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    Optical Systems for Providing Polarized Light to a Waveguide
    22.
    发明公开
    Optical Systems for Providing Polarized Light to a Waveguide 审中-公开

    公开(公告)号：US20230333302A1

    公开(公告)日：2023-10-19

    申请号：US18188322

    申请日：2023-03-22

    Applicant: Apple Inc.

    Inventor： Vikrant Bhakta ,  Guolin Peng ,  Hyungryul Choi ,  Scott M. DeLapp

    IPC: F21V8/00 ,  G02B27/28 ,  G02B5/30 ,  G02B5/32

    CPC classification number: G02B6/0016 ,  G02B27/283 ,  G02B5/3083 ,  G02B6/0031 ,  G02B6/0035 ,  G02B5/32

    Abstract: A display may include a waveguide for providing light to an eye box. The display may include polarization recycling structures having a polarizing beam splitter and a prism. The polarizing beam splitter may transmit a first portion of unpolarized light as first image light having a first polarization and may reflect a second portion of the unpolarized light as second image light having a second polarization. One or more waveplates may be mounted to the prism for transmitting the second image light. Upon transmission by the waveplate(s), the second image light may have the same polarization as the first image light. An input coupler may couple the first and second image light into the waveguide. Providing polarized light to the waveguide may maximize the optical efficiency of the waveguide. The polarization recycling structures may maximize the amount of the image light that is coupled into the waveguide.

    Optical Systems Having Multiple Light Paths for Performing Foveation
    23.
    发明申请
    Optical Systems Having Multiple Light Paths for Performing Foveation 有权

    公开(公告)号：US20220004009A1

    公开(公告)日：2022-01-06

    申请号：US17479322

    申请日：2021-09-20

    Applicant: Apple Inc.

    Inventor： Graham B. Myhre ,  Guolin Peng ,  Hyungryul Choi ,  Scott M. DeLapp ,  Vikrant Bhakta

    IPC: G02B27/01 ,  G02B27/00

    Abstract: An electronic device may include a display module that produces foveated images having high and low resolution regions. The module may include a reflective display panel that produces first reflected light during first time periods and second reflected light during second time periods. The first reflected light may reflect off of a beam splitter to form the low resolution region of the foveated image. The second reflected light may be transmitted by the beam splitter, de-magnified by a lens, and redirected by an optical steering element to produce the high resolution region at a desired, adjustable, location in the foveated image. The reflective display panel may be replaced by sets of emissive display panels that concurrently display the high and low resolution regions in the foveated image. The sets of emissive display panels may be replaced by front-lit reflective display panels.

    Optical systems for electronic devices with displays
    24.
    发明授权
    Optical systems for electronic devices with displays 有权

    公开(公告)号：US11009707B2

    公开(公告)日：2021-05-18

    申请号：US16610841

    申请日：2018-05-11

    Applicant: Apple Inc.

    Inventor： Guolin Peng ,  Hyungryul Choi ,  Scott M. DeLapp ,  Tyler G. Anderson

    IPC: G02B27/01 ,  F21V8/00

    Abstract: An electronic device may have a pixel array. A light source may illuminate the pixel array to produce image light. The image light may pass through a multi-element lens and may be coupled into a waveguide using an input coupler such as a prism. An output coupler such as a diffraction grating may couple the image light out of the waveguide and towards a user. The user may view the image light and may observe real-world objects through the waveguide. The waveguide may have locally modified portions that define an aperture stop at a distance from an exit surface of the multi-element lens. The multi-element lens may have first and second achromatic doublets and first and second singlets between the first and second achromatic doublets. The lens elements of the multi-element lens may include lens elements with aspheric surfaces.

    Display Illumination Systems
    25.
    发明申请
    Display Illumination Systems 审中-公开

    公开(公告)号：US20200057308A1

    公开(公告)日：2020-02-20

    申请号：US16609066

    申请日：2018-06-05

    Applicant: Apple Inc.

