-
公开(公告)号：US11719876B2
公开(公告)日：2023-08-08
申请号：US17721282
申请日：2022-04-14
发明人： Ying Geng , Adrian Travis , Gang Li
CPC分类号： G02B6/0061 , G02B5/32 , G02B6/0046 , G02B6/0051 , G02B6/0068 , G02B27/0172 , G02B2027/0174
摘要： A device for illuminating a spatial light modulator includes a light source and an optical element. The light source is configured to provide illumination light. The optical element has a first surface, a second surface that is distinct from and non-parallel to the first surface, and a third surface that is distinct from and non-parallel to the first surface and the second surface. The optical element is configured to receive the illumination light at the first surface, propagate the illumination light via total internal reflection, and output the illumination light from the third surface. Also disclosed is a method performed by the device.
-
公开(公告)号：US11586024B1
公开(公告)日：2023-02-21
申请号：US16532311
申请日：2019-08-05
发明人： Ying Geng , Brian Wheelwright , Jacques Gollier , Yusufu Njoni Bamaxam Sulai , Babak Amirsolaimani , Weichuan Gao , Gang Li , Mengfei Wang
摘要： An optical assembly includes at least one substrate that provides a first curved surface and a second surface. The optical assembly also includes a beam splitter on the first curved surface, a reflector on the second surface, and an optical retarder disposed between the beam splitter and the reflector. The optical assembly is configured to receive first light at the first curved surface and reflect the first light at the reflector and subsequently, at the beam splitter before outputting the first light from the reflector. The first light is transmitted through the optical assembly at a first optical power. The optical assembly is also configured to transmit second light at a second optical power that is less than the first optical power. The second light is transmitted through peripheral portions of the beam splitter and reflector without reflection at the reflector.
-
公开(公告)号：US20230393322A1
公开(公告)日：2023-12-07
申请号：US17834760
申请日：2022-06-07
发明人： Xiayu Feng , Zhexin Zhao , Xuan Wang , Hekun Huang , Gang Li , Lu Lu
CPC分类号： G02B6/0023 , G02B27/4222 , G02B6/005 , G02B5/32 , G02B27/0172
摘要： A display apparatus includes a lightguide for conveying images to an eyebox. The lightguide includes a substrate, a diffractive optical element (DOE) configured to couple the image light into the substrate. The DOE has a spatially variable pitch configured to provide the DOE with a positive optical power. The lightguide further includes a grating out-coupler supported by the substrate for out-coupling portions of the image light from the substrate toward the eyebox.
-
公开(公告)号：US11668932B2
公开(公告)日：2023-06-06
申请号：US16735425
申请日：2020-01-06
发明人： Lu Lu , Gang Li , Seungjae Lee , Mengfei Wang
CPC分类号： G02B27/0081 , G02B5/1871 , G02B26/0833 , G02B27/0093 , G02B27/4233 , G02F1/0136
摘要： Various embodiments set forth a foveated display system and components thereof. The foveated display system includes a peripheral display module disposed in series with a foveal display module. The peripheral display module is configured to generate low-resolution, large field of view imagery for a user's peripheral vision. The foveal display module is configured to perform foveated rendering in which high-resolution imagery is focused towards a foveal region of the user's eye gaze. The peripheral display module may include a diffuser that is disposed within a pancake lens, which is a relatively compact design. The foveal display module may include a Pancharatnam-Berry Phase grating stack that increases the steering range of a beam-steering device such that a virtual image can be steered to cover an entire field of view visible to the user's eye.
-
公开(公告)号：US11650426B2
公开(公告)日：2023-05-16
申请号：US16854667
申请日：2020-04-21
发明人： Qi Zhang , Gang Li , Robin Sharma , Gregory Olegovic Andreev , Andrew John Ouderkirk , Karol Constantine Hatzilias , Ying Geng
CPC分类号： G02B27/0179 , G02B5/32 , G02B27/0081 , G02B27/0172 , G02B27/425 , G02B2027/0109 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G03H1/0402 , G03H2001/0413 , G03H2001/0439 , G03H2223/12 , G03H2223/24 , G03H2260/12
摘要： Techniques disclosed herein relate generally to eye-tracking in near-eye display systems. One example of an eye illuminator for eye-tracking includes a substrate transparent to visible light, an array of light sources immersed in the substrate and configured to emit infrared light, and a holographic optical element conformally coupled to a surface of the substrate and encapsulated by an encapsulation layer. The holographic optical element is configured to transmit the visible light and diffract the infrared light emitted by the array of light sources to the eye of a user for eye-tracking.
