CN109343228B - Testing method and preparation method of visual separation membrane and visual separation membrane - Google Patents
Testing method and preparation method of visual separation membrane and visual separation membrane Download PDFInfo
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- CN109343228B CN109343228B CN201811403607.9A CN201811403607A CN109343228B CN 109343228 B CN109343228 B CN 109343228B CN 201811403607 A CN201811403607 A CN 201811403607A CN 109343228 B CN109343228 B CN 109343228B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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Abstract
The invention discloses a test method and a preparation method of a visual separation membrane and the visual separation membrane. The test method of the visual separation membrane comprises the steps of preparing the visual separation membrane according to the number N of preset parallax microstructures, wherein N is a positive integer; obtaining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1(ii) a According to L1And N determining the length P of a parallax microstructure along the arrangement direction of the parallax microstructures; and calculating the optimal viewing distance OVD of the view separation film according to the P. The technical scheme provided by the embodiment of the invention can accurately acquire the number of the parallax microstructures in the visual separation membrane, further accurately calculate the length of a single parallax microstructure along the arrangement direction of the parallax microstructures, and finally obtain the reliable optimal viewing distance OVD.
Description
Technical Field
The embodiment of the invention relates to the technical field of 3D display, in particular to a test method and a preparation method of a visual separation membrane and the visual separation membrane.
Background
The existing naked-eye 3D display technology is generally implemented based on a parallax barrier or a lenticular lens array, wherein an Optimal Viewing Distance (OVD) is an important parameter for evaluating a 3D display effect.
Taking the scheme of implementing 3D display based on the lenticular lens array as an example, the value is positively correlated with the width of a single lenticular lens, which refers to the length of the single lenticular lens in the arrangement direction of the lenticular lenses. To calculate the OVD value, the actual width of a single lenticular lens needs to be obtained first. The actual width of a single lenticular lens is obtained by dividing the total width of the lenticular lens array by the total number of lenticular lenses. The total width of the lenticular lens array can be obtained by measurement, but the total number of the lenticular lenses is difficult to count, and in the prior art, the total number of the lenticular lenses is usually estimated by dividing the total width of the lenticular lens array by the theoretical width of a single lenticular lens.
However, the lenticular lens array expands or contracts during the manufacturing process, that is, the theoretical width of a single lenticular lens is different from the actual width of a single lenticular lens, so that a value obtained by dividing the measured value of the total width of the lenticular lens array by the theoretical width of a single lenticular lens is a fraction, and an integer obtained by rounding the fraction or adding 1 to the integer may be an actual value of the total number of the lenticular lenses, that is, the total number of the lenticular lenses is uncertain, the actual width of a single lenticular lens is uncertain, and further, the calculated value of the OVD value may be inaccurate.
Disclosure of Invention
The invention provides a test method and a preparation method of a visual separation membrane and the visual separation membrane, which are used for accurately obtaining the number of parallax microstructures in the visual separation membrane, further accurately calculating the length of a single parallax microstructure along the arrangement direction of the parallax microstructures, and finally obtaining the reliable optimal viewing distance OVD.
In a first aspect, an embodiment of the present invention provides a method for testing a visual separation membrane, where the method includes:
preparing a visual separation membrane according to the number N of preset parallax microstructures; n is a positive integer;
obtaining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1；
According to L1And N determining the length P of a parallax microstructure along the arrangement direction of the parallax microstructures;
and calculating the optimal viewing distance OVD of the view separation film according to the P.
Furthermore, the N parallax microstructures are arranged in parallel to form a parallax grating or a cylindrical lens array.
Further, preparing the visual separation membrane according to the preset parallax microstructure number N, comprises:
providing a substrate, wherein the substrate comprises a parallax microstructure setting area, a first blank area and a second blank area, and the first blank area and the second blank area are positioned on two sides of the parallax microstructure setting area; the first blank region and the second blank region are both provided with at least one alignment mark;
preparing N parallax microstructures in the parallax microstructure setting area to form a visual separation membrane; the N parallax microstructures are arranged in parallel along a preset direction, and the preset direction is crossed with the extending direction of the parallax microstructures;
the first blank area and the second blank area are symmetrical with respect to the central line of the parallax microstructure setting area; the alignment mark of the first margin region and the alignment mark of the second margin region are symmetrical with respect to the center line of the parallax microstructure setting region.
