CN103676163B - High-resolution grating three-dimensional picture - Google Patents
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- CN103676163B CN103676163B CN201210335413.6A CN201210335413A CN103676163B CN 103676163 B CN103676163 B CN 103676163B CN 201210335413 A CN201210335413 A CN 201210335413A CN 103676163 B CN103676163 B CN 103676163B
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Abstract
The invention discloses a kind of preparation method of high-resolution grating three-dimensional picture, with reference to laser photo-typesetting output, gridding halftoning, optical filter colour developing and exposure reproduction technology, the three-dimensional lamp piece and printing paper of exportable ultrahigh resolution.Its principle is the colouring components of RGB tri- of stereo-picture negative film to be reassembled into a monochrome image, after gridding treatment, exported onto a film with laser photocomposing machine, it is folded on colored filter, forms stereo colour negative film, is copied on lampion piece or printing paper by repeatedly translation exposure.The high-definition three-dimensional picture that the present invention is provided, the output accuracy with superelevation, image is fine and smooth, color range is enriched, and improves viewing comfort level, is particularly suitable for showing several high-definition three-dimensional advertisements on a lamp box.
Description
Art：
The invention belongs to optics display technology field, it is related to the preparation method and structure of a kind of grating three-dimensional picture.
Background technology：
Grating three-dimensional picture watches the free, advantage that third dimension is strong and adaptability is good with it, in photography, advertisement and decoration etc.
Industry is progressively popularized.Stereotome is generally constituted by 3 D grating and stereo composite image are compound, and 3 D grating is mainly
Column mirror grating, or slit grating, stereo composite image be sampled again by a series of anaglyph be arranged in it is new
Image, its feature is details very abundant, and amount of image information is big, therefore horizontal output accuracy requirement is high, usually plane
More than 10 times of image, i.e., can be only achieved satisfied definition higher than 2000dpi, and conventional output intent such as digital-code laser is washed
Print, description air brushing, printing etc. are far not by far up to the mark, and cause the third dimension and definition of stereotome all unsatisfactory,
The especially also larger gap compared with plane picture of definition.
High-resolution grating three-dimensional picture disclosed in patent 200710079378.5, solves the vertical of stereo lamp box piece well
Body-sensing, definition and viewing comfort level problem；RGB stereosopic printings color version disclosed in the patent No. 201020188286.8, can be with
Print black white image to show color solid image, it is to avoid the chromatography bottleneck of printing, while solving the cost of stereo lamp box piece
With batch production problem.The two patents are, using RGB color version and black white image overlapping, to manage display using addition chromogen colored
Image, although the advantage with very high resolution, still there is 2 points of deficiencies.First, the brightness of image only has three points of ordinary lamps piece
One of, it is only used for lamp piece and cannot be used for printing paper；Second, the RGB sub-pixel positions of same pixel are separated up and down, space availability ratio
It is not high.Color version described in above-mentioned two patent, is hereinafter replaced, " the line on color version with more accurately word " optical filter "
Bar " is replaced with " optical filtering bar ", after the present invention is being developed to improve it not enough on the basis of patent 200710079378.5
Supervention is bright.
The content of the invention：
The present invention discloses a kind of preparation method of high-resolution grating three-dimensional picture, combines laser photo-typesetting output, gridding
Halftoning, optical filter colour developing and exposure reproduction technology, it is therefore intended that a kind of ultrahigh resolution stereo-picture exposure technique is provided,
Exportable three-dimensional lamp piece and printing paper, and the method for making the changeable stereo-advertisement lamp box of fine definition.
Principle of the invention is that the colouring components of RGB tri- of stereo-picture negative film are reassembled into a monochrome image, net
Format after treatment, exported onto a film with laser photocomposing machine, be folded on colored filter, form stereo colour negative film,
Copied on lampion piece or printing paper by repeatedly translation exposure.Implementation process and step include：1. optical filter is designed and produced, 2.
Design output stereo-picture negative film, the 3. installation of stereo-picture negative film, 4. the copy exposure method of single stereoscopic image, 5. changeable
The copy exposure method of three-dimensional lamp piece, the 6. structure of changeable stereo-advertisement lamp box.
The process of high-definition three-dimensional picture output is realized in explanation below.
