WO2020237684A1 - 光波导镜片及近眼显示装置 - Google Patents

光波导镜片及近眼显示装置 Download PDF

Info

Publication number
WO2020237684A1
WO2020237684A1 PCT/CN2019/089689 CN2019089689W WO2020237684A1 WO 2020237684 A1 WO2020237684 A1 WO 2020237684A1 CN 2019089689 W CN2019089689 W CN 2019089689W WO 2020237684 A1 WO2020237684 A1 WO 2020237684A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
optical waveguide
interface
waveguide lens
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/089689
Other languages
English (en)
French (fr)
Inventor
郑琼羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to CN201980079835.1A priority Critical patent/CN113330349A/zh
Priority to PCT/CN2019/089689 priority patent/WO2020237684A1/zh
Publication of WO2020237684A1 publication Critical patent/WO2020237684A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays

Definitions

  • This application relates to the field of near-eye display devices, and in particular to an optical waveguide lens and a near-eye display device.
  • near-eye display devices use optical waveguide lenses to image the display light of the display device.
  • the field of view of the optical waveguide lens is often proportional to the size of the display device. Therefore, it is difficult for the optical waveguide lens to reduce the volume of the display device or optical engine while keeping the field of view unchanged, resulting in the overall near-eye display device.
  • the weight and volume cannot be made thinner and reduce the user experience.
  • This application provides an optical waveguide lens and a near-eye display device.
  • the present application provides an optical waveguide lens, wherein the optical waveguide lens includes a light exit part, a transmission part and a light entrance part, the transmission part is connected between the light exit part and the light entrance part, and the light entrance part
  • the part is used for light entering
  • the light exiting part is used for light exiting
  • the transmission part is provided with a light concentrating part for converging the entering light.
  • the present application provides a near-eye display device, wherein the near-eye display device includes the above-mentioned optical waveguide lens, the near-eye display device further includes a display device, and the display device is close to the light entrance portion and faces the light entrance portion Emit the display light.
  • the transmission part can transmit the light entering the light entrance part to the light exit part, and the transmission part is provided with a condenser
  • the light part and the light condensing part can converge the light entering the light entrance part, while maintaining the field angle of the light exit part unchanged, so that the display device can be reduced in size on the convergent light propagation path, so that the light guide lens And the near-eye display device meets the requirements of light and thin use, and improves user experience.
  • Fig. 1 is a schematic diagram of an optical waveguide lens provided by one embodiment of the present application.
  • Fig. 2 is a schematic cross-sectional view of the optical waveguide lens of Fig. 1 along II-II.
  • Fig. 3 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • Fig. 4 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • Fig. 5 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • Fig. 6 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • Fig. 7 is a top view of the optical waveguide lens of Fig. 6 of the present application.
  • FIG. 8 is another schematic diagram of the optical waveguide lens provided by one embodiment of the present application.
  • Fig. 9 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 10 is another schematic diagram of the optical waveguide lens provided by one of the embodiments of the present application.
  • FIG. 11 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 12 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 13 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 14 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 15 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 16 is a schematic diagram of an optical waveguide lens provided by another embodiment of the present application.
  • FIG. 17 is a schematic diagram of a near-eye display device provided by one embodiment of the present application.
  • FIG. 18 is a schematic diagram of a near-eye display device provided by another embodiment of the present application.
  • FIG. 19 is a schematic diagram of a near-eye display device provided by another embodiment of the present application.
  • a component when a component is said to be “fixed to” another component, it can be directly on the other component or a central component may also exist. When a component is considered to be “connected” to another component, it can be directly connected to another component or there may be a centered component at the same time.
  • the present application provides an optical waveguide lens 100.
  • the optical waveguide lens 100 includes a light exit portion 10, a transmission portion 20, and a light entry portion 30.
  • the transmission portion 20 is connected to one of the light exit portion 10 and the light entry portion 30. between.
  • the light entrance part 30 is used for light entering, and the light exit part 10 is used for light exiting.
  • the transmission part 20 is provided with a light-concentrating part 201, and the light-concentrating part 201 is used to condense the incoming light. It is understandable that the optical waveguide lens 100 can be applied to a near-eye display device to realize augmented reality display, holographic display, virtual reality display, and the like.
  • the light emitting part 10 of the optical waveguide lens 100 exports light images to provide a display image.
  • the transmission part 20 can transmit the light entering the light entrance part 30 to the light exit part 10, and the transmission part 20 is provided with a light collection part 201
  • the light condensing part 201 can converge the light entering the light entering part 30, so that the display device 210 can be reduced in size on the convergent light propagation path while maintaining the field angle of the light exiting part 10 unchanged, so that The optical waveguide lens 100 and the near-eye display device meet the requirements of light and thin use and improve user experience.
  • the optical waveguide lens 100 has a rectangular plate shape.
  • the optical waveguide lens 100 includes a first short side 110, a second short side 120 disposed opposite to the first short side 110, and two long sides 130 connecting the first short side 110 and the second short side 120.
  • the light entrance portion 30 is disposed adjacent to the first short side 110.
  • the optical waveguide lens 100 includes a first surface 101 and a second surface 102 opposite to the first surface 101.
  • the first surface 101 is substantially parallel to the second surface 102.
  • the first curved interface 21 is disposed between the first surface 101 and the second surface 102.
  • the light entrance part 30 is arranged at the edge of the optical waveguide lens 100.
  • the light entrance portion 30 is provided with a light entrance surface 31 connecting the first surface 101 and the second surface 102.
  • the light incident surface 31 and the first surface 101 form a preset angle (as shown in FIG. 2).
  • the incident angle of the light incident on the light incident surface 31 is adjusted, so that the light can be totally reflected back and forth between the first surface 101 and the second surface 102 to reduce The loss when light propagates in the optical waveguide lens 100.
  • the light emitting part 10 emits light from the first surface 101 so that the user can observe the image in the direction toward the first surface 101.
  • the light condensing part 201 can converge the light propagation path of the light exiting part 10 toward the light entering part 10, so that the display device 210 with a smaller volume can be arranged close to the entrance.
  • the light part 30 can meet the light propagation requirement.
  • the light-emitting portion 10 is provided with a plurality of reflecting surfaces 11 arranged in parallel.
  • the light condensed by the light-converging portion 201 reaches the light-emitting portion 10 through the transmission portion 20, and is reflected by the reflecting surfaces 11 before being emitted.
  • Each reflecting surface 11 is arranged obliquely, that is, the reflecting surface 11 and the first surface 101 form an angle, and each reflecting surface 11 extends in a straight line on the plane parallel to the optical waveguide lens 100.
  • the multiple reflecting surfaces 11 couple and reflect light to the first surface 101 to achieve coupling and output of light from the first surface 101.
  • the light condensing part 201 includes a first interface that protrudes toward the light exiting part 10 or the light entering part 30 on the plane of the parallel light waveguide lens 100.
  • the human eye 01 as the light source, the light is transmitted to the light guide lens 100 through the light emitting part 10, and the light is transmitted to the first interface through total reflection back and forth in the light guide lens 100, refracted at the first interface, and directed toward the light entrance part 30 Convergence, it is possible to keep the field of view unchanged while reducing the volume of the display device 210.
  • the first interface is a first arc-shaped interface 21.
  • the first curved interface 21 is connected between the first surface 101 and the second surface 102.
  • the first curved interface 21 extends on the plane of the parallel light waveguide lens 100 as a first curve convex toward the light exit portion 10.
  • the refractive index of the first curved interface 21 on the side close to the light entrance portion 30 is greater than the refractive index of the first curved interface 21 on the side near the light exit portion 10. It can be understood that the portion between the first curved interface 21 and the light exit portion 10 forms a “convex lens structure” so that the first curved interface 21 forms a convergent light propagation path toward the light entrance portion 30.
  • the human eye 01 as shown in Figure 1 and Figure 2 as the light emitting source.
  • the light is transmitted to the light guide lens 100 through the light exit part 10, and the light passes through the light guide lens 100.
  • the back and forth total reflection is conducted to the first arc-shaped interface 21, refracted at the first arc-shaped interface 21, and converges toward the light entrance portion 30, so that the field of view can be kept unchanged while the volume of the display device 210 can be reduced.
  • the first interface is a continuous bending surface with a light-concentrating effect, and the continuous bending surface may be composed of a plurality of planes arranged at an angle in sequence.
  • FIG. 3 is substantially the same as the embodiment shown in FIG. 1, except that the first curved interface 21 is convex toward the light entrance portion 30 on the plane of the parallel light guide lens 100
  • the first curve extends.