Further, the total length L of the N parallax microstructures in the arrangement direction of the parallax microstructures is obtained1The method comprises the following steps:
obtaining the length L of the visual separation film and the length L of the first blank area along the arrangement direction of the parallax microstructures2And a second margin length L3；
According to L1＝L-L2-L3Determining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1。
In a second aspect, an embodiment of the present invention further provides a method for preparing a visual separation membrane, where the method includes:
preparing a visual separation membrane according to the number N of preset parallax microstructures; n is a positive integer;
providing a substrate, wherein the substrate comprises a parallax microstructure setting area, a first blank area and a second blank area, and the first blank area and the second blank area are positioned on two sides of the parallax microstructure setting area; the first blank region and the second blank region are both provided with at least one alignment mark;
preparing N parallax microstructures in the parallax microstructure setting area to form a visual separation membrane; the N parallax microstructures are arranged in parallel along a preset direction, and the preset direction is crossed with the extending direction of the parallax microstructures;
the first blank area and the second blank area are symmetrical with respect to the central line of the parallax microstructure setting area; the alignment mark of the first margin region and the alignment mark of the second margin region are symmetrical with respect to the center line of the parallax microstructure setting region.
Furthermore, the N parallax microstructures are arranged in parallel to form a parallax grating or a cylindrical lens array.
Further, the shape of the alignment mark is any one of a cross, a square, a circle, and a circle.
In a third aspect, an embodiment of the present invention further provides a view separation membrane, which is formed by using the method for manufacturing a view separation membrane according to the second aspect.
In a fourth aspect, embodiments of the present invention further provide a 3D display device, where the device includes the view separation film according to the third aspect.
According to the visual separation membrane testing method provided by the embodiment of the invention, the visual separation membrane is prepared according to the preset number N of the parallax microstructures, so that the number of the parallax microstructures in the visual separation membrane is determined and known, the length of a single visual separation microstructure along the arrangement direction is accurate, and the optimal viewing distance OVD obtained through final calculation is reliable.
Drawings
Fig. 1 is a flowchart of a method for testing a visual separation membrane according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for preparing a visual separation membrane according to an embodiment of the present invention;
fig. 3 is a schematic top view of a view separation film according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, in the view separation film based on the lenticular lens array in the prior art, the total number of the lenticular lenses cannot be accurately known, so that the width of a single lenticular lens cannot be accurately calculated, and the calculation of the optimal viewing distance OVD is inaccurate.
After analyzing the above problems, a person skilled in the art finds that the root cause of the above problems is that, in the manufacturing process of the existing view separation membrane based on the lenticular lens array, the person skilled in the art only processes the membrane according to the theoretical design values of the total width of the lenticular lens array and the width of a single lenticular lens, and does not consider the total number of lenticular lenses in the lenticular lens array, because of the engraving error and the influence of the subsequent process, the finally obtained total number of lenticular lenses is generally not the theoretical design value of the total width of the lenticular lens array divided by the theoretical design value of the width of the single lenticular lens, and thousands of lenticular lenses are provided in the lenticular lens array, and the counting is difficult, that is, the total number of lenticular lenses cannot be accurately known through calculation, nor can be accurately known through counting. In addition, the view separation membrane based on the view grating also has the above-mentioned problems, and the details are not described herein.
In view of the above, an embodiment of the present invention provides a method for testing a view separation membrane, and fig. 1 is a flowchart of the method for testing a view separation membrane according to the embodiment of the present invention, where the method includes:
s110, preparing a visual separation membrane according to the number N of preset parallax microstructures; n is a positive integer.
S120, acquiring the total length L of the N parallax microstructures in the arrangement direction of the parallax microstructures1。
S130, according to L1And N determines the length P of a parallax microstructure along the arrangement direction of the parallax microstructures.
And S140, calculating the optimal viewing distance OVD of the view separation film according to P.
The N parallax microstructures are arranged in parallel to form a parallax grating or a cylindrical lens array.
According to the method for testing the view separation membrane, provided by the embodiment of the invention, the number of the parallax microstructures in the view separation membrane is determined and known by preparing the view separation membrane according to the preset number N of the parallax microstructures, and the number of the parallax microstructures does not need to be obtained through conjecture in the prior art, so that the problem that the reliability of the finally calculated optimal viewing distance OVD is low due to the fact that the number of the parallax microstructures obtained through conjecture is uncertain in the prior art is solved, and the beneficial effect of improving the reliability of the optimal viewing distance OVD is achieved.