-
公开(公告)号：US11619815B2
公开(公告)日：2023-04-04
申请号：US16733092
申请日：2020-01-02
发明人： Gang Li , Changwon Jang , Giseung Bang , Andrew Maimone , Mengfei Wang , Afsoon Jamali , Lu Lu , Hao Yu
IPC分类号： G02B27/01
摘要： An optical assembly includes a beam steering device and a holographic optical element. The beam steering device is switchable between different states including a first state and a second state. The beam steering device includes a first polarization-selective optical element and a first tunable optical retarder optically coupled with the first polarization-selective optical element. The holographic optical element is positioned relative to the beam steering device for receiving light from the beam steering device and projecting a first light pattern while the beam steering device is in the first state and a second light pattern distinct from the first light pattern while the beam steering device is in the second state.
-
公开(公告)号：US11561510B1
公开(公告)日：2023-01-24
申请号：US16517535
申请日：2019-07-19
发明人： Andrew Maimone , Gang Li , Afsoon Jamali , Changwon Jang
摘要： An optical device includes a light source configured to provide a light beam. The optical device includes a light source configured to generate a light beam, and a spatial light modulator (“SLM”) configured to modulate the light beam to provide a hologram for generating a display image. The optical device includes a polarization-selective steering assembly configured to provide a plurality of steering states for the modulated light beam. The optical device includes an image combiner configured to focus the modulated light beam steered by the polarization-selective steering assembly to generate an array of spots at an eye-box of the optical device.
-
公开(公告)号：US11933995B1
公开(公告)日：2024-03-19
申请号：US17719303
申请日：2022-04-12
发明人： Mengfei Wang , Gang Li , Lu Lu , Yunqi Li
IPC分类号： G02B27/01 , G02B5/02 , G02B27/28 , G02F1/13357
CPC分类号： G02B5/0278 , G02B27/0172 , G02B27/286 , G02F1/13362 , G02B2027/0174 , G02B2027/0178
摘要： An optical diffuser includes optically anisotropic molecules arranged in a predefined configuration such that the optical diffuser diffuses first light having a first polarization and transmits second light having a second polarization that is different from the first polarization upon receiving the second light. In addition to polarization selectivity, the optical diffuser may also exhibit wavelength selectivity and/or incident angle selectivity. A method of diffusing light using the optical diffuser and a method of making the optical diffuser are also disclosed.
-
公开(公告)号：US11662582B2
公开(公告)日：2023-05-30
申请号：US16996398
申请日：2020-08-18
发明人： Gang Li , Yang Zhao , Changwon Jang , Weichuan Gao
CPC分类号： G02B27/0172 , G02B5/32 , G03H1/2205 , G02B2027/0174 , G02B2027/0178 , G03H2001/2231
摘要： A display device includes an image source, a holographic relay, and a holographic image combiner in an off-axis configuration. The holographic relay may include a pair of freeform holographic reflectors relaying light of the image source to an intermediate image plane. The holographic image combiner receives and redirects the relayed light from the holographic relay, forming an image in angular domain at an eyebox of the display device, the image in angular domain corresponding to the image in linear domain generated by the image source.
-
10.发明授权公开(公告)号：US11435585B1
公开(公告)日：2022-09-06
申请号：US16666918
申请日：2019-10-29
摘要： An optical device having suppressed rainbow effect is provided. The optical device includes a light source configured to generate an image light, an optical combiner coupled with the light source and configured to direct the image light to an eye-box of the optical device, and a dimming element disposed at the optical combiner. The optical combiner includes at least one diffractive element. The optical combiner has a first side facing the eye-box and an opposing second side facing a real world, and the dimming element is disposed at the second side of the optical combiner. The dimming element is configured to receive a light from the real world and significantly attenuate an intensity of the light having an incidence angle in a predetermined range.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.028 秒)
