CN101169518A - Naked eye visible stereo image liquid crystal grating time-sharing display device - Google Patents
Naked eye visible stereo image liquid crystal grating time-sharing display device Download PDFInfo
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- CN101169518A CN101169518A CNA2007100314263A CN200710031426A CN101169518A CN 101169518 A CN101169518 A CN 101169518A CN A2007100314263 A CNA2007100314263 A CN A2007100314263A CN 200710031426 A CN200710031426 A CN 200710031426A CN 101169518 A CN101169518 A CN 101169518A
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Abstract
The invention relates to the stereo image liquid crystal grating time-sharing display device which is visual to bare eyes. The invention comprises a display and a PC host computer which is provided with a drawing card. The display comprises an image screen and a grating screen. The image screen and the grating screen are all connected with the drawing card. An angle a is formed between the X axis of the image screen and the X axis of the grating screen, and the value range of the angle a is between 0 degree and 90 degrees. The invention can satisfy bare eyes to watch the stereo images, simultaneously, the invention solves the defect that serious light interference phenomenon caused by the point-pixel distance coupling of the image screen and the grating screen in the prior art. The display can normally word and better effect of watching stereo images using bare eyes can be guaranteed. The applied range of the device is wide; thereby the device can be suitable to watch 2D/3D images.
Description
Technical field
The present invention relates to autostereoscopic image display technique field (Autostereoscopic Display), specifically be meant naked eye visible stereo image liquid crystal grating time-sharing display device.
Background technology
At present, a kind of naked eye visible stereo image explicit representation that is called has appearred in autostereoscopic image display technique field.So-called naked eye visible stereo image explicit representation just is meant that need not wear special instrument (for example special spectacles and the helmet) just can watch stereo-picture.The ultimate principle of naked eye visible stereo image display packing is to utilize a special picture, all odd number alignments are used for representing a width of cloth right eye figure on this special picture, all even number alignments are used for representing a width of cloth left eye figure, on the position of certain setting, see through grating, right eye just in time can be seen all the odd number ranks on the figure, left eye just in time can be seen all the even number ranks on the figure, that is to say that right eye sees that just in time right eye figure, left eye just in time see left eye figure, we just can see a stereo-picture intuitively like this.Because the human body right and left eyes is to watch left eye figure, right eye figure respectively, so three-dimensional film and stereo-picture can not watch for a long time, otherwise can make eyes produce physiologic fatigability and come to harm.
A kind of naked eye visible stereo image display device with liquid crystal shutter optical screen is disclosed in the patent No. is the Chinese utility model of ZL200620054516.5, the display of this naked eye visible stereo image display device with liquid crystal shutter optical screen can produce serious light interference phenomena because of the plain distance coupling of the point of image screen and light screen, thereby make the display cisco unity malfunction, can have influence on normal viewing effect.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the deficiencies in the prior art, provide a kind of and not only can overcome because of a light interference phenomena that plain distance coupling produces, but also can be with whole display level or the vertical naked eye visible stereo image liquid crystal grating time-sharing display device of placing.
Purpose of the present invention is achieved through the following technical solutions: naked eye visible stereo image liquid crystal grating time-sharing display device, comprise display and be provided with the PC main frame of making graph card, described display comprises image screen and grating screen, described image screen and grating screen all with as graph card link to each other, the X-axis of the X-axis of described image screen and grating screen is a in an angle, and the span of described angle a is 0 °≤a≤90 °.
The numerical value of described a by the point of image screen apart from the point of T and grating screen apart from P (pitch) decision, when the highest common factor of T, P equals 1, a=0 ° or a=90 ° of this moment; When 0 °＜a＜90 °, the highest common factor between T/sina and the P equals 1.
Described image screen is the monitor of various television display or computer, comprises CRT, LCD, PDP, ELD, FED.
Described display horizontal positioned or vertical the placement.
Described grating screen is for removing the liquid crystal panel that LCD backlight is used.
Described grating screen is arranged on the place ahead or the rear of image screen, and the plane of grating screen and the plane of image screen are parallel to each other.
Spacing between described grating screen and the image screen is 0mm～100mm.
