CN101059600A - Zoom lens three-D display - Google Patents
Zoom lens three-D display Download PDFInfo
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- CN101059600A CN101059600A CN 200710022982 CN200710022982A CN101059600A CN 101059600 A CN101059600 A CN 101059600A CN 200710022982 CN200710022982 CN 200710022982 CN 200710022982 A CN200710022982 A CN 200710022982A CN 101059600 A CN101059600 A CN 101059600A
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Abstract
An image integrated solid display device uses dynamic adjustable-focus liquid lens array, wherein the lens array is composed of a multilayer sandwich liquid lens unit, the focus adjustment of the lens array is synchronized with the display frame speed of a two-dimension screen, to time-sharing realize different spatial solid images, use the vision holding effect of eye to improve the three-dimension depth feeding of solid image, and adjust the contact of two liquids in the liquid lens unit into a plane to switch between two-dimension and three-dimension display modes.
Description
Technical field
The present invention relates to a kind of three-dimensional stereo display technique, especially relate to a kind of image set of dynamically changeable focus liquid lens array that utilizes and become three-dimensional display.
Background technology
Mainly adopt the two dimensional surface display device to add that the mode of column prism (lenticular lens) or parallax parting bead (parallax barrier) delivers to right and left eyes respectively with different images based on the three-dimensional display of binocular parallax mode (binocular parallax) at present, because two eye patterns look like there are differences, thereby perceive 3 D stereoscopic image.The subject matter of this type of stereoscopic display device is: the observer must just can watch the convergent point (convergence) of stereo-picture, observer's eyes and eyes adjusting angle (accommodation) not to overlap at ad-hoc location, watches for a long time producing visual fatigue and sense of discomfort.
Image integrated (integral imaging) stereo display technique can overcome above-mentioned shortcoming.Image set become three-dimensional displaying principle the earliest by Lippmann proposed in 1908 (M.G.Lippmann, " Laphotographie integrale, " C.R.Acad.Sci.1908,146:446-451).Figure 1 shows that image set becomes the shooting and the displaying principle of stereo display technique.Take end and comprise capture lens array 2 and imageing sensor 4, capture lens array 2 focuses on imageing sensor 4 with the image of object 1, forms by many subimages 3 of independently taking and arranges the two dimensional image that forms.Display end is made up of two dimensional surface display 5 and demonstration lens arra 7, and two dimensional surface display 5 shows by the two dimensional image that shows that subimage 6 is formed, through showing the focal length of lens arra 7, at first image 8 of space 3 d objects reconstruction.Similar with hologram image, image set becomes stereo display technique to rebuild the real image of object at three dimensions, so the observer is not subjected to position limit, also can not produce visual fatigue.But because image set becomes the lens arra of three-dimensional display to adopt glass or photosensitive resin to make usually, its focal length of lens is fixed, the two-dimensional image information that therefore can't normally show the two dimensional surface display, and because the focal length of lens is fixing, the depth stereoscopic sensation of shown 3-D view is relatively poor.
Summary of the invention
Technical matters: become stereo display fixed focal length, the conversion that can not conveniently carry out the two and three dimensions display mode and the relatively poor problem of display image depth stereoscopic sensation in order to overcome image set, the invention provides a kind of Zoom lens three-D display, promptly utilize the image set of focus variable liquid lens array to become three-dimensional display, utilize this image set to become three-dimensional display can make things convenient for to such an extent that carry out the conversion of two and three dimensions display mode, and can effectively must improve the stereoscopic sensation of display image depth direction.