Colored filter considers striation (3) and blueness by periodicity, continuously away from red worry striation (2) arranged in parallel, green
Consider striation (4) to constitute, as shown in figure 1, the width for considering striation is equal, i.e., line width is arranged in for three optical filtering bars of red, green, blue of d
Line width is one group of optical filtering bar of 3d, and common display a line RGB color pixel, N group optical filterings bar constitutes whole color filter patterns,
Corner sets alignment mark (1).
The production method of colored filter can refer to LCD optical filter exposure technique, relatively costly but colour filter is good.
Colored filter is a spare part that can not lack for realizing that LCD is coloration, the manufacture method of colored filter
In, the technology of main flow is the distributed Photoresist methods of pigment, this be the pigment of corpusculed is evenly dispersed into it is photosensitive
Property resin in, by this dyeing photosensitive material, be repeated on the glass substrate with Black Matrix smearing, exposure,
The processing procedures such as lithographic, to form the dye layer of RGB.
Colored filter in the present invention does not need black matrix Black Matrix, produces relatively easy, can be by covering
The method of mould contact exposure full impregnated lamp piece is obtained.As shown in Fig. 2 exporting a slit grating, its light transmission strip with laser photo-typesetting piece
(5) width is d, and the width of shading strip (6) is 2d, generally, 0.1mm ＜ d ＜ 0.5mm.As shown in figure 3, slit light
On one piece of clear glass (10), full impregnated lamp piece (8) is flattened absorption on load base (7), with slit grating to grid (9) mount
(9) exposure is in close contact, load base (7) can be moved to the left and leave slit grating (9), return error is less than when contacting again
10 microns.It is strong to obtain relatively uniform light (11) using 3 red, green and blue LED lamps of diverging as spot light far field exposures
Degree, red LED (12), green LED (13), the time for exposure difference controllable precise of blue led (14) lamp, can adjust each color
Light exposure.First give the green light and blue lamp exposure, through after slit grating (9) shading strip (5) on full impregnated lamp piece (8) respectively show product
Red and yellow, is superimposed as red；Then translation clear glass (10), displacement is d, and moving direction is vertical with shading strip (5),
Give the red light to and blue lamp contact exposure again, through after slit grating (9) shading strip (5) on full impregnated lamp piece (8) respectively show cyan
And yellow, it is superimposed as green；The equidirectional displacement d again of clear glass (10), gives the red light to and green light contact exposure, through slit
Show cyan and magenta after grating (9) shading strip (5) respectively on full impregnated lamp piece (8), be superimposed au bleu.Alignment mark (1) also may be used
Copied on full impregnated lamp piece (8) with by exposure.Full impregnated lamp piece (8) rinsed after cutting is exactly the colorized optical filtering that we need
Piece, as colour developing element Reusability.
Alignment mark (1) has two effects, one is display is correct after being overlapped with the stereo-picture contraposition of laser photo-typesetting
Color, the second is as the anchor point between several different stereo-pictures.One typical 60cm × 80cm optical filters, W=
600mm, d=0.254mm, N=1050, chromatography error requirements are less than 0.01mm.
Design output stereo-picture negative film, first has to determine three parameters：The width d of optical filter optical filtering bar, laser photo-typesetting
The output resolution ratio R of machine, the grating pitch P of stereo-picture.
Color solid image is set to be converted into gray level image output to laser photo-typesetting piece, moreover it is possible to restore correct face
Color to colour information, it is necessary to encode.As shown in figure 4, the R sub-pixels (15) of colour element, G sub-pixel (16), B
Pixel (17) is arranged in gray level image in upper, middle and lower, forms a full color pixel (18).By RGB pattern stereograms
Picture, is converted into gray scale stereo-picture, is then meshed into the method for the 1bit TIF images that can be exposed, in referring to background technology
Two patents being related to.
When generally contiguous tune greyscale image transitions are into half tone image, the area shared by a pixel is square, this
Sample can ensure the uniformity of the transverse and longitudinal resolution ratio of image, the sizing grid of each pixel of gray level image exposure in the present invention
It is set as a*b, b》A, pixel grid is in long narrow strip genesis analysis, and the lateral resolution of gray level image is R/a.In order to obtain most
Output accuracy high, directly sets a=1, and the lateral resolution of stereo-picture is equal to the output resolution ratio R of laser photocomposing machine.