The present invention compares with prior art, has the following advantages and beneficial effect:
(1) grating screen of the present invention and image screen can be designed to any angle between 0 to 90 degree, the numerical value of a is determined apart from P by the point of the image screen point apart from T and grating screen, thereby solved the defective that produces serious light interference phenomena because of the plain distance coupling of the point of image screen in the prior art and light screen, make the display operate as normal, guarantee that bore hole watches the better effects of stereo-picture;
(2) display of the present invention can horizontal positioned or vertical the placement, when making people's eyes watch 2D image or 3D stereo-picture, can both reach viewing effect preferably;
(3) grating of the present invention screen can be arranged on image screen the place ahead or rear, and the rear that this grating screen the is placed on image screen grid screen of sharing the same light is positioned over image screen the place ahead and compares, and the stereo-picture that is generated highlights outside the screen more, and viewing effect is better.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2, Fig. 3 are grating screen grating linear array principle schematic of the present invention;
Fig. 4, Fig. 5 are region projection method schematic diagram of the present invention;
Fig. 6, Fig. 7 are subpoint coordinate Calculation schematic diagram of the present invention;
Fig. 8 is a reproduction stereo-picture schematic diagram of the present invention;
Fig. 9 produces the algorithm flow chart of a plurality of record cells for the present invention;
Figure 10 is at an angle a configuration schematic diagram between grating of the present invention screen and the image screen;
Figure 11, Figure 12 are placed on the subpoint coordinate Calculation schematic diagram at image screen rear for the grating screen;
Figure 13 represents the synoptic diagram of display screen horizontal positioned of the present invention;
Figure 14 represents the vertical synoptic diagram of placing of display screen of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, naked eye visible stereo image liquid crystal grating time-sharing display device comprises display, is provided with PC main frame 1, image screen 2 and the grating screen 3 of making graph card.Image screen 2 and grating screen 3 respectively with PC main frame 1 on be connected as graph card.Described is general computer graphic transaction card as graph card, can be presented at two frame figures synchronously on grating screen and the image screen.This makes graph card can be by 3 d object scanning instrument or artificial design, obtains the three-dimensional modeling data of the stereo-picture that comprises the three-dimensional coordinate of being had a few of representing object surface shape and color and gray scale.Described 3 d object scanning instrument comprises laser three-D object scanner, Medical Devices X-CT, RMI, B ultrasonic sonic apparatus, engineering surveying instrument; Described artificial design is meant the use graphics software, and for example 3DS MAX, MAYA etc. carry out stereo-image producing.
Described image screen then can be to have autoluminescence or have the various types of televisors of illuminator or the monitor of computer, comprises CRT, LCD, PDP, ELD, FED etc.Described grating screen then is the liquid crystal board that removes the LCD of backlight.Spacing between grating screen and the image screen is 0mm～100mm.
Shown in Fig. 2,3, make graph card and can shield at grating and demonstrate a raster pattern on 3, this raster pattern by can printing opacity uniformly-spaced and the straight line 4 (being called grid stroke) that is parallel to each other form, and it is vertical with horizontal direction, this raster pattern is also referred to as the grating linear array.The geometric properties of this grating linear array can be used raster data B[G (M), PH (I)] describe, wherein G (M) represents the density of grating linear array, M represents the some prime number order that the grating linear array is separated by between the line on the directions X, the phase place of PH (I) expression grating linear array, I is illustrated on the directions X grid stroke battle array integral body by the some prime number order of translation.Fig. 2 is for representing the situation when 5 somes elements show a grid stroke 4 on the grating screen 3, and this moment, whenever the plain order of point between adjacent two grid strokes 4 was M=5, I=0, and then the density of this grating linear array is G (5), and the phase place of grating linear array is PH (0).Fig. 3 represents that then 5 orders are presented at the out of phase situation of the grating linear array on the grating screen 3.The density of 5 grating linear arrays is G (5), but the phase place of grating linear array is respectively PH (0), PH (1), PH (2), PH (3), PH (4).
As shown in Figure 4, each the bar grid stroke 4 that a stereo-picture 6 is seen through grating screen 3 projects on the image screen 2, if without stint carries out projection to whole stereo-picture facing to every grid stroke 4, perspective view will overlap each other on image screen 2, can not produce correct image.For display image that can be correct, need utilize the region projection method to handle, as shown in Figure 5, described region projection method is exactly the grid stroke 4 on the relative grating screen 3, on image screen 2, mark off a between recording areas, b, c, d, e, f......, mark off respective projection space A, B, C, D, E, F...... in the place ahead of grating screen 3.Being to be center line with the grid stroke 4 opened on the grating screen 3 between described recording areas, is the rectangle that width delimited with adjacent gratings distance between centers of tracks T on image screen 2.Described projector space is meant and is in grating screen the place ahead, is the triangular prism shaped space of top margin with grid stroke 4.The three-dimensional modeling data point that is in the stereo-picture 6 in the A projector space can both see through in grid stroke 4 be projected between corresponding a recording areas, the three-dimensional modeling data point that is in the stereo-picture 6 in the B projector space can both see through in grid stroke be projected between corresponding b recording areas, and the rest may be inferred by analogy for it.The computer pointwise is calculated each three-dimensional modeling data point and is passed behind the grid stroke subpoint parameter in image screen 2, note the coordinate (Xb, Yb) and corresponding color Col, the gray scale L thereof of subpoint, thereby above-mentioned stereo-picture by stages is noted, obtain continuous anaglyph data W [Xb, Yb, L, Col].
