CN114280810A - 3D screen with multilayer lenticular grating - Google Patents
3D screen with multilayer lenticular grating Download PDFInfo
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- CN114280810A CN114280810A CN202210083808.5A CN202210083808A CN114280810A CN 114280810 A CN114280810 A CN 114280810A CN 202210083808 A CN202210083808 A CN 202210083808A CN 114280810 A CN114280810 A CN 114280810A
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Abstract
The invention discloses a 3D screen with multiple layers of lenticular lens gratings, which comprises a display pixel unit and a lenticular lens grating unit, wherein the lenticular lens grating unit is arranged in front of the display pixel unit at a certain distance L, receives light of the display pixel unit and performs polymerization emission, the lenticular lens grating unit comprises multiple layers of lenticular lens grating layers which are sequentially overlapped and fixed together, each lenticular lens grating layer performs polymerization emission on the emitted light, micro lenses on the multiple layers of lenticular lens grating layers are equal in length and width and correspond in position, and the distance L is smaller than the focal length of each lenticular lens grating layer. According to the invention, the multilayer lens grating layer capable of condensing light is used for forming the lens grating unit at the front side of the display pixel unit, the equivalent focal length of the multilayer lens grating layer is smaller, the distance between the display pixel unit and the lenticular lens grating is effectively shortened, and the thickness and the weight of the whole 3D screen are reduced.
Description
Technical Field
The invention relates to an optical imaging device, in particular to a lenticular grating naked-eye 3D display module.
Background
The lenticular lens is the most mature technology with excellent effect in the 3D display market. When the cylindrical lens grating is applied to naked eye 3d display, the cylindrical lens grating has the advantages of high light transmittance, continuous light change and natural visual angle switching relative to the slit grating, but the crosstalk rate is often higher relative to the slit grating when fewer viewpoints are used. Conventionally, since the distance between the display pixel light source and the naked eye 3D grating cannot be smaller than the cylinder focal length, in order to make the thickness between the display pixel light source and the naked eye 3D grating sufficiently small, the cylinder focal length of the naked eye 3D grating should be reduced as much as possible. However, since the width of the grating is fixed, generally the number of pixel width x view points, the maximum radian of the lenticular grating is a semicircle, and the refractive index of the lenticular material is generally 1.4 to 1.6, the lenticular focal length of the naked-eye 3D grating cannot be too small, and the distance L between the display pixel layer and the lenticular grating must be larger than the focal length f of the lenticular grating, so that a corresponding light-removing material must be filled between the display pixel layer and the lenticular grating, which not only makes the lenticular naked-eye 3D display impossible to be made thin, but also makes the display heavy.
For naked eye 3D stereoscopic screens, especially large naked eye stereoscopic screens, the requirements for reduction and thinning are increasing, so that a 3D screen capable of solving the above problems is urgently needed.
Disclosure of Invention
The invention aims to provide a 3D screen with a multi-layer lenticular lens grating, which can effectively reduce the distance between a display pixel unit and the lenticular lens grating and reduce the thickness and the weight of the 3D screen.
In order to achieve the purpose, the invention discloses a 3D screen with multiple layers of lenticular lenses, which comprises a display pixel unit and a lenticular lens unit, wherein the lenticular lens unit is arranged in front of the display pixel unit at a certain distance L, receives light of the display pixel unit and performs polymerization emission, the lenticular lens unit comprises multiple layers of lenticular lens layers which are sequentially overlapped and fixed together, each lenticular lens layer performs polymerization emission on the emitted light, micro lenses on the multiple layers of lenticular lens layers are equal in length and width and correspond in position, and the distance L is smaller than the focal length of each lenticular lens layer.
According to the invention, the multilayer lens grating layer capable of condensing light is used for forming the lens grating unit at the front side of the display pixel unit, the equivalent focal length of the multilayer lens grating layer is smaller, the distance between the display pixel unit and the lenticular lens grating is effectively shortened, and the thickness and the weight of the whole 3D screen are reduced.
Preferably, the minimum distance between two adjacent lenticular grating layers is 200 μm.
Preferably, the micro lens is a cylindrical lens or a convex lens.