Technical scheme: the varifocal image set that technical scheme of the present invention is made up of two dimensional surface display and focus variable liquid lens array becomes three-dimensional display.The two dimensional surface display can be current all kinds of giant-screen flat-panel screens (for example, LCD, Plasma Display, rear-projection etc.), and the focus variable liquid lens array is then corresponding with a number of sub images with the parallel placement of display screen and each lens unit.In order to realize the zoom of lens, each liquid lens unit comprises a cavity, and the inside is full of the liquid of two kinds of mutual not mixings.Two kinds of liquid refractivities and electric conductivity are all inequality.One of them is a conducting liquid, and another one is nonpolar iknsulating liquid.Two kinds of mixing material density are identical, thereby overcome the influence of gravity to two kinds of liquid contact surface shapes.Lens unit comprises two electrodes, and one of them directly contacts with conducting liquid, and the another one electrode then covers insulation course.Cavity inner wall is made up of sidewall, antetheca and rear wall, is coated with hydrophobic layer (can increase extra insulation course if necessary) at the sidewall and the antetheca of cavity.Therefore when not adding external electric field, because capillary effect, the surface in contact of two kinds of liquid is the rotation symmetroid of nature, promptly forms a liquid lens unit.When adding different voltage between two electrodes, because electricity wetting (electrowetting) effect, the curvature of two liquid contact surfaces will change.Just can realize changing the focal length of liquid lens by adjusting voltage.
In order to realize the conversion of two and three dimensions display mode, technical solution of the present invention is by adjusting the impressed voltage between two electrodes in liquid lens unit, make the surface in contact of two liquid be the plane, this moment, the focus variable liquid lens array did not produce refraction to light, thereby human eye can clearly be seen the two-dimensional image information that the two dimensional surface display is shown.Particularly, during two dimensional mode, the surface of contact of two kinds of liquid is the 3rd liquid level 21, i.e. plane in the liquid lens unit cavity; During the 3-D display pattern, the surface of contact of two kinds of liquid is the curved surface of adjustable focal length in the liquid lens unit cavity, i.e. first liquid level 19 or second liquid level 20.
In order to strengthen the stereoscopic sensation of depth direction, technical scheme of the present invention is, according to the picture material that shows, the variation of focus variable liquid lens array focal length and the display frame rate of two dimensional surface display are synchronous, periodically get picture material and the liquid lens focal length that synchronous change two dimensional surface display shows, thereby the time-sharing format of utilization is at space y direction diverse location Alternation Display three-dimensional image.Concrete principle when the liquid lens focal length is big, as first focal length 11 ' among Fig. 2, according to the displaying contents of two dimensional surface display 5, forms the 3rd image 10 as shown in Figure 2; Change the focal length of liquid lens, as second focal length 11 among Fig. 2 ", change the displaying contents of two dimensional surface display 5 simultaneously, form second image 9.When continuous Alternation Display second image 9 and the 3rd image 10, because the persistence of vision effect of human eye, human eye perceives the three-dimensional image that a three-dimensional depth information has increased.
Beneficial effect: can realize that image set becomes quick, the convenient conversion of three-dimensional display between the two and three dimensions display mode, can strengthen the stereoscopic sensation that image set becomes three-dimensional display depth direction, can adjust the focal length of liquid lens continuously, apace.In a preferred embodiment of the invention, provide multilayer sandwich liquid lens cellular construction, it realizes simple, and cost is low.
Description of drawings
Fig. 1 takes and displaying principle for image set becomes stereo display technique;
Fig. 2 is the focus variable liquid lens principle of work;
Fig. 3 is the liquid lens unit first embodiment structural map;
Fig. 4 is the liquid lens unit second embodiment structural map;
Fig. 5 is first kind of sectional view of the AA ' section of Fig. 3;
Fig. 6 is first kind of sectional view of the BB ' section of Fig. 3;
Fig. 7 is second kind of sectional view of the AA ' section of Fig. 3;
Fig. 8 is second kind of sectional view of the BB ' section of Fig. 3;
Fig. 9 is the third sectional view of the AA ' section of Fig. 3;
Figure 10 is the third sectional view of the BB ' section of Fig. 3.
Have among the above figure: object 1, capture lens array 2, take subimage 3, imageing sensor 4, two dimensional surface display 5, show subimage 6, show lens arra 7, first image 8, second image 9, the 3rd image 10, focus variable liquid lens array 11, first focal length, 11 ', the second focal length 11 "; first hydrophobic layer 12; second hydrophobic layer 13; cut off 14 in the middle of first; the 3rd hydrophobic layer 15; the 4th hydrophobic layer 16, rear wall transparency electrode 17, back transparency carrier 18, first liquid level 19, second liquid level 20, the 3rd liquid level 21, nonpolar iknsulating liquid 22, conducting liquid 23, antetheca transparency electrode 24, the 5th hydrophobic layer 25, cut off 26 in the middle of second, the first liquid lens unit 27, the second liquid lens unit 28, preceding transparency carrier 29.