Shown in Fig. 6,7, the calculating principle of the coordinate of subpoint (Xb, Yb) is: at first supposing has a luminous point A in the space, the A luminous point is created in the Xb value of subpoint A1, A2 on the image screen 2 and can be represented by following equation: Xb=X3-(Xa-X3) * Z0/ (Za-Z0), wherein:
Xa: the X coordinate of some A;
X3: the X coordinate of the grid stroke of numbering 3;
Za: some A is to the distance of image screen;
Z0: the distance between grating screen and the image screen;
Xb: the X coordinate of some A subpoint A1, A2 on image screen.
Yb: the Y coordinate of subpoint A1, the A2 of some A on image screen, Yb=Ya;
Ya: the Y coordinate of some A.
On grating screen 3, obtain raster pattern B[G (M), PH (I) by computer drawing].Adopt region projection method corresponding raster pattern B[G (M), PH (I) then], the stereo-picture by stages is calculated, obtain continuous anaglyph data W [Xb, Yb, L, Col].Raster pattern B and continuously disparity map W form the record cell p of stereo-picture, be designated as p{W[Xb, Yb, L, Col], B[G (M), PH (I)].
As shown in Figure 8, data in the record cell are input in the PC main frame 1, by making graph card the continuous disparity map W of the width of cloth among the record cell p is presented on the image screen 2, an amplitude grating figure B in the record cell is presented on the grating screen 3, the light source 7 of image screen 2 sees through the image of recording areas a, b, c, d, e, f in the space before grid stroke 4 on the grating screen 3 is mapped to grating screen 3, and beholder 8 is shielded 3 fronts at grating just can see the stereo-picture 9 of a reproduction in the space.
Single record cell can stereoscopic images displayed resolution depend mainly on the density G (M) of its grating linear array, the digital M among the G (M) is big more, the density of grating linear array is just more little, the resolution of the stereo-picture of reproduction is poor more, on the contrary on the contrary then.In order to improve the resolution of stereo-picture, then need to use many group records time-sharing approach to show stereo-picture.So-called many group records timesharing display packing just is meant need make many group records unit in advance, make the grating linear array phase place of the raster pattern in the adjacent cells differ the position of a grid stroke, by making graph card each record cell is shown at a high speed in proper order according to arranging sequence number then, just raster pattern in each record cell and continuous disparity map synchronously are presented at respectively on grating screen and the image screen, the stereo-picture that a plurality of record cells generate is the high speed Alternation Display in proper order, utilize the residual visual effect of eyes, watching and just can shield the front and see high-resolution stereo-picture at grating.
As Fig. 9 is the algorithm flow chart that produces a plurality of record cells by computing machine, by setting p the grating lattice that phase place is different, according to above-mentioned Fig. 6, Fig. 7 calculating principle to the coordinate (Xb, Yb) of subpoint, produces p record cell.
For example:
Get p=5 and produce 5 record cells, the density of each grating linear array is identical, is respectively:
G1(5)?G2(5)?G3(5)?G4(5)?G5(5)
But the phase place of each grating linear array is inequality, is respectively:
PH1(0)?PH2(1)?PH3(2)?PH4(3)?PH5(4)
Thereby draw the different raster pattern B of 5 phase places:
B1[G1(5)、PH1(0)]
B2[G2(5)、PH2(1)]
B3[G3(5)、PH3(2)]
B4[G4(5)、PH4(3)]
B5[G5(5)、PH5(4)]
Corresponding 5 raster patterns draw 5 corresponding disparity map W continuously:
W1[X，Y，L，Col]
W2[X，Y，L，Col]
W3[X，Y，L，Col]
W4[X，Y，L，Col]
W5[X，Y，L，Col]
5 raster pattern B and 5 continuous disparity map W form 5 record cell p respectively, and it comprises:
The record p1{W1[X, Y, L, Col], B1[G1 (5), PH1 (0)]
The record p2{W2[X, Y, L, Col], B2[G2 (5), PH2 (1)]
The record p3{W3[X, Y, L, Col], B3[G3 (5), PH3 (2)]
The record p4{W4[X, Y, L, Col], B4[G4 (5), PH4 (3)]
The record p5{W4[X, Y, L, Col], B4[G4 (5), PH4 (4)]
The PC main frame shows 5 record cell p at a high speed according to arranging sequence number by making graph card, the i.e. raster pattern B1 of 5 record cells, B2, B3, B4, B5 and continuous disparity map W1, W2, W3, W4, W5 synchronously is presented at respectively on grating screen and the image screen according to arranging sequence number, when time≤0.02 that each record cell shows second, utilize the residual visual effect of eyes, the stereo-picture of 5 record cell generations complements each other, and the beholder just can be shielded the front at grating and be seen resolution and the identical stereo-picture of grating screen resolution.
