CN103454778B - Bore hole 3D optical projection system - Google Patents
Bore hole 3D optical projection system Download PDFInfo
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- CN103454778B CN103454778B CN201310419312.1A CN201310419312A CN103454778B CN 103454778 B CN103454778 B CN 103454778B CN 201310419312 A CN201310419312 A CN 201310419312A CN 103454778 B CN103454778 B CN 103454778B
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Abstract
The present invention relates to bore hole 3D optical projection system, comprise a 3D projector and projection screen, 3D projector comprises several projection lens, the film source that 3D projector plays adopts the shooting of 3D photographic equipment or utilizes the process of 3D software, projection screen adopts the directional scattering projection screen of pseudoanisotropy, structure is simple, and cost is low, low to the requirement of playing hardware, film source comprises several sub-pieces sources, sub-pieces source between row and row arranges in form of going forward one by one, the capable n of m that is arranged as in sub-pieces source arranges, distance of going forward one by one between the sub-pieces source of adjacent rows is the 1/m grown crosswise in single sub-pieces source, projection lens and sub-pieces source one_to_one corresponding, projection lens is by sub-pieces source overlapping projection or upper and lower both sides overlap on projection screen, laterally go forward one by one successively in proportion and arrange projection in left and right, it is large that the 3D image presented has observation angle, resolution is high, crosstalk degree is little, the advantages such as stereoeffect is strong, can many people watch simultaneously, really realize wide-angle bore hole 3D to move/the presenting of static image.
Description
Technical field
The present invention relates to a kind of 3D optical projection system, be applicable to wide-angle under bore hole state, multi-faceted, many people observe simultaneously, specifically, relate to a kind of bore hole 3D optical projection system.
Background technology
In daily life, people utilize eyes to recognize three-dimensional object, when recognizing certain object, owing to having certain distance between eyes, the picture that this segment distance makes two, left and right enter right and left eyes respectively when observing object is different, comprise angle, perspective all has difference, reflection will produce " stereoscopic vision " in the brain, two picture compositions together, just stereoscopic sensation is produced, thus can the context of judgment object, the difference of the picture that this observed object is formed on the right and left eyes retina of people is exactly binocular parallax, the formation of generation to stereoscopic vision of parallax plays very important effect.
At present, 3D display technique mainly comprises the bore hole formula of hyperphoria with fixed eyeballs mirror and not hyperphoria with fixed eyeballs mirror, hyperphoria with fixed eyeballs mirror 3D display technique development very ripe, but us can not be made to break away from the constraint of Special spectacles, this makes its range of application and comfort all make a discount, and many 3D display techniques can allow long experiencer have the nauseating sensation such as dizzy, the 3D display technique of bore hole formula is owing to wearing glasses, receive the concern of more and more people, become the developing direction of following 3D display technique, thus the 3D display technique of bore hole formula becomes the focus of current research.
Identical with the principle of the three-dimensional object of human eye observation, when wearing 3D eyes viewing 3D image, image informations different for left and right is just inputted right and left eyes by 3D eyeglass to when close eyes by picture signal respectively that send from screen, so there is no the problem of observation angle when wearing 3D glasses viewing 3D image, but when identical film source is used for main flow bore hole 3D observation, the problem of observation angle is just particularly evident, that is at present the bore hole formula 3D display device of main flow can only single angle or just can watch the good 3D image of effect in less angular range, also just mean that spectators want to see that 3D image must lock position more clearly, keep picture relative with the position of head fixing, be slightly offset and just there will be crosstalk phenomenon or do not observe 3D effect, the degree of freedom of bore hole 3D video image evaluation is caused greatly to reduce, have a strong impact on the viewing effect of 3D image.
In order to solve the problem of viewing angle, scientific research personnel is had to provide a kind of human eye orientation recognition system that utilizes in conjunction with the real-time calculating adjusting gear of software, described device is adopted to catch the eyes of viewing person and the calculating carrying out picture regulates display in real time, but adopt described device only can capture the eyes of a viewing person, many people viewing simultaneously cannot be realized, and it is huge to run computer-chronograph operational data, from capture seizure and complete again to adjustment display, certain delay will inevitably be caused.
