CN218272765U

CN218272765U - Lens for 3D display and 3D display device

Info

Publication number: CN218272765U
Application number: CN202221534442.0U
Authority: CN
Inventors: 商世明; 彭晓青; 薛海林; 苏少凯; 秦伟达; 李艳云; 周如; 周星
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-01-10
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a 3D shows technical field, discloses a lens and 3D display device for 3D shows. The lens for 3D display includes a first face and a second face; the first surface is a light incident surface; the second surface is a light-emitting surface and is arranged opposite to the first surface, the second surface is a cylindrical surface and comprises a first part and two second parts; the first part is arranged as a cylinder; the two second parts are correspondingly connected to the two opposite sides of the first part, the second parts are arranged to be cylindrical surfaces, a first alignment line of the first part and two second alignment lines of the two second parts are connected to form a curve, and the curvature radius of the first part is larger than that of the second part. The lens has a large visual angle and smooth viewpoint transition.

Description

Lens for 3D display and 3D display device

Technical Field

The present disclosure relates to the field of 3D display technologies, and in particular, to a lens for 3D display and a 3D display device including the lens for 3D display.

Background

The 3D (Dimension, linearity and Dimension) display technology is a novel display technology, and compared with the common 2D picture display technology, the 3D technology can make the picture become three-dimensional and vivid, the image is not limited on the plane of the screen any more, the image can go out of the screen as if, and audiences can feel personally on the scene. The lenticular lens technology is also called lenticular lens or micro-lenticular lens 3D technology, and has the greatest advantage that the brightness is not affected, so that the lenticular lens technology is favored by more and more users.

However, the viewing angle of the current micro-lenticular 3D device is small and the viewpoint transition is not smooth.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to overcome the disadvantages of the prior art that the viewing angle is small and the viewpoint transition is not smooth, and provides a lens for 3D display having a large viewing angle and a smooth viewpoint transition and a 3D display device including the lens for 3D display.

According to an aspect of the present disclosure, there is provided a lens for 3D display, including:

the first surface is a light incident surface;

the second face, be the play plain noodles, and with first face sets up relatively, the second face sets up to the cylinder, the second face includes:

a first portion configured as a cylinder;

the two second parts are correspondingly connected to two opposite sides of the first part, the second parts are arranged to be cylindrical surfaces, a first alignment line of the first part and two second alignment lines of the two second parts are connected to form a curve, and the curvature radius of the first part is larger than that of the second part.

In one exemplary embodiment of the present disclosure,

the curvature radius R of the first part and the second part is in direct proportion to the focal length f, R = kf, and k is greater than or equal to 0.5 and less than or equal to 2; the focal length of the first part is equal to that of the second part, and the value of k of the first part is larger than that of k of the second part.

In an exemplary embodiment of the present disclosure, the second face further includes:

the two third parts are correspondingly connected to the sides, far away from the first part, of the two second parts, the third parts are arranged to be cylindrical surfaces, straight generatrices of the third parts are parallel to the straight generatrices of the first parts, and the curvature radius of the second parts is larger than that of the third parts.

In an exemplary embodiment of the present disclosure, the first face is a plane.

In an exemplary embodiment of the present disclosure, the lens further includes: the third face and the fourth face are arranged in a plane and intersect with a straight generatrix of the first part, the third face is connected between the first face and the second face, and the fourth face is connected between the first face and the second face.

In an exemplary embodiment of the present disclosure, the lens further includes: the second portion is provided with a straight generatrix, the first portion is provided with a first surface and a second surface, the first surface and the second surface are opposite, the fifth surface and the sixth surface are arranged to be planes and are parallel to the straight generatrix of the first portion, the fifth surface is connected between the first surface and the second surface, and the sixth surface is connected between the first surface and the second surface.

According to another aspect of the present disclosure, there is provided a 3D display device including: a lens for 3D display as claimed in any preceding claim.

In an exemplary embodiment of the present disclosure, the 3D display device further includes:

the display panel is provided with a display surface, the lens is arranged on one side, close to the display surface, of the display panel, and the first surface of the lens is closer to the display panel relative to the second surface of the lens.

