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公开(公告)号：US12112715B2
公开(公告)日：2024-10-08
申请号：US18353622
申请日：2023-07-17
申请人： Apple Inc.
CPC分类号： G09G3/346 , G02B26/0833 , G09G2320/0233 , G09G2320/0626 , G09G2330/021 , G09G2370/00
摘要： A device may include an electronic display to display image frames. The display may include illuminators that generate light and mirrors that selectively direct the light to pixel locations based bitplanes that set the arrangement of the mirrors. Additionally, the device may include duty cycle balancing circuitry that generates and provides duty cycle balancing signals to the electronic display. In response to the duty cycle balancing signals, the electronic display is implements balancing on bitplanes during at least a first portion of off periods during the image frames and implements balancing off bitplanes during at least a second portion of the off periods such that, in the aggregate, a ratio of respective on times of the mirrors to respective off times of the mirrors is balanced across the image frames during the off periods.
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公开(公告)号：US20240096294A1
公开(公告)日：2024-03-21
申请号：US18353622
申请日：2023-07-17
申请人： Apple Inc.
CPC分类号： G09G3/346 , G02B26/0833 , G09G2320/0233 , G09G2320/0626 , G09G2330/021 , G09G2370/00
摘要： A device may include an electronic display to display image frames. The display may include illuminators that generate light and mirrors that selectively direct the light to pixel locations based bitplanes that set the arrangement of the mirrors. Additionally, the device may include duty cycle balancing circuitry that generates and provides duty cycle balancing signals to the electronic display. In response to the duty cycle balancing signals, the electronic display is implements balancing on bitplanes during at least a first portion of off periods during the image frames and implements balancing off bitplanes during at least a second portion of the off periods such that, in the aggregate, a ratio of respective on times of the mirrors to respective off times of the mirrors is balanced across the image frames during the off periods.
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公开(公告)号：US20240184116A1
公开(公告)日：2024-06-06
申请号：US18440534
申请日：2024-02-13
申请人： Apple Inc.
IPC分类号： G02B27/01
CPC分类号： G02B27/0172 , G02B2027/0118
摘要： An electronic device may have a display system with a module that produces image light and a waveguide that directs the image light towards an eye box. The module may include a light source, spatial light modulator, and collimating lens between the lens and modulator. The lens may direct illumination from the light source to the modulator, which modulates the illumination to produce the image light. The lens may have a geometry that illuminates the modulator with a non-uniform illumination pattern to mitigate subsequent brightness non-uniformity introduced by the waveguide. The light source may include one or more LEDs that are independently driven by control circuitry over one or more drive lines to help mitigate the non-uniformity introduced by the waveguide and/or to operate the display in a heads-up display mode.
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