Parallax sequence figure synthesis pitch by one group of RGB pattern is the stereo-picture of P, is normalized, that is, cancel
Aspect ratio example constraint, image pixel is reset by interpolation, by the resolution setting of stereo-picture into R, keeps width dimensions
It is constant, pixels tall is compressed to (former height dimension/3d) and is rounded, it is ensured that every group of optical filtering bar correspondence a line colour element, as
Plain height refers to the total pixel number on picture altitude direction, is calculated as h.By stereo-picture reversely into negative film, below stereo-picture bear
Piece is still referred to as stereo-picture, creates a gray level image, and resolution ratio is R, and pixels tall is 3h, width and color solid image phase
Together.The R of stereo-picture, G, channel B color value are filled into gray level image, specific method is as follows：
The color value of stereo-picture R passage jth rows is filled into the 3j rows of gray level image；
The color value of stereo-picture G passage jth rows is filled into the 3j+1 rows of gray level image；
The color value of stereo-picture channel B jth row is filled into the 3j+2 rows of gray level image.
One-row pixels one optical filtering bar of correspondence in gray level image can be ensured, wherein, j=0,1,2,3 ... ..., h-1.
Different from the amplitude modulation screening technology that printing industry is used, the shapes and sizes of gray level image each pixel have been fixed
Get off, the select permeability of angle, frequency in the absence of screen, sizing grid is 1*b.As shown in figure 5, each small lattice generation on grid
One exposure position of table, exposure point (19) is black, is shut out the light, and unexposed point (20) is white, and transmitted light exposes in grid
The laser spots area ratio of light represents corresponding gray value.In order to reduce influence of the exposure point expansion to GTG, the laser of exposure
Point (19) flocks together；Meanwhile, in order to reduce influence of the colored filter with the registration error of stereo-picture to color, do not expose
Luminous point (20) concentrates on net center of a lattice as far as possible.
When gray level image gridding is processed, the sizing grid for using is 1*b, b=d*R/25.4, in the width of design optical filtering bar
During degree d, ensure that b is integer, such as R=4000dpi, b=40, d=0.254mm as far as possible.If it cannot be guaranteed that b is integer, can appoint
Take an integer more than b and make gridding treatment, then cancel aspect ratio example constraint, interpolation resets image pixel, by height
Degree size adjusting is d*3h, also alignment can be aligned with colored filter, it is possible that causing color error and uneven horizontal stroke
To lines.
The codomain of gray level image pixel is [0,255], and the span of a pixel grid laser explosure point quantity is
There is error in [0, b], at most only b+1 GTG, gridding, error counts same row following 3rd pixel when processing, this
Two same colors of pixel.
As shown in a~r in Fig. 5, the grid of 1*16 can show 17 GTGs 0~16, and the exposure point (19) of black gathers
Collection is gathered in the center of grid in the two ends of grid, the unexposed point (20) of white.
Aligning accuracy between stereo-picture and colored filter, parallel in optical filtering bar is different with requirement in vertical direction
, the aligning accuracy with optical filtering bar parallel direction is less demanding, the requirement not aligned in other words, and require it is right in vertical direction
Position precision is higher.If it is not sharp keen that transition between the requirement of aligning accuracy, or optical filtering bar is not reached in actual production, excitation
When not high, black can be increased between assorted optical filtering bar and block lines (21) to ensure color entirely accurate.Such as a in Fig. 6
Shown in~r, 17 GTGs 0~16 are shown with the grid of 1*20, the exposure point (19) of two ends filling black increases assorted optical filtering bar
Between interval, can preferably solve the problems, such as because of the color cross-talk that aligning accuracy not enough causes.
An one-dimension array G [b] is set up, by the sequencing of exposure point appearance to array assignment.Since grid two ends
Exposure, as shown in Figure 5, Figure 6：
As j ＜ [b/2], G [j]=b-2j-1
As j >=[b/2], G [j]=2j-b+2
J=0,1,2 ... ..., b-1, [b/2] is that the result of b/2 is rounded.
If b=16, as shown in figure 5, G [0]=15, G [1]=13, G [2]=11, G [3]=9, G [4]=7, G [5]=
5, G [6]=3, G [7]=1, G [8]=2, G [9]=4, G [10]=6, G [11]=8, G [12]=10, G [13]=12, G [14]
=14, G [15]=16.
If b=20, as shown in fig. 6, G [0]=19, G [1]=17, G [2]=15, G [3]=13, G [4]=11, G [5]
=9, G [6]=7, G [7]=5, G [8]=3, G [9]=1, G [10]=2, G [11]=4, G [12]=6, G [13]=8, G [14]
=10, G [15]=12, G [16]=14, G [17]=16, G [18]=18, G [19]=20.