In an exemplary embodiment of the present disclosure, the display panel includes a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels, one red sub-pixel, one green sub-pixel, and one blue sub-pixel adjacent to each other in a first direction form one pixel, the plurality of pixels are arranged along the first direction, a central axis of the lens forms an angle with the first direction, and the central axis of the lens is parallel to a straight bus line of the first portion.

In an exemplary embodiment of the present disclosure, the included angle is 70 ° or more and less than 90 °.

In an exemplary embodiment of the present disclosure, a width of the lens in the first direction is greater than or equal to a sum of widths of three sub-pixels in the first direction, and is less than or equal to a sum of widths of sixty sub-pixels in the first direction; the length of the lens in the second direction is greater than or equal to the sum of the lengths of the three sub-pixels in the second direction, and is less than or equal to the sum of the lengths of the sixty sub-pixels in the second direction; wherein the second direction intersects the first direction.

In an exemplary embodiment of the present disclosure, an orthographic projection of the lens on the display panel covers at least nine sub-pixels, and an orthographic projection of the lens on the display panel covers at most three hundred sub-pixels.

The two second parts are correspondingly and smoothly connected to two opposite sides of the first part, and the curvature radius of the first part is larger than that of the second part; on one hand, the first part with larger curvature radius refracts the light rays to the central visual area, so that a dense viewpoint can be projected in the central visual area, the central visual area is a common visual area, and the viewpoints in the common visual area are dense, therefore, the viewpoint transition is smooth, and the requirements of users are met; on the other hand, the second portion with the smaller curvature radius refracts the light rays toward the peripheral vision region, and the refraction angle is larger, so that the visual angle is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a first exemplary embodiment of a lens for 3D display according to the present disclosure.

Fig. 2 is a schematic diagram of a lens for 3D display in fig. 1, which refracts light.

Fig. 3 is a schematic perspective view of the lens for 3D display in fig. 1.

Fig. 4 is a schematic perspective view of a second exemplary embodiment of a lens for 3D display according to the present disclosure.

Fig. 5 is a schematic perspective view of a third exemplary embodiment of a lens for 3D display according to the present disclosure.

Fig. 6 is a schematic structural diagram of an exemplary embodiment of a 3D display device according to the present disclosure.

Description of reference numerals:

1. a lens; 11. a first side;

12. a second face; 121. a first portion; 122. a second portion; 123. a third portion;

13. a third surface; 14. a fourth surface; 15. a fifth aspect; 16. a sixth side;

2. a display panel; 21. a red sub-pixel; 22. a green sub-pixel; 23. a blue sub-pixel;

31. a left eye view; 32. a right eye view;

x, a first direction; y, second direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The present exemplary embodiment provides a lens 1 for 3D display, as shown with reference to fig. 1 to 6, in which a curvature radius contrast relationship of a first portion 121 and a second portion 122 is indicated by a dotted line in fig. 1, and a division line or an invisible solid line between two portions smoothly connected is indicated by a dotted line in fig. 3 to 5; the lens 1 for 3D display may include a first face 11 and a second face 12; the first surface is a light incident surface, and the second surface is a light emergent surface; the second face 12 is arranged opposite to the first face 11, the second face 12 is arranged as a cylinder, the second face 12 may comprise a first portion 121 and two second portions 122; the first portion 121 is provided as a cylinder; the two second portions 122 are correspondingly connected to two opposite sides of the first portion 121, the second portions 122 are arranged as cylindrical surfaces, a first alignment line of the first portion 121 is connected with two second alignment lines of the two second portions 122 to form a curve, and a radius of curvature of the first portion 121 is greater than that of the second portion 122.

