CN212302118U - Naked eye 3D display device and optical lens thereof - Google Patents

Abstract

The utility model discloses a bore hole 3D display device and optical lens thereof, wherein the optical lens comprises at least two lens columns which are made of the same material and are arranged in parallel, the lens columns are convex lenses, and the lens columns comprise first refraction parts with symmetrical structures and second refraction parts and third refraction parts which are respectively arranged at two sides of the first refraction parts; the second refraction piece and the third refraction piece are symmetrically arranged around the central axis of the first refraction piece, and the refraction directions of the second refraction piece and the third refraction piece are symmetrical; the second refraction piece and the third refraction piece respectively comprise at least two refraction units which are arranged in parallel; the second refraction piece and the third refraction piece have the same refractive index as the first refraction piece. The utility model discloses a set up the same first refraction piece of refracting index, second refraction piece and third refraction piece, do not influence its projection effect when reducing the height of lens post to can reduce projection mole line, reduction in production cost when promoting projection quality, make product thickness reduce, so that the product is frivolous gradually.

Description

Naked eye 3D display device and optical lens thereof

Technical Field

The utility model relates to a bore hole 3D technical field especially relates to a bore hole 3D display device and optical lens thereof.

Background

Common 3D display equipment all needs 3D glasses, and the effect of 3D glasses is through technical means let the left eye see the left image, right eye see the right image, according to the little parallax between two images, can simulate the three-dimensional sensation for the human brain.

Lenticular lens technology is one of the mainstream naked-eye 3D technologies. The principle of the lenticular lens technology is to add a layer of lenticular lens in front of the liquid crystal display of the display screen and to make the image plane of the display screen be located at the focal plane of the lenticular lens, so that the lenticular lens can project each pixel sub-pixel in different directions. Thus, the display screen is viewed by both eyes from different angles, and different pixel sub-pixels are seen.

However, the conventional lenticular lens is high in height, so that the thickness of the display device is thick, the manufacturing cost is high, the display device is too thick and heavy, the current trend of lightness and thinness is not met, and Moire patterns are easily generated on light refracted by the common lenticular lens, so that the use experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's defect, provide a bore hole 3D display device and optical lens thereof.

The utility model provides a technical scheme that its technical problem adopted is:

an optical lens comprises at least two lens columns which are made of the same material and arranged in parallel, wherein each lens column is a convex lens, and each lens column comprises a first refraction piece with a symmetrical structure, and a second refraction piece and a third refraction piece which are respectively arranged on two sides of the first refraction piece; the second refraction piece and the third refraction piece are symmetrically arranged around the central axis of the first refraction piece, and the refraction directions of the second refraction piece and the third refraction piece are symmetrical; the second refraction piece and the third refraction piece respectively comprise at least two refraction units which are arranged in parallel; the second refraction piece and the third refraction piece are both the same as the refractive index of the first refraction piece.

Preferably, the top surface of the first refraction piece is a first exit surface with a symmetrical structure, and the first exit surface is arranged in an axisymmetric manner by taking the central axis of the first refraction piece as an axis;

the first emergent surface is a curved surface, a plane or a combination of a plurality of planes.

Preferably, each second refraction element is formed by sequentially arranging at least two second refraction units in parallel, and each third refraction element is formed by sequentially arranging at least two third refraction elements in parallel;

the second refraction unit and the third refraction unit are symmetrically arranged one by taking the central axis of the first refraction piece as an axis.

Preferably, the second refraction unit and the third refraction unit respectively include at least one triangular prism-shaped portion, a top surface of the triangular prism-shaped portion of the second refraction unit is a second exit surface for exiting refracted light, and a side surface of the triangular prism-shaped portion of the second refraction unit is a second connection surface; the top surface of the triangular prism-shaped part of the third refraction unit is a third emergent surface for emitting refraction rays, and the side surface of the triangular prism-shaped part of the third refraction unit is a third connecting surface;

at least two second emergent surfaces and at least two second connecting surfaces are arranged in a staggered and continuous mode, and at least two third emergent surfaces and at least two third connecting surfaces are arranged in a staggered and continuous mode.

Preferably, at least two of the second connection surfaces and at least two of the third connection surfaces have the same height;

or the widths of the at least two second refraction units and the widths of the at least two third refraction units are the same.