On the basis of the above technical solution, optionally, preparing the visual separation membrane according to the preset parallax microstructure number N includes:
providing a substrate, wherein the substrate comprises a parallax microstructure setting area, a first blank area and a second blank area, and the first blank area and the second blank area are positioned on two sides of the parallax microstructure setting area; the first blank region and the second blank region are both provided with at least one alignment mark;
preparing N parallax microstructures in the parallax microstructure setting area to form a visual separation membrane; the N parallax microstructures are arranged in parallel along a preset direction, and the preset direction is crossed with the extending direction of the parallax microstructures;
the first blank area and the second blank area are symmetrical with respect to the central line of the parallax microstructure setting area; the alignment mark of the first margin region and the alignment mark of the second margin region are symmetrical with respect to the center line of the parallax microstructure setting region.
Optionally, the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures is obtained1The method comprises the following steps:
obtaining the length L of the visual separation film and the length L of the first blank area along the arrangement direction of the parallax microstructures2And a second margin length L3
According to L1＝L-L2-L3Determining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1。
It should be noted that, a person skilled in the art may also directly measure the total length of the N parallax microstructures, or directly measure the total length of the N parallax microstructures and calculate the sum according to L1＝L-L2-L3The average of the calculated values obtained by calculation is taken as the total length of the N parallax microstructures, which is not limited in this application. Furthermore, according to L1And after the length P of the single parallax microstructure along the arrangement direction of the parallax microstructures is obtained through calculation, calculating the OVD according to a relational formula of the P and the optimal viewing distance OVD, and details are not repeated here.
Based on the above inventive concept, an embodiment of the present invention further provides a method for preparing a view separation film, and fig. 2 is a flowchart of the method for preparing the view separation film according to the embodiment of the present invention. The preparation method specifically comprises the following steps:
s210, providing a substrate, wherein the substrate comprises a parallax microstructure setting area, and a first blank area and a second blank area which are positioned at two sides of the parallax microstructure setting area; the first and second blank regions are provided with at least one alignment mark.
S220, preparing N parallax microstructures in the parallax microstructure setting area to form a visual separation membrane; the N parallax microstructures are arranged in parallel along a preset direction, and the preset direction is crossed with the extending direction of the parallax microstructures.
The visual separation membrane is prepared according to the number N of preset parallax microstructures, wherein N is a positive integer. The arrangement is such that, even if the actual total width of the parallax microstructures and the actual width of a single parallax microstructure may deviate from the theoretical design value due to engraving errors and subsequent process influences, the number N of the parallax microstructures is inevitably the theoretical design value, and there is no deviation.
The first blank area and the second blank area are symmetrical with respect to the central line of the parallax microstructure setting area; the alignment mark of the first margin region and the alignment mark of the second margin region are symmetrical with respect to the center line of the parallax microstructure setting region. The arrangement makes the whole visual separation membrane symmetrical about the central line of the visual separation membrane, namely, the visual separation membrane has no left and right parts, and the problem of poor 3D effect caused by left and right sticking of the visual separation membrane can be effectively avoided when the visual separation membrane is stuck with an LCD.
On the basis of the above technical solution, optionally, the N parallax microstructures are arranged in parallel to form a parallax barrier or a lenticular lens array.
If the N parallax microstructures are arranged in parallel to form the parallax grating, the parallax microstructures comprise shading elements and light-transmitting elements, and the shading elements and the light-transmitting elements are arranged in a vertical arrangement or an inclined arrangement; if the N parallax microstructures are arranged in parallel to form a cylindrical lens array, the parallax microstructures are cylindrical lenses, and the arrangement mode of the cylindrical lenses is vertical arrangement or inclined arrangement, wherein the vertical arrangement means that the arrangement direction of the parallax microstructures is parallel to or perpendicular to the side line of the substrate, and the inclined arrangement means that the arrangement direction of the parallax microstructures is not parallel to or perpendicular to the side line of the substrate but forms an included angle.
Optionally, the first margin area and the second margin area are provided with two alignment marks, and the four alignment marks are respectively located at corners of the view separation film. The arrangement enables the visual separation film to be aligned with the LCD more accurately, and the 3D display effect is improved.
Optionally, the shape of the alignment mark is any one of a cross, a square, a circle and a ring.
Optionally, the substrate is made of one or more of polyethylene terephthalate PET, amorphous polyethylene terephthalate APET, polycarbonate PC, polymethyl methacrylate PMMA, and glass.
It should be noted that, the sizes of the parallax microstructure setting area, the first margin area, the second margin area and the parallax microstructure, the parallax microstructure and the specific process of the alignment mark in the visual separation film may be set by those skilled in the art according to actual requirements, and the present application is not limited thereto.