The appearance of lens pillar technology achieves the lifting among a small circle of 3D image observation angle, described lens pillar technology be instigate liquid crystal display be positioned on the focal plane of lens as plane, and post lens pitch is the positive integer times of screen pixels width, the pixel of the image like this below each post lens is divided into several sub-pixel, such lens just can with different direction projections each sub-pixel, so eyes are from different angles viewing display screen, just see different sub-pixels, and then the observation angle scope improving 3D image among a small circle, many people viewing simultaneously can be realized, as shown in Figure 1, bore hole 3D screen comprises LCD screen 1, the front of LCD screen 1 is provided with column mirror grating 2, during observation, when the left and right spectral image that screen sends enters left eye 3 and right eye 4 just respectively, 3D effect is best.Presenting of 9 anaglyphs has been achieved on the market at present by this technology, 9 sub-pixels are comprised in the pitch of i.e. each post mirror, if set the observation angle of single anaglyph as 2 °, then final observation angle is 18 °, when departing from this angular range a little, just there will be right and left eyes picture and put upside down or crosstalk.And this technology will be realized, first the LCD screen of ultrahigh resolution is required, then require that column mirror grating is accurately combined with the height of screen pixels, sub-pixel is more, the observation angle of stereoscopic picture plane is larger, then picture pixel is lower, and this is also the essence limiting this technical development, the making of this technology film source and data volume are also huge as can be seen here, cannot realize wide-angle bore hole 3D effect truly.
The principle of slit grating formula bore hole 3D technology is with column mirror grating formula bore hole 3D technology, as shown in Figure 2, bore hole 3D screen comprises LCD screen 1, the front of LCD screen 1 is provided with slit grating 5, during observation, when the left and right spectral image that screen sends enters left eye 3 and right eye 4 just respectively, 3D effect is best, but when departing from this angular range a little, just there will be right and left eyes picture and put upside down or crosstalk.
Adopt the frame crosstalk phenomenon of adding the bore hole 3D display device of lens pillar technology or slit grating technology on liquid crystal board comparatively serious; namely spectators often can observe that when watching 3D image " ghost image " or " jumping picture " phenomenon appears in 3D picture, has a strong impact on the viewing comfort level of viewing person.
In order to overcome the above problems, Chinese patent CN102445762B provides a kind of bore hole 3D projection screen and bore hole 3D optical projection system, it discloses a kind of bore hole 3D front projection screen, a kind of bore hole 3D rear projection screen and a kind of bore hole 3D optical projection system, described front projection screen comprises: surperficial biconvex microtrabeculae lens board and a diffuse reflector; The both sides of described surperficial biconvex microtrabeculae lens board are all rearranged by multiple row dimpling post lens horizontal close, equal and the one_to_one corresponding of the dimpling post lens numbers of described surperficial biconvex microtrabeculae lens board both sides, each dimpling post lens are all in vertical strip and pitch is equal, and described pitch is that projector is transmitted to the positive integer of the image pixel width on projection screen doubly; Described diffuse reflector is positioned on the back focal plane of described surperficial biconvex microtrabeculae lens board.Described rear projection screen is identical with described front projection screen principle.Described optical projection system adopts multiple stage array of rear-projectors, and when described array of rear-projectors is m × n, namely, n row projector capable by m forms, and m is necessary for the integer being more than or equal to 1, and n is necessary for the even number being more than or equal to 2.Described optical projection system adopts the mode of array of rear-projectors to provide projection source, reach the viewing effect of wide-angle, need to use multiple stage projector, drive multiple stage projector to play a three-dimensional picture or stereopsis simultaneously, the hardware needed is all very high with the software requirement matched, production cost is high, and limit the columns of projected array, post lens pitch is the positive integer times of projected picture pixel, require that the delicate relationship of launching picture pixel and cylindrical lens array equally, and projector spacing is double vision distance, just limit the fluency of stereoscopic picture plane, if expand observation angle by this technology namely there will be larger jumping picture and crosstalk phenomenon, finally be difficult to the wide-angle bore hole viewing realized truly.
Summary of the invention
The technical problem to be solved in the present invention is for above deficiency, provide a kind of do not need to help equipment by anaglyph spectacles or other 3D viewings paving and realize wide-angle, multi-faceted, many people watch simultaneously, crosstalk is minimum, film source makes simple and that hardware requirement is low bore hole 3D optical projection system.
For solving above technical matters, the present invention by the following technical solutions: bore hole 3D optical projection system, is characterized in that: the projection screen that described optical projection system comprises a 3D projector and is arranged in projecting light path of 3D projector;
Described 3D projector comprises the LCDs for playing film source, and the projecting light path between LCDs and projection screen is provided with projection lens's head group.