The grey scale pixel value of gridding is needed for C, and 0≤C≤255, C=0 is completely black, and C=255 is complete white.After gridding
Unexposed white point quantity is W=C*e/255+ δ, and δ is the gridding error of pixel of same column top the 3rd, the integer portion of W
Point [W] is actual white points, and fractional part W- [W] is designated as new error delta, and the error is added to stereo-picture same row following the
In three gridding treatment of pixel.E is the maximum of white points, if being not added with black blocks bar, e=b；If increasing y
The black of individual laser explosure point width blocks bar, e=b-y.
In a strip grid, if G [j]≤[W], the point is white point, is otherwise exposure point, and this process is compiled
It is made program relief computer and automatically processes and realizes gridding.
As shown in fig. 7, the half tone image of gridding is by the exposure point (19) of black and unexposed point (20) group of white
Into.A line red pixel grid (22) with it is red consider pass through after striation (2) overlapping feux rouges, a line green pixel grid (23) with it is green
Color passes through green glow after considering striation (3) overlapping, and a line blue pixel grid (24) passes through blue light after considering striation (4) overlapping with blueness.
Half tone image is directly exposed on laser photo film by laser photocomposing machine.
The contraposition of stereo-picture negative film is installed.As shown in figure 8, colored filter (28) mount is in clear optical glass (25)
Middle dashed box area in, alignment mark (1) and optical filtering bar pattern are faced outwardly；Divide between dashed box inside and outside clear optical glass (25)
Many apertures (26) are furnished with, can be evacuated from behind；There is an adhesive tape circle (27) in outside.The photosensitive layer of stereo-picture film
It is applied on glass outwardly, four on film mark and alignment mark (1) alignment, it is ensured that pixel grid and corresponding color
Consider striation correctly to overlap, the enough rubber cover zone circles (27) of area of film, smooth the film in pumping, and film surrounding is consolidated
It is scheduled on glass.Film, optical filter, glass form a stereo-picture negative folder, and phenanthrene need to be only changed when changing stereo-picture
Forest tract, it is very convenient.
Copy device illustrated in Figure 3 can copy three-dimensional lamp piece and printing paper.Stereo-picture negative folder substitutes therein narrow
Seam grating (9) and clear glass (10), photosensitive lamp piece or printing paper replace full impregnated lamp piece (8) therein, are flattened absorption in load
On base (7), the metal covering for adsorbing photosensitive material applies Berlin black；Stereo-picture negative film is in close contact exposure with photosensitive material
Afterwards, load base (7) can be moved to the left release, energy accurate return when contacting again, and stereo-picture negative film can be accurate up and down
Displacement；Using 3 RGB high-brightness LED lamp group spot lights of diverging, far field exposures are obtaining relatively uniform light (11)
Intensity, red LED (12), green LED (13), the time for exposure difference controllable precise of blue led (14) lamp, can adjust each face
The light exposure of color, light source distance photosensitive material center is not less than 800mm, and the inhomogeneities of brightness can be carried out in the former piece of design
Compensation.
The copy exposure method of single stereoscopic image is as shown in figure 9, according to subtraction color colour developing principle, exposure every time is at most in
Blue or green, pinkish red, Huang Sanse and non-overlapping copies, therefore minimum needs could complete the whole exposure process of photosensitive material (29) for five times.The
Once, stereo-picture negative folder be in home position, red, green, blue tri coloured lantern standard-sized sheet exposure, colored filter (28) it is red, green,
, through the light (33) of corresponding color, the pixel (30) of photosensitive material (29) exposure is respectively in blue or green, pinkish red, yellow for blue optical filtering bar
Color；Second, stereo-picture negative folder is moved down apart from d, opens red, green bicolored light exposure, the red of colored filter (28)
Optical filtering bar passes through red light (32), and green filter bar passes through green light, and blue filter bar is light tight, and photosensitive material (29) exposes
The pixel (30) of light is respectively in blue or green, pinkish red；For the third time, stereo-picture negative folder is moved down apart from d, opens red colored lamp exposure,
The red filter bar of colored filter (28) passes through red light, and green filter bar and blue filter bar are light tight, photosensitive material
(29) pixel (30) of exposure is in cyan；4th time, stereo-picture negative folder is moved up apart from 3d, opens green, blue lamp
Exposure, the green filter bar of colored filter (28) passes through green light, and blue filter bar passes through blue ray, red filter bar
(31) light tight, the pixel (30) of photosensitive material (29) exposure is respectively in pinkish red, yellow；5th time, stereo-picture negative folder
Move up apart from d, open blue lamp exposure, the blue filter bar of colored filter (28) passes through blue ray, red filter bar
Light tight with green filter bar, the pixel (30) of photosensitive material (29) exposure is in yellow.It is negative with stereo-picture after the completion of exposure
The corresponding position of one rgb pixel point of piece is copied out three identical pixels, although there is pixel redundancy, but improves image
Brightness, can also be exposed on printing paper in addition to lamp piece.If there is black between optical filtering bar blocks bar (21), displacement d will
It is corresponding to reduce, it is necessary to the more number of times of movement complete whole exposure.