Embodiment
Figure 1 shows that image set becomes three-dimensional displaying principle figure.
Figure 2 shows that Zoom lens three-D display schematic diagram of the present invention, it comprises two dimensional surface display 5 and focus variable liquid lens array 11, two dimensional surface display 5 can be current all kinds of giant-screen flat-panel screens (for example, LCD, Plasma Display, rear-projection etc.), first and second preferred embodiments of focus variable liquid lens array 11 are described in detail respectively in Fig. 3 and Fig. 4.
In preferred embodiment shown in Figure 3, the first liquid lens unit 27 is a kind of multilayer sandwich structure, comprise: transparency carrier 29 before uppermost, for example adopt thin flat plate glass, cover first hydrophobic layer 12 on the preceding transparency carrier 29, for example constitute by TEFLON AF1600, the liquid lens unit first in the middle of cut off 14 and constitute by the mesh sheet metal, metal material can adopt the indium steel, metal otter board is covered fully by one deck hydrophobic layer, as second hydrophobic layer 13 among Fig. 3, the 3rd hydrophobic layer 15, the 4th hydrophobic layer 16, hydrophobic layer also plays insulation course (also can increase by a layer insulating between hydrophobic layer and metal otter board) simultaneously, below partition 14 in the middle of first is metacoxal plate, form by rear wall transparency electrode 17 and back transparency carrier 18, back transparency carrier 18 can be used thin flat plate glass, rear wall transparency electrode 17 can be by tin indium oxide, be that ITO constitutes, rear wall transparency electrode 17 directly contacts with conducting liquid 23, above-mentioned multilayer sandwich structure has formed many independently liquid lenss unit cavity, comprise two kinds of liquid in each cavity, conducting liquid 23, as brine solution, with nonpolar iknsulating liquid 22, as mineral oil, when cut off in the middle of first 14 and rear wall transparency electrode 17 between in addition during appropriate voltage, because electric wetting action, the angle of two kinds of liquid contact surfaces and sidewall can change, i.e. first liquid level 19, be changed to plane with impressed voltage as the 3rd liquid level 21, or as the curved surface of second liquid level 20, if the refractive index of nonpolar iknsulating liquid 22 is greater than conducting liquid 23, when then being in first liquid level, 19 states is concavees lens, when being in second liquid level 20, be convex lens, when being in the 3rd liquid level 21, lens arra does not produce refraction to light, promptly is converted to two dimensional mode this moment.
The focus variable liquid lens array 11 of preferred embodiment shown in Figure 3 can have multiple arrangement mode, below three kinds of embodiments of diagram 5-10 explanation.
Fig. 5 is first kind of structural drawing in Fig. 3 AA ' cross section, and the first liquid lens unit 27 is cylindric, and the ranks arranged that is square.
Fig. 6 is first kind of structural drawing in Fig. 3 BB ' cross section, it is corresponding to cut off the circular hole position that the 14 and the 3rd hydrophobic layer 15 comprised in the middle of among circular hole position in the rear wall transparency electrode 17 and Fig. 5 first, the ranks arranged that is square, and the Circularhole diameter that comprised less than the 3rd hydrophobic layer 15 of the Circularhole diameter that comprised of rear wall transparency electrode 17.
Fig. 7 is second kind of structural drawing in Fig. 3 AA ' cross section, and the first liquid lens unit 27 is cylindric, and the lens arra parity rows staggers and is the arrangement of product word shape.
Fig. 8 is second kind of structural drawing in Fig. 3 BB ' cross section, it is corresponding to cut off the circular hole position that the 14 and the 3rd hydrophobic layer 15 comprised in the middle of among circular hole position in the rear wall transparency electrode 17 and Fig. 7 first, the lens arra parity rows staggers and is product word shape and arranges, and the Circularhole diameter that comprised less than the 3rd hydrophobic layer 15 of the Circularhole diameter that comprised of rear wall transparency electrode 17.