A kind of prioritization scheme, described film source comprises several sub-pieces sources;
Described projection lens head group comprises for several projection lens by the overlapping projection on projection screen of sub-pieces source.
Another kind of prioritization scheme, the quantity of described projection lens is consistent with the quantity in sub-pieces source;
Described projection lens and sub-pieces source one_to_one corresponding.
Another prioritization scheme, described sub-pieces source is arranged in m capable n row, m be more than or equal to 1 positive integer, n be greater than 1 positive integer;
Sub-pieces source between described row and row arranges in form of going forward one by one;
Distance of going forward one by one between the sub-pieces source of described adjacent rows is the 1/m grown crosswise in single sub-pieces source.
Further prioritization scheme, described sub-pieces source, meets following relational expression between film source and LCDs:
a×n + a×(m-1)/m = x
b×n = y
x=s
y=d
In formula: the width in the single sub-pieces source of a-, the height in the single sub-pieces source of b-, the width of x-film source, the height of y-film source, the width of the effective display section of s-LCDs, the height of the effective display section of d-LCDs.
Further prioritization scheme, described adjacent rows be progressive relationship adjacent two projection lens central points between horizontal range be less than distance between human eye double vision.
Further prioritization scheme, described projection screen comprises column mirror grating;
Described column mirror grating adopts semi-convex Lenticular screen, and the side, focal plane of semi-convex Lenticular screen is provided with fluoresent coating;
Described fluoresent coating is directly combined with column mirror grating.
A kind of prioritization scheme, described projection screen comprises video screen, and fluoroscopic display surface is provided with the micro-window shutter that can shake at a high speed.
Another kind of prioritization scheme, described projection screen comprises video screen, and fluoroscopic periphery is provided with can the crawler type slit grating band of high-speed rotation.
Another prioritization scheme, described 3D projector also comprises light fixture;
Described light fixture is arranged on the rear of LCDs;
The light path of described light fixture is provided with dodging device.
Further prioritization scheme, described LCDs is the mosaic screen of whole screen or more than two pieces.
After the present invention adopts above technical scheme, compared with prior art, have the following advantages: the projection screen comprising 3D projector and be arranged in projecting light path of 3D projector, 3D projector is provided with one, 3D projector comprises LCDs, projecting light path between LCDs and projection screen is provided with projection lens's head group, projection lens's head group comprises several projection lens, the 3D film source that the film source that 3D projector plays can adopt point-of-view shot technology to take, also common film source can be used after image software layering is synthesized again, projection screen adopts the directional scattering projection screen of pseudoanisotropy, imaging effect is good, structure is simple, cost is low, film source makes simple, low to the requirement of playing hardware,
Described film source comprises several sub-pieces sources, sub-pieces source between row and row arranges in form of going forward one by one, the capable n of m that is arranged as in sub-pieces source arranges, distance of going forward one by one between the sub-pieces source of adjacent rows is the 1/m grown crosswise in single sub-pieces source, projection lens and sub-pieces source one_to_one corresponding, level interval between adjacent two projection lens central points is less than the distance between human eye double vision, projection lens is by the overlapping projection or vertically overlapping on projection screen of corresponding sub-pieces source, the horizontal arrangement of going forward one by one successively in proportion in left and right, drop shadow effect is good, the Observable angle of the 3D image projected is large, can many people watch simultaneously, crosstalk degree is minimum, stereoscopic views effect is strong, real projection form realizes wide-angle bore hole 3D to be moved/the presenting of static image.