Preferably, each second refraction unit is arranged with the bottom surface of the triangular prism-shaped portion thereof being in contact with the bottom surface of the adjacent second refraction unit to form the second refraction element, and each third refraction unit is arranged with the bottom surface of the triangular prism-shaped portion thereof being in contact with the bottom surface of the adjacent third refraction unit to form the third refraction element;

or, the lens column further comprises a connecting part, and the second refraction unit and the third refraction unit are connected into a whole through the connecting part.

Preferably, the second is connected the face with the bottom surface of lens post is first contained angle, the third is connected the face with the bottom surface of lens post is the second contained angle, wherein first contained angle with the second contained angle with the axis of first refraction piece is axisymmetric setting, the angle of first contained angle with the second contained angle all is 85-95 respectively.

Preferably, the first exit surface, the second exit surface and the third exit surface are curved surfaces symmetrically arranged about a central axis of the first refractive element, and curvatures of the second exit surface and the third exit surface are the same as those of the first exit surface, or curvatures of the second exit surface, the first exit surface and the third exit surface are continuous;

or the first emergent surface is a plane or a combination of a plurality of planes which are symmetrical about the central axis of the first refractive element, the second emergent surface and the third emergent surface are planes which are symmetrical about the central axis of the first refractive element, the included angle between each second emergent surface and each third emergent surface and the bottom surface of the lens column is smaller than 90 degrees, and the second emergent surface and the third emergent surface on two sides of the central line of the first emergent surface are respectively arranged in parallel with the first emergent surface on the same side part.

The utility model discloses still provide bore hole 3D display device, including above-mentioned optical lens, still include the display screen, the display screen includes at least a set of pixel unit, wherein the pixel unit includes at least one left eye pixel unit that corresponds with the left eye to and at least one right eye pixel unit that corresponds with the right eye, every the lens post corresponds at least a set of pixel unit.

Preferably, the optical lens is directly arranged on the display screen;

or a light-transmitting medium is also arranged between the optical lens and the display screen.

The utility model discloses following beneficial effect has: through setting up the same first refraction piece of refracting index, second refraction piece and third refraction piece, do not influence its projection effect when reducing the height of lens post to can reduce projection mole line, reduction in production cost when promoting projection quality makes product thickness reduce, so that the product is frivolous gradually.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural diagram of a first embodiment of an optical lens of the present invention;

fig. 2 is a perspective view of a first embodiment of an optical lens of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the optical lens of the present invention;

FIG. 4 is a perspective view of a second embodiment of an optical lens of the present invention

Fig. 5 is a schematic structural diagram of a third embodiment of the optical lens of the present invention;

FIG. 6 is a perspective view of a third embodiment of an optical lens of the present invention

Fig. 7 is a schematic structural diagram of an embodiment of the optical lens of the present invention that does not include a connecting portion;

fig. 8 is a schematic structural view of a first embodiment of the lens column of the present invention;

fig. 9 is a schematic structural view of a second embodiment of the lens column of the present invention;

fig. 10 is a schematic structural view of a third embodiment of the lens column of the present invention;

fig. 11 is a schematic structural diagram of the first embodiment of the naked eye 3D display device of the present invention;

fig. 12 is a schematic structural diagram of a first embodiment of the naked eye 3D display device of the present invention;

fig. 13 is a schematic structural diagram of a third embodiment of the naked eye 3D display device of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides an optical lens can be used to bore hole 3D display screen on, the principle that bore hole 3D shows generally carries out the beam split through the image that lens show the display to make people's eye receive different images, just so realized the 3D demonstration. The lens refracts different display contents to different places in the space through the refraction effect of light, the display contents are separated when the display contents reach human eyes, and the human eyes receive two images containing parallax, so that the three-dimensional effect is generated.

As shown in fig. 1-6, the optical lens provided by the present invention may include a plurality of lens columns 1 made of the same material and arranged in parallel, wherein the lens columns 1 are convex lenses for refracting the parallel incident screen light. In some embodiments, it is preferable that the cross section of the lens column 1 is rectangular, and a plurality of lens columns 1 are arranged side by side in parallel along the width direction of the rectangle.

In the present invention, the lens column 1 includes a first refraction member 11 having a symmetrical structure, and a second refraction member 12 and a third refraction member 13 respectively disposed at two sides of the first refraction member 11; the second refraction piece 12 and the third refraction piece 13 are symmetrically arranged about the central axis of the first refraction piece 11, and the refraction directions of the second refraction piece and the third refraction piece are symmetrical; the second refraction piece 12 and the third refraction piece 13 respectively comprise at least two refraction units which are arranged in parallel; the second refractive element 12 and the third refractive element 13 have the same refractive index as the first refractive element 11. The utility model discloses in, the refracting index passes through 1 material of lens post and lens structure and confirms jointly, and the image that shows when the screen still can form the continuous picture of image after the refraction of the same lens post 1 of refracting index.