  • the refractive index of the first curved interface 21 on the side close to the light entrance portion 30 is smaller than the refractive index of the first curved interface 21 on the side near the light exit portion 10. It is understandable that with the human eye as the emission source, the propagation path of light changes from the light exit portion 10 through the first arc-shaped interface 21 and then changes the propagation path, and then travels through the first arc-shaped interface 21 toward the light entrance portion 30 to form a convergent light. path.
  • the light is refracted after being propagated through the first arc-shaped interface 21 from the light-emitting portion 10, and converges toward the light-inlet portion 30, so that the field angle of the display device 210 can be kept constant while the volume of the display device 210 can be reduced.
  • FIG. 4 is roughly the same as the embodiment shown in FIG. 2, except that the light entrance portion 30 may also be provided with a light entrance area on the edge of the first surface 101 or the second surface 102.
  • An inclined reflecting surface 32 is provided between the first surface 101 and the second surface 102.
  • the inclined direction of the inclined reflecting surface 32 depends on whether the light entering area is arranged on the edge of the first surface 101 or the second surface 102.
  • the light entrance area is set on the edge of the first surface 101, and the angle between the inclined reflective surface 32 and the first surface 101 on the light propagation side is an acute angle.
  • the size of the included angle satisfies the total reflection of the light incident on the inclined reflecting surface 32.
  • the light is incident through the light entrance area at the edge of the first surface 101 or the second surface 102, and after being reflected by the inclined reflecting surface 32, a total reflection is formed between the first surface 101 and the second surface 102, and the light is transmitted to the light exit through the transmission part 20 ⁇ 10.
  • each reflecting surface 11 is arranged in an arc-shaped curve.
  • Each reflecting surface 11 is arranged in an arc-shaped curve in a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130, and each reflecting surface 11 extends linearly on the plane of the parallel optical waveguide lens 100.
  • the reflecting surface 11 is arranged in an arc-shaped curve, and the human eye 01 is used as the emission source. After the light enters the light exit portion 10, it reaches one of the reflecting surfaces 11. A part of the light is reflected by the reflecting surface 11 to the next reflecting surface 11 and can pass through one.
  • the reflective surface 11 finally converges in the transmission portion 20 after passing through the multiple reflective surfaces 11, and then further converges after passing through the first curved interface 21 of the transmission portion 20, so that the display device 210 can be further reduced in size.
  • FIGS. 6 and 7 are substantially the same as the embodiment shown in FIG. 2 except that the light incident surface 31 is a curved surface.
  • the light incident surface 31 protrudes in a direction away from the light exit portion 10.
  • the light incident surface 31 can be curved along an arc curve on a plane perpendicular to the light guide lens 100 and parallel to the long side 130 (as shown in FIG. 6), or it can extend along an arc curve on the plane of the parallel light guide lens 100 (e.g. Figure 7).
  • the light propagation path is refracted from the transmission part 20 after passing through the light incident surface 31 to form a further convergent light propagation path, which can further reduce the volume of the display device 210.
  • the light condensing part 201 further includes a second interface, which protrudes toward the light exit part 10 or the light entrance part 30 on the plane of the parallel light waveguide lens 100.
  • the human eye 01 as the emission source, the light is refracted at the second interface from the light-emitting portion 10 to the second interface, and converges to the first interface, and then refracts at the first interface to continue to converge, and finally can enter nearer One side of the light portion 30 converges, so that the display device 210 can be reduced to a large extent while maintaining the same angle of view and still meet the light transmission requirements of the light guide lens 100.
  • the first interface is a first arc-shaped interface 21
  • the second interface is a second arc-shaped interface 22
  • the second arc-shaped interface 22 is located at
  • the first curved interface 21 is far away from the light entrance portion 30, and the second curved interface 22 extends toward the light entrance portion 30 or extends toward the light exit portion 10 on the plane of the parallel light waveguide lens 100.
  • the second arc-shaped interface 22 extends on the plane of the parallel light waveguide lens 100 as a second curve convex toward the light entrance portion 30.
  • the refractive index of the second curved interface 22 near the light entrance portion 30 is smaller than the refractive index of the second curved interface 22 near the light exit portion 10.
  • the light is refracted at the second arc interface 22 from the light exit portion 10 to the second arc interface 22, and converges to the first arc interface 21, and at the first arc interface 21 Refraction to continue to converge, and finally converge on the side close to the light entrance portion 30, so that the display device 210 can be reduced to a large extent while maintaining the same angle of view and still meet the light transmission of the optical waveguide lens 100 demand.
  • the first arc-shaped interface 21 and the second arc-shaped interface 22 can be respectively close to the light entrance portion 30 and the light exit portion 10, that is, by adjusting the distance between the first arc-shaped interface 21 and the second arc-shaped interface 22, the degree of light convergence can be adjusted , It is convenient to adjust the size of the display device 210.
  • the second interface is a continuous bending surface with a light-concentrating effect, and the continuous bending surface may be composed of a plurality of planes arranged at an angle in sequence.
  • a first light guide portion 211 is formed between the first arc-shaped interface 21 and the light entrance portion 30, and a second light guide portion 212 is formed between the first arc-shaped interface 21 and the second arc-shaped interface 22.
  • a third light guide portion 213 is formed between the second curved interface 22 and the light emitting portion 10. The refractive index of the first light guide 211 is different from the refractive index of the second light guide 212, and the refractive index of the second light guide 212 is different from the refractive index of the third light guide 213.
  • the refractive index of the first light guide portion 211 may be greater than the refractive index of the second light guide portion 212 or may be smaller than the refractive index of the second light guide portion 212.
  • the refractive index of the second light guide part 212 may be greater than the refractive index of the third light guide part 213.
  • the refractive index relationship between the first light guide portion 211, the second light guide portion 212, and the third light guide portion 213 needs to be determined in conjunction with the convex or concave directions of the first curved interface 21 and the second curved interface 22, In order to satisfy the propagation path of light, the second arc-shaped interface 22 and the first arc-shaped interface 21 are refracted and then shrunk, so that the size of the display device 210 becomes smaller.
  • the first curved interface 21 extends on the plane of the parallel light guide lens 100 as a first curve protruding toward the light exit portion 10
  • the second curved interface 22 extends on the parallel light guide lens 100.
  • the plane of 100 extends in a second curve convex toward the light entrance portion 30.
  • the refractive index of the first light guide portion 211 is greater than the refractive index of the second light guide portion 212
  • the refractive index of the third light guide portion 213 is greater than the refractive index of the second light guide portion 212
  • the refractive index of the third light guide portion 213 is equal to The refractive index of the first light guide 211.
  • the refractive index of the third light guide portion 213 is equal to the refractive index of the first light guide portion 211, and the difference in refractive index may be less than a certain preset range, and is not limited to being completely equal in value.
  • the refractive index of the first light guide portion 211 may also be greater or smaller than the refractive index of the third light guide portion 213.
  • FIG. 10 is roughly the same as the embodiment shown in FIG. 8, except that the second arcuate interface 22 is a first convex surface on the plane of the parallel light guide lens 100 toward the light emitting portion 10.
  • the second curve extends.
  • the refractive index of the first light guide portion 211 is greater than the refractive index of the second light guide portion 212
  • the refractive index of the second light guide portion 212 is greater than the refractive index of the third light guide portion 213.
  • the human eye as the emission source, the light from the light exit portion 10 successively converges through the second arc-shaped interface 22 and the first arc-shaped interface 21, so that the display device 210 can be further reduced in size and meet the requirement of a constant viewing angle.
  • first arc-shaped interface 21 and the second arc-shaped interface 22 of the present application can be convex in the same direction on the plane of the parallel light guide lens 100, or can It protrudes in the opposite direction.
  • Different combinations of the first arc-shaped interface 21 and the second arc-shaped interface 22 are set as needed, and the refractive index of the first light guide 211, the refractive index of the second light guide 212 and the third light guide are combined as needed
  • the refractive index of 213 is set in different combinations, so that when the human eye is used as the emission source, the light is condensed by the light-condensing part 201 of the transmission part 20 after passing through the light-emitting part 10, and is converged and propagated to the display device at the light-in part 30 210, and then a display device 210 with a smaller volume can be provided.
  • first curved interface 21 extends in a first curve a protruding toward the light exit portion 10 on the plane of the parallel light guide lens 100.
  • the second curved interface 22 extends on the plane of the parallel light waveguide lens 100 as a second curve b protruding toward the light entrance portion 30.
  • the absolute value of the radius of curvature of the first curve a is greater than the absolute value of the radius of curvature of the second curve b.