Referring to fig. 2, in the lens for 3D display of the present disclosure, a left eye view 31 and a right eye view 32 both form a plurality of viewpoints through the lens 1, on one hand, a first portion 121 with a large curvature radius refracts light toward a central viewing area, so that a dense viewpoint can be projected in the central viewing area, and the central viewing area is a common viewing area, and the viewpoints in the common viewing area are dense, so that viewpoint transition is smooth, and a user's requirement is met; on the other hand, the second portion 122 with smaller radius of curvature refracts light rays toward the peripheral vision region, and the angle of refraction is larger, so as to increase the viewing angle, for example, the viewing angle can reach 160 degrees.

This lens 1 is applicable to lenticular 3D display device, lenticular 3D display device's principle: a layer of lenticular lenses 1 is applied in front of (to the display surface of) the display panel 2 so that the image plane of the display panel 2 lies in the focal plane of the lenses 1, so that the pixels of the image under each lens 1 are divided into sub-pixels, so that the lenses 1 project each sub-pixel in a different direction. The display device is then viewed from different angles by the two eyes, and the different sub-pixels are seen.

In this exemplary embodiment, referring to fig. 3 to 5, the lens 1 may include a first surface 11 and a second surface 12, where the first surface 11 is disposed opposite to the second surface 12, the first surface 11 is a light incident surface, and the second surface 12 is a light emitting surface.

The first face 11 may be provided as a plane. Of course, in some other exemplary embodiments of the present disclosure, the first surface 11 may be provided as a curved surface to fit a curved display panel.

Referring to fig. 3 and 5, the second face 12 may be provided as a cylindrical surface. In particular, the second face 12 may comprise a first portion 121 and two second portions 122, the first portion 121 being arranged as a cylinder and the second portions 122 being arranged as cylinders. The cylindrical surface is a curved surface formed by parallel movement of straight lines along a fixed curve, namely a curved surface formed by parallel movement of a moving straight line along a fixed curve, wherein the moving straight line is called a straight generatrix of the cylindrical surface, and the fixed curve is called a collimation line of the cylindrical surface. The resulting cylinder is called the cylinder when the directrix is a circle. The first portion 121 may be provided as a cylindrical surface and the second portion 122 may also be provided as a cylindrical surface. Of course, in some other exemplary embodiments of the present disclosure, the first portion 121 may be configured as an elliptic cylinder, a parabolic cylinder, or the like, and the second portion 122 may also be configured as an elliptic cylinder, a parabolic cylinder, or the like.

Two second portions 122 are correspondingly connected to opposite sides of the first portion 121, that is, one second portion 122 is connected to one side of the first portion 121, and two second portions 122 are connected to both sides of the first portion 121 in a one-to-one correspondence. Specifically, the first portion 121 has a first straight generatrix and a first alignment line, the second portion 122 has a second straight generatrix and a second alignment line, the first straight generatrix is parallel to the second straight generatrix, the first alignment line is connected to the second alignment line, and the first alignment line of the first portion 121 is connected to the two second alignment lines of the two second portions 122 to form a curve, which is the alignment line of the second surface 12.

The radius of curvature of the first portion 121 is greater than the radius of curvature of the second portion 122, i.e. the radius of curvature of the first directrix is greater than the radius of curvature of the second directrix. The curvature radius of the first portion 121 is set to be larger, so that the curvature of the first portion 121 is relatively gentle compared with that of the second portion 122, as shown in fig. 2, the first portion 121 with the larger curvature radius refracts light rays to a central viewing area, so that a dense viewpoint can be projected in the central viewing area, and the central viewing area is a common viewing area, and the viewpoints in the common viewing area are dense, so that viewpoint transition is relatively smooth, and the requirements of users are met. The second portion 122, which has a smaller radius of curvature, refracts light rays toward the peripheral viewing zone, and the angle of refraction is larger to improve the viewing angle.

It should be noted that, in the case where the first portion 121 is configured as an elliptic cylindrical surface, a parabolic cylindrical surface, or the like, and the second portion 122 is configured as an elliptic cylindrical surface, a parabolic cylindrical surface, or the like, the curvature radius of the first portion 121 itself is different, and the curvature radius of the second portion 122 itself is also different, so that the curvature radius of the first portion 121 is larger than the curvature radius of the second portion 122, which means that the minimum curvature radius of the first portion 121 is larger than the maximum curvature radius of the second portion 122.

