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公开(公告)号：US20210311260A1
公开(公告)日：2021-10-07
申请号：US17352156
申请日：2021-06-18
摘要： A device including a waveguide having a first waveguide surface and a second waveguide surface parallel to the first waveguide surface is disclosed. The device may include a first light coupling device operatively coupled to the waveguide. The first light coupling device may include a first duct structure and a second duct structure oriented to reflect in-coupled light. Each of the first duct structure and the second duct structure may includes a first planar region and a second planar region parallel to the first planar region and a first surface and a second surface parallel to the first surface. The device may also include a second light coupling device disposed between the first waveguide surface and the second waveguide surface. The second light coupling device may be to positioned to receive reflected in-coupled light from the first light coupling device.
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公开(公告)号：US20210191113A1
公开(公告)日：2021-06-24
申请号：US17194044
申请日：2021-03-05
摘要： A method of dispersion compensation in an optical device is disclosed. The method may include identifying a first hologram grating vector of a grating medium of the optical device. The first hologram grating vector may correspond to a first wavelength of light. The method may include determining a probe hologram grating vector corresponding to a second wavelength of light different from the first wavelength of light. The method may also include determining a dispersion-compensated second hologram grating vector based at least in part on the probe hologram grating vector and the first hologram grating vector. A device for reflecting light is disclosed. The device may include a grating medium and a grating structure within the grating medium. The grating medium may include a dispersion compensated hologram.
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公开(公告)号：US20210109350A9
公开(公告)日：2021-04-15
申请号：US16089702
申请日：2017-03-01
发明人： Mark Ayres , Adam Urness , Kenneth Anderson , Friso Schlottau
摘要： An optical reflective device for pupil equalization including at least one or more grating structures within a grating medium is disclosed. The grating structures may have reflective axes that need not be constrained to surface normal. The grating structures are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. The optical reflective device may reflect light towards a specific location, such as an exit pupil or eye box. Each grating structure within the device may be configured to reflect light of a particular wavelength at a plurality of incidence angles.
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公开(公告)号：US20190101760A1
公开(公告)日：2019-04-04
申请号：US16089702
申请日：2017-03-01
发明人： Mark Ayres , Adam Urness , Kenneth Anderson , Friso Schlottau
摘要： An optical reflective device for pupil equalization including at least one or more grating structures within a grating medium is disclosed. The grating structures may have reflective axes that need not be constrained to surface normal. The grating structures are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. The optical reflective device may reflect light towards a specific location, such as an exit pupil or eye box. Each grating structure within the device may be configured to reflect light of a particular wavelength at a plurality of incidence angles.
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公开(公告)号：US10185069B2
公开(公告)日：2019-01-22
申请号：US15849532
申请日：2017-12-20
发明人： Mark R. Ayres , Kenneth Anderson , Adam Urness , Friso Schlottau
摘要： An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.
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公开(公告)号：US20180252869A1
公开(公告)日：2018-09-06
申请号：US15894903
申请日：2018-02-12
CPC分类号： G02B6/34 , G02B27/0081 , G02B27/0172 , G02B27/4272
摘要： A device including a waveguide having a first waveguide surface and a second waveguide surface parallel to the first waveguide surface is disclosed. The device may include a first light coupling device operatively coupled to the waveguide. The first light coupling device may include a first duct structure and a second duct structure oriented to reflect in-coupled light. Each of the first duct structure and the second duct structure may includes a first planar region and a second planar region parallel to the first planar region and a first surface and a second surface parallel to the first surface. The device may also include a second light coupling device disposed between the first waveguide surface and the second waveguide surface. The second light coupling device may be to positioned to receive reflected in-coupled light from the first light coupling device.
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公开(公告)号：US11733519B2
公开(公告)日：2023-08-22
申请号：US16859926
申请日：2020-04-27
CPC分类号： G02B27/0172 , G02B5/18 , G02B6/0016 , G02B6/0031 , G02B6/0055 , G02B27/14 , G02B27/144 , G03H1/02 , G03H1/0402 , G02B5/32 , G02B2027/0118 , G02B2027/0147 , G02B2027/0174 , G02B2027/0178 , G03H2001/026 , G03H2001/0216 , G03H2001/0441 , G03H2222/45
摘要： An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles.
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公开(公告)号：US20200225476A1
公开(公告)日：2020-07-16
申请号：US16649107
申请日：2018-09-27
摘要： An optical reflective device including a waveguide and longitudinal light homogenizing structures mounted to a surface of the waveguide are disclosed. The light homogenizing structures may receive input light and produce longitudinally homogenized light by homogenizing the input light along a longitudinal dimension of the waveguide. A cross-coupler in the waveguide may receive the longitudinally homogenized light from the light homogenizing structures and may produce two-dimensionally homogenized light by redirecting the longitudinally homogenized light along a lateral dimension of the waveguide. The light homogenizing structures may include partially reflective layers, stacked substrate layers with refractive index mismatches, and/or a combination of partially and fully reflective layers. The cross coupler and/or partially reflective layer may be formed using sets of holograms. A prism or a slanted substrate surface may couple the input light into the substrate.
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公开(公告)号：US09891363B2
公开(公告)日：2018-02-13
申请号：US15517159
申请日：2016-08-24
发明人： Mark R. Ayres , Kenneth Anderson , Adam Urness , Friso Schlottau
CPC分类号： G02B5/32 , G02B5/1857 , G02B5/1861 , G02B27/0172 , G02B2027/0174 , G03H1/0248 , G03H1/265 , G03H2001/0415 , G03H2001/0439 , G03H2001/2615 , G03H2001/264
摘要： An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.
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公开(公告)号：US20240168215A1
公开(公告)日：2024-05-23
申请号：US18412279
申请日：2024-01-12
CPC分类号： G02B6/0028 , G02B5/18 , G02B6/0035 , G02B6/34 , G02B27/0172 , G02B5/32
摘要： An optical device including a first layer of a total internal reflection (TIR) waveguide and a second layer of the TIR waveguide is disclosed. The second layer of the TIR waveguide may be coupled to the first layer. The second layer may include an output coupling device configured to reflect light toward an exit face of the TIR waveguide. The output coupling device may include one or more diffractive gratings. The optical device may also include an input coupling face disposed on a non-diffractive edge portion the first layer or the second layer or both the first and second layer. The input coupling face may be configured to receive image light. Another optical device may include an input coupling face disposed on a non-diffractive input coupling element. The non-diffractive input coupling element may be positioned in an optical path for directing the image light to the TIR waveguide.
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