In some embodiments, referring to fig. 8-10, the top surface of the first refraction member 11 is a first exit surface 111 with a symmetrical structure, the first exit surface 111 may be a curved surface, a plane, or a combination of planes, the first exit surface 111 is disposed symmetrically with respect to the central axis of the first refraction member 11, and the axis of symmetry of the first exit surface 111 is perpendicular to the bottom surface of the lens barrel 1; the second refraction piece 12 comprises a plurality of second refraction units 121 arranged in parallel in sequence, the third refraction piece 13 comprises a plurality of third refraction units 131 arranged in parallel in sequence, the second refraction units 121 and the third refraction units 131 are symmetrically arranged one by taking the central axis of the first refraction piece 11 as an axis, namely, each second refraction unit 121 is symmetrically provided with one corresponding third refraction unit 131.

The second refraction unit 121 and the third refraction unit 131 each include at least one triangular prism-shaped portion, wherein the top surface of the triangular prism-shaped portion of the second refraction unit 121 is a second exit surface 1211 for emitting refracted light, the side surface is a second connection surface 1212, the second exit surface 1211 and the second connection surface 1212 are arranged in a staggered and continuous manner, the second refraction unit 121 further includes a second bottom surface connecting the plurality of second exit surfaces 1211 and the plurality of second connection surfaces 1212, and the second bottom surfaces of the plurality of second refraction units 121 are connected into a whole, so that the plurality of second refraction units 121 are sequentially and continuously arranged; the top surface of the triangular prism-shaped part of the third refraction unit 131 is a third exit surface 1311 for exiting refracted rays, the side surface is a third connection surface 1312, the third exit surface 1311 and the third connection surface 1312 are arranged in a staggered and continuous manner, the third refraction unit 131 further comprises a third bottom surface for connecting the third exit surfaces 1311 and the third connection surfaces 1312, and the third bottom surfaces of the third refraction units 131 are connected into a whole, so that the third refraction units 131 are sequentially and continuously arranged; referring to fig. 7, the second bottom surface and the third bottom surface are the same plane, and the plane may simultaneously connect all of the second refraction unit 121, the first top surface 111, and the third refraction unit 131. The second refraction units 121 and the third refraction units 131 are sequentially and continuously arranged towards two sides far away from the first top surface 111 respectively, with two sides of the first emergent surface as starting points. In some embodiments, the height of number of second connection faces 1212 is the same as the height of number of third connection faces 1312; in other embodiments, the widths of the second and third refraction units 121 and 131 are the same, and in this embodiment, the widths of the second and third refraction units 121 and 131 are the projection lengths of the second and third emission surfaces 1211 and 1311 on the second and third bottom surfaces, respectively. Each second refraction unit 121 is connected with the bottom surface of the adjacent second refraction unit 121 through the bottom surface of the triangular prism portion, that is, a plurality of second refraction units 121 are connected into a whole through the same second bottom surface, and each third refraction unit 131 is connected with the bottom surface of the adjacent third refraction unit 131 through the bottom surface of the triangular prism portion, that is, a plurality of third refraction units 131 are connected into a whole through the same third bottom surface, in some embodiments, referring to fig. 7, the second bottom surface and the third bottom surface are the same plane, that is, the plurality of second refraction units 121 and the plurality of third refraction units 131 are all arranged on the same bottom surface; alternatively, in another embodiment, referring to fig. 1, the lens column 1 further includes a connecting portion 14, the connecting portion 14 is a plane with a certain thickness, the plane with a certain thickness is disposed below the second bottom surface and the third bottom surface, and the plurality of second refraction units 121 and the plurality of third refraction units 131 are connected into a whole, that is, the bottom surface of the lens column 1 has a certain thickness. The utility model discloses in, the quantity of second refraction unit 121 and third refraction unit 131 is more, and the picture of throwing out is then more fine and smooth, and the mole line still less.

