating recording method with plane or stereoptics diffraction effect, it is to utilize described space optics transposer to show the optical strength distribution image of gained as calculated, and utilize the described diffuser plate of high speed rotating to change the coherent light bundle into the non-light beam that disturbs, illumination is on the image of described space optics transposer, the distribution of amplitudes of its image is again via the adjustable combination of lenses of described focus, dwindle with suitable multiplying power, projection imaging is to described optics photosensitive material face, and the described diffuser plate that utilizes high speed rotating is to obtain the light wave noise of moment different distributions, in between certain certain exposure period, addition average effect because of the light wave noise intensity of different distributions, but lower because of the certainty light wave noise that jamming light source produced, the small light beam element set that writes down via above-mentioned steps forms a large-area raster pattern with particular plane or stereoptics diffraction effect.
A kind of record has the method for stereopsis effect, it is to utilize described space optics transposer to show the object image of various visual angles, utilize the described system control device described diffuser plate that stops the rotation simultaneously, can interfering light beam to obtain, adjust the adjustable combination of lenses of described focus simultaneously, with above-mentioned image projecting to unlimited distance or project to lens and the material stationary platform between described being focused on the image planes, and with from being guided and another coherent light bundle of coming is interfered each other by the described reference light projector with respect to described material stationary platform is rightabout, to form a small holographic element, carry out a series of various visual angles image of exposure successively repeatedly, to form the hologram image that finally has stereoscopic visual effect.
The method of the small concealed image that a kind of record is difficult to duplicate, it is to utilize the space optics transposer to show image or literal that desire is hidden, and utilize the adjustable combination of lenses of described focus that this image reduced projection is imaged onto described being focused on the image planes, the described diffuser plate of high speed rotating is to eliminate the light wave noise simultaneously, with the exposure of the optical strength of above-mentioned image on described optics photosensitive material face, with make non-naked eyes visual, be difficult to the false proof optical media that duplicated with traditional holographic applying Exposure mode.The method of a kind of device recording digit order number facies pattern holography, it is to utilize described sound equipment optics transposer, will by system and device calculated and digital gray level information convert to+power of 1 diffraction light beam, the depth with control etch luminous point field, and the restriction of the described pin hole light shield of process, become the point source of light of certain diameter, via described system control device described space optics transposer is closed simultaneously, and utilize the adjustable combination of lenses of described focus, with above-mentioned pin hole image focal imaging to described optics photosensitive material face, to expose into some digit order number facies pattern information, move described horizontal vertical direction transfer table again to next exposure position, integrated form digit order number facies pattern holographic information of record so goes round and begins again, in the overall process of record, described autofocus system is adjusted its upper-lower position at any time and is focused on on the one side to guarantee the pin hole image.
The present invention has the following advantages:
1. simple to operate, the present invention can form device with the composite optic element of single-step operation system, is different from the complicated multi-step system of traditional approach.
2. be easy to map function system or compound two kinds of modes of operation of while in making same diffraction grating, component in the hope of different-effect, need use the digital recording mode of single thunder laser beam as the making of kino hologram, the record of three-dimensional image is then carried out with the image projecting of spatial light modulator, different components is gathered in a diffraction grating, can significantly improve it and prevent the function of palming off, and can produce machinery easily and distinguish the diffraction grating of reading function, and according to this device and method anyone can make the hologram image of various different shapes easily, as three-dimensional holographic, the kino holography.
3. can very simply small pattern or written record be had solid or diffraction function grating field arbitrary portion in addition, or overlapping with it, and the optical characteristics of utilizing its exposure of can not fitting to duplicate increases substantially false proof characteristic.
