公开(公告)号：US20240118468A1

公开(公告)日：2024-04-11

申请号：US17961451

申请日：2022-10-06

Applicant: Microsoft Technology Licensing, LLC

Inventor： Yifei ZHANG ,  Yarn Chee POON ,  Mathew David WATSON

IPC: G02B5/20 ,  G02B5/18

CPC classification number: G02B5/208 ,  G02B5/1809 ,  G02B5/201

Abstract: A rainbow artifact mitigation system includes an angular dependent filter configured to receive light and to transmit light according to one or more angular transmission functions. The one or more angular transmission functions define light transmission as a function of incident angle for the angular dependent filter, The angular dependent filter is configured to at least partially mitigate transmission of light for at least some incident angles above 40°. The angular dependent filter comprises a plurality of nanostructures, and the nanostructures of the plurality of nanostructures are arranged in an array with one or more sub-wavelength periods. The one or more angular transmission functions comprise at least two different angular transmission functions for different regions of the angular dependent filter.

公开(公告)号：US20240402493A1

公开(公告)日：2024-12-05

申请号：US18326484

申请日：2023-05-31

Applicant: Microsoft Technology Licensing, LLC

Inventor： Yarn Chee POON ,  Mark T. BOLAS ,  Ishan CHATTERJEE ,  Bernard C. KRESS ,  Yifei ZHANG

IPC: G02B27/01

Abstract: Optical filters are disclosed for reducing leakage of light used for virtual images from a mixed-reality head-mounted display (HMD) device having a waveguide combiner. The optical filters include spectral-sensitive wideband and narrowband reflectors comprising triple-notch filters or single-notch filters that reflect forward-propagating virtual image light back to a user's eyes. The optical filters further include light deflectors having planar and curved configurations comprising volume Bragg gratings (VBGs), liquid crystal Bragg gratings, and partially-reflective mirror arrays. A light deflector steers forward-propagating virtual image light to impart an angular change in propagation direction. The steered light is absorbed and/or diffused by structures in the HMD device and/or deflected to prevent the outward appearance of virtual image overlay with the HMD device user's eyes.

公开(公告)号：US20240120707A1

公开(公告)日：2024-04-11

申请号：US17960679

申请日：2022-10-05

Applicant: Microsoft Technology Licensing, LLC

Inventor： Yifei ZHANG ,  Thomas Hamish BARTER

IPC: H01S5/026 ,  F21V8/00 ,  G02B27/01 ,  G02F1/17 ,  G09G3/02 ,  H01S5/00 ,  H01S5/042

CPC classification number: H01S5/0265 ,  G02B6/0031 ,  G02B27/0172 ,  G02F1/17 ,  G09G3/02 ,  H01S5/0085 ,  H01S5/0427 ,  G02B2027/0112 ,  G02B2027/0118 ,  G02B2027/014 ,  G02B2027/0178 ,  G02F2201/06 ,  G02F2203/48 ,  G09G2310/06 ,  G09G2320/02 ,  G09G2320/041 ,  G09G2330/021

Abstract: A display system includes an integrated laser and modulator device and a display assembly. The integrated laser and modulator device includes a laser component configured to facilitate light emission responsive to applied current and a modulator component configured to selectively modulate light responsive to applied signal. The modulator component is integrally coupled to the laser component via a bridging structure that intervenes between the laser component and the modulator component. At least a portion of the bridging structure facilitates power reflectivity into a laser cavity of the laser component. The bridging structure facilitates transmission of light emitted by the laser component into the modulator component for modulation by the modulator component to provide modulated light. The display assembly is configured to direct the modulated light provided by the integrated laser and modulator device to illuminate pixels to form an image.