Below in conjunction with drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of prior art center pillar mirror raster pattern bore hole 3D screen;
Accompanying drawing 2 is structural representations of slit grating formula bore hole 3D screen in prior art;
Accompanying drawing 3 is structural representations of bore hole 3D optical projection system in the embodiment of the present invention;
Accompanying drawing 4 is projection theory schematic diagram of bore hole 3D optical projection system in the embodiment of the present invention;
Accompanying drawing 5 is arrangement mode schematic diagram of embodiment of the present invention neutron film source;
Accompanying drawing 6 is overlapping perspective view of vertical direction in the embodiment of the present invention;
Accompanying drawing 7 is structural representations of projection screen in the embodiment of the present invention 1;
Accompanying drawing 8 is displaying principle schematic diagram of projection screen in the embodiment of the present invention 1;
Accompanying drawing 9 is structural representations of projection screen in the embodiment of the present invention 2;
Accompanying drawing 10 is structural representations of projection screen in the embodiment of the present invention 3;
In figure,
1-LCD screen, 2-column mirror grating, 3-left eye, 4-right eye, 5-slit grating, 6-3D projector, 7-projection screen, 8-housing, 9-LCDs, 10-projection lens head group, 11-light fixture, 12-plays hardware, 13-projection signal light, 14-3D image visual angle, 15-sub-pieces source, 16-drives runner, 17-connecting rod, 18-shifting shaft, 19-shifting shaft slide rail, the micro-blade of louver window of 20-, 21-blade of louver window axis, 22-driving wheel, 23-crawler type slit grating band, 24-fluoresent coating, 25-video screen, 26-stirs blade, 27-reference light path, 28-sub-pieces source reference projection, 29-reference path, 30-projection lens, the overlapping projecting light path of 31-, 32-sub-pieces source projects underlapped part.
Embodiment
Embodiment 1, as shown in Figure 3, bore hole 3D optical projection system, comprises the 3D projector 6 for playing film source, the projection screen 7 be arranged in projecting light path of 3D projector 6.
Described 3D projector 6 comprises housing 8, one end of described housing 8 has opening, the openend of described housing 8 is towards projection screen 7, LCDs 9 is provided with in housing 8, described LCDs 9 can be the mosaic screen that whole screen also can be more than two pieces, play same film source, the projecting light path of LCDs 9 is arranged with projection lens's head group 10 in parallel, projection lens's head group 10 comprises several projection lens 30 regularly arranged, for realizing film source overlapping projection on projection screen 7, projection lens's head group 10 is arranged on the openend of housing 8, light fixture 11 is provided with in the housing 8 at LCDs 9 rear, the light that described light fixture 11 sends is common light, described light fixture 11 can adopt white light LEDs or Metal halogen lamp, described light fixture 11 can also add the dodging devices such as Fresnel lens, described light fixture 11 is for improving the backlight illumination of LCDs 9, and then improve drop shadow effect, described LCDs 9 is electrically connected with plays hardware 12, described broadcasting hardware 12 can be microcomputer, also can be player, as long as described broadcasting hardware 12 can realize driving LCDs 9 to play film source.
As shown in Figure 4, the picture that LCDs 9 is play is projected to projection screen 7 through projection lens's head group 10, in figure, projection signal light 13 gives a sample of the projection path being projected to projection screen 7 two ends, the 3D rendering be projected on projection screen 7 reflects to form 3D rendering visible angle 14 through projection screen 7 again, described 3D rendering visible angle 14 refers to that being positioned at this angular regions observation picture can produce stereoscopic sensation, namely the parallax sequence image that the distance between observer's eyes can disperse out across projection screen 7, distance in animation between adjacent or close two width figure, such observer is when in visual range, left-right and front-back moves, enter the anaglyph that the picture of eyes is always different, namely stereopsis is defined.
Described film source to be arranged according to certain forms by the sequence of pictures of multi-angled shooting or animation sequence and is formed, the film source of an overall format is made up of several sub-pieces sources 15, LCDs 9 is play, projection lens's head group 10 is by sub-pieces source 15 completely overlapping projection or vertically overlapping on projection screen 7, horizontal arrangement of going forward one by one successively in proportion, the scope of described 3D rendering visible angle 14 is relevant with the specification of LCDs 9, the quantity in sub-pieces source 15 is also relevant with the specification of LCDs 9, the width of LCDs 9 is wider, then the width of film source is wider, the quantity in sub-pieces source 15 is more, 3D rendering visible angle 14 is larger, namely bore hole 3D Observable angle is larger, the resolution of the higher then final 3D image formed of resolution of LCD screen is higher, the specification of the quality and quantity fluid,matching crystal display screen 9 in sub-pieces source 15 determines the quality of viewing effect, the i.e. size of viewing angle and the degree of ocular comfort.
The sequence in described sub-pieces source 15 uses multiple/camera installation (comprising the virtual video camera in modeling software) of taking the photograph form the mean value (about about 5 °) of stereopsis according to being slightly less than human eye or equaling this angle or slightly larger than this angle, subject or scenery simultaneously or successively shooting are formed, after completing the collecting work in sub-pieces source 15, bundle film source 15 carries out according to the specification of LCDs 9 picture or the video file that arrangement accordingly generates the bore hole 3D optical projection system broadcasting watched for wide-angle in postproduction of movies software again, collection and the Software for producing in described sub-pieces source 15 are known technology, no longer elaborate at this.