The copy exposure method of several stereo-pictures as shown in Figure 10, prepares three stereo-picture negative films, according to subtraction color
Colour developing principle, every stereo-picture negative film moving exposure 3 times will be in blue or green, pinkish red, yellow tricolor exposing in same vitta width
On, two width stereo-pictures just fill remaining blank position in addition, and this is a kind of 3 more satisfactory change stereo-picture output sides
Case, without accurate registration requirement, it is necessary to the whole exposure process of photosensitive material (29) could be completed for 9 times between three stereo-pictures.
For the first time, first stereo-picture negative folder is in home position, and exposure of giving the red light to, red light is filtered through red
Striation is exposed on photosensitive material (29), and the pixel (30) of exposure is in cyan；Second, first stereo-picture negative folder to
Upper displacement d, exposure of giving the green light, green light is exposed on same position on photosensitive material (29) through green filter bar, exposes
The pixel (30) of light is in magenta；For the third time, first stereo-picture negative folder is moved up apart from d, opens blue lamp exposure, blue
Light is exposed on same position on photosensitive material (29) through blue filter bar, and the pixel (30) of exposure completes the in yellow
One exposure process of stereo-picture (34), develops the color (C1, M1, Y1).
4th time, second stereo-picture negative folder is in home position, and exposure of giving the green light, green light is filtered through green
Striation is exposed on photosensitive material (29), and the pixel (30) of exposure is in magenta；5th time, second stereo-picture negative folder to
Lower displacement d, exposure of giving the red light to, red light is exposed on same position on photosensitive material (29) through red filter bar, exposes
The pixel (30) of light is in cyan；6th time, second stereo-picture negative folder is moved up apart from 2d, opens blue lamp exposure, blue
Coloured light line is exposed on same position on photosensitive material (29) through blue filter bar, and the pixel (30) of exposure is completed in yellow
Second exposure process of stereo-picture (35), develops the color (C2, M2, Y2).
7th time, the 3rd stereo-picture negative folder is in home position, opens blue lamp exposure, and blue ray is filtered through blue
Striation is exposed on photosensitive material (29), and the pixel (30) of exposure is in yellow；8th time, the 3rd stereo-picture negative folder to
Lower displacement d, exposure of giving the green light, green light is exposed on same position on photosensitive material (29) through green filter bar, exposes
The pixel (30) of light is in magenta；9th time, the 3rd stereo-picture negative folder is moved down apart from d, exposure of giving the red light to, red
Light is exposed on same position on photosensitive material (29) through red filter bar, and the pixel (30) of exposure completes the in cyan
Three exposure process of stereo-picture (36), develop the color (C3, M3, Y3)。
After the completion of exposure, three width stereo-pictures are copied on same photosensitive lamp piece.If existed between optical filtering bar black
Color blocks bar (21), and displacement d will accordingly reduce, and can copy more stereo-pictures on one decorated with lanterns.If black
The width for blocking bar (21) reaches d/2, then displacement will be reduced to d/2, can copy 6 stereo-pictures, forms 6 and becomes vertical
Body advertising lamp box.
High definition stereotome is clear bright main reason is that employ halftone technique, between adjacent pixel completely solely
Vertical no fusion, better than the stereotome that same precision continuously adjusts exposure.Additionally, color separation figure is by the unidirectional small position of same glass plate
Exposure is moved, the alignment precision of full frame can be better than 1 micron.