  • the absolute value of the radius of curvature of the first curve a may also be smaller than the absolute value of the radius of curvature of the second curve b.
  • the first arc-shaped interface 21 and the second arc-shaped interface 22 satisfy the following arc parameter formula:
  • c is the radius of curvature
  • k is the coefficient of the quadratic curve
  • r is the distance from the point on the curve to the origin
  • ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 , ⁇ 6 , ⁇ 7 , and ⁇ 8 are 2 in order , 4, 6, 8, 10, 12, 14, 16 order aspheric coefficients.
  • FIG. 11 is substantially the same as the embodiment shown in FIG. 10, except that the first curved interface 21 also extends in a curve on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130.
  • the first curved interface 21 is roughly "spherical.”
  • the first curved interface 21 may extend in a convex curve toward the light exit portion 10 on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130, or may extend in a convex curve toward the light entrance portion 30.
  • the refractive index of the first light guide portion 211 and the refractive index of the second light guide portion 212 need to be determined in combination with the extending direction of the first curved interface 21.
  • the first curved interface 21 extends in a curve on the plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130, and the refractive index of the first light guide 211, the refractive index of the second light guide 212, and the The refractive indices of the three light guides 213 are combined in different forms.
  • the human eye is used as the emission source, the light is refracted by the first arc interface 21 through the light exit 10, so that the light is in a space close to the light entrance 30 Convergence in multiple dimensions.
  • FIG. 12 is substantially the same as the embodiment shown in FIG. 11.
  • the difference is that the second curved interface 22 extends in a curve on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130.
  • the second arcuate interface 22 is roughly "spherical".
  • the second curved interface 22 may extend in a convex curve toward the light exit portion 10 on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130, or may extend in a convex curve toward the light entrance portion 30.
  • the refractive index of the second light guide portion 212 and the refractive index of the third light guide portion 213 need to be determined according to the extending direction of the second curved interface 22.
  • the second curved interface 22 extends in a curve on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130, and the refractive index of the first light guide 211, the refractive index of the second light guide 212, and the The refractive indices of the three light guide parts 213 are combined in different forms to realize the further convergence of the light in multiple dimensions in space close to the light entrance part 30.
  • the light condensing part 201 further includes a third interface, which protrudes toward the light exiting part 10 or the light entering part 30 on the plane of the parallel light waveguide lens 100.
  • the propagation path of the light is refracted by the second interface, the third interface and the first interface in turn, and then can be converged and transmitted toward the light entrance part 30, so that the size of the display device 210 can be reduced.
  • the first interface is a first arc-shaped interface 21, the second interface is a second arc-shaped interface 22, and the third interface is a third arc-shaped interface.
  • Interface 23 A third arc-shaped interface 23 is provided between the first arc-shaped interface 21 and the second arc-shaped interface 22.
  • the third arc-shaped interface 23 is on the plane of the parallel light guide lens 100 and protrudes toward the light entrance portion 30 or toward the light exit.
  • the convex third curve of the portion 10 extends.
  • the third curved interface 23 may extend in a straight line or a curve on a plane perpendicular to the optical waveguide lens 100 and parallel to the long side 130. That is, the third arc-shaped interface 23 may be a "non-spherical arc" or a "spherical arc".
  • the radius of curvature of the third arc-shaped interface 23 is set as required, and the size of the radius of curvature of the third arc-shaped interface 23 depends on the degree of convergence of light rays passing through the third arc-shaped interface 23.
  • the convex or concave directions of the arc-shaped interface 22 and the third arc-shaped interface 23 are determined to meet the requirements of the light's propagation path after being refracted by the second arc-shaped interface 22, the third arc-shaped interface 23, and the first arc-shaped interface 21. , Can converge and conduct toward the light entrance portion 30, so that the size of the display device 210 can be reduced.
  • the degree of convergence of the light near the light entrance part 30 can be adjusted to adjust the size of the display device 210.
  • the third interface is a continuous bending surface with a light-concentrating effect, and the continuous bending surface may be composed of a plurality of planes arranged at an angle in sequence.
  • the light-concentrating part 201 is provided with a plurality of third arc-shaped interfaces 23 arranged in sequence between the first arc-shaped interface 21 and the second arc-shaped interface 22.
  • the radius of curvature of the plurality of third arcuate interfaces 23 may be different from each other.
  • Each third curved interface 23 may protrude toward the light entrance portion 30 or protrude toward the light exit portion 10.
  • the refractive index sizes of the opposite sides of each third arc-shaped interface 23 can also be set in different combinations according to the extending direction of each third arc-shaped interface 23.
  • Each third curved interface 23 satisfies the above-mentioned curved surface parameter formula.
  • each third arc-shaped interface 23 By setting a plurality of third arc-shaped interfaces 23 between the first arc-shaped interface 21 and the second arc-shaped interface 22, the arc parameters of each third arc-shaped interface 23 are set, and each third arc-shaped interface is set.
  • the size of the refractive index on the opposite sides of 23 increases the number of times of light refraction, so that the light converging degree of the light concentrating part 201 on the side close to the light entering part 20 is increased.
  • first surface 101 is a plane or a curved surface
  • second surface 102 is a plane or a curved surface
  • the first surface 101 and the second surface 102 are both flat surfaces.
  • the first surface 101 and the second surface 102 are parallel.
  • the light easily satisfies the condition of total reflection between the first surface 101 and the second surface 102 to ensure that the light is effectively transmitted to the light emitting portion 10 through the transmission portion 20, and a “display plane” that effectively outputs a displayed image can be obtained in the light emitting portion 10.
  • the first surface 101 and the second surface 102 are both curved surfaces.
  • the first surface 101 and the second surface 102 are parallel.
  • the light passes through the transmission part 20 to change the propagation path, and can effectively output the "display curved surface" of the displayed image at the light emitting part 10 to form a structure similar to a "curved display screen" and increase user experience performance.
  • the first surface 101 and the second surface 102 are both curved surfaces.
  • the first surface 101 and the second surface 102 are arranged non-parallel.
  • the first surface 101 and the second surface 102 can be convex in the same direction or convex in the opposite direction, so that the optical waveguide lens 100 can form a "convex lens” or “concave lens” structure, and the radius of curvature of the first surface 101 is smaller than or The radius of curvature is larger than the second surface 102, so that the optical waveguide lens 100 is convenient and the optical waveguide lens 100 can meet the needs of nearsighted users or hyperopic users.
  • the present application also provides a near-eye display device 200.
  • the near-eye display device 200 includes an optical waveguide lens 100.
  • the near-eye display device 200 further includes a display device 210.
  • the display device 210 is close to the light entrance part 30 and faces the light entrance part. 30 emits display light.
  • the display device 210 is a microdisplay.
  • the display device 210 may emit a beam of light to form an image.
  • the light beam emitted by the display device 210 enters the optical waveguide lens 100 from the light entrance portion 30.
  • the display device 210 can be located on a light propagation path converging continuously through the second arc-shaped interface 22 and the first arc-shaped interface 21, so that the width dimension parallel to the first short side 110 can be reduced. Under the condition that the volume of the display device 210 is reduced, the angle of view can be maintained unchanged, so that the near-eye display device 200 is thinner and lighter, and the user experience is improved.
  • the display device 210 abuts against the light incident surface 31 of the light incident portion 30.
  • the gathering point of the first curved interface 21 is located on the display device 210.
  • the focal point of the first arc-shaped interface 21 is located on the display surface of the display 210, which saves the need for collimating devices or collimating devices between the light entrance portion 30 and the display device 210.
  • the functional optical engine device realizes that the near-eye display device 200 has a simple structure, a small volume, and a large field of view performance.
  • FIG. 18 is substantially the same as the embodiment shown in FIG. 17, except that there is a distance between the display device 210 and the light incident surface 31.
  • the light incident surface 31 is a curved surface.
  • the focus point of the light incident surface 31 is located on the display surface of the display device 210, which eliminates the need for a collimator device or an optical engine device with collimation function between the light entrance portion 30 and the display device 210, and realizes a near-eye display device 200's structure is simple and performance.
  • the near-eye display device 200 further includes an optical engine 220.
  • the optical engine 220 is located between the display device 210 and the light entrance portion 30 to couple the display light of the display device 210 to the light entrance portion. 30.
  • the optical engine 220 can collimate and couple the light beam of the display device 210 to the light entrance part 30 so that the light entrance part 30 can obtain a clear light image. Since the optical waveguide lens 100 has the performance of converging the light transmission path, the display device 210 and the optical engine 220 can be set in a smaller volume, and the near-eye display device 200 can be thinner and lighter, with a larger field of view, and improve user experience.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