As shown in Figure 5, the quantity in sub-pieces source 15 is m × n, namely the capable n of m that is arranged as in sub-pieces source 15 arranges, m be more than or equal to 1 positive integer, n be greater than 1 positive integer, sub-pieces source 15 between row and row arranges in form of going forward one by one, and the distance of going forward one by one between the sub-pieces source 15 of adjacent rows is the 1/m grown crosswise in single sub-pieces source 15, the quantity in sub-pieces source 15 is consistent with the quantity of projection lens 30 in projection lens head group 10, sub-pieces source 15 and projection lens 30 one_to_one corresponding, projection lens 30 is by the completely overlapping projection or vertically overlapping on projection screen 7 of corresponding sub-pieces source 15, the horizontal arrangement of going forward one by one successively in proportion in left and right.
As shown in Figure 6, be projected as example be described with sub-pieces source 15 vertical direction (i.e. projection screen 7 short transverse) overlap on projection screen 7, first the central point O ' of each projection lens 30 is adjusted on same level line with the central point O in corresponding sub-pieces source 15, the i.e. central point O ' of projection lens 30 and the plane of the line of the central point O in corresponding sub-pieces source 15 perpendicular to place, sub-pieces source 15, the sub-pieces source 15 generally within film source central spot is selected to be benchmark, illustrate, arrange if the arrangement mode in sub-pieces source 15 is 3 row 5, then select to be positioned at the second tertial sub-pieces source 15 of row as benchmark, arrange if the arrangement mode in sub-pieces source 15 is 4 row 5, then select be positioned at the second row the 3rd arrange or the tertial sub-pieces source 15 of the third line as benchmark, in like manner, arrange if the arrangement mode in sub-pieces source 15 is 4 row 8, then select to be positioned at the second row the 4th row, second row the 5th arranges, the sub-pieces source 15 that the third line the 4th arranges or the third line the 5th arranges is as benchmark, be reference light path 27 as the sub-pieces source 15 of benchmark through the projecting light path of the projection lens 30 of correspondence, the image being projected to projection screen 7 through the projection lens 30 of correspondence as the sub-pieces source 15 of benchmark is sub-pieces source reference projection 28, the height setting single sub-pieces source 15 is b, the height of sub-pieces source reference projection 28 is b ', the height in single sub-pieces source 15 is known when making, and the height of sub-pieces source reference projection 28 can directly obtain through measurement, then projective amplification multiple the Q=b '/b in sub-pieces source 15, other sub-pieces sources 15 outside benchmark obtain the projection of sub-pieces source reference through corresponding projection lens 30 along reference path 29, the projection of sub-pieces source reference and the underlapped part of sub-pieces source reference projection 28 are that sub-pieces source projects underlapped part 32, the project height of underlapped part 32 of setting sub-pieces source is z, then in order to obtain completely overlapping projection in the vertical direction, corresponding projection lens 30 needs the distance of adjustment to be z/Q, according to above-mentioned method of adjustment, the position of each projection lens 30 can be adjusted one by one, the projection lens 30 of sub-pieces source 15 after corresponding adjustment can obtain the projection completely overlapping with sub-pieces source reference projection 28 vertical direction along overlapping projecting light path 31.
In like manner, according to the relative position of above-mentioned adjustment principle also adjustable sub-pieces source 15 with homolographic projection camera lens 30 horizontal direction, to obtain the completely overlapping projection of horizontal direction (i.e. projection screen 7 Width), or obtain the projection of arrangement of laterally going forward one by one successively in proportion as required, again repeat no more.
For convenience of description, in diagram neutron film source 15, the numeral of mark is the sequence number in sub-pieces source 15, in order to form effective bore hole 3D picture, adjacent two sub-film source 15(1 work song film source as shown in Figure 5 and 2 work song film sources) two corresponding projection lens 30 central points have two subpoints in the horizontal plane at projection screen 7 central point, the angle that described subpoint and projection screen 7 central point are formed is less than the average angle that observer's eyes form stereopsis, that is: the level interval between the central point of the projection lens 30 of adjacent two sub-film source 15 correspondences is not more than the distance between human eye double vision, level interval between described adjacent two sub-film source 15 central points is less, the 3D effect broadcasted is more smooth, that is: crosstalk is less with jumping picture degree, the shooting angle of the 3D effect simultaneously broadcasted and film source or to make angle relevant, shooting angle or the making angle intervals of film source are less, and the 3D effect broadcasted is more smooth, the quantity in sub-pieces source 15 is determined by the specification of LCDs 9, the more tolerant sub-pieces source more than 15 received of LCDs 9, observation angle is then larger.