If record cell number p is other number, need then that each record cell shows time≤(0.1/p) second, just require the image screen of this display device and the frame rate of grating screen to be higher than (p/0.1) Hz, the beholder could be shielded the front at grating and be seen resolution and the identical stereo-picture of grating screen resolution.
As shown in figure 10, can be mutually between the X-axis of the X-axis of image screen 2 and grating screen 3 a in an angle, the span of angle a is 0 °≤a≤90 °.The numerical value of this a by the point of image screen apart from the point of T and grating screen apart from P decision (point of supposition image screen is apart from be T, and the some distance of grating screen is P).From interference of light principle can know when the highest common factor of T and P greater than 1 the time, place before and after two screens and rainbow will take place interfere and can not use.The way 1 of its solution is two screens of special facture, makes the highest common factor of its T, P equal 1, a=0 ° or a=90 ° of this moment; Its solution 2 is to make the X-axis of two screens become some angle of cut a, and a is met the following conditions: the highest common factor between T/sin (a) and the P equals 1.
For example: when T=P, make a=45 ° of then T/sin (45 °)/P=1.414.......
Figure 11, Figure 12 represent that grating screen 3 is placed on the subpoint coordinate Calculation schematic diagram at image screen 2 rears.Its computing method are identical with the computing method of Fig. 6, Fig. 7.The rear that this grating screen the is placed on image screen grid screen of sharing the same light is positioned over image screen the place ahead and compares, and the stereo-picture that this kind modes of emplacement is generated highlights outside the screen more.
Figure 13 has provided the situation when display is placed with horizontal direction, and Figure 14 has provided the situation when display is placed with vertical direction.Common indicator screen all is rectangle, long limit Wx, and minor face Wy, Wx is greater than Wy usually.Broadside becomes horizontal positioned to help watching when watching the 2D image, then is unfavorable for watching when watching the 3D solid figure, because the stereoscopic sensation of people's eyes is the sensitiveest in the dead ahead of eyes, therefore display of the present invention also can vertically be placed; When display was vertically placed, because the grating screen becomes vertical placement simultaneously, the PC host computer control made the grating linear array vertical with horizontal direction as graph card.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. naked eye visible stereo image liquid crystal grating time-sharing display device, comprise display and be provided with the PC main frame of making graph card, it is characterized in that, described display comprises image screen and grating screen, described image screen and grating screen all with as graph card link to each other, the X-axis of the X-axis of described image screen and grating screen is a in an angle, and the span of described angle a is 0 °≤a≤90 °.
2. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that, the numerical value of described a determines apart from P by the point of the image screen point apart from T and grating screen, and when a=0 ° or a=90 °, the highest common factor of T, P equals 1; When 0 °＜a＜90 °, the highest common factor between T/sina and the P equals 1.
3. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that described image screen is the monitor of television display or computer, comprises CRT, LCD, PDP, ELD, FED.
4. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that, described display horizontal positioned or vertical the placement.
5. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that, described grating screen is for removing the liquid crystal panel that LCD backlight is used.
6. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that, described grating screen is arranged on the place ahead or the rear of image screen, and the plane of grating screen and the plane of image screen are parallel to each other.
7. naked eye visible stereo image liquid crystal grating time-sharing display device according to claim 1 is characterized in that, the spacing between described grating screen and the image screen is 0mm～100mm.
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| CNB2007100314263A CN100533206C (en) | 2007-11-16 | 2007-11-16 | Naked eye visible stereo image liquid crystal grating time-sharing display device |
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| CNB2007100314263A CN100533206C (en) | 2007-11-16 | 2007-11-16 | Naked eye visible stereo image liquid crystal grating time-sharing display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513311A (en) * | 2012-09-24 | 2014-01-15 | Tcl集团股份有限公司 | Three-dimensional raster and naked eye three-dimensional display device |
| CN114594614A (en) * | 2018-12-11 | 2022-06-07 | 亚斯卡奈特股份有限公司 | Stereoscopic image display device and stereoscopic image display method |
-
2007
- 2007-11-16 CN CNB2007100314263A patent/CN100533206C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513311A (en) * | 2012-09-24 | 2014-01-15 | Tcl集团股份有限公司 | Three-dimensional raster and naked eye three-dimensional display device |
| CN103513311B (en) * | 2012-09-24 | 2016-04-13 | Tcl集团股份有限公司 | A kind of 3 D grating and bore hole 3D display device |
| CN114594614A (en) * | 2018-12-11 | 2022-06-07 | 亚斯卡奈特股份有限公司 | Stereoscopic image display device and stereoscopic image display method |
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| CN100533206C (en) | 2009-08-26 |
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