Preferably, the lenticular lens layer includes a first lenticular lens layer and a second lenticular lens layer, the first lenticular lens layer has a focal length f1 and is disposed in front of the display pixel units and performs primary polymerization on the light emitted by the display pixel units; the second lenticular lens grating layer has a focal length f2 and is arranged in front of the second lenticular lens grating layer to perform secondary polymerization on the light emitted by the first lenticular lens grating layer and emit the light, and the distance L is greater than (f1 x f2)/(f1+ f 2).
Preferably, an adhesive layer having a thickness of L is disposed between the display pixel unit and the lenticular unit.
Specifically, the laminating layer comprises a glass layer and glue layers arranged on two sides of the glass layer, the glass layer is pasted on the display pixel unit through one glue layer, and the first layer is pasted on the glass layer through the other glue layer.
Preferably, a low refractive index glue layer is filled between adjacent lenticular grating layers, and the lenticular grating layer at the outermost layer is exposed outside or encapsulated in the low refractive index glue layer.
Preferably, the focal lengths of the lenticular lens layers are the same or different, and the radians of the lenticular lens layers are the same or different.
Preferably, the micro lenses in each lenticular lens layer face or face away from the display pixel unit, and the micro lenses in adjacent lenticular lens layers face the same direction, are arranged oppositely, or are arranged oppositely.
Preferably, the micro lenses of the two adjacent lenticular lens layers are back to back and are disposed on the same substrate, so that the two adjacent lenticular lens layers are in an integrated structure.
Drawings
Fig. 1 is a structural view of a 3D screen having a multi-layered lenticular lens according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a 3D screen with a multi-layered lenticular grating according to the present invention.
Fig. 3 is a structural view of a 3D screen having a multi-layered lenticular lens according to a second embodiment of the present invention.
Fig. 4 is a structural diagram of a 3D screen having a multi-layered lenticular lens according to a third embodiment of the present invention.
Fig. 5 is a structural diagram of a 3D screen having a multi-layered lenticular lens according to a fourth embodiment of the present invention.
Fig. 6 is a structural diagram of a 3D screen having a multi-layered lenticular lens according to a fifth embodiment of the present invention.
Fig. 7 is a structural diagram of a 3D screen having a multi-layered lenticular lens according to a sixth embodiment of the present invention.
Fig. 8 is a structural diagram of a 3D screen having a multi-layered lenticular lens according to a seventh embodiment of the present invention.
Fig. 9 is a structural view of a 3D screen having a multi-layered lenticular lens according to an eighth embodiment of the present invention.
Fig. 10 is a structural view of a 3D screen having a multi-layered lenticular lens according to a ninth embodiment of the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 and 2, the invention discloses a 3D screen 100 with a multi-layer lenticular lens, including a display pixel unit 10 and a lenticular lens unit 20, where the lenticular lens unit 20 is disposed in front of the display pixel unit 10 at a certain distance L, receives light from the display pixel unit 10 and emits the light in a converging manner, the lenticular lens unit 20 includes multi-layer lenticular lens layers 21 and 22 sequentially stacked and fixed together, each lenticular lens layer 21 and 22 converges and emits the emitted light, micro lenses on the multi-layer lenticular lens layers 21 and 22 have equal length and width and corresponding positions, and the distance L is smaller than the focal length of each lenticular lens layer 21 and 22.
The lenticular lens layer comprises a first lenticular lens layer 21 and a second lenticular lens layer 22, the focal length of the first lenticular lens layer 21 is f1, the first lenticular lens layer is arranged in front of the display pixel unit, and the first lenticular lens layer polymerizes light emitted by the display pixel unit 10. The second lenticular lens layer 22 has a focal length f2 and is disposed in front of the second lenticular lens layer 22 to perform secondary polymerization on the light emitted from the first lenticular lens layer 21 and emit the light. In this embodiment, there are two lenticular lens layers: the number of the lenticular lens layers is not limited to 2, and may be three or more, four or more, and the like. The ideal value of the equivalent focal length after the first lenticular lens layer 21 and the second lenticular lens layer 22 are stacked (f1 f2)/(f1+ f2), and of course, the equivalent focal length is inevitably slightly larger than the ideal value because a certain distance is inevitably existed between the first lenticular lens layer 21 and the second lenticular lens layer 22. The distance L between the display pixel unit 10 and the first lenticular lens layer 21 is larger than the equivalent focal length formed by the first lenticular lens layer 21 and the second lenticular lens layer 2, and is larger than (f1 multiplied by f2)/(f1+ f 2).
