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1.发明公开
公开(公告)号：EP3980825A1
公开(公告)日：2022-04-13
申请号：EP20818304.6
申请日：2020-06-08
申请人： Digilens Inc.
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公开(公告)号：EP4350422A2
公开(公告)日：2024-04-10
申请号：EP24158294.9
申请日：2016-02-09
发明人： WALDERN, Jonathan David , GRANT, Alastair John , POPOVICH, Milan Momcilo , STANLEY