4. the holographic element that the special reference light projector forms its each other and zero lap, can avoid the information between the holographic element to disturb, and not have the space between the adjacent element and significantly improve the vision quality of finished product.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail
Fig. 1 is each mechanical part synoptic diagram of the present invention
Fig. 2 is that computer is controlled the program flow diagram that each parts is finished photologging
Fig. 3 is the computer interface connection layout
Fig. 4 is digitized video recording mode figure
Fig. 5 is three-dimensional holographic recording mode figure
Fig. 6 is grating recording mode figure
Embodiment
See also a kind of optical media pen recorder with optics diffraction effect shown in Figure 1, its mechanism comprises: but jamming light source (laser) generator 1, level crossing 2, semi-permeable mirror 3 and 4, sound equipment optics transposer 5 (being called for short AOM), shadow shield 6, reflection mirror 7 and 8, pin hole light shield 9, diffuser plate 10, lens 11,1/2 wavelength plate 12, beam splitter 13,1/4 wavelength plate 14, space optics transposer 15 (being called for short SLM), the adjustable combination of lenses 16-18 of focus, be focused into image planes 19-A, optics photosensitive material face 19-B, autofocus system 20, light beam open and close valve 21-A, the reference light projector 22, material stationary platform 23, system's support 24, horizontal vertical direction transfer table 25-26, held rigid body 27, system control device 28.Wherein:
Sound equipment optics transposer 5 is called for short AOM, and AOM is meant that the density that utilizes ultrasound wave to come modifier intercrystalline body distributes, with having of forming that tortuosity ratio the changes device with the equal optical effect of grating.Its answer speed is about 10
9Inferior/second, can be used as the optical devices that high-speed signal transmits.
Space optics transposer 15 (be called for short SLM) is a kind of video display, and image is presented on the SLM, simultaneously with the laser beam illumination, via SLM reflection or the image that penetrates out the illumination light wavelength is arranged promptly, becomes the image that can be recorded in specific photosensitive material.Generally all has this kind function as LCD LCD or digital small EGD DMD.
Photosensitive material has following several can supply to utilize:
1. photoresistance
This kind material generally is used in the photomicrograph of the little circuit in emblem on the semi-conductor industry, also can be used to as light wave disturbance records material.As make holography, on light-resist plate, formation has the channel form interference stripes of fine sag and swell through chemical development after with the interference stripes exposure of object light and reference light.Or the characteristic that also can utilize its sensitization etch only writes down the amplitude message of certain pattern that is strong and weak light and shade distributes, and the present invention utilizes this function to write down diffraction grating and small literal or pattern).
2. UV-radiation-sensitive material
The present invention also can utilize ultraviolet laser, records the information on the UV-radiation-sensitive sheet, because of the resolution of institute's recorded information is directly proportional with the use optical wavelength, is higher than the resolution that general visual luminous energy reaches so utilize ultraviolet laser to write down.
Photosensitive silve halide material this be a kind of particle type photosensitive material, similar to general photosensitive sheet, the footpath is much smaller than general photosensitive sheet but its particle extends, thus its resolution can exceed 5-10 doubly about to write down highdensity interference fringe.The present invention can utilize the amplitude message of this kind stores record pattern, that is the distribution of strong and weak light and shade, with record diffraction grating and small literal or pattern.And it is three-dimensional holographic to write down the full visual angle of reflection-type integrated form.Its method is to utilize digital transmission or scan mode to be input into after the computer object at each visual angle series image, shows serial image one by one to SLM by computer, and utilizes the focus adjustable lens its image planes to be projected illusion face or the unlimited distance of 19-A.This image light wave with interfere in photosensitive silve halide material from the reference beam of the reference light projector, to form a holographic element, and mobile and horizontal vertical direction transfer table 25-26, carry out this step repeatedly, the full visual angle of final formation one reflection-type integrated form is three-dimensional holographic, and a virtual comprehensive visual angle stereopsis is provided.General this kind material need have 10-25 thickness (except that transparent support).
4. high-molecular photosensitive material
This kind material is to utilize low molecular photoelectric effect to produce and build bridge to react formation locality producing high-molecular and have the periodicity variable density to reach the effect of diffraction light wave.The present invention can utilize the full visual angle of this kind stores record reflection-type integrated form three-dimensional holographic, and its recording mode as described above.
Its computer controller with the situation that is connected of parts is:
See through data such as the interface coupler transmission signals of computer and image by the formula software of writing in advance, to control the running of total system fully, wherein by pulse of serial port transmission to open or to close the CD-ROM drive motor of light beam open and close valve 21-A.