Fig. 9 is the third structural drawing in Fig. 3 AA ' cross section, and the first liquid lens unit 27 is symmetrical hexagon, and lens arra is honeycomb arrangement.
Figure 10 is the third structural drawing in Fig. 3 BB ' cross section, rear wall transparency electrode 17 is for comprising the reticulate texture of circular hole, it is corresponding to cut off the hexagon position that the 14 and the 3rd hydrophobic layer 15 comprised in the middle of among circular hole position and Fig. 9 first, lens arra is honeycomb arrangement, and the Circularhole diameter that comprised of rear wall transparency electrode 17 is less than the diameter in the 3rd hydrophobic layer 15 maximum inscribed circle holes.
Figure 4 shows that second preferred embodiment of the present invention, the second liquid lens unit 28 is a kind of multilayer sandwich structure, be preceding transparency carrier 29 topmost, thin flat plate glass for example, cover antetheca transparency electrode 24 on the preceding transparency carrier 29, can adopt the ITO material, cover the 5th hydrophobic layer 25 on the antetheca transparency electrode 24 again, for example constitute by TEFLONAF1600, cutting off 26 in the middle of second is netted transparent panel, can adopt glass or photosensitive resin material to constitute, its inwall covers the 3rd hydrophobic layer 15 and (cuts off 26 in the middle of second and also can adopt sheet metal, but need to wrap up fully) with insulation course, metacoxal plate is made up of back transparency carrier 18 and rear wall transparency electrode 17, back transparency carrier 18 can adopt glass or photosensitive resin, rear wall transparency electrode 17 can adopt ITO, above-mentioned multilayer sandwich structure has formed many independently liquid lenss unit cavity, comprise two kinds of liquid in each cavity, conducting liquid 23, as brine solution, with nonpolar iknsulating liquid 22, as mineral oil, when between antetheca transparency electrode 24 and rear wall transparency electrode 17 in addition during appropriate voltage, because electric wetting action, the angle of liquid contact surface and sidewall can change, i.e. first liquid level 19, be changed to plane with impressed voltage as the 3rd liquid level 21, or as the curved surface of second liquid level 20, if the refractive index of nonpolar iknsulating liquid 22 is concavees lens when, then being in first liquid level, 19 states greater than conducting liquid 23, when being in second liquid level 20, be convex lens, when being in the 3rd liquid level 21, lens arra does not produce refraction to light, promptly is converted to two dimensional mode this moment.
The focus variable liquid lens array 11 of preferred embodiment shown in Figure 4 can have multiple arrangement mode, among Fig. 4 among CC ' cross-section structure and Fig. 3 AA ' section similar, the second liquid lens unit 28 can be circular hole or symmetrical hexagon, concrete shape and Fig. 5,7,9 unanimities, only need the first middle partition 14 of metal material is changed into the second middle partition 26 of transparent glass material, DD ' cross-section structure is consistent with BB ' cross-section structure among Fig. 3 among Fig. 4, concrete shape and Fig. 6,8,10 unanimities, among Fig. 4 among EE ' cross-section structure and Fig. 3 BB ' cross-section structure similar, just the 5th hydrophobic layer 25 has been filled in circular hole inside, concrete shape and Fig. 6,8,10 is similar.
Fig. 3 and the first and second lens unit structures shown in Figure 4 can realize focal length continually varying convex lens and concavees lens, and two kinds of two dimensional mode that liquid contact surface is the plane.Be to realize the relief enhancing of stereo-picture depth direction, the preferred embodiments of the present invention are, select the lens arra of Fig. 3 or Fig. 4 for use, are the focal length that synchronizing signal changes liquid lens with the frame per second of two dimensional surface display device, and two fixed focal length f for example are set
1, f
2, alternately realize focal length of lens f according to the display frame rate cycle
1And f
2, promptly working as focal length is f
1The time, second image 9 among screen display such as Fig. 2 is when focal length is f
2The time, the 3rd image 10 among screen display such as Fig. 2 also can further be increased to fixed focal length 3～5, thereby further strengthens the depth stereoscopic sensation of image.