With the sub-pieces source sequence that 3D MAX virtual video camera is formed, namely be that example is described every 2 ° of prints taken from left to right to subject, if the pixel of LCDs 9 is 2560 × 1080, according to resolution and the size of LCDs 9, the film source play planning property is divided into the sub-pieces source arrangement mode of 3 × 5 for LCDs 9, namely the quantity in sub-pieces source 15 is 15, arrangement is arranged in 3 row 5, between the sub-pieces source 15 of adjacent rows go forward one by one distance grow crosswise for single sub-pieces source 15 1/3, become two projection lens 30 central points of adjacent two sub-film source 15 correspondences of progressive relationship projection screen 7 central point the angle that forms of projection in the horizontal plane and projection screen 7 central point be 2 °, and have 15 sub-film sources 15, so effective observation angle of the final bore hole 3D picture formed is 30 °, single projected picture pixel is about 450 × 360, then the stereoscopic picture plane pixel of people's eyes observation is about 900 × 720.
In order to improve and expand the size of bore hole 3D picture, pixel and observation angle, the resolution of the LCDs 9 in 3D projector 6 of can upgrading and size, the size wider then Observable angle of LCDs 9 is larger, the pixel of LCDs 9 is higher, and the effect observed is more clear, the quantity of respective flap source neutron film source and pixel need synchronous increasing and raising, for the sub-pieces source arrangement mode explanation of 4 × 9, between the sub-pieces source 15 of adjacent rows go forward one by one distance grow crosswise for single sub-pieces source 15 1/4, if the angle be formed centrally in the spacing in two sub-pieces sources 15 in form of going forward one by one and projection screen 7 is 2 °, suitable LCDs effective observation angle that then this bore hole 3D optical projection system is combined formed bore hole 3D picture with film source is coordinated to be 72 °.
The specification of film source and the specification of LCDs 9 are closely connected, and for setting forth the specification of LCDs 9 in bore hole 3D optical projection system, the specification of film source, the specification in sub-pieces source, sub-pieces source be relation between the line number columns of progressive relationship, states by such as the following formula:
a×n + a×(m-1)/m = x；
b×n = y；
x=s；
y=d；
In formula: the width of the single sub-pieces source (15) of a-, the height of the single sub-pieces source (15) of b-, m-sub-pieces source row number, n-sub-pieces source columns, the width of x-film source, the height of y-film source, the width of the effective display section of s-LCDs (9), the height of the effective display section of d-LCDs (9).
In order to reduce the original appearance of clapped stereo landscape, object or dummy model completely, again according to arrangement of from left to right sequentially going forward one by one after then needing that mirror image processing is carried out in the sub-pieces source 15 of making, and play for standing upside down when LCDs 9 is play, also film source can be put upside down, project on screen through projection lens 30 like this and be reality sequence clearly of standing upside down, and be visually the upright sequence of reality clearly.
As shown in Figure 7 and Figure 8, in the present embodiment, projection screen 7 adopts micro-window shutter directional scattering projection screen of shake at a high speed, described projection screen 7 comprises video screen 25, the display surface of video screen 25 is provided with micro-window shutter, described micro-window shutter comprises several micro-blade of louver window 20, described micro-blade of louver window 20 is the black foil of very thin flexible, each micro-blade of louver window 20 can swing along blade of louver window axis 21, distance between adjacent two micro-blade of louver window 20 is proportional with the angle of the video screen 25 that can observe through this distance, generally need this observation angle to be controlled between 1 ° ~ 2 °, namely single frames observation angle is 1 ° ~ 2 °, micro-blade of louver window 20 is connected with shifting shaft 18, shifting shaft 18 is provided with several and stirs blade 26, stir blade 26 to be staggered with micro-blade of louver window 20, shifting shaft 18 is arranged on the top of video screen 25, shifting shaft 18 is connected with shifting shaft drive unit, described shifting shaft drive unit comprises driving runner 16, runner 16 is driven to be rotatably connected to connecting rod 17, connecting rod 17 is connected with one end of shifting shaft 18, shifting shaft 18 is also connected with shifting shaft slide rail 19, shifting shaft slide rail 19 and shifting shaft 18 be arranged in parallel, move left and right along the transverse direction of video screen 25 for realizing shifting shaft 18, and then realize the high speed shake of micro-blade of louver window 20, in micro-blade of louver window 20 high speed dither process, top between adjacent two panels micro-blade of louver window 20 slit and bottom all crossing stirs blade 26, when single projected picture invests described projection screen 7, observer's eyes can only be positioned at enter to shield light angle overlap or misalignment angle is not more than described single frames observation angle time just can observe the effect of projected picture, when single frames observation angle is less than the angle that observer's eyes and screen center formed, only can realize eyes and see single frames picture, another eyes then be can't see, so just reach the effect of directional scattering, namely the function of projection screen 7 in bore hole 3D optical projection system can be realized.