The structure of changeable tridimensional advertisement lamp piece is as shown in figure 11.The back of the body of slit grating (38) mount in column mirror grating (37)
Face, slit grating line direction is vertical with column mirror grating line.The pitch of slit grating (38) is 3d, with the slit grating shown in Fig. 2
(9) it is identical, the width of light transmission strip (5) is differed only in, the corresponding light transmission strip width of the three-dimensional lamp piece of 3~6 changes is d~d/2.It is photosensitive
Lamp piece (29) is on the focusing surface of column mirror grating, and slit grating (38) is small as existing between change figure grating and photosensitive lamp piece (29)
Gap, can relatively move, the switching between control stereo-picture.
The high-definition three-dimensional picture that the present invention is provided, the output accuracy with superelevation, the abundant color range of exquisiteness, third dimension and
Definition has compared to conventional output intent and increases substantially.Can just be reached with relatively thin sheet material grating needed slab in the past
The third dimension that material grating can just represent, image is fine and smooth, is particularly suitable for showing several high-definition three-dimensional advertisements on a lamp box.
Brief description of the drawings：
Fig. 1 is the structural representation of colored filter.
Fig. 2 is the structural representation of slit grating.
Fig. 3 is contact exposure apparatus principle schematic.
Fig. 4 is the color sub-pixel coding structure schematic diagram of gray level image.
Fig. 5 is the structural representation of sub-pixel grid.
Fig. 6 is the structural representation of the sub-pixel grid that lines are blocked with black.
Fig. 7 is the half tone image of gridding.
Fig. 8 is the structural representation of stereo-picture negative folder.
Fig. 9 is single stereoscopic image copy exposure method schematic diagram.
Figure 10 is several stereo-pictures copy exposure method schematic diagram.
Figure 11 is the structural representation of changeable tridimensional advertisement lamp piece
Shown by reference numeral in above-mentioned each accompanying drawing is：
1 alignment mark, 2 red filter bars, 3 green filter bars, 4 blue filter bars, 5 light transmission strips, 6 shading strips, 7 load bottoms
Seat, 8 full impregnated lamp pieces, 9 slit gratings, 10 clear glasses, 11 exposure lights, 12 red LED lamps, 13 green LED lamps, 14 is blue
LED, 15R sub-pixels, 16G sub-pixels, 17B sub-pixels, 18 full color pixels, 19 exposure points, 20 unexposed points, 21 is black
Color blocks lines, 22 red pixel mesh rows, 23 green pixel mesh rows, 24 blue pixel mesh rows, 25 clear optical glass,
26 apertures, 27 adhesive tape circles, 28 colored filters, 29 photosensitive materials, 30 exposing pixels points, 31, lighttight optical filtering bar, 32, thoroughly
The optical filtering bar of light, 33 transmitted rays, the position of 34 first stereo-pictures exposure and sequential, 35 second stereo-picture exposures
Position and sequential, the position of 36 the 3rd stereo-pictures exposure and sequential, 37 column mirror gratings, 38 slit gratings.
Specific embodiment：
Laser photo-typesetting one slit grating of 600m*800m of output, grating line length 600mm, output accuracy 4000dpi, thoroughly
Striation 0.254mm wide, shading strip 0.508mm wide, mount mask moving exposure on clear glass copies out colored filter,
Alignment mark is set in surrounding.The breadth of colored filter is 600*800mm, and optical filtering bar length is 600mm, and width is
0.254mm, mount is in clear optical glass (25) as shown in Figure 8.
It is by one group of parallax sequence Figure 100 opening and closing of RGB patterns into the stereo-picture that pitch is 0.635mm, breadth
600mm*800mm.It is normalized, by interpolation by the resolution setting of stereo-picture into 4000dpi, keeps width
600mm is constant, and by high compression to 1050 pixels, the actual height of stereo-picture will be reduced into 0.254*3*1050=
800.1mm, by stereo-picture reversely into negative film.A gray level image is created, resolution ratio is 4000dpi, is highly 1050*3=
3150 pixels, width is 600mm, and the R of stereo-picture negative film, G, channel B color value are filled into gray level image.Each laser
The size of point is 25.4mm/4000=0.00635mm, and the width of optical filtering bar is 0.254mm, exactly 40 height of laser spots
Degree, half tone image is processed into the grid of 1*40 by gray level image, and surrounding sets laser photo-typesetting output after alignment mark.It is three-dimensional
Image negative film is assembled in clear optical glass (25) negative folder for forming exposure.
According to exposure position and sequential shown in Fig. 9, negative image is copied on lamp box panel or printing paper, with 40 after flushing
Line column mirror grating is bonded into high-definition three-dimensional picture.