The preferred embodiment of the present invention, focal length continually varying convex lens both can have been used, also can use focal length continually varying concavees lens, the existing artifact problem of the integrated stereo display of automatic compensating images when adopting concavees lens, and when adopting convex lens, need additionally compensation, can increase the concavees lens array of one deck fixed focal length again, lens arra can adopt photosensitive resin or glass to make, or adopts the general universal method of signal Processing.
Claims (5)
1. Zoom lens three-D display, it is characterized in that: this three dimensional display is made up of two dimensional surface display (5) and focus variable liquid lens array (11); The focal length of focus variable liquid lens array (11) changes synchronously with display image content, and the mode that adopts timesharing realizes the enhancing of stereo-picture depth feelings at space y direction diverse location Alternation Display 3 D stereo second image (9), the 3rd image (10); Focus variable liquid lens array (11) forms the 3rd liquid level (21) by adjusting voltage, realizes the demonstration of two dimensional image pattern; Focus variable liquid lens array (11) is made up of many liquid lenss unit, the first liquid lens unit (27) is a multilayer sandwich structure, comprise preceding transparency carrier (29), cut off in the middle of the back transparency carrier (18) and first (14), medial surface at preceding transparency carrier (29) is provided with first hydrophobic layer (12), be provided with second hydrophobic layer (13) at first hydrophobic layer (12) and middle the partition between (14), medial surface at back transparency carrier (18) is provided with rear wall transparency electrode (17), be provided with the 4th hydrophobic layer (16) in rear wall transparency electrode (17) and middle the partition between (14), the inwall that cuts off (14) in the middle of first is provided with the 3rd hydrophobic layer (15); Include nonpolar iknsulating liquid (22) and conducting liquid (23) in the first liquid lens unit (27); On-load voltage can be adjusted the focal length of liquid lens unit between the rear wall transparency electrode (17) and the first middle partition (14), realizes the integrated 3-D display of image.
2. Zoom lens three-D display according to claim 1, it is characterized in that: described liquid lens unit further is provided with antetheca transparency electrode (24) at the medial surface of preceding transparency carrier (29) and covers the 5th hydrophobic layer (25) again on antetheca transparency electrode (24), medial surface in rear wall transparency electrode (18) is provided with rear wall transparency electrode (17), cut off in the middle of between rear wall transparency electrode (17) and the 5th hydrophobic layer (25), being provided with second (26), the inwall that cuts off (26) in the middle of second is provided with the 3rd hydrophobic layer (15), in preceding transparency carrier (29), back transparency carrier (18), cut off in (26) formed cavity in the middle of second and comprise nonpolar iknsulating liquid (22) and conducting liquid (23), form the second liquid lens unit (28), on-load voltage can be adjusted the focal length of liquid lens unit between antetheca transparency electrode (24) and rear wall transparency electrode (17), realizes the integrated 3-D display of image.
3. Zoom lens three-D display according to claim 1 and 2 is characterized in that: the first liquid lens unit (27) in the focus variable liquid lens array (11) or the arrangement mode of the second liquid lens unit (28) are: square matrix or parity rows stagger and are product word shape matrix or are cellular matrix.
4. Zoom lens three-D display according to claim 3 is characterized in that: the cavity of the first liquid lens unit (27) or the second liquid lens unit (28) is cylindric or the cross section is symmetrical hexagonal column.
5. Zoom lens three-D display according to claim 1 and 2 is characterized in that: cutting off (14) in the middle of described first is the conducting metal web plate; Cutting off (26) in the middle of second be netted transparent panel, or the metal otter board that wraps up with insulation course.
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| CNB2007100229824A CN100483184C (en) | 2007-05-29 | 2007-05-29 | Zoom lens three-D display |
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| CNB2007100229824A CN100483184C (en) | 2007-05-29 | 2007-05-29 | Zoom lens three-D display |
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