Embodiment 2, bore hole 3D optical projection system, comprise 3D projector 6 and be arranged on the projection screen 7 in projecting light path of 3D projector 6, the configuration and principle of described 3D projector 6, with embodiment 1, repeats no more in the present embodiment.
As shown in Figure 9, in the present embodiment, projection screen 7 adopts the slit grating formula directional scattering projection screen of high-speed translation, described projection screen 7 comprises video screen 25, the periphery of video screen 25 is provided with crawler type slit grating band 23, the inner side of crawler type slit grating band 23 is connected with driving wheel 22, crawler type slit grating band 23 comprises slit section and shading light part, the slit section of crawler type slit grating band 23 is relevant with the quantity in sub-pieces source 15 with the ratio of shading light part, the area of the quantity in sub-pieces source 15 slit section is more at most less, the area of shading light part is larger, the width of shading light part becomes positive integer times relation with the width of slit, when sub-pieces source quantity is 12, the width of shading light part is 12 times of slit width, when sub-pieces source quantity is 24, then the width of shading light part is 24 times of slit width.The distance of sub-pieces source quantity more at most between crawler type slit grating band 23 to video screen 25 is larger, screen 7 is thicker, the brightness of the 3D picture demonstrated is lower, need the brightness increasing light fixture 11 in 3D projector 6 to improve the backlight illumination of LCDs, and then guarantee observation effect, the material reflectance of crawler type slit grating band 23 shading light part is more low is more conducive to presenting of 3D picture effect.
Crawler type slit grating band 23 high-speed rotation under the effect of driving wheel 22, the distance of crawler type slit grating band 23 slit section is proportional with the angle of the video screen 25 that can observe through this distance, generally need this observation angle to be controlled between 1 ° ~ 2 °, namely single frames observation angle is 1 ° ~ 2 °, when single projected picture invests described projection screen 7, observer's eyes can only be positioned at enter to shield light angle overlap or misalignment angle is not more than described single frames observation angle time just can observe the effect of projected picture, when single frames observation angle is less than the angle that observer's eyes and screen center formed, only can realize eyes and see single frames picture, another eyes then be can't see, namely the requirement of directional scattering projection screen is reached, the function of projection screen 7 in bore hole 3D optical projection system can be realized.
Embodiment 3, bore hole 3D optical projection system, comprise 3D projector 6 and be arranged on the projection screen 7 in projecting light path of 3D projector 6, the configuration and principle of described 3D projector 6, with embodiment 1, repeats no more in the present embodiment.
As shown in Figure 10, in the present embodiment, projection screen 7 adopts semi-convex Lenticular screen formula directional scattering projection screen, described projection screen 7 comprises column mirror grating 2, described column mirror grating 2 adopts semi-convex Lenticular screen, the side, focal plane of column mirror grating 2 is provided with fluoresent coating 24, and described fluoresent coating 24 is directly combined with the focal plane of column mirror grating 2.
At present, column mirror grating material 2 on the market mainly contains 10 lines, 32 lines, 43 lines, 75 lines, 100 lines, 160 line equal-specifications, the quantity of half projection lens in unit " line " i.e. per inch length, and described half projection lens are the lens pillar of half convex surface.The Pixel Dimensions that namely width of half projection lens and pitch and projected picture launch picture from projector has nothing to do, namely adopt the composition material of column mirror grating material as projection screen 7 of any one specification, namely pitch width is not limit, when projected picture projects on column mirror grating 2, the light of one fixed width by micro-column lens focus to focus, but when human eye is the same with incident ray level angle go to watch column mirror grating 2 time, the optical information of focus is reverted to again size during incidence by the amplification of micro-column lens, the focus of other angles can be seen again when observer's eyes move horizontally, material is thus formed directional scattering, the characteristic of pseudoanisotropy.Because material is light, without the need to Mechanical Driven, have optically focused characteristic, brightness is high, and in practical application, this semi-cylindrical lens raster pattern directional scattering projection screen can be used as the first-selection of projection screen 7 in bore hole 3D optical projection system.