一种光波导镜片（100）及近眼显示装置（200）。光波导镜片（100）包括出光部（10）、传输部（20）和进光部（30）。传输部（20）连接于出光部（10）和进光部（30）之间。进光部（30）用以供光线进入。出光部（10）用以供光线出射。传输部（20）设有聚光部（201），用于将进入的光线会聚。在维持出光部（10）的视场角不变的情况下，使得显示器件（210）在位于会聚的光线传播路径上可减小体积，使得光波导镜片（100）及近眼显示装置（200）满足轻薄化使用要求，提高用户体验。

Description

光波导镜片及近眼显示装置 技术领域
本申请涉及近眼显示设备领域，具体涉及一种光波导镜片及近眼显示装置。
背景技术
目前近眼显示装置利用光波导镜片对显示器件的显示光线进行成像。光波导镜片的视场角大小往往与显示器件的大小成正比，故光波导镜片在保持视场角大小不变的情况下，难以减小显示器件或光学引擎的体积，导致近眼显示装置的整体重量及体积无法轻薄化，降低用户体验。
发明内容
本申请提供一种光波导镜片及近眼显示装置。
本申请提供一种光波导镜片，其中，所述光波导镜片包括出光部、传输部和进光部，所述传输部连接于所述出光部和所述进光部之间，所述进光部用以供光线进入，所述出光部用以供光线出射，所述传输部设有聚光部，用于将进入的光线会聚。
本申请提供一种近眼显示装置，其中，所述近眼显示装置包括上述光波导镜片，所述近眼显示装置还包括显示器件，所述显示器件靠近所述进光部，并朝向所述进光部发射显示光线。
本申请的光波导镜片及近眼显示装置，通过在光波导镜片的出光部和进光部之间设置传输部，传输部可以将进入进光部的光线传输至出光部，并且传输部设有聚光部，聚光部可以将进入进光部的光线会聚，在维持出光部的视场角不变的情况下，使得显示器件在位于会聚的光线传播路径上可减小体积，使得光波导镜片及近眼显示装置满足轻薄化使用要求，提高用户体验。
附图说明
图1是本申请其中一实施例提供的光波导镜片的示意图。
图2是图1的光波导镜片沿II-II的截面示意图。
图3是本申请另一实施例提供的光波导镜片的示意图。
图4是本申请另一实施例提供的光波导镜片的示意图。
图5是本申请另一实施例提供的光波导镜片的示意图。
图6是本申请另一实施例提供的光波导镜片的示意图。
图7是本申请图6的光波导镜片的俯视图。
图8是本申请其中一实施例提供的光波导镜片的另一示意图。
图9是本申请另一实施例提供的光波导镜片的示意图。
图10是本申请其中一实施例提供的光波导镜片的另一示意图。
图11是本申请另一实施例提供的光波导镜片的示意图。
图12是本申请另一实施例提供的光波导镜片的示意图。
图13是本申请另一实施例提供的光波导镜片的示意图。
图14是本申请另一实施例提供的光波导镜片的示意图。
图15是本申请另一实施例提供的光波导镜片的示意图。
图16是本申请另一实施例提供的光波导镜片的示意图。
图17是本申请其中一实施例提供的近眼显示装置的示意图。
图18是本申请另一实施例提供的近眼显示装置的示意图。
图19是本申请另一实施例提供的近眼显示装置的示意图。
具体实施例
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。在不冲突的情况下，下述的实施例及实施 例中的特征可以相互组合。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1和图2，本申请提供一种光波导镜片100，光波导镜片100包括出光部10、传输部20和进光部30，传输部20连接于出光部10和进光部30之间。进光部30用以供光线进入，出光部10用以供光线出射。传输部20设有聚光部201，聚光部201用于将进入的光线会聚。可以理解的是，光波导镜片100可以应用于近眼显示装置中，以实现增强现实显示、全息显示、虚拟现实显示等。光波导镜片100的出光部10导出光线图像，以提供显示画面。
通过在光波导镜片100的出光部10和进光部30之间设置传输部20，传输部20可以将进入进光部30的光线传输至出光部10，并且传输部20设有聚光部201，聚光部201可以将进入进光部30的光线会聚，实现在维持出光部10的视场角不变的情况下，使得显示器件210在位于会聚的光线传播路径上可减小体积，使得光波导镜片100及近眼显示装置满足轻薄化使用要求，提高用户体验。
在一个实施例中，光波导镜片100呈矩形板件状。光波导镜片100包括第一短边110和相对第一短边110设置的第二短边120，以及连接第一短边110和第二短边120的两个长边130。进光部30设置邻近于第一短边110。光波导镜片100包括第一表面101和相对第一表面101设置的第二表面102。第一表面101大致平行第二表面102。第一弧形界面21设置于第一表面101和第二表面102之间。进光部30设置于光波导镜片100的边缘。进光部30设有连接第一表面101和第二表面102的入光面31。入光面31与第一表面101呈预设夹角(如图2所示)。通过设置入光面31与第一表面101的夹角，从而调整光线入射入光面31的入射角度，以实现光线可在第一表面101和第二表面102之间来回产生全反射，以降低光线在光波导镜片100内传播时的损耗。出光部10由第一表面101出射光线，以实现用户在朝第一表面101方向上可观察图像。请结合图1和图2所示，以人眼01作为发射源，聚光部201可将出光部10的光线传播路径朝向进光部10会聚，以使设置较小体积的显示器件210靠近进光部30即可满足光线传播需求。
本实施方式中，出光部10设有多个平行排列的反射面11，聚光部201会聚的光线经传输部20达到出光部10，并由各反射面11反射之后出射。每一反射面11倾斜设置，即反射面11与第一表面101呈夹角，每一反射面11在平行光波导镜片100的平面上呈直线延伸。光线从入光面31入射后并到达其中一个反射面11，一部分被该反射面11反射至第一表面101，并从第一表面101透射出去，另一部分透过该反射面11达到下一个反射面11。最终多个反射面11将光线耦合反射至第一表面101，以实现从第一表面101耦合输出光线。
聚光部201包括第一界面，所述第一界面在平行光波导镜片100的平面上呈朝向出光部10或朝向进光部30凸出。将人眼01作为光线发射源，光线经过出光部10传导至光波导镜片100内，光线在光波导镜片100内经来回全反射传导至第一界面，在第一界面折射，并朝向进光部30会聚，实现可减小显示器件210体积的情况下维持视场角不变。