The focal length of the lens 1 is f, which is designed according to the needs; the number of the sub-pixels covered by the lens 1 in the first direction X is N, and the lens is designed according to needs; the width (aperture) of the lens 1 in the first direction X is N × Px, and Px is the width of the sub-pixel in the first direction X, which is a constant value of the selected display panel. The curvature radius R of the lens 1 is proportional to the focal length f, specifically, R = kf; the value of k is dependent on the material chosen for the lens 1 and is typically 0.5-2. It can be designed that k is greater for the first portion than for the second portion, so that the radius of curvature of the first portion is greater than the radius of curvature of the second portion.

And then, cutting and splicing the two parts into a whole according to the number and the density of the view points to be designed. Specifically, the width of the central main area, namely the width of the visual area corresponding to the first part, is obtained by adding according to the designed central viewpoint number and viewpoint interval; and adding the peripheral area width, namely the width of the visual area corresponding to the second part according to the designed peripheral viewpoint number and the viewpoint interval. The width of the first portion and the width of the second portion are obtained according to a lens imaging formula (1/u (object distance) +1/v (image distance) =1/f (lens focal length)). And butting the edges of the first part and the second part to manufacture a mold, and stamping to obtain the lens 1.

Further, referring to fig. 4, the second surface 12 may further include two third portions 123, the third portions 123 may be arranged as cylindrical surfaces, and the third portions 123 may be arranged as cylindrical surfaces. Of course, in some other exemplary embodiments of the present disclosure, the third portion 123 may be provided as an elliptic cylinder, a parabolic cylinder, or the like.

The two third portions 123 are correspondingly connected to the sides of the two second portions 122 away from the first portion 121, that is, one third portion 123 is connected to one side of one second portion 122 away from the first portion 121, and the two third portions 123 are connected to two sides of the two second portions 122 away from the first portion 121 in a one-to-one correspondence manner. In particular, the third portion 123 has a third straight generatrix and a third directrix, the second portion 122 has a second straight generatrix and a second directrix, the third straight generatrix is parallel to the second straight generatrix and the third directrix is connected to the second directrix. Therefore, the first straight generatrix of the first portion 121, the second straight generatrix of the second portion 122 and the third straight generatrix of the third portion 123 are all parallel to each other; the first alignment line of one of the first portions 121, the second alignment line of one of the second portions 122, the third alignment line of the third portion 123, the first alignment line of the other of the first portions 121, and the second alignment line of the other of the second portions 122 are sequentially connected to form a curve, which is the alignment line of the second surface 12.

The radius of curvature of the second portion 122 is greater than the radius of curvature of the third portion 123. I.e. the radius of curvature of the second directrix is larger than the radius of curvature of the third directrix. The radius of curvature of the second portion 122 is set larger so that the degree of curvature of the second portion 122 is gentler relative to the third portion 123.

A structure is formed in which the radius of curvature of the first portion 121 is greater than that of the second portion 122, and the radius of curvature of the second portion 122 is greater than that of the third portion 123.

The first part 121 with the larger curvature radius refracts light rays to the central visual area, so that a dense viewpoint can be projected in the central visual area, the central visual area is a common visual area, and the viewpoints in the common visual area are dense, therefore, the viewpoint transition is smooth, and the requirements of users are met. The third portion 123, which has a smaller radius of curvature, refracts light rays toward the peripheral viewing zone, and the angle of refraction is larger to improve the viewing angle. The second portion 122 with the central radius of curvature refracts the light substantially uniformly, so that the viewpoint in the viewing zone between the central viewing zone and the peripheral viewing zone can also meet the basic requirements of the user, and the problem that the viewpoint in the viewing zone between the central viewing zone and the peripheral viewing zone is less, which causes visual disconnection, is avoided.