In some embodiments, referring to fig. 9, the second connection surface 1212 and the bottom surface of the lens column 1 form a first angle, and the third connection surface 1312 and the bottom surface of the lens column 1 form a second angle, wherein the first angle and the second angle are disposed symmetrically with respect to the central axis of the first refraction element 11, in the present invention, the angles of the first angle and the second angle are 85 ° to 95 °, when the angles of the first angle and the second angle are the same, the refraction effect of the optical lens is the best, of course, the first angle and the second angle may be two angles with different angles, and only the opening directions of the first angle and the second angle are symmetrical with respect to the central line of the first exit surface 111. As a preferred embodiment, the first angle and the second angle are both 90 °, i.e. the second connecting surface 1212 and the third connecting surface 1312 are both arranged perpendicular to the bottom surface of the lens column 1.

As a first embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 8, the first exit surface 111 is a curved surface with a symmetrical structure, wherein the curved surface can be a perfect circular arc surface or an elliptical arc surface, the axis of symmetry of the curved surface is the central axis of the first refraction element 11, and the axis of symmetry is perpendicular to the bottom surface of the lens barrel 1, the curvatures of the second exit surface 1211 and the third exit surface 1311 are continuous with the curvature of the first exit surface 111, that is, when the curved surface is a perfect circular arc surface, the curvatures of the second exit surface 1211 and the third exit surface 1311 are the same as the curvature of the first exit surface 111; when the curved surface is an elliptical curved surface, the curvatures of the second emission surface 1211, the first emission surface 111 and the third emission surface 1311 sequentially change and are continuous, so as to ensure that the image frames refracted by the lens barrel 1 still keep continuous. In this embodiment, one of the second connection surfaces 1212 connects the first emission surface 111 and the second emission surface 1211, one of the third connection surfaces 1312 connects the first emission surface 111 and the third emission surface 1311, the other second connection surfaces 1212 connect the adjacent second emission surfaces 1211, the other third connection surfaces 1312 connect the adjacent third emission surfaces 1311, and the second emission surfaces 1211 and the third emission surfaces 1311 are symmetrically disposed about the central axis of the first refractive element 11.

As a second embodiment of the present invention, referring to fig. 3, 4 and 9, the first emergent surface 111 is a planar combination of two mutually included angles, and two planar symmetry is set up, the axis of symmetry is the central axis of the first refraction element 11, and the axis of symmetry is perpendicular to the bottom surface of the lens column 1. Second emission surface 1211 is parallel to a plane of one of first emission surfaces 111, and third emission surface 1311 is parallel to a plane of the other of first emission surfaces 111. The slopes of the second outgoing surface 1211 and the third outgoing surface 1311 are the same as those of the first outgoing surface 111, respectively, so as to ensure that the image frames refracted by the lens barrel 1 still keep continuous. In this embodiment, each second exit surface 1211 and each third exit surface 1311 form an angle smaller than 90 ° with the bottom surface of the lens barrel 1, one of the second connection surfaces 1212 connects the first exit surface 111 and the second exit surface 1211, one of the third connection surfaces 1312 connects the first exit surface 111 and the third exit surface 1311, the other second connection surfaces 1212 connect each adjacent second exit surface 1211, and the other third connection surfaces 1312 connect each adjacent third exit surface 1311.

As a third embodiment of the present invention, referring to fig. 5, 6 and 10, on the basis of the second embodiment, the first emitting surface 111 is a combination of three planes, the three planes include a horizontal top surface, and the other two surfaces are inclined planes with a certain included angle, and the two sides are symmetrically disposed on the two sides of the horizontal top surface. In this embodiment, the axis of symmetry of the first exit surface 111 is the central axis of the first refractive element 11, and the axis of symmetry is perpendicular to the bottom surface of the lens barrel 1, the second exit surface 1211 and the third exit surface 1311 are respectively disposed parallel to the two inclined surfaces of the first exit surface 111, and the second exit surface 1211 and the third exit surface 1311 are disposed symmetrically with respect to the central axis of the first exit surface 111. In the present embodiment, the horizontal top surface is preferably a plane parallel to the bottom surface of the lens column 1, but may also be a symmetrically disposed inclined surface or curved surface, which is not limited herein.