在一个实施例中，如图1所示，所述第一界面为第一弧形界面21。第一弧形界面21连接于第一表面101和第二表面102之间。第一弧形界面21在平行光波导镜片100的平面上呈朝向出光部10凸出的第一曲线延伸。第一弧形界面21靠近进光部30一侧的折射率大于第一弧形界面21靠近出光部10一侧的折射率。可以理解的是，第一弧形界面21至出光部10之间的部分形成“凸透镜结构”，以使第一弧形界面21朝进光部30一侧形成会聚的光线传播路径。可以理解的是，由于光的可逆性，请结合图1和图2所示，将人眼01作为光线发射源，光线经过出光部10传导至光波导镜片100内，光线在光波导镜片100内经来回全反射传 导至第一弧形界面21，在第一弧形界面21折射，并朝向进光部30会聚，实现可减小显示器件210体积的情况下维持视场角不变。当然，在其他实施方式中，第一界面为具有聚光作用的连续折弯面，该连续折弯面可由多个依次呈夹角排列的平面构成。
在另一个实施例中，请参阅图3，与图1所示实施例大致相同，不同的是，第一弧形界面21在平行光波导镜片100的平面上呈朝向进光部30凸出的第一曲线延伸。第一弧形界面21靠近进光部30一侧的折射率小于第一弧形界面21靠近出光部10一侧的折射率。可以理解的是，以人眼作为发射源，光线的传播路径由出光部10经第一弧形界面21后改变传播路径，并经第一弧形界面21朝向进光部30形成会聚的光线传播路径。即光线由出光部10经第一弧形界面21传播后折射，并朝向进光部30会聚，实现可减小显示器件210体积的情况下维持视场角不变。
在另一个实施例中，请参阅图4，与图2所示实施例大致相同，不同的是，进光部30也可以是在第一表面101或第二表面102的边缘设置进光区域，并设有位于第一表面101和第二表面102之间的倾斜反射面32，倾斜反射面32的倾斜方向视进光区域是设置在第一表面101或第二表面102的边缘而定。参照图4，在其中一个实施例中，进光区域设置在第一表面101的边缘，倾斜反射面32与第一表面101于光线传播一侧的夹角为锐角。优选的，夹角的大小满足光线在入射至倾斜反射面32全反射。光线经第一表面101或第二表面102边缘的进光区域入射，并经倾斜反射面32反射后，在第一表面101和第二表面102之间形成全反射，经传输部20传导至出光部10。
在另一个实施例中，请参阅图5，与图2所示实施例大致相同，不同的是，每一反射面11呈弧形曲线弯曲设置。每一反射面11在垂直光波导镜片100且平行长边130的平面内呈弧形曲线弯曲设置，并且每一反射面11在平行光波导镜片100的平面上呈直线延伸。通过反射面11呈弧形曲线弯曲设置，以人眼01作为发射源，光线进入出光部10后到达其中一个反射面11，一部分光线经反射面11反射至下一个反射面11并可透过一个反射面11，最终光线透过多个反射面11后在传输部20会聚，经传输部20的第一弧形界面21后进一步会聚，以使得显示器件210可以进一步缩小体积。
在另一个实施例中，请参阅图6和图7，与图2所示实施例大致相同，不同的是，入光面31为曲面。入光面31朝背离出光部10的方向凸出。入光面31可以是在垂直光波导镜片100且平行长边130的平面上沿弧形曲线弯曲(如图6)，也可以是在平行光波导镜片100的平面上沿弧形曲线延伸(如图7)。可以理解的是，以人眼01作为发射源，光线传播路径从传输部20经过入光面31后折射，可形成进一步会聚的光线传播路径，可以进一步缩小显示器件210的体积。
进一步的，聚光部201还包括第二界面，所述第二界面在平行光波导镜片100的平面上呈朝向出光部10或朝向进光部30凸出。以人眼01作为发射源，光线由出光部10到第二界面，在第二界面处折射，并会聚至第一界面，并在第一界面处折射，以继续会聚，并最终可在靠近进光部30一侧会聚，以实现在维持视场角不变的情况下，可较大程度的缩小显示器件210仍然满足光波导镜片100的光线传导需求。
进一步地，请参阅图8和图9，在一实施例中，所述第一界面为第一弧形界面21，所述第二界面为第二弧形界面22，第二弧形界面22位于第一弧形界面21远离进光部30一侧，第二弧形界面22在平行光波导镜片100的平面上呈朝向进光部30凸出或呈朝向出光部10凸出的第二曲线延伸。
在一个实施例中，第二弧形界面22在平行光波导镜片100的平面上呈朝向进光部30凸出的第二曲线延伸。第二弧形界面22靠近进光部30一侧的折射率小于第二弧形界面22靠近出光部10一侧的折射率。以人眼01作为发射源，光线由出光部10到第二弧形界面22，在第二弧形界面22处折射，并会聚至第一弧形界面21，并在第一弧形界面21处折射，以继续会聚，并最终可在靠近进光部30一侧会聚，以实现在维持视场角不变的情况下，可较大程度的缩小显示器件210仍然满足光波导镜片100的光线传导需求。第一弧形界面21和第二弧形界面22可以分别靠近进光部30和出光部10，即通过调整第一弧形界面21和第二弧形界面22的距离，实现调节光线的会聚程度，方便调整显示器件210体积大小。在其他实施方式中，第二界面为具有聚光作用的连续折弯面，该连续折弯面可由多个依次呈夹角排列的平面构成。
进一步地，第一弧形界面21与进光部30之间形成第一导光部211，第一弧形界面21与第二弧形界面22之间形成第二导光部212。第二弧形界面22与出光部10之间形成第三导光部213。第一导光部211的折 射率不同于第二导光部212的折射率，第二导光部212的折射率不同于第三导光部213的折射率。
可以理解的是，第一导光部211的折射率可以是大于第二导光部212的折射率，也可以是小于第二导光部212的折射率。第二导光部212的折射率可以是大于第三导光部213的折射率。第一导光部211、第二导光部212及第三导光部213之间的折射率关系需要结合第一弧形界面21及第二弧形界面22的凸出或凹陷方向而定，以满足光线的传播路径依次由第二弧形界面22和第一弧形界面21折射后缩拢，使得显示器件210的尺寸变小。
在一个实施例中，请参阅图8，第一弧形界面21在平行光波导镜片100的平面上呈朝向出光部10凸出的第一曲线延伸，第二弧形界面22在平行光波导镜片100的平面上呈朝向进光部30凸出的第二曲线延伸。第一导光部211的折射率大于第二导光部212的折射率，第三导光部213的折射率大于第二导光部212的折射率，第三导光部213的折射率等于第一导光部211的折射率。可以理解的是，第三导光部213的折射率等于第一导光部211的折射率可以是折射率之差小于一定预设范围内，并不是限定于数值上的完全相等。当然，在其他实施例中，第一导光部211的折射率也可以是大于或小于第三导光部213的折射率。
在另一个实施例中，请参阅图10，与图8所示实施例大致相同，不同的是，第二弧形界面22在平行光波导镜片100的平面上呈朝向出光部10凸出的第二曲线延伸。第一导光部211的折射率大于第二导光部212的折射率，第二导光部212的折射率大于第三导光部213的折射率。以人眼作为发射源，出光部10的光线依次经第二弧形界面22和第一弧形界面21连续会聚，以使得显示器件210可进一步缩小体积，并满足视场角不变的需求。