It should be noted that, in the case where the third portion 123 is provided as an elliptic cylindrical surface, a parabolic cylindrical surface, or the like, and the second portion 122 is provided as an elliptic cylindrical surface, a parabolic cylindrical surface, or the like, the radius of curvature of the third portion 123 itself is made different, and the radius of curvature of the second portion 122 itself is also made different, so that the radius of curvature of the second portion 122 is larger than the radius of curvature of the third portion 123, which means that the minimum radius of curvature of the second portion 122 is larger than the maximum radius of curvature of the third portion 123.

In addition, in other example embodiments of the present disclosure, the second surface 12 may further include two fourth portions, the fourth portions may be arranged as cylindrical surfaces, and the fourth portions may be arranged as cylindrical surfaces. Of course, the fourth section may be provided as an elliptic cylinder, a parabolic cylinder, or the like. The two fourth portions are correspondingly and smoothly connected to the sides of the two third portions 123 far away from the first portion 121, and the radius of curvature of the third portions 123 is larger than that of the fourth portions. Further, the second side 12 may further include two fifth portions, etc., which are not described herein again.

It should be noted that the first portion and the second portion can be smoothly connected, which is more favorable for smoothness of image formation. Of course, in the case where the third portion is provided, the third portion and the second portion may be smoothly connected.

Referring to fig. 5, the first side 11 may be directly connected to the second side 12. In particular, the first face 11 may be configured as a parallelogram, and the first face 11 may include two first straight sides and two second straight sides. The second surface 12 may include two third straight sides parallel to the first straight generatrix and two first curved sides, which are curves formed by connecting the first and second directrices. The two third straight edges may be connected to the two second straight edges, or the third straight edge may be a straight edge with the second straight edge, so that the first surface 11 may be directly connected to the second surface 12.

In this case, the lens 1 further has a third face 13 and a fourth face 14 disposed opposite to each other, wherein the third face 13 and the fourth face 14 are disposed in a plane and intersect with a straight generatrix of the first face 11, for example, the third face 13 and the fourth face 14 are perpendicular to the straight generatrix of the first face 11, the third face 13 is connected between the first face 11 and the second face 12, and the fourth face 14 is connected between the first face 11 and the second face 12.

The third surface 13 and the fourth surface 14 have the same shape, and the third surface 13 is taken as an example to be described in detail below, where the third surface 13 may include a fourth straight edge and a second curved edge, the fourth straight edge may be connected to the first straight edge, or the fourth straight edge may be a straight edge with the first straight edge; the second curved edge may be connected to the first curved edge, or the second curved edge may be a curved edge with the first curved edge, so that the third surface 13 is connected between the first surface 11 and the second surface 12, and the fourth surface 14 is connected between the first surface 11 and the second surface 12.

In some further exemplary embodiments of the present disclosure, as shown in fig. 3 and 4, the lens 1 may further include a fifth surface 15 and a sixth surface 16 which are oppositely disposed, the fifth surface 15 and the sixth surface 16 are disposed as a plane and are parallel to a straight generatrix of the first surface 11, the fifth surface 15 is connected between the first surface 11 and the second surface 12, and the sixth surface 16 is connected between the first surface 11 and the second surface 12.

The fifth surface 15 and the sixth surface 16 have the same shape, and the fifth surface 15 is taken as an example to be described in detail below, and the fifth surface 15 may be configured as a rectangular plane, that is, the fifth surface 15 may include two fifth straight edges and two sixth straight edges. One of the fifth straight edges may be connected to the second straight edge, or one of the fifth straight edges may be a straight edge with the second straight edge, so that the first surface 11 may be directly connected to the fifth surface 15, and the first surface 11 may be directly connected to the sixth surface 16. The other fifth straight edge may be connected to the third straight edge, or the other fifth straight edge may be a straight edge with the second straight edge, so that the second face 12 may be directly connected to the fifth face 15, and the second face 12 may be directly connected to the sixth face 16.

