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    Optical Systems Having Light Sources with Power Saving Modes
    3.
    发明公开
    Optical Systems Having Light Sources with Power Saving Modes 审中-公开

    公开(公告)号：US20230341690A1

    公开(公告)日：2023-10-26

    申请号：US18156309

    申请日：2023-01-18

    Applicant: Apple Inc.

    Inventor： Vikrant Bhakta ,  Guolin Peng ,  Hyungryul Choi ,  Jose A. Dominguez-Caballero

    IPC: G02B27/01

    CPC classification number: G02B27/0172 ,  G02B2027/0114 ,  G02B2027/0118 ,  G02B2027/0174

    Abstract: A display may include illumination optics, a spatial modulator, and a waveguide. The illumination optics may produce illumination that is modulated by the spatial modulator to produce image light. The waveguide may direct the image light towards an eye box. The illumination optics may include light source sets that produce the illumination. Each set may include a low power light source and a high power light source. In a first state, the high and low power light sources may be active. In a second state, the low power light sources may be active. Control circuitry may adjust between the first and second states based on image data. The second state may be used when virtual objects in the image data are confined to a peripheral region of the field of view of the eye box.

    Display illumination systems
    4.
    发明授权
    Display illumination systems 有权

    公开(公告)号：US11442271B2

    公开(公告)日：2022-09-13

    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 ,  G02B5/32 ,  F21V8/00 ,  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.

    Waveguided Display Systems
    5.
    发明申请
    Waveguided Display Systems 审中-公开

    公开(公告)号：US20200089014A1

    公开(公告)日：2020-03-19

    申请号：US16546157

    申请日：2019-08-20

    Applicant: Apple Inc.

    Inventor： Guolin Peng ,  Eric J. Hansotte ,  Francesco Aieta ,  Graham B. Myhre ,  Hyungryul Choi ,  Nan Zhu ,  Paul J. Gelsinger-Austin ,  Se Baek Oh ,  Scott M. DeLapp ,  Bradley C. Steele

    IPC: G02B27/14 ,  G02B27/12 ,  G02B27/01

    Abstract: An electronic device may have a display that emits image light, a waveguide, and an input coupler that couples the image light into the waveguide. Beam splitter structures may be embedded within the waveguide. The beam splitter structures may partially reflect the image light multiple times and may serve to generate replicated beams of light that are coupled out of the waveguide by an output coupler. The beam splitter structures may replicate the beams across two dimensions to provide an eye box with uniform-intensity light from the display across its area. The beam splitter structures may include stacked partially reflective beam splitter layers, sandwiched transparent substrate layers having different indices of refraction, a thick volume hologram interposed between substrate layers, or combinations of these or other structures. The reflectivity of the beam splitter structures may vary discretely or continuously across the lateral area of the waveguide.

    Optical Systems with Reflective Prism Input Couplers
    6.
    发明公开
    Optical Systems with Reflective Prism Input Couplers 审中-公开

    公开(公告)号：US20240272438A1

    公开(公告)日：2024-08-15

    申请号：US18641244

    申请日：2024-04-19

    Applicant: Apple Inc.

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

    IPC: G02B27/01

    CPC classification number: G02B27/0172 ,  G02B6/0016 ,  G02B6/003 ,  G02B2027/0123 ,  G02B2027/0147 ,  G02B2027/0163

    Abstract: An electronic device may include a display module that generates light and an optical system that redirects the light towards an eye box. The system may include an input coupler on a waveguide and a lens that directs the light towards the input coupler. The input coupler may include a prism having a reflective surface that reflects the light into the waveguide. The reflective surface may be curved to provide the light with an optical power. The prism may be configured to expand a field of view of the light. A birefringent beam displacer may expand the effective pupil size of the light. The lens may include lens elements that converge the light at a location between the lens elements and the waveguide. A switchable panel may be placed at the location and toggled between first and second orientations to increase the effective resolution of the light.

    Optical Systems Having Compact Display Modules
    8.
    发明公开
    Optical Systems Having Compact Display Modules 审中-公开

    公开(公告)号：US20240103272A1

    公开(公告)日：2024-03-28

    申请号：US18254351

    申请日：2021-11-24

    Applicant: Apple Inc.

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

    IPC: G02B27/01

    CPC classification number: G02B27/0172

    Abstract: A display may include illumination optics (36), a spatial modulator (40) and a waveguide (26). The illumination optics may produce illumination that is modulated by the spatial modulator to produce image light. The waveguide may direct the image light towards an eye box. The illumination optics may include light sources (58) an X-plate (44), and at least one Fresnel lens (60) interposed between the light sources and the X-plate. The Fresnel lenses may minimize the size of the illumination optics while still exhibiting satisfactory optical performance. The spatial light modulator may include a reflective display panel (50) and a powered prism (48) with a reflective coating on a curved reflective surface. The powered prism may optimize f-number while minimizing the volume of the spatial light modulator. The collimating optics may include a diffractive optical element (56) that compensates for thermal effects and chromatic dispersion in the display.

    Head-mounted display system
    9.
    发明授权
    Head-mounted display system 有权

    公开(公告)号：US11822078B2

    公开(公告)日：2023-11-21

    申请号：US16488806

    申请日：2018-02-28

    Applicant: Apple Inc.

    Inventor： Hyungryul Choi ,  Eric J. Hansotte ,  Guolin Peng

    IPC: G02B27/01 ,  G02B27/28 ,  G02B5/32 ,  F21V8/00

    CPC classification number: G02B27/0172 ,  G02B5/32 ,  G02B6/005 ,  G02B6/0023 ,  G02B6/0076 ,  G02B27/281 ,  G02B2027/014 ,  G02B2027/0174

    Abstract: An electronic device such as a head-mounted display may have a display system that produces images. The display system may have one or more pixel arrays (26-1, 26-2) such as liquid-crystal-on-silicon pixel arrays. Images from the display system may be coupled into a waveguide (116) by an input coupler system (114X, 114Y) and may be coupled out of the waveguide in multiple image planes using an output coupler system (120X, 120Y). The input and output coupler systems may include single couplers, stacks of couplers, and tiled arrays of couplers. Multiplexing techniques such as wavelength multiplexing, polarization multiplexing, time-division multiplexing, multiplexing with image light having different ranges of angular orientations, and/or tunable lens techniques may be used to present images to a user in multiple image planes.

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