请继续参阅图8和图9，可以理解的是，本申请的第一弧形界面21和第二弧形界面22可以在平行光波导镜片100的平面上可以是朝相同方向凸出，也可以是朝相反方向凸出。根据需要设置第一弧形界面21和第二弧形界面22不同形式的组合，以及根据需要结合第一导光部211的折射率、第二导光部212的折射率和第三导光部213的折射率设置不同的组合，以使得在将人眼作为发射源的情况下，光线经出光部10后经传输部20的聚光部201会聚，并在进光部30会聚传播至显示器件210，进而可设置较小体积的显示器件210。
进一步，第一弧形界面21在平行光波导镜片100的平面上呈朝向出光部10凸出的第一曲线a延伸。第二弧形界面22在平行光波导镜片100的平面上呈朝向进光部30凸出的第二曲线b延伸。第一曲线a的曲率半径的绝对值大于第二曲线b的曲率半径的绝对值。当然，在其他实施方式中，第一曲线a的曲率半径绝对值也可以小于第二曲线b的曲率半径的绝对值。
作为一种可实施的方式，第一弧形界面21和第二弧形界面22满足如下的弧面参数公式：
Figure PCTCN2019089689-appb-000001
其中，c为曲率半径，k为二次曲线系数，r为曲线上的点至原点距离，α 1、α 2、α 3、α 4、α 5、α 6、α 7、α 8依次为2、4、6、8、10、12、14、16阶非球面系数。
在另一个实施例中，请参阅图11，与图10示实施例大致相同，不同的是，第一弧形界面21还在垂直光波导镜片100且平行长边130的平面上呈曲线延伸。第一弧形界面21大致为“球面”。第一弧形界面21在垂直光波导镜片100且平行长边130的平面上可以呈朝向出光部10凸出的曲线延伸，也可以是呈朝向进光部30凸出的曲线延伸。第一导光部211的折射率大小和第二导光部212的折射率大小需要结合第一弧形界面21的延伸方向而定。通过第一弧形界面21在垂直光波导镜片100且平行长边130的平面上呈曲线延伸，以及根据需要设置第一导光部211的折射率、第二导光部212的折射率和第三导光部213的折射率以不同形式组合，在以人眼为发射源的情况下，使得光线经由出光部10经第一弧形界面21折射后，实现光线在靠近进光部30处于空间上多维度会聚。
在另一个实施例中，请参阅图12，与图11示实施例大致相同，不同的是，第二弧形界面22在垂直光波导镜片100且平行长边130的平面上呈曲线延伸。第二弧形界面22大致为“球面”。第二弧形界面22在垂直光波导镜片100且平行长边130的平面上可以呈朝向出光部10凸出的曲线延伸，也可以是呈朝向进光部30凸出的曲线延伸。第二导光部212的折射率大小和第三导光部213的折射率大小需要根据第二弧形界面22的延伸方向而定。通过第二弧形界面22在垂直光波导镜片100且平行长边130的平面上呈曲线延伸，以及根据需要设置第一导光部211的折射率、第二导光部212的折射率和第三导光部213的折射率以不同形式组合，实现光线在靠近进光部30处于空间上多维度的进一步会聚。进一步的， 聚光部201还包括第三界面，所述第三界面在平行光波导镜片100的平面上呈朝向出光部10或朝向进光部30凸出。以人眼01作为发射源，光线的传播路径依次经第二界面、第三界面和第一界面折射后，可朝向进光部30会聚传导，使得显示器件210的尺寸可变小。
进一步地，请参阅图13，在一实施例中，所述第一界面为第一弧形界面21，所述第二界面为第二弧形界面22，所述第三界面为第三弧形界面23。第一弧形界面21和第二弧形界面22之间设置第三弧形界面23，第三弧形界面23在平行光波导镜片100的平面上，呈朝向进光部30凸出或朝向出光部10凸出的第三曲线延伸。
本实施方式中，第三弧形界面23在垂直光波导镜片100且平行长边130的平面上可以是呈直线或曲线延伸。即第三弧形界面23可以是“非球形弧面”，也可以是“球形弧面”。根据需要设置第三弧形界面23的曲率半径，第三弧形界面23的曲率半径大小取决于光线在经第三弧形界面23的会聚程度。根据需要设置第一弧形界面21相对两侧的折射率大小，设置第二弧形界面22相对两侧的折射率大小，以及设置第三弧形界面23相对两侧的折射率大小，而第一弧形界面21相对两侧的折射率、第二弧形界面22相对两侧的折射率和第三弧形界面23相对两侧的折射率的关系需要结合第一弧形界面21、第二弧形界面22和第三弧形界面23的凸出或凹陷方向而定，以满足光线的传播路径依次经第二弧形界面22、第三弧形界面23和第一弧形界面21折射后，可朝向进光部30会聚传导，使得显示器件210的尺寸可变小。通过在第一弧形界面21和第二弧形界面22之间增加第三弧形界面23，并设置第一弧形界面21、第二弧形界面22和第三弧形界面23的弧面参数，可以调整光线在靠近进光部30的会聚程度，以调整显示器件210的尺寸大小。在其他实施方式中，第三界面为具有聚光作用的连续折弯面，该连续折弯面可由多个依次呈夹角排列的平面构成。
进一步地，请参阅图14，聚光部201在第一弧形界面21和第二弧形界面22之间设置多个依次排布的第三弧形界面23。多个第三弧形界面23的曲率半径可以相互不同。每一第三弧形界面23可以是朝进光部30凸出或朝向出光部10凸出。每一第三弧形界面23相对两侧的折射率大小也可以根据每一第三弧形界面23的延伸方向设置不同形式组合。每一第三弧形界面23满足上述弧面参数公式。通过在第一弧形界面21和第二弧形界面22之间设置多个第三弧形界面23，设置每一第三弧形界面23的弧面参数，以及设置每一第三弧形界面23相对两侧的折射率大小，以增加光线折射次数，实现聚光部201在靠近进光部20一侧光线会聚程度增加。
进一步地，第一表面101为平面或曲面，第二表面102为平面或曲面。
在一个实施例中，请继续参阅图10，第一表面101和第二表面102均为平面。第一表面101与第二表面102相平行。光线在第一表面101和第二表面102之间容易满足全反射条件，以保证光线经传输部20有效传导至出光部10，并且在出光部10可以获得有效输出显示图像的“显示平面”。
在另一个实施例中，请参阅图15，第一表面101和第二表面102均为曲面。第一表面101与第二表面102相平行。光线经传输部20改变传播路径，并在出光部10可有效输出显示图像的“显示曲面”，以形成类似“曲面显示屏”结构，增加用户体验性能。
在另一个实施例中，请参阅图16，第一表面101和第二表面102均为曲面。第一表面101与第二表面102非平行设置。第一表面101与第二表面102可朝相同方向凸出，或朝相反方向凸出，以使得光波导镜片100可形成“凸透镜”或“凹透镜”结构，并且第一表面101的曲率半径小于或大于第二表面102的曲率半径，以使得光波导镜片100方便光波导镜片100可满足于近视眼用户或远视眼用户需求。
请参阅图17，本申请还提供一种近眼显示装置200，近眼显示装置200包括光波导镜片100，近眼显示装置200还包括显示器件210，显示器件210靠近进光部30，并朝向进光部30发射显示光线。