In this case, the shapes of the third surface 13 and the fourth surface 14 are different from those described above, specifically, the third surface 13 may include a fourth straight edge, a seventh straight edge, and a second curved edge, and the fourth straight edge may be connected to the first straight edge, or the fourth straight edge may be a straight edge with the first straight edge; the second curved edge may be connected to the first curved edge, or the second curved edge may be a curved edge with the first curved edge, and the seventh straight edge may be connected to the sixth straight edge, or the seventh straight edge may be a straight edge with the sixth straight edge, so that the fifth surface 15 is connected between the first surface 11 and the second surface 12, and the sixth surface 16 is connected between the first surface 11 and the second surface 12.

Based on the same inventive concept, the disclosed example embodiment provides a 3D display device, as shown in fig. 6, where the number on each sub-pixel represents the number of sub-pixels that can be covered by the orthographic projection of one lens 1 on the display panel 2; the 3D display device may comprise a lens 1 for 3D display as described in any of the above. The specific structure of the lens 1 has been described in detail above, and therefore, the detailed description thereof is omitted.

In the present exemplary embodiment, the 3D Display device may further include a Display panel 2, and the Display panel 2 may be an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting semiconductor) Display panel 2, a QLED (Quantum Dot Light Emitting diode) Display panel 2, and so on. Other display panels 2 are also possible, and the display panel 2 may be a currently available product.

The liquid crystal display can comprise a backlight module, an array substrate, a liquid crystal layer, a color film substrate and a cover plate which are sequentially stacked, wherein the backlight module provides a backlight source, the array substrate is used for controlling the rotation direction of the liquid crystal layer, the color film substrate filters the backlight source to form sub-pixels with different colors, and the cover plate protects the whole liquid crystal display.

The OLED display panel 2 can include the drive backplate, the luminous base plate and the apron that stack gradually the setting, and the drive backplate can include the pixel circuit that a plurality of arrays were arranged, and the luminous base plate can include the light emitting device that a plurality of arrays were arranged, and pixel circuit can drive light emitting device and give out light, and whole OLED display panel 2 of board protection.

The display panel 2 has a display surface, the lens 1 is disposed on a side of the display panel 2 close to the display surface, and the first surface 11 of the lens 1 is closer to the display panel 2 than the second surface 12 of the lens 1. The first side 11 of the lens 1 may be directly adhered to the side of the cover plate facing away from the array substrate.

In some exemplary embodiments, in consideration of satisfying the requirement of the optical path difference of the lens 1, a light-transmitting layer may be further provided between the cover plate and the lens 1, and the refractive index of the light-transmitting layer may be substantially the same as that of the lens 1.

Referring to fig. 6, the display panel 2 may include a plurality of red sub-pixels 21, a plurality of green sub-pixels 22, and a plurality of blue sub-pixels 23, where one red sub-pixel 21, one green sub-pixel 22, and one blue sub-pixel 23 adjacent to each other in the first direction X form one pixel, the plurality of pixels are arranged along the first direction X, and the central axis of the lens 1 forms an angle α with the first direction X. The included angle alpha is greater than or equal to 70 degrees and smaller than 90 degrees. For example, the included angle α may be 73 °, 75 °, 78 °, 80 °, 82.4 °, 85 °, 87.5 °, 89 °.

With this arrangement, sharp drop of pixels in the vertical direction and moire phenomenon can be prevented, and the viewing zone can be repeatedly projected for each set of sub-pixels instead of projecting only one set of parallax images.

The red sub-pixels 21 are arranged along the second direction Y to form a column of red sub-pixels 21, the green sub-pixels 22 are arranged along the second direction Y to form a column of green sub-pixels 22, and the blue sub-pixels 23 are arranged along the second direction Y to form a column of blue sub-pixels 23. One row of red sub-pixels 21, one row of green sub-pixels 22 and one row of blue sub-pixels 23 form a group of sub-pixel rows, and the sub-pixel rows are sequentially arranged along the first direction X.

Of course, the arrangement of the sub-pixels is not limited to the above description, and may be in other forms, which are not described herein again.