In like manner, respectively via serial port 3 and 4 output pulses with the adjustment CD-ROM drive motor of opening or closing the adjustable combination of lenses 16,17 of focus respectively and the CD-ROM drive motor of diffuser plate 10, and give the AOM5 controller via serial port 2 output numeric type data, to determine its open and-shut mode, and carry the numeric type data to give the drive unit of horizontal vertical direction transfer table via serial port 5, drive photosensitive material to the record position of being answered corresponding to image to move quantitative displacement.And exporting a series of images via parallel port or interface card is presented on the SLM.
Its connection interactive relationship of mainly forming mechanism is as follows:
By semi-permeable mirror 4, sound equipment optics transposer 5, shadow shield 6, reflect flat mirror 7 and 8, pin hole light shield 9, diffuser plate 10, lens 11,1/2 wavelength plate 12, beam splitter 13,1/4 wavelength plate 14, space optics transposer 15, the system that optics parts such as the adjustable combination of lenses 16-18 of focus are combined is positioned over one and is held in the rigid body 27, to maintain its ad hoc structure relation each other in the operation, being held rigid body 27 is a kind of supports, and the relative position of the element mechanism of containing owing to the inside is subjected to rigorous control needs a total support of keeping this relative position.Held rigid body 27 and be connected in to have and move up and down and the automatic autofocus system 20 of focusing function, supported the motion of autofocus systems 20 by system's support 24.
Can be fixed position device in disturbing light source (laser) generator 1, level crossing 2, semi-permeable mirror 3, system's support 24, system control device 28, the reference light projector 22 etc., horizontal vertical direction transfer table 25-26 drives the position that material stationary platform 23 moves to institute's desire exposure.
The light beam that is produced by coherent light source 1 is divided into the twice light beam by semi-permeable mirror 3 after level crossing 2 reflections; Its reflected light is a reference beam, and it directly advances light and is divided into the twice light beam by semi-permeable mirror 4 again, and it directly advances the light source of light beam as the digital recording function, and its folded light beam provides mains lighting supply for space optics transposer 15.
The light beam that directly advances through semi-permeable mirror 4 is subjected to the beam split of sound equipment optics transposer 5, be divided into directly advance light beam ,+1 diffraction light beam and-1 diffraction light beam.Wherein directly advance light beam and periodical or 4 diffraction light beams are interdicted by shadow shield 6, do not interdicted+1 or-1 light beam then arrives pin hole light shields 9 through reflecting flat mirror 7,8, the imaging point picture of pin hole light shield 9 by by combination of lenses 16-18 focal imaging on optics photosensitive material face 19-B.The optical strength of this some picture is subjected to by the numeral of computer output and 5 controls of sound equipment optics transposer, to form the exposure station of different depth etches.After the exposure record, handle so repeatedly, can obtain the digital hologram of optics diffraction via video picture.
By semi-permeable mirror 4 beam reflected see through diffuser plate 10 with beam spread after 1/2 wavelength plate and 1/4 wavelength plate 14 are adjusted the polarization direction of diffusion light waves.The light wave face focal imaging that lens 11 diffuse out diffuser plate 10 is on spatial light modulator 15, equal indirect image and be transformed into a diffusion light corrugated spatial light modulator 15, in order to another combination of lenses 16-18 again with this light wave imaging near photosensitive material face 19-B or its.Be reflected behind the image of the light wave lighting space photomodulator 15 of this polarisation, behind the polarisation of 1/4 wavelength plate 14, reflexed to combination of lenses 16-18 direction again by polarisation spectroscope 13.This image so far be transformed into can disturb light wave and through centre that lens focus is imaged on optics photosensitive material face 19-B and combination of lenses 16-18 by lens position.
On the other hand, the light beam of being told by semi-permeable mirror 3 21 reflexes on the optics photosensitive material face 19-B through reference light catoptron 22, overlaps on the optics photosensitive material face 19-B with aforesaid image strip.This overlapping step of exposure forms a holographic element with the interference fringe record of two light beams, and numerous holographic element of record form the integrated form holography of dot matrix so repeatedly.Material after this exposure can be observed the omnibearing stereo image of horizontal vertical two direction parallaxes under the illuminating ray that suitably the angle people penetrates after suitable video picture is handled.
See also Fig. 2-Fig. 6.The invention provides three kinds of different recording modes, after being described in respectively.