本实施方式中，显示器件210为微显示器。显示器件210可发出光线束，以形成图像。显示器件210发出的光线束从进光部30进入光波导镜片100。以人眼01为发射源，显示器件210可以位于经第二弧形界面22和第一弧形界面21连续会聚的光线传播路径上，实现在平行第一短边110的宽度尺寸可减小。实现了减小显示器件210的体积情况下，可维持视场角不变，使得近眼显示装置200轻薄化，提高了用户体验。
在一个实施例中，显示器件210抵触于进光部30的入光面31。第一弧形界面21的聚集点位于显示器件210上。通过设置第一弧形界面21的曲率，以使第一弧形界面21焦点位于显示器210的显示面上，节省 掉了在进光部30和显示器件210之间设置准直器件或具有准直功能的光学引擎器件，实现了近眼显示装置200的结构简单，体积较小，具有较大视场角的性能。
在另一个实施例中，请参阅图18，与图17示实施例大致相同，不同的是，显示器件210与入光面31存在间距。入光面31为曲面。设置入光面31的聚焦点位于显示器件210的显示面上，节省掉了在进光部30和显示器件210之间设置准直器件或具有准直功能的光学引擎器件，实现了近眼显示装置200的结构简单的性能。
在另一个实施例中，请参阅图19，近眼显示装置200还包括光学引擎220，光学引擎220位于显示器件210和进光部30之间，以将显示器件210的显示光线耦合至进光部30。光学引擎220可将显示器件210的光线束进行准直耦合输出至进光部30，使得进光部30可以获得清晰的光线图像。由于光波导镜片100具有会聚光传导路径的性能，从而使得显示器件210和光学引擎220可以设置较小的体积，实现近眼显示装置200的轻薄化，且具有较大视场角，提高用户体验。
以上对本申请实施例所提供的一种光波导镜片及近眼显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施例进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施例及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种光波导镜片，其特征在于，所述光波导镜片包括出光部、传输部和进光部，所述传输部连接于所述出光部和所述进光部之间，所述进光部用以供光线进入，所述出光部用以供光线出射，所述传输部设有聚光部，用于将进入的光线会聚。
  2. 如权利要求1所述的光波导镜片，其特征在于，所述出光部包括多个平行排列的反射面，所述聚光部会聚的光线经由各反射面反射之后出射。
  3. 如权利要求2所述的光波导镜片，其特征在于，光线在达到其中一个反射面之后，一部分被该反射面反射，另一部分透过该反射面到达下一个反射面。
  4. 如权利要求3所述的光波导镜片，其特征在于，所述聚光部包括第一界面，所述第一界面在平行所述光波导镜片的平面上呈朝向所述出光部或朝向所述进光部凸出。
  5. 如权利要求4所述的光波导镜片，其特征在于，所述第一界面在垂直所述光波导镜片，且平行所述进光部与所述出光部相对方向的平面上，呈直线或曲线延伸。
  6. 如权利要求4所述的光波导镜片，其特征在于，所述聚光部包括第二界面，所述第二界面位于所述第一界面远离所述进光部一侧，所述第二界面在平行所述光波导镜片的平面上呈朝向所述进光部凸出或朝向所述出光部凸出。
  7. 如权利要求6所述的光波导镜片，其特征在于，所述第二界面在垂直所述光波导镜片，且平行所述进光部与所述出光部相对方向的平面上，呈直线或曲线延伸。
  8. 如权利要求7所述的光波导镜片，其特征在于，所述第二界面在垂直所述光波导镜片，且平行所述进光部与所述出光部相对方向的平面上，呈朝出光部凸出或朝进光部凸出的曲线延伸。
  9. 如权利要求6所述的光波导镜片，其特征在于，所述第一界面与所述进光部之间形成第一导光部，所述第一界面与所述第二界面之间形成第二导光部，所述第二界面与所述出光部之间形成第三导光部，所述第一导光部的折射率不同于所述第二导光部的折射率，所述第二导光部的折射率不同于所述第三导光部的折射率。
  10. 如权利要求9所述的光波导镜片，其特征在于，所述第一导光部的折射率大于所述第二导光部的折射率，所述第三导光部的折射率大于所述第二导光部的折射率。
  11. 如权利要求9所述的光波导镜片，其特征在于，所述第一导光部的折射率等于所述第二导光部的折射率。
  12. 如权利要求6所述的光波导镜片，其特征在于，所述聚光部包括设置在所述第一界面和所述第二界面之间的第三界面，所述第三界面在平行所述光波导镜片的平面上，呈朝向所述进光部凸出或朝向所述出光部凸出。
  13. 如权利要求12所述的光波导镜片，其特征在于，所述聚光部包括设置在所述第一界面和所述第二界面之间的多个依次排布的所述第三界面。
  14. 如权利要求1～13任意一项所述的光波导镜片，其特征在于，所述进光部包括入光面，所述入光面为平面或曲面。
  15. 如权利要求1～13任意一项所述的光波导镜片，其特征在于，所述光波导镜片具有第一表面和第二表面，所述聚光部形成于所述第一表面和所述第二表面之间，所述第一表面为平面或曲面，所述第二表面为平面或曲面。
  16. 如权利要求15所述的光波导镜片，其特征在于，所述第一表面平行所述第二表面。
  17. 如权利要求15所述的光波导镜片，其特征在于，所述第一表面的曲率半径小于或大于所述第二表面的曲率半径。
  18. 一种近眼显示装置，其特征在于，所述近眼显示装置包括权利要求1～17任意一项所述光波导镜片，所述近眼显示装置还包括显示器件，所述显示器件靠近所述进光部，并朝向所述进光部发射显示光线。
  19. 如权利要求18所述的近眼显示装置，其特征在于，所述显示器件抵触于所述进光部，所述聚光部的聚集点位于所述显示器件上。
  20. 如权利要求18所述的近眼显示装置，其特征在于，所述近眼显示装置还包括光学引擎，所述光学引擎位于所述显示器件和所述进光部之间，以将所述显示器件的显示光线耦合至所述进光部。
PCT/CN2019/089689 2019-05-31 2019-05-31 光波导镜片及近眼显示装置 Ceased WO2020237684A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980079835.1A CN113330349A (zh) 2019-05-31 2019-05-31 光波导镜片及近眼显示装置
PCT/CN2019/089689 WO2020237684A1 (zh) 2019-05-31 2019-05-31 光波导镜片及近眼显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/089689 WO2020237684A1 (zh) 2019-05-31 2019-05-31 光波导镜片及近眼显示装置

