US 2026/0227639 A1Published application

Lens assembly, optical system, and display device

AssigneeHonor Device Co., Ltd.

InventorsHailiang Liang, Zhicheng Ding, Bin Yan

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Abstract

Embodiments of this application relate to the field of display technologies, and provide a lens assembly, an optical system, and a display device. The lens assembly includes a plurality of lenses sequentially arranged from an object side to an image side, an optical splitting element, a first quarter-wave plate, and a reflective polarization element that are sequentially arranged from the object side to the image side, and a lens barrel. At least one of the first quarter-wave plate and the reflective polarization element is independent of the plurality of lenses and fastened to the lens barrel; and at least one of the first quarter-wave plate and the reflective polarization element is bonded to the bonding surface. The bonding surface is a quadric surface whose curvature is zero in at least one direction.

Claims20

Dependent claims

A lens assembly, comprising:

a plurality of lenses sequentially arranged from an object side to an image side, wherein each lens comprises an object side surface and an image side surface that are disposed opposite to each other, the object side surface of each lens faces the object side, and the image side surface of each lens faces the image side;
an optical splitting element, a first quarter-wave plate, and a reflective polarization element that are sequentially arranged from the object side to the image side;
and
a lens barrel, wherein the plurality of lenses, the optical splitting element, the first quarter-wave plate, and the reflective polarization element are all located in the lens barrel, and are all located on an optical path between the object side and the image side, wherein
at least one of the first quarter-wave plate and the reflective polarization element is independent of the plurality of lenses and fastened to the lens barrel;
or the object side surfaces and the image side surfaces of the plurality of lenses comprise at least one bonding surface, at least one of the first quarter-wave plate and the reflective polarization element is bonded to the bonding surface, and the bonding surface is a quadric surface whose curvature is zero in at least one direction;
wherein a surface profile equation of the quadric surface whose curvature is zero in at least one direction is:
Z
1
=
c
x
⁢
x
2
+
c
y
⁢
y
2
1
+
1
-
(
1
+
k
x
)
⁢
c
x
⁢
x
2
-
(
1
+
k
y
)
⁢
c
y
⁢
y
2
;
and
in the surface profile equation of the quadric surface whose curvature is zero in at least one direction,
c
x
=
1
R
⁢
x
,
c
y
=
1
R
⁢
y
,
Rx is a curvature radius of the bonding surface in a first direction, Ry is a curvature radius of the bonding surface in a second direction, Z1 is a sagittal height of the bonding surface in a third direction, the first direction, the second direction, and the third direction are perpendicular to each other, kx and ky are conic coefficients, and at least one of Rx and Ry has an infinite value.

67 more elements

An optical system, comprising:

a lens assembly and a display, wherein the display located on an object side of the lens assembly, wherein the display is configured to emit image light to the lens assembly;
Wherein the lens assembly comprises:
a plurality of lenses sequentially arranged from an object side to an image side, wherein each lens comprises an object side surface and an image side surface that are disposed opposite to each other, the object side surface of each lens faces the object side, and the image side surface of each lens faces the image side;
an optical splitting element, a first quarter-wave plate, and a reflective polarization element that are sequentially arranged from the object side to the image side;
and
a lens barrel, wherein the plurality of lenses, the optical splitting element, the first quarter-wave plate, and the reflective polarization element are all located in the lens barrel, and are all located on an optical path between the object side and the image side, wherein
at least one of the first quarter-wave plate and the reflective polarization element is independent of the plurality of lenses and fastened to the lens barrel;
or the object side surfaces and the image side surfaces of the plurality of lenses comprise at least one bonding surface, at least one of the first quarter-wave plate and the reflective polarization element is bonded to the bonding surface, and the bonding surface is a quadric surface whose curvature is zero in at least one direction;
and
wherein a surface profile equation of the quadric surface whose curvature is zero in at least one direction is:
Z
1
=
c
x
⁢
x
2
+
c
y
⁢
y
2
1
+
1
-
(
1
+
k
x
)
⁢
c
x
⁢
x
2
-
(
1
+
k
y
)
⁢
c
y
⁢
y
2
;
and
in the surface profile equation of the quadric surface whose curvature is zero in at least one direction,
c
x
=
1
R
⁢
x
,
c
y
=
1
R
⁢
y
,
Rx is a curvature radius of the bonding surface in a first direction, Ry is a curvature radius of the bonding surface in a second direction, Z1 is a sagittal height of the bonding surface in a third direction, the first direction, the second direction, and the third direction are perpendicular to each other, kx and ky are conic coefficients, and at least one of Rx and Ry has an infinite value.

70 more elements

A display device, comprising:

a housing;
and
a first optical system and a second optical system that are mounted on the housing, wherein
the first optical system and the second optical system are optical systems respectively comprise a lens assembly and a display;
wherein the display located on an object side of the lens assembly, wherein the display is configured to emit image light to the lens assembly;
wherein the lens assembly comprises:
a plurality of lenses sequentially arranged from an object side to an image side, wherein each lens comprises an object side surface and an image side surface that are disposed opposite to each other, the object side surface of each lens faces the object side, and the image side surface of each lens faces the image side;
an optical splitting element, a first quarter-wave plate, and a reflective polarization element that are sequentially arranged from the object side to the image side;
and
a lens barrel, wherein the plurality of lenses, the optical splitting element, the first quarter-wave plate, and the reflective polarization element are all located in the lens barrel, and are all located on an optical path between the object side and the image side, wherein
at least one of the first quarter-wave plate and the reflective polarization element is independent of the plurality of lenses and fastened to the lens barrel;
or the object side surfaces and the image side surfaces of the plurality of lenses comprise at least one bonding surface, at least one of the first quarter-wave plate and the reflective polarization element is bonded to the bonding surface, and the bonding surface is a quadric surface whose curvature is zero in at least one direction;
and
wherein a surface profile equation of the quadric surface whose curvature is zero in at least one direction is:
Z
1
=
c
x
⁢
x
2
+
c
y
⁢
y
2
1
+
1
-
(
1
+
k
x
)
⁢
c
x
⁢
x
2
-
(
1
+
k
y
)
⁢
c
y
⁢
y
2
;
and
in the surface profile equation of the quadric surface whose curvature is zero in at least one direction,
c
x
=
1
R
⁢
x
,
c
y
=
1
R
⁢
y
,
Rx is a curvature radius of the bonding surface in a first direction, Ry is a curvature radius of the bonding surface in a second direction, Z1 is a sagittal height of the bonding surface in a third direction, the first direction, the second direction, and the third direction are perpendicular to each other, kx and ky are conic coefficients, and at least one of Rx and Ry has an infinite value.

74 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/577,219Filed 24 Mar 2026
Priority: CN 202311323567.811 Oct 2023
Published: 6 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G02B 27/0172
Head mounted: characterised by optical features
G02B 27/286
For polarising: for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
G02B 1/04
Optical elements characterised by the material of which they are made; Optical coatings for optical elements: made of organic materials, e.g. plastics
G02B 3/04
With non-spherical faces: with continuous faces that are rotationally symmetrical but deviate from a true sphere , e.g. so called "aspheric" lenses