The above is the citing of best mode for carrying out the invention, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (10)
1. bore hole 3D optical projection system, is characterized in that: the projection screen (7) that described optical projection system comprises a 3D projector (6) and is arranged in 3D projector (6) projecting light path;
Described 3D projector (6) comprises the LCDs (9) for playing film source, and the projecting light path between LCDs (9) and projection screen (7) is provided with projection lens's head group (10);
Described film source comprises several sub-pieces sources (15);
Described sub-pieces source (15) is arranged in m capable n row, m be more than or equal to 1 positive integer, n be greater than 1 positive integer;
Sub-pieces source (15) Heterogeneous Permutation between described row and row;
The distance of the dislocation between the sub-pieces source (15) of described adjacent rows is the 1/m that single sub-pieces source (15) is grown crosswise.
2. bore hole 3D optical projection system as claimed in claim 1, is characterized in that: described projection lens head group (10) comprises several projection lens (30) for sub-pieces source (15) being projected in the upper overlap of projection screen (7).
3. bore hole 3D optical projection system as claimed in claim 2, is characterized in that: the quantity of described projection lens (30) is consistent with the quantity of sub-pieces source (15);
Described projection lens (30) and sub-pieces source (15) one_to_one corresponding.
4. bore hole 3D optical projection system as claimed in claim 1, is characterized in that: described sub-pieces source (15), meet following relational expression between film source and LCDs (9):
a×n + a×(m-1)/m = x
b×n = y
x=s
y=d
In formula: the width of the single sub-pieces source (15) of a-, the height of the single sub-pieces source (15) of b-, the width of x-film source, the height of y-film source, the width of the effective display section of s-LCDs (9), the height of the effective display section of d-LCDs (9).
5. bore hole 3D optical projection system as claimed in claim 4, is characterized in that: the horizontal range between adjacent two projection lens (30) central points is less than the distance between human eye double vision.
6., as the bore hole 3D optical projection system of claim 1-5 as described in one of them, it is characterized in that: described projection screen (7) comprises column mirror grating (2);
Described column mirror grating (2) adopts semi-convex Lenticular screen, and the side, focal plane of semi-convex Lenticular screen is provided with fluoresent coating (24);
Described fluoresent coating (24) directly and column mirror grating (2) combine.
7., as the bore hole 3D optical projection system of claim 1-5 as described in one of them, it is characterized in that: described projection screen (7) comprises video screen (25), the display surface of video screen (25) is provided with the micro-window shutter that can shake at a high speed.
8. as the bore hole 3D optical projection system of claim 1-5 as described in one of them, it is characterized in that: described projection screen (7) comprises video screen (25), the periphery of video screen (25) is provided with can the crawler type slit grating band (23) of high-speed rotation.
9. bore hole 3D optical projection system as claimed in claim 1, is characterized in that: described 3D projector (6) also comprises light fixture (11);
Described light fixture (11) is arranged on the rear of LCDs (9);
The light path of described light fixture (11) is provided with dodging device.
10. bore hole 3D optical projection system as claimed in claim 1, is characterized in that: the mosaic screen that described LCDs (9) is whole screen or more than two pieces.
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| CN201310419312.1A CN103454778B (en) | 2013-09-16 | 2013-09-16 | Bore hole 3D optical projection system |
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| CN201310419312.1A CN103454778B (en) | 2013-09-16 | 2013-09-16 | Bore hole 3D optical projection system |
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| CN103984108B (en) * | 2014-05-05 | 2017-11-21 | 天津大学 | Nakedness-yet stereoscopic display method and device based on vibrating grating |
| CN110070737A (en) * | 2019-05-30 | 2019-07-30 | 湖北省安防科技研究中心 | A kind of traffic lights and road conditions billboard |
| CN110519579A (en) * | 2019-08-20 | 2019-11-29 | 江苏尚阳数字科技有限公司 | A kind of optical projection system and projecting method |
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