At first computer is done some simple and necessary processing to original portrait, and as for the original portrait of desiring to be recorded as the numeric type image, then in addition digital computation becomes the numeric type data; Be recorded as the three-dimensional holographic original parallax portrait of integrated form for desiring, then handle through portraits such as some distortion covers or color separations; Original portrait for desiring to be recorded as the diffraction grating image, then calculate the raster pattern that it should write down according to following formula:
The grating intensity distribution (x, y)=2R
2O
2Cos[Φ r-Φ o]
Φr＝2π/λ[sinΦrx+sinΦry]
Φo＝2π/λ[sinΦox+sinΦoy]
Wherein: λ-imaginary observation illumination light wavelength,
Φ rx, Φ ry-are respectively that imagination is observed the angle of illumination light with respect to the X-axis Y-axis,
Φ ox, Φ o-are respectively the angle of imaginary object light with respect to the X-axis Y-axis,
R, O-are respectively the light intensities of reference light and object light.
As select the grating recording mode, then, control each parts through its interface by computer by computer output data.At first, close light beam open and close valve 21-A, and rotate diffuser plate 10, then with SLM face focal imaging to the photosensitive material face, show a raster pattern in SLM this moment, this pattern demonstration time is the time shutter, shows a complete black developing subsequently, exposure finishes.Mobile and horizontal vertical direction transfer table 25-26 returns next desire record raster pattern of demonstration in the program of SLM then to next exposure position subsequently, finishes until exposure.
As the three-dimensional holographic recording mode of a choice set accepted way of doing sth, then at first computer is controlled diffuser plates 10 in halted state via serial port 4, and regulate SLM face focal imaging to the 19-A face, show that then parallax portrait is on the SLM face, open simultaneously light beam open and close valve 21-A, make imaging on reference light and the aforesaid 19-A face and be projected to optical interference on the material face, to form a holographic element, judge whether then to determine shutdown system or continue exposure for last holographic element, if continuation exposes then horizontal vertical direction transfer table 25-26 is moved to next exposure position, and return next parallax of execution demonstration and draw a portrait to the step of SLM, finish up to whole holographic element exposures.
As what select through the record function is digital recording mode, then at first stop diffuser plate 10, demonstrate a complete black developing in SLM, and close light beam open and close valve 21-A, some image with pin hole 9 sees through adjusting combination of lenses 16 then, 17, it is focused on the 19-B face, then the numerical digit by computer output decides AOM5 diffraction+1 and-1, the diffraction light beam to have that it's too late strong and weak, this step is equivalent to output one digit information of accompanying drawing 2, this+having or not of 1 light beam determined having or not of exposure station on the photosensitive material, and+power of 1 light beam determined the concavo-convex depth of exposure station on the photosensitive material, so can write down numeric type information.Treat mobile and horizontal vertical direction transfer table 25-26 to next exposure station, return retry line output numerical information and answered corresponding light beam strong and weak and have or not to determine next exposure station to AOM5.
A kind of grating recording method with plane or stereoptics diffraction effect, the steps include: to utilize space optics transposer 15 to show the optical strength distribution image of gained as calculated, and the diffuser plate 10 that utilizes high speed rotating can disturb light beam to change non-coherent light bundle into, and illumination is on the image of space optics transposer 15; The distribution of amplitudes of its image is again via the adjustable combination of lenses 16-18 of focus, dwindle with suitable multiplying power, projection imaging is to optics photosensitive material face 19-B, and utilize high speed rotating diffuser plate 10 to obtain the light wave noise of moment different distributions, in between certain certain exposure period, addition average effect because of the light wave noise intensity of different distributions, the certainty light wave noise that attenuating is produced because of the coherent light source, the small light beam element set that writes down via above-mentioned steps forms a large-area raster pattern with particular plane or stereoptics diffraction effect.
A kind of method that has the stereopsis effect according to the described device recording of Fig. 1, the steps include: to utilize space optics transposer 15 to show the object image of various visual angles, utilize system control device 28 diffuser plate 10 that stops the rotation simultaneously, can interfering light beam to obtain, adjust the adjustable combination of lenses 16-18 of focus simultaneously, with above-mentioned image projecting to unlimited distance or project to the lens companion and material stationary platform 23 between be focused on the image planes 19-A, and disturb each other with another coherent light bundle that is come from guiding by the reference light projector 22 with respect to the reverse direction of material stationary platform 23, to form a small holographic element, carry out a series of various visual angles image of exposure successively repeatedly, to form the hologram image that finally has stereoscopic visual effect.