    Inventor： Hyungryul Choi ,  Eric J Hansotte ,  Guolin Peng ,  Paul J. Gelsinger-Austin ,  Se Baek Oh

    IPC: G02B27/01 ,  F21V8/00 ,  G02B5/32 ,  G03H1/02

    Abstract: An electronic device may have a reflective display with a pixel array that generates images. The reflective display may be illuminated by an illumination system. Light from the illumination system may be reflected by the pixel array as image light. The image light may be provided to a viewer using a waveguide with diffractive input and output couplers. The illumination system may have a waveguide. The illumination system may also have a light source such as one or more light-emitting diodes. Light from the light source may be coupled into the waveguide of the illumination system by a diffractive coupler such as volume hologram that serves as an input coupler. Light from the light source may be routed to the display to illuminate the display using the waveguide in the illumination system and a diffractive coupler such as a volume hologram that serves as an output coupler.

    Optical Systems For Directing Display Module Light into Waveguides
    28.
    发明公开
    Optical Systems For Directing Display Module Light into Waveguides 审中-公开

    公开(公告)号：US20240184117A1

    公开(公告)日：2024-06-06

    申请号：US18440812

    申请日：2024-02-13

    Applicant: Apple Inc.

    Inventor： Scott M. DeLapp ,  Vikrant Bhakta ,  Di Hu ,  Guolin Peng ,  Darshan R Kasar ,  John Raff

    IPC: G02B27/01 ,  G02B6/34

    CPC classification number: G02B27/0172 ,  G02B6/34 ,  G02B2027/0174

    Abstract: A display system may include a waveguide, an input coupler with a first surface relief grating (SRG), and an output coupler with a second SRG. A display module may produce image light that is coupled into the waveguide by the first SRG. The first SRG may have an input vector non-parallel with respect to a normal axis of the waveguide. The display module may have an optical axis tilted with respect to the input vector by a non-zero angle. A prism may redirect the image light from the module to the first SRG in a direction parallel to the input vector. The module may include lens elements with an optical axis offset with respect to the center of the field of the image light. This may cause the lens elements to output the image light in a direction parallel to the input vector of the first SRG.

    Lens Assembly Including Wave Plate
    29.
    发明公开
    Lens Assembly Including Wave Plate 审中-公开

    公开(公告)号：US20240045128A1

    公开(公告)日：2024-02-08

    申请号：US18328290

    申请日：2023-06-02

    Applicant: Apple Inc.

    Inventor： Guolin Peng ,  Elson Y Liu ,  Yuan Chen ,  Khoa Nguyen ,  Kaikai Guo ,  Zhibing Ge ,  Seung Hoon Lee ,  Se Hyun Ahn

    IPC: G02B5/30 ,  G02B17/08 ,  G06F1/16

    CPC classification number: G02B5/3083 ,  G02B17/08 ,  G06F1/163

    Abstract: An electronic device may include a display panel configured to produce light and a lens assembly that receives the light from the display panel. The lens assembly may include a first lens and a second lens. The second lens may be a removable lens that is configured to be selectively attached to the lens assembly. The lens assembly may also include a partially reflective mirror that is interposed between the first lens and the display panel, a reflective polarizer that is interposed between the first lens and the second lens when the second lens is attached to the lens assembly, and a quarter wave plate that is interposed between the reflective polarizer and the second lens when the second lens element is attached to the lens assembly.

    Optical systems with resolution-enhancing spectral shifting
    30.
    发明授权
    Optical systems with resolution-enhancing spectral shifting 有权

    公开(公告)号：US11852816B1

    公开(公告)日：2023-12-26

    申请号：US17373210

    申请日：2021-07-12

    Applicant: Apple Inc.

    Inventor： Scott M. DeLapp ,  Guolin Peng ,  Hyungryul Choi ,  Vikrant Bhakta

    IPC: G02B27/01 ,  G02B6/34 ,  F21V8/00

    CPC classification number: G02B27/0172 ,  G02B6/0016 ,  G02B6/0026 ,  G02B6/0031 ,  G02B6/34 ,  G02B2027/0147 ,  G02B2027/0174 ,  G02B2027/0178

    Abstract: The display may include a display module and a waveguide. The module may produce first light of first wavelengths during first time periods and may produce second light of second wavelengths during second time periods interleaved with the first time periods. Diffractive gratings or a dichroic wedge may redirect the first light into the waveguide at a first angle and may redirect the second light into the waveguide at a second angle separated from the first angle by a separation angle. The separation angle may be equal to half the angle subtended by the projection of a pixel in the module. The first and second time periods may alternate faster than the response of the human eye. This may configure the first and second image light to collectively provide images at an eye box with an increased effective resolution without increasing the space or power consumed by the display module.

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