Based on the above inventive concept, the embodiment of the invention also provides a visual separation membrane, which is formed by adopting any one of the above preparation methods of the visual separation membrane.
There are various specific methods for arranging the view separation film, and a typical example will be described in detail below, but the present application is not limited thereto. Fig. 3 is a schematic top view of a view separation film according to an embodiment of the present invention. The view separating film comprises a lenticular lens arrangement area 10, a first blank area 20 and a second blank area 30, wherein the lenticular lens array arrangement area is provided with N lenticular lenses 110, the lenticular lenses 110 have circular-arc-shaped lens surfaces, the N lenticular lenses 110 are arranged vertically, the first blank area 20 is provided with two alignment marks 210, the two alignment marks 210 are symmetrical with respect to a second center line 130 of the view separating film and are arranged away from the lenticular lens arrangement area 10, the second blank area 30 is provided with two alignment marks 310, and the two alignment marks 310 and the two alignment marks 210 in the first blank area 20 are symmetrical with respect to a first center line 120 of the view separating film.
The current measured width of the vision separating film is L, the current measured width of the lenticular lens array is L1, the current measured width of the first margin 20 is L2, and the current measured width of the second margin 30 is L3, L, L1, L2, and L3 may deviate from their respective theoretical design values and may vary with the expansion and contraction of the lenticular lenses, but the number N of the lenticular lenses is always the theoretical design value. Therefore, the current measured width of the lenticular lens array is L1 divided by N, which is the current width P of the lenticular lens, i.e. P is accurate, and the optimal viewing distance OVD calculated according to P is accurate.
The embodiment of the invention also provides a 3D display device which comprises any one of the visual separation membranes.
The 3D display device comprises any one of the above-mentioned view separation films, so that the 3D display device has corresponding functions and beneficial effects.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (4)
1. A method of testing a visual separation membrane, comprising:
preparing a visual separation membrane according to the number N of preset parallax microstructures; n is a positive integer;
obtaining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1；
According to L1And N determines the length of one parallax microstructure along the arrangement direction of the parallax microstructuresDegree P;
and calculating the optimal viewing distance OVD of the visual separation film according to P.
2. The method for testing a vision separation film according to claim 1, wherein the N parallax microstructures are arranged in parallel to form a parallax barrier or a lenticular lens array.
3. The method for testing a view separation membrane according to claim 1, wherein preparing a view separation membrane according to a preset number N of parallax microstructures comprises:
providing a substrate, wherein the substrate comprises a parallax microstructure setting area, a first blank area and a second blank area, and the first blank area and the second blank area are positioned on two sides of the parallax microstructure setting area; the first blank region and the second blank region are both provided with at least one alignment mark;
preparing N parallax microstructures in the parallax microstructure setting area to form a visual separation membrane; the N parallax microstructures are arranged in parallel along a preset direction, and the preset direction is crossed with the extending direction of the parallax microstructures;
wherein the first and second margin regions are symmetrical with respect to a center line of the parallax microstructure setting region; the alignment mark of the first margin region and the alignment mark of the second margin region are symmetrical with respect to the center line of the parallax microstructure setting region.
4. The method for testing a visual separation membrane according to claim 3, wherein the total length L of the N parallax microstructures in the arrangement direction of the parallax microstructures is obtained1The method comprises the following steps:
obtaining the length L of the visual separation film and the length L of the first blank area along the arrangement direction of the parallax microstructures2And the second margin length L3；
According to L1＝L-L2-L3Determining the total length L of the N parallax microstructures along the arrangement direction of the parallax microstructures1。
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| CN103091849A (en) * | 2011-11-08 | 2013-05-08 | 原创奈米科技股份有限公司 | Three-dimensional image display method |
| CN105301678A (en) * | 2014-07-16 | 2016-02-03 | Nlt科技股份有限公司 | Lenticular lens sheet, display apparatus and electronic equipment |
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| CN101144865A (en) * | 2006-09-15 | 2008-03-19 | 日本电气株式会社 | Optical element array, display device, and method of manufacturing display device, optical element array and optical element array molding die |
| US20110051240A1 (en) * | 2009-08-28 | 2011-03-03 | Unique Instruments Co.Ltd. | Parallax barrier 3d image display method |
| CN102323687A (en) * | 2011-09-14 | 2012-01-18 | 吉林省联信光学技术有限责任公司 | Naked eye 3D liquid crystal display and manufacturing method thereof |
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