The utility model provides a bore hole 3D display device still provides, refer to fig. 7-fig. 9, including above-mentioned optical lens, still include display screen 2, wherein, display screen 2 includes a plurality of groups pixel unit 21, and pixel unit 21 includes at least one left eye pixel unit 211 that corresponds with the left eye to and at least one right eye pixel unit 212 that corresponds with the right eye, the lens post 1 in every above-mentioned embodiment all corresponds at least a set of pixel unit 21. The utility model discloses in, the image of left eye pixel unit 211 can only be seen through the left eye after lens post 1 refraction, and the image of right eye pixel unit 212 can only be seen through the right eye after lens post 1 refraction. In some embodiments, the second refraction units 121 are disposed on the left-eye pixel units 211, the third refraction units are disposed on the right-eye pixel units 212, and the central axis of the lens column 1 is preferably the same as the central axis of the corresponding pixel unit 21, so that the image refraction is more uniform.

In some embodiments, the optical lens provided by the present invention can be directly disposed on the display screen 2, or, in other embodiments, the optical lens and the display screen 2 can also be directly disposed with other transparent media, such as media that light rays such as glass and acrylic can pass through.

Specifically, referring to fig. 11, as a first embodiment of the naked-eye 3D display screen of the present invention, the lens column 1 includes a first refraction member 11 having a symmetrical structure, and a second refraction member 12 and a third refraction member 13 respectively disposed at two sides of the first refraction member 11; the first refraction member 11 includes a curved surface with a symmetrical structure and a first exit surface 111, the symmetry axis of the first exit surface 111 is perpendicular to the screen 2, the second refraction member 12 and the third refraction member 13 include a plurality of second exit surfaces 1211 and third exit surfaces 1311, respectively, in this embodiment, the second exit surfaces 1211 and the third exit surfaces 1311 are disposed symmetrically with the central axis of the first refraction member 11 as the axis, and the curvatures of the second exit surfaces 1211 and the third exit surfaces 1311 are the same as or continuously change from the curvature of the first exit surface 111, so that the images on the display screen 2 are still continuous after being refracted by the lens column 1. The second refractive element 12 corresponds to at least one left-eye pixel unit 211, and the third refractive element 13 corresponds to at least one right-eye pixel unit 212.

Referring to fig. 12, as a second embodiment of the naked eye 3D display screen of the present invention, the lens column 1 includes a first refraction element 11 having a symmetrical structure, and a second refraction element 12 and a third refraction element 13 respectively disposed at two sides of the first refraction element 11; the first refraction element 11 includes a first exit surface 111, the first exit surface 111 is a combination of two planes forming a certain included angle, and the two planes are symmetrically disposed, a symmetry axis of the first exit surface 111 is a central axis of the first refraction element 11, and the symmetry axis is perpendicular to the screen 2, the second refraction element 12 and the third refraction element 13 respectively include a plurality of second exit surfaces 1211 and third exit surfaces 1311, in this embodiment, the second exit surfaces 1211 and the third exit surfaces 1311 are symmetrically disposed with the central axis of the first refraction element 11 as an axis, and the second exit surfaces 1211 and the third exit surfaces 1311 are parallel to two inclined surfaces of the first exit surface 111 respectively. The second refractive element 12 corresponds to at least one left-eye pixel unit 211, and the third refractive element 13 corresponds to at least one right-eye pixel unit 212.

Referring to fig. 13, as the utility model discloses bore hole 3D display screen's third embodiment, on embodiment two's basis, first emitting surface 111 is three planar combination, including a horizontal top surface in the three plane, this horizontal top surface both sides are located for the inclined plane that is certain contained angle each other to all the other two sides, and the symmetry axis of first emitting surface 111 is the axis of first refraction piece 11, and the perpendicular screen of this symmetry axis 2, and second emitting surface 1211 and third emitting surface 1311 use the axis of first refraction piece 11 to set up as the axial symmetry. The second refractive element 12 corresponds to at least one left-eye pixel unit 211, and the third refractive element 13 corresponds to at least one right-eye pixel unit 212.

The utility model provides a bore hole 3D display device can select any one display device in above-mentioned embodiment according to the projection needs, through setting up second refraction unit 121 and third refraction unit 131, reduces the height of lens post 1 by a wide margin, simultaneously the utility model discloses in, the quantity of preferred second refraction unit 121 and third refraction unit 131 is more than 2, and the quantity of second refraction unit 121 and third refraction unit 131 is more, and the picture of projecting is more exquisite, and the mole line that display device produced still less.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An optical lens comprises at least two lens columns (1) which are made of the same material and arranged in parallel, wherein the lens columns (1) are convex lenses, and the optical lens is characterized in that the lens columns (1) comprise first refraction pieces (11) with symmetrical structures, and second refraction pieces (12) and third refraction pieces (13) which are respectively arranged on two sides of the first refraction pieces (11); the second refraction piece (12) and the third refraction piece (13) are symmetrically arranged about the central axis of the first refraction piece (11) and have symmetric refraction directions; the second refracting part (12) and the third refracting part (13) respectively comprise at least two refracting units which are arranged in parallel; the second refracting part (12) and the third refracting part (13) have the same refractive index as the first refracting part (11).