The width of the lens 1 in the first direction X is equal to or greater than the sum of the widths of the three sub-pixels in the first direction X, and equal to or less than the sum of the widths of the sixty sub-pixels in the first direction X.

The length of the lens 1 in the second direction Y is equal to or greater than the sum of the lengths of the three sub-pixels in the second direction Y, and equal to or less than the sum of the lengths of the sixty sub-pixels in the second direction Y.

For example, the width of the lens 1 in the first direction X may be equal to the sum of the widths of the five sub-pixels in the first direction X, and the length of the lens 1 in the second direction Y may be equal to the sum of the lengths of the five sub-pixels in the second direction Y. The specific length and width of the lens 1 can be set as desired. The number of sub-pixels covered by the lens 1 in the first direction X may be the same as or different from the number of sub-pixels covered by the lens 1 in the second direction Y, or may be relatively close to each other.

Put another way, the orthographic projection of the lens 1 on the display panel 2 covers at least nine sub-pixels, and the orthographic projection of the lens 1 on the display panel 2 covers at most three hundred sub-pixels. For example, the orthographic projection of the lens 1 on the display panel 2 may cover twenty-five sub-pixels.

In this specification, the first direction X is an arrangement direction of the pixels, and the second direction Y intersects the first direction X.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A lens for 3D display, comprising:

the first surface is a light incident surface;

the second face, for go out the plain noodles, and with first face sets up relatively, the second face sets up to the cylinder, the second face includes:

a first portion configured as a cylinder;

the two second parts are correspondingly connected to two opposite sides of the first part, the second parts are arranged to be cylindrical surfaces, a first alignment line of the first part is connected with two second alignment lines of the two second parts to form a curve, and the curvature radius of the first part is larger than that of the second part.

2. Lens for 3D display according to claim 1,

the curvature radius R of the first part and the curvature radius R of the second part are in direct proportion to the focal length f, R = kf, and k is greater than or equal to 0.5 and less than or equal to 2; the focal length of the first part is equal to the focal length of the second part, and the value of k of the first part is larger than that of k of the second part.

3. A lens for 3D display according to claim 1, characterized in that the second face further comprises:

4. A lens for 3D display according to claim 1, characterized in that the first face is planar.

5. A lens for 3D display according to claim 1, characterized in that the lens further comprises: the third face and the fourth face are arranged in a plane and intersect with a straight generatrix of the first part, the third face is connected between the first face and the second face, and the fourth face is connected between the first face and the second face.

6. A lens for 3D display according to claim 1, characterized in that the lens further comprises: the second portion is provided with a straight generatrix, the first portion is provided with a first surface and a second surface, the first surface and the second surface are opposite, the fifth surface and the sixth surface are arranged to be planes and are parallel to the straight generatrix of the first portion, the fifth surface is connected between the first surface and the second surface, and the sixth surface is connected between the first surface and the second surface.

7. A3D display device, comprising: a lens for 3D display as claimed in any one of claims 1 to 6.

8. The 3D display device according to claim 7, wherein the 3D display device further comprises:

9. The 3D display device according to claim 8, wherein the display panel comprises a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels, one red sub-pixel, one green sub-pixel, and one blue sub-pixel adjacent to each other in the first direction form one pixel, the plurality of pixels are arranged in the first direction, the central axis of the lens forms an angle with the first direction, and the central axis of the lens is parallel to the straight bus line of the first portion.

10. The 3D display device according to claim 9, wherein the included angle is 70 ° or more and less than 90 °.

11. The 3D display device according to claim 9,

the width of the lens in the first direction is greater than or equal to the sum of the widths of three sub-pixels in the first direction, and is less than or equal to the sum of the widths of sixty sub-pixels in the first direction;

the length of the lens in the second direction is greater than or equal to the sum of the lengths of the three sub-pixels in the second direction, and is less than or equal to the sum of the lengths of the sixty sub-pixels in the second direction;

wherein the second direction intersects the first direction.

12. A3D display device according to claim 8, characterized in that the orthographic projection of the lens on the display panel covers at least nine sub-pixels and at most three hundred sub-pixels.