A kind of method of the small concealed image that is difficult to duplicate according to the described device recording of Fig. 1, the steps include: to utilize space optics transposer 15 to show image or the literal that desire is hidden, and utilize the adjustable combination of lenses 16-18 of focus that this image reduced projection is imaged onto to be focused on the image planes 19-A, high speed rotating diffuser plate 10 is to eliminate the light wave noise simultaneously, with the exposure of the optical strength of above-mentioned image on optics photosensitive material face 19-B, with make non-naked eyes visual, be difficult to the false proof optical media that duplicated with traditional holographic applying Exposure mode.
This concealed image or literal, Yin Ben does not add the grating message of any diffraction function when being recorded, so do not have a diffraction optics function of specific direction.During with visual inspection, it only presents the point of a dropping fire; When duplicating with the holographic exposure of fitting of tradition, because of its dropping fire light wave becomes object light, can hide the sharpness of destroying original image or literal and only present a kind of noise information on the optical media that is replicated, via magnifier or microscopic examination, the result can differentiate out.The about 2-6um of the reduced one-tenth of its image or literal, so must see through about microscope more than 200 times can see, in case fitted exposure when duplicating by the counterfeiter, meaningless noise only occurs on the material piece that is replicated and this emblem snapshot of oneself picture or literal can't be duplicated.
A kind of method according to the holography of the described device recording digit order number of Fig. 1 facies pattern, the steps include: to utilize sound equipment optics transposer 5, will by system and device 28 calculated and digital gray level information convert to+power of 1 diffraction light beam, the depth with control etch luminous point field, and through the restriction of needle passing hole light shield 9, become the point source of light of certain diameter, via system control device 28 space optics transposer 15 is closed simultaneously, and utilize the adjustable combination of lenses 16-18 of focus, with above-mentioned pin hole image focal imaging to optics photosensitive material face 19-B, to expose into some digit order number facies pattern information, mobile and horizontal vertical direction transfer table 25 again, 26 to next exposure position, integrated form digit order number facies pattern holographic information of record so goes round and begins again, in the overall process of record, autofocus system is adjusted its upper-lower position at any time and is focused on on the one side to guarantee the pin hole image.(with reference to the traditional fabrication method of appended data relevant for the holography of digit order number facies pattern.
The present invention is with different visual effects, as have the raster pattern of plane colour switching effect or a holographic information with stereoeffect, with have the different exposure functions that prevent to fit, as concealed pattern or small literal, or the small color of optics of digit order number facies pattern holography etc., see through the meticulous suitable configuration of system control device, be recorded on the same optical media, can be to form a kind of special having concurrently according to the optical media of the multiple anti-fake of visual differentiation and machine interpretable function.
Claims (5)
1. diffraction grating recorder is characterized in that: it comprises following main composition mechanism:
Can be in disturbing light source generator (1), sound equipment optics transposer (5), diffuser plate (10), pin hole light shield (9), 1/2 wavelength plate (12), 1/4 wavelength plate (14), beam splitter (13), space optics transposer (15), the adjustable combination of lenses of focus (16-18), autofocus system (20), material stationary platform (23), horizontal vertical direction transfer table (25-26), the reference light projector (22), system control device (28), light beam open and close valve (21-A);
Its connection interactive relationship of mainly forming mechanism is as follows:
Described system control device (28) is connected with described light beam open and close valve (21-A), sound equipment optics transposer (5), diffuser plate (10), space optics transposer (15), the adjustable combination of lenses of focus (16-18), horizontal vertical direction transfer table (25-26) control gear through its interface, plan as a whole control running and calculating, handle the image and the numerical information of required output record, have special optical diffraction function or have the purpose that to duplicate the optical media of counterfeit function with the exposure of fitting to reach record;
By described sound equipment optics transposer (5), diffuser plate (10), pin hole light shield (9), 1/2 wavelength plate (12), 1/4 wavelength plate (14), beam splitter (13), space optics transposer (15), the system that the adjustable combination of lenses of focus (16-18) combines is positioned over one and is held in the rigid body (27), to maintain its ad hoc structure relation each other in the operation, this is held rigid body (27) and is connected in to have and moves up and down and the automatic described autofocus system (20) of focusing function, is supported the motion of autofocus system (20) by system's support (24);
Describedly can be fixed position device in disturbing light source generator (1), system's support (24), system control device (28), the reference light projector (22), described horizontal vertical direction transfer table (25-26) drives the position that material stationary platform (23) moves to institute's desire exposure.