2. The optical lens according to claim 1, wherein the top surface of the first refractive member (11) is a first exit surface (111) with a symmetrical structure, and the first exit surface (111) is arranged with the central axis of the first refractive member (11) as an axis;

the first emergent surface (111) is a curved surface, a plane or a combination of a plurality of planes.

3. The optical lens according to claim 2, characterized in that each second refractive element (12) is formed by at least two second refractive units (121) arranged side by side in sequence, and each third refractive element (13) is formed by at least two third refractive units (131) arranged side by side in sequence;

the second refraction unit (121) and the third refraction unit (131) are symmetrically arranged one by taking the central axis of the first refraction piece (11) as an axis.

4. The optical lens according to claim 3, wherein the second refraction unit (121) and the third refraction unit (131) respectively comprise at least one triangular prism-shaped portion, and the top surface of the triangular prism-shaped portion of the second refraction unit (121) is a second exit surface (1211) for emitting the refracted light, and the side surface is a second connection surface (1212); the top surface of the triangular prism-shaped part of the third refraction unit (131) is a third emergent surface (1311) for emitting refracted rays, and the side surface is a third connecting surface (1312);

at least two second emergent surfaces (1211) and at least two second connecting surfaces (1212) are arranged in a staggered and continuous mode, and at least two third emergent surfaces (1311) and at least two third connecting surfaces (1312) are arranged in a staggered and continuous mode.

5. An optical lens according to claim 4, characterized in that at least two of said second connection faces (1212) and at least two of said third connection faces (1312) are of the same height;

or the widths of the at least two second refraction units (121) and the at least two third refraction units (131) are the same.

6. The optical lens according to claim 5, wherein each second refractive unit (121) forms the second refractive element (12) by arranging a bottom surface of a triangular prism portion thereof contiguous to a bottom surface of an adjacent second refractive unit (121), and each third refractive unit (131) forms the third refractive element (13) by arranging a bottom surface of a triangular prism portion thereof contiguous to a bottom surface of an adjacent third refractive unit (131);

or, the lens column (1) further comprises a connecting part (14), and the second refraction unit (121) and the third refraction unit (131) are connected into a whole through the connecting part (14).

7. The optical lens of claim 6, wherein the second connecting surface (1212) forms a first angle with the bottom surface of the lens barrel (1), and the third connecting surface (1312) forms a second angle with the bottom surface of the lens barrel (1), wherein the first angle and the second angle are axisymmetrically arranged with respect to the central axis of the first refractive element (11), and the first angle and the second angle are both 85 ° to 95 °, respectively.

8. The optical lens according to claim 4, wherein the first exit surface (111), the second exit surface (1211) and the third exit surface (1311) are each a curved surface symmetrically disposed about a central axis of the first refractive member (11), and the curvatures of the second exit surface (1211) and the third exit surface (1311) are the same as the curvature of the first exit surface (111), or the curvatures of the second exit surface (1211), the first exit surface (111) and the third exit surface (1311) are continuous;

or, the first exit surface (111) is a plane or a combination of planes which are symmetrical about a central axis of the first refraction member (11), the second exit surface (1211) and the third exit surface (1311) are planes which are symmetrical about the central axis of the first refraction member (11), an included angle between each second exit surface (1211) and each third exit surface (1311) and the bottom surface of the lens column (1) is smaller than 90 °, and the second exit surface (1211) and the third exit surface (1311) on two sides of the central line of the first exit surface (111) are respectively arranged in parallel with the first exit surface (111) on the same side portion.

9. A naked-eye 3D display device comprising the optical lens of any one of claims 1 to 8, and further comprising a display screen (2), the display screen (2) comprising at least one set of pixel elements (21), wherein the pixel elements (21) comprise at least one left-eye pixel element (211) corresponding to a left eye and at least one right-eye pixel element (212) corresponding to a right eye, and wherein each lens column (1) corresponds to at least one set of pixel elements (21).

10. A naked eye 3D display device according to claim 9, wherein the optical lens is provided directly on the display screen (2);

or a light-transmitting medium is arranged between the optical lens and the display screen (2).

Images