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公开(公告)号：US20240353684A1
公开(公告)日：2024-10-24
申请号：US18756771
申请日：2024-06-27
Applicant: Apple Inc.
Inventor： Runyu Zhang , Vikrant Bhakta , Hyungryul Choi , Cameron A. Harder , Xiaonan Wen , Zhenbin Ge , Xianwei Zhao
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B2027/0118 , G02B2027/0174
Abstract: A display system may include a waveguide with an output coupler that couples image light out of the waveguide and towards an eye box. The output coupler may also transmit world light from real-world objects towards the eye box. A bias lens may pass the world light to the output coupler. An adjustable tint layer having multiple states that involve transmission of different amounts of the world light may be disposed between the bias lens and the output coupler. Different states may impart different colors and/or may impart a gradient transmission characteristic to the world light. The bias lens itself may form the adjustable tint layer. The adjustable tint layer may have a transparent electrode layer that is provided with one or more AC voltages that heat the adjustable tint layer. The adjustable tint layer may be a self-switching electrochromic device that includes a transparent solar cell.
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公开(公告)号：US12111467B2
公开(公告)日：2024-10-08
申请号：US16409681
申请日：2019-05-10
Applicant: Apple Inc.
Inventor： Vikrant Bhakta , Hyungryul Choi , Guolin Peng , Scott M. DeLapp
CPC classification number: G02B27/0172 , G02B3/0037 , G02B27/1026 , G02B27/126 , G02B27/30 , G02B2027/0114 , G02B2027/013
Abstract: An electronic device may have a spatial light modulator. Control circuitry in the electronic device may use the spatial light modulator to generate images. A light source may be used to produce illumination for the spatial light modulator. An optical system may direct the illumination onto the spatial light modulator and may direct corresponding reflected image light towards eye boxes for viewing by a user. Head-mounted support structures may be used to support the spatial light modulator, light source, and optical system. The light source may include light-emitting elements such as light-emitting diodes or lasers. Multiple light-emitting elements may be provided in the light source in a one-dimensional or two-dimensional array. During operation, the control circuitry can individually adjust the light-emitting elements.
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公开(公告)号：US11852819B2
公开(公告)日：2023-12-26
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
CPC classification number: G02B27/0172 , G02B27/0093 , G02B27/283 , G02B27/1066 , G02B2027/014 , G02B2027/0138 , G02B2027/0147
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.
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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.
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公开(公告)号：US11994681B2
公开(公告)日：2024-05-28
申请号：US17477321
申请日：2021-09-16
Applicant: Apple Inc.
Inventor： Vikrant Bhakta , Guolin Peng , Hyungryul Choi , Kevin A. Keilbach , Scott M. DeLapp
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.
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Patent Agency Ranking
公开(公告)号：US20220011496A1
公开(公告)日：2022-01-13
申请号：US17482149
申请日：2021-09-22
Applicant: Apple Inc.
Inventor： Vikrant Bhakta , Scott M. DeLapp , Jonathan B. Pfeiffer , Hyungryul Choi , Guolin Peng
Abstract: An electronic device may include a waveguide with an input coupler and an output coupler. The input coupler may receive the image light from imaging optics. The input coupler may be an input coupling prism and the imaging optics may include lens elements. World light may be viewable at an eye box through the output coupler. Biasing, compensation, and/or prescription lenses may overlap the output coupler. The input coupling prism, the lens elements in the imaging optics, and/or one or more of the biasing, compensation, and prescription lenses may be formed from gradient index (GRIN) material. The GRIN material may have a gradient refractive index that varies in one or more gradient directions. Use of GRIN materials may minimize the volume required to form the device without sacrificing optical performance. In addition, the GRIN materials may compensate for dispersion and aberrations in the device.
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公开(公告)号：US20220004008A1
公开(公告)日：2022-01-06
申请号：US17477408
申请日：2021-09-16
Applicant: Apple Inc.
Inventor： Hyungryul Choi , Guolin Peng , Scott M. DeLapp , Vikrant Bhakta
IPC: G02B27/01
Abstract: An electronic device may have an optical combiner, a spatial light modulator, and illumination optics. The modulator may produce image light for the combiner by modulating illumination light from the illumination optics. Adjustable optical components in the illumination optics may be controlled to adjust the illumination optics between first and second states. In the first state, the adjustable optical components may provide the illumination light to the modulator with a uniform intensity across the lateral area of the modulator. In the second state, the adjustable optical components may focus the illumination light within a subset of the lateral area. The subset of the lateral area may correspond with a bright object in the image light. The control circuitry may control the illumination optics to ensure that the bright object remains visible at an eye box even when the device is located in bright ambient lighting conditions.
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公开(公告)号：US20220004007A1
公开(公告)日：2022-01-06
申请号：US17477321
申请日：2021-09-16
Applicant: Apple Inc.
Inventor： Vikrant Bhakta , Guolin Peng , Hyungryul Choi , Kevin A. Keilbach , Scott M. DeLapp
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.
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公开(公告)号：US12298505B2
公开(公告)日：2025-05-13
申请号：US17161469
申请日：2021-01-28
Applicant: Apple Inc.
Inventor： Vikrant Bhakta , Byron R. Cocilovo , Guolin Peng , Hyungryul Choi , Scott M. DeLapp , Se Baek Oh
Abstract: An electronic device may include an emissive display panel that emits light. The light may propagate along an optical path extending to an eye box. A waveguide with an input coupler and an output coupler may be interposed on the optical path. An angle-selective transmission filter (ASTF) may be interposed on the optical path and may filter the emitted light as a function of angle to remove high-angle light from the optical path before the light is provided to the output coupler. The ASTF may include diffractive grating structures such as thin-film holograms, volume holograms, or surface relief gratings, louvered mirrors, multi-layer coatings, or a pinhole array. This ASTF may serve to minimize stray light within the display, thereby optimizing the contrast and the modulation transfer function (MTF) of the display.
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公开(公告)号：US12085724B1
公开(公告)日：2024-09-10
申请号：US18326400
申请日：2023-05-31
Applicant: Apple Inc.
Inventor： Scott M DeLapp , Hyungryul Choi , Vikrant Bhakta
CPC classification number: G02B27/0176 , G02B6/102 , G02B27/0172 , G02B2027/011 , G02B2027/0178
Abstract: A head-mounted device may have projector, a first waveguide, a second waveguide, and an optical bridge sensor coupled between the first and second waveguides. An input coupler may couple light with a calibration pattern into the first waveguide. The calibration pattern may be included in visible or infrared light produced by the projector or may be included in infrared light produced by infrared emitters mounted to the first waveguide. An output coupler may couple the light having the calibration pattern out of the first waveguide. An additional output coupler may be used to couple visible light from the projector out of the waveguide and towards an eye box. An image sensor may generate image sensor data based on the light having the calibration pattern. Control circuitry may process the calibration pattern in the image sensor data to detect deformation or warping of the first waveguide.
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