Claims (7)
1. a kind of high-resolution grating three-dimensional picture, is combined by the stereo-picture behind column mirror grating and it, it is characterised in that
The colouring components of RGB tri- of stereo-picture negative film are reassembled into a gray level image, gridding is processed into half tone image, with swash
Light film setter is exported onto film, is aligned with colored filter and overlapped, and stereo-picture negative film is formed, by RGB three-color light sources
Repeatedly translation exposure is copied on lampion piece or printing paper；Wherein, the exposure copy is specifically included：By photosensitive lamp piece or printing paper
Absorption is flattened on load base (7), after stereo-picture negative film contact exposure, load base (7) can move release, then
During secondary contact exposure can accurate return, stereo-picture negative folder can actual displacement up and down, it is highlighted using 3 RGBs for dissipating
Degree LED light group makees spot light, and far field exposures are obtaining relatively uniform light (11) intensity, red LED (12), green LED
(13), the time for exposure difference controllable precise of blue led (14) lamp, can adjust the light exposure of each color；Wherein, stereo-picture
Negative film, colored filter and clear optical glass form a stereo-picture negative folder by negative-pressure adsorption.
2. stereotome as claimed in claim 1, is further characterized in that, colored filter is by periodicity, continuously away from parallel
The red filter bar (2) of row, green filter bar (3) and blue filter bar (4) are constituted, and the width of optical filtering bar is equal, red, green, blue
Three optical filtering bars are arranged in one group, common display a line RGB color pixel.
3. stereotome as claimed in claim 2, is further characterized in that, pixel grid size is a*b, b》A, pixel grid is in
Long narrow strip genesis analysis, the lateral resolution of gray level image is R'/a, and R' is the output resolution ratio of laser photocomposing machine.
4. stereotome as claimed in claim 3, is further characterized in that, one group of parallax sequence figure of RGB patterns is synthesized into grid
Away from the stereo-picture for P, it is normalized, that is, cancels aspect ratio example constraint, image pixel is reset by interpolation, will
The resolution setting of stereo-picture keeps width dimensions constant into R', pixels tall is compressed into former height dimension/3d and is taken
Whole, d is the width of each optical filtering bar, it is ensured that every group of optical filtering bar correspondence a line colour element, creates a gray level image, resolution ratio
It is R', pixels tall is three times of color solid image, and width is constant, and the R of stereo-picture, G, channel B color value are filled into
In gray level image, the R sub-pixels (15) of colour element, G sub-pixel (16), a B sub-pixels (17) are presented in gray level image
In lower arrangement, form a full color pixel (18).
5. stereotome as claimed in claim 4, is further characterized in that, when gray level image gridding is processed, the grid of use
Size is 1*b, and the codomain of gray level image pixel is [0,255], a span for pixel grid laser explosure point quantity
It is [0, b], at most only b+1 GTG that gridding has error when processing, and error counts following 3rd pixel of same row,
The same color of the two pixels, the exposure point (19) of black is gathered in the two ends of grid, and the unexposed point (20) of white is gathered in net
The center of lattice.
6. stereotome as claimed in claim 5, is further characterized in that, by a multiple translation exposure for stereo-picture negative film
Copy on photosensitive material, on the corresponding position height 3d of rgb pixel point, be at least copied out three identical pixels.
7. stereotome as claimed in claim 5, is further characterized in that, at least 3 width stereo-picture negative films repeatedly translate exposure
Copy on photosensitive lamp piece, on the corresponding position height 3d of rgb pixel point, several stereo-pictures that are arranged above and below successively are same
Position color pixel cell, at the back side of three-dimensional column mirror grating (37), photosensitive lamp piece (29) is in post mirror light for slit grating (38) mount
On the focusing surface of grid, there is small―gap suture in slit grating (38), moving up and down can as change between figure grating, with photosensitive lamp piece (29)
To control the switching between several stereo-pictures.
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| CN108405375B (en) * | 2018-05-08 | 2024-03-22 | 合肥美亚光电技术股份有限公司 | Material analysis device and control method thereof |
| CN111123547A (en) * | 2018-10-15 | 2020-05-08 | 青海荟源工贸有限公司 | Novel 3D (three-dimensional) lamp box |
| CN116962890B (en) * | 2023-09-21 | 2024-01-09 | 卡奥斯工业智能研究院(青岛)有限公司 | Processing method, device, equipment and storage medium of point cloud image |
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