2. diffraction grating recording method with plane or stereoptics diffraction effect, it is characterized in that: utilize described space optics transposer (15) to show the optical strength distribution image of gained as calculated, and utilize the described diffuser plate (10) of high speed rotating to change the coherent light bundle into the non-light beam that disturbs, illumination is on the image of described space optics transposer (15), the distribution of amplitudes of its image is again via the adjustable combination of lenses of described focus (16-18), dwindle with suitable multiplying power, projection imaging is to described optics photosensitive material face (19-B), and the described diffuser plate (10) that utilizes high speed rotating is to obtain the light wave noise of moment different distributions, in between certain certain exposure period, addition average effect because of the light wave noise intensity of different distributions, but lower because of the certainty light wave noise that jamming light source produced, the small light beam element set that writes down via above-mentioned steps forms a large-area raster pattern with particular plane or stereoptics diffraction effect.
3. method that has the stereopsis effect according to the described device recording of claim 1, it is characterized in that: utilize described space optics transposer (15) to show the object image of various visual angles, utilize described system control device (28) the described diffuser plate (10) that stops the rotation simultaneously, can interfering light beam to obtain, adjust the adjustable combination of lenses of described focus (16-18) simultaneously, with above-mentioned image projecting to unlimited distance or project to lens and the material stationary platform between described being focused on the image planes (19-A), and with from being guided and another coherent light bundle of coming is interfered each other by the described reference light projector (22) with respect to described material stationary platform (23) is rightabout, to form a small holographic element, carry out a series of various visual angles image of exposure successively repeatedly, to form the hologram image that finally has stereoscopic visual effect.
4. the method for a small concealed image that is difficult to duplicate according to the described device recording of claim 1, it is characterized in that: the described space optics transposer (15) that utilizes shows image or literal that desire is hidden, and utilize the adjustable combination of lenses of described focus (16-18) that this image reduced projection is imaged onto described being focused on the image planes (19-A), the described diffuser plate of high speed rotating (10) is to eliminate the light wave noise simultaneously, the optical strength of above-mentioned image is exposed on described optics photosensitive material face (19-B), visual to make non-naked eyes, be difficult to the false proof optical media that duplicated with traditional holographic applying Exposure mode.
5. method according to the holography of the described device recording digit order number of claim 1 facies pattern, it is characterized in that: utilize described sound equipment optics transposer (15), will by system and device calculated and digital gray level information convert to+power of 1 diffraction light beam, the depth with control etch luminous point field, and the restriction of the described pin hole light shield of process (9), become the point source of light of certain diameter, via described system control device (28) described space optics transposer (15) is closed simultaneously, and utilize the adjustable combination of lenses of described focus (16-18), above-mentioned pin hole image focal imaging is arrived on the described optics photosensitive material face (19-B), to expose into some digit order number facies pattern information, move described horizontal vertical direction transfer table (25-26) again to next exposure position, integrated form digit order number facies pattern holographic information of record so goes round and begins again, in the overall process of record, described autofocus system (20) is adjusted its upper-lower position at any time and is focused on on the one side to guarantee the pin hole image.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 99122227 CN1132026C (en) | 1998-11-04 | 1999-11-03 | Diffraction grating recorder and optical recording method of planar or stereo acoustics |
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| CN98124663 | 1998-11-04 | ||
| CN98124663.X | 1998-11-04 | ||
| CN 99122227 CN1132026C (en) | 1998-11-04 | 1999-11-03 | Diffraction grating recorder and optical recording method of planar or stereo acoustics |
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| CN1258850A CN1258850A (en) | 2000-07-05 |
| CN1132026C true CN1132026C (en) | 2003-12-24 |
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| CN102737262B (en) * | 2011-04-15 | 2015-07-29 | 华锦光电科技股份有限公司 | Microstructure with diffractive grating points, film material and method for forming the film material |
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1999
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