Publications (1)

Publication Number Publication Date
WO2020237684A1 true WO2020237684A1 (zh) 2020-12-03

Family

ID=73552493

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/089689 Ceased WO2020237684A1 (zh) 2019-05-31 2019-05-31 光波导镜片及近眼显示装置

Country Status (2)

Country Link
CN (1) CN113330349A (zh)
WO (1) WO2020237684A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023107273A1 (en) * 2021-12-10 2023-06-15 Google Llc Optical waveguide with integrated optical elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104698588A (zh) * 2013-12-06 2015-06-10 精工爱普生株式会社 虚像显示装置
CN205787364U (zh) * 2016-03-23 2016-12-07 北京三星通信技术研究有限公司 近眼显示设备
CN107290816A (zh) * 2016-03-30 2017-10-24 中强光电股份有限公司 光波导元件以及具有此光波导元件的头戴式显示装置
CN107797287A (zh) * 2017-11-28 2018-03-13 苏州苏大维格光电科技股份有限公司 光波导镜片及显示装置
EP3407112A1 (en) * 2017-05-26 2018-11-28 Qioptiq Limited Distributed aperture head-up display (hud)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8064744B2 (en) * 2006-11-10 2011-11-22 Rpo Pty Limited Planar waveguide lens design
US9606354B2 (en) * 2014-07-17 2017-03-28 Google Inc. Heads-up display with integrated display and imaging system
KR102578724B1 (ko) * 2017-11-06 2023-09-13 엘지디스플레이 주식회사 표시장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104698588A (zh) * 2013-12-06 2015-06-10 精工爱普生株式会社 虚像显示装置
CN205787364U (zh) * 2016-03-23 2016-12-07 北京三星通信技术研究有限公司 近眼显示设备
CN107290816A (zh) * 2016-03-30 2017-10-24 中强光电股份有限公司 光波导元件以及具有此光波导元件的头戴式显示装置
EP3407112A1 (en) * 2017-05-26 2018-11-28 Qioptiq Limited Distributed aperture head-up display (hud)
CN107797287A (zh) * 2017-11-28 2018-03-13 苏州苏大维格光电科技股份有限公司 光波导镜片及显示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023107273A1 (en) * 2021-12-10 2023-06-15 Google Llc Optical waveguide with integrated optical elements

Also Published As

Publication number Publication date
CN113330349A (zh) 2021-08-31

Similar Documents

Publication Publication Date Title
EP3190447B1 (en) Light guide and virtual image display device
CN104536138B (zh) 带有锯齿夹层结构的平面波导双目光学显示器件
CN104536088B (zh) 齿形镶嵌平面波导光学器件
KR102777529B1 (ko) 고스트 이미지를 완화하기 위한 광학 디바이스
CN111448505B (zh) 具有偏振波导的近眼系统
WO2023097762A1 (zh) 光学系统及头戴显示设备
CN113433613B (zh) 波导组件、光学装置及智能眼镜
JP2019522811A (ja) 光変換のためのウェッジ
US12276794B2 (en) Optical device for augmented reality having improved light efficiency
CN112782852B (zh) 近眼光学系统
CN108732767A (zh) 一种紧凑型自由曲面波导近眼显示光学装置
CN104597565A (zh) 增强现实的齿形镶嵌平面波导光学器件
US20210103098A1 (en) Optical connector with tilted mirror
WO2022012068A1 (zh) 一种视场角的调整方法及近眼显示设备
TW202210902A (zh) 光學裝置
TWI800711B (zh) 微型頭戴顯示器之光學系統
WO2020237684A1 (zh) 光波导镜片及近眼显示装置
CN104597603B (zh) 平面锯齿夹层结构的目视光学显示器件
WO2023123920A1 (zh) 光传输结构和头戴显示设备
US20240177432A1 (en) Optical device for augmented reality having ghost image prevention function
CN208569195U (zh) 一种紧凑型自由曲面波导近眼显示光学装置
CN219936206U (zh) 一种阵列波导系统及近眼显示设备
JP2022020912A (ja) 導光部材および表示装置
CN217820949U (zh) 导光结构及三维显示装置
US12111470B2 (en) Optical system and mixed reality device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19930282

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19930282

Country of ref document: EP

Kind code of ref document: A1