In this embodiment, f1 is f2, and the ideal value of the equivalent focal length is f 1/2. The radians of the first lenticular lens layer 21 and the second lenticular lens layer 22 are the same, and of course, the focal lengths of the adjacent lenticular lens layers may be different, and the radians may also be different.
In this embodiment, the lenticulars of the first lenticular lens layer 21 and the second lenticular lens layer 22 are both disposed facing away from the display pixel unit 10.
In the present embodiment, the minimum distance between the first lenticular lens layer 21 and the second lenticular lens layer 22 is 200 μm.
In this embodiment, the micro lens is a lenticular lens, and the lenticular lens layers 21 and 22 are lenticular lens gratings. Of course, the micro-lens may be other light-gathering micro-lenses such as a convex lens.
With continued reference to fig. 1, an adhesive layer 30 having a thickness L is disposed between the display pixel unit 10 and the first lenticular lens layer 21. Specifically, the laminating layer 30 includes a glass layer and glue layers disposed on two sides of the glass layer, the glass layer is adhered to the display pixel unit 10 through one glue layer, and the first lenticular lens layer 21 is adhered to the glass layer through another glue layer.
With reference to fig. 1, a low refractive index glue layer 40 is filled between the first lenticular lens layer 21 and the second lenticular lens layer 22, in this embodiment, the low refractive index glue layer 40 is formed by curing UV glue, and of course, glue made of other materials may also be used to form the low refractive index glue layer 40.
The second lenticular grating layer 22 at the outermost layer is exposed outside, and is not filled outside the second lenticular grating layer 22, so that the equivalent focal length of the lenticular grating unit 20 is effectively reduced, and the processing cost is reduced.
Referring to fig. 3, a second embodiment of the present invention is different from the first embodiment, in this embodiment, a low refractive index glue layer 50 is further disposed on the outer side of the second lenticular grating layer 22 at the outermost layer, so as to encapsulate the second lenticular grating layer 22 therein, which not only can effectively protect the lenticular grating layer 22 at the outermost layer, but also can make the imaging distance longer, and increase the screen depth of field.
In this embodiment, the UV glue is used as the low refractive index glue layer 50 after being cured, and of course, the low refractive index glue layer 50 may also be made of glue made of other materials.
Referring to fig. 4, a third embodiment of the present invention is different from the first embodiment, in which the focal lengths of the first lenticular lens layer 21 and the second lenticular lens layer 22' are different and the radians are different.
Referring to fig. 5, a fourth embodiment of the present invention is different from the first embodiment, in this embodiment, the lenticular lens of the first lenticular lens layer 21 is disposed away from the display pixel unit 10, the lenticular lens of the second lenticular lens layer 22 is disposed toward the display pixel unit 10, and the lenticular lens of the first lenticular lens layer 21 and the lenticular lens of the second lenticular lens layer 22 are disposed opposite to each other.
Referring to fig. 6, a fifth embodiment of the present invention is different from the first embodiment, in this embodiment, the lenticular lens of the first lenticular lens layer 21 is disposed away from the display pixel unit 10, the lenticular lens of the second lenticular lens layer 22 is disposed away from the display pixel unit 10, and the lenticular lens of the first lenticular lens layer 21 and the lenticular lens of the second lenticular lens layer 22 are disposed in the same direction.
Referring to fig. 7, a sixth embodiment of the present invention is different from the first embodiment, in this embodiment, the lenticular lens of the first lenticular lens layer 21 is disposed toward the display pixel unit 10, the lenticular lens of the second lenticular lens layer 22 is disposed opposite to the display pixel unit 10, and the lenticular lens of the first lenticular lens layer 21 and the lenticular lens of the second lenticular lens layer 22 are disposed opposite to each other, so that not only is the processing difficulty low, which is convenient to improve the accuracy of the first lenticular lens layer 21 and the second lenticular lens layer 22, but also the substrate plane of the first lenticular lens layer 21 is opposite to the substrate plane of the second lenticular lens layer 22, which is convenient for positioning and adhering during composition. Of course, the first lenticular lens layer 21 and the second lenticular lens layer 22 may also share one substrate, that is, the first lenticular lens layer 21 and the second lenticular lens layer 22 are disposed on two opposite sides of the same substrate, and the first lenticular lens layer 21 and the second lenticular lens layer 22 are an integral structure.
Referring to fig. 8, a seventh embodiment of the present invention is different from the fifth embodiment, in this embodiment, the focal lengths of the first lenticular lens layer 21 and the second lenticular lens layer 22' are different, and the radians of the cylindrical lenses are different.
Referring to fig. 9, an eighth embodiment of the present invention is different from the sixth embodiment, in this embodiment, the first lenticular lens layer 21 and the second lenticular lens layer 22' share one substrate, that is, are disposed on two opposite sides of the same substrate, and the first lenticular lens layer 21 and the second lenticular lens layer 22 are an integral structure.
Referring to fig. 10, a ninth embodiment of the present invention is different from the above-mentioned embodiments, in this embodiment, the lenticular lens layer further includes a third lenticular lens layer 23 fixed on the outer side of the second lenticular lens layer 22, the third lenticular lens layer 23 focuses light focused by the second lenticular lens layer 22 for three times and outputs the light, the first lenticular lens layer 21 and the second lenticular lens layer 22 are disposed oppositely, and the third lenticular lens layer 23 and the second lenticular lens layer 22 are disposed oppositely.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. A3D screen with multilayer lenticular lens is characterized in that: the method comprises the following steps:
a display pixel unit;
the lenticulation unit is arranged in front of the display pixel unit at a certain distance L, receives the light of the display pixel unit and performs polymerization and ejection, and comprises a plurality of lenticulation layers which are sequentially overlapped and fixed together, each lenticulation layer performs polymerization and ejection on the incident light, the micro lenses on the lenticulation layers are equal in length and width and correspond in position, and the distance L is smaller than the focal length of each lenticulation layer.
2. 3D screen according to claim 1, characterized in that: the minimum distance between two adjacent lenticular grating layers is 200 μm.
3. 3D screen according to claim 1, characterized in that: the micro lens is a cylindrical lens or a convex lens.
4. 3D screen according to claim 1, characterized in that: the lenticular grating layer comprises a first lenticular grating layer and a second lenticular grating layer, the focal length of the first lenticular grating layer is f1, the first lenticular grating layer is arranged in front of the display pixel unit, and the first lenticular grating layer is used for carrying out primary polymerization on light emitted by the display pixel unit; the second lenticular lens grating layer has a focal length f2 and is arranged in front of the second lenticular lens grating layer to perform secondary polymerization on the light emitted by the first lenticular lens grating layer and emit the light, and the distance L is greater than (f1 x f2)/(f1+ f 2).
5. 3D screen according to claim 1, characterized in that: and an adhesive layer with the thickness of L is arranged between the display pixel unit and the lenticular unit.
6. The 3D screen according to claim 5, characterized in that: the laminating layer comprises a glass layer and glue layers arranged on two sides of the glass layer, the glass layer is pasted on the display pixel unit through one glue layer, and the first layer is pasted on the glass layer through the other glue layer.
7. 3D screen according to claim 1, characterized in that: and a low-refractive-index glue layer is filled between every two adjacent lens grating layers, and the outermost lens grating layer is exposed outside or packaged in the low-refractive-index glue layer.
8. 3D screen according to claim 1, characterized in that: the focal lengths of the multiple layers of the lenticular grating layers are the same or different, and the radians of the multiple layers of the lenticular grating layers are the same or different.
9. 3D screen according to claim 1, characterized in that: the micro lenses in each lenticular lens layer face or back to the display pixel unit, and the micro lenses in the adjacent lenticular lens layers face the same direction, are arranged oppositely or are arranged oppositely.
10. 3D screen according to claim 1, characterized in that: wherein, the micro lenses in the two adjacent lenticular grating layers are back to back and are arranged on the same substrate, so that the two adjacent lenticular grating layers are in an integral structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210083808.5A CN114280810A (en) | 2022-01-24 | 2022-01-24 | 3D screen with multilayer lenticular grating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210083808.5A CN114280810A (en) | 2022-01-24 | 2022-01-24 | 3D screen with multilayer lenticular grating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815289A (en) * | 2022-04-29 | 2022-07-29 | 深圳奇屏科技有限公司 | Naked eye 3D display processing method and naked eye 3D display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815289A (en) * | 2022-04-29 | 2022-07-29 | 深圳奇屏科技有限公司 | Naked eye 3D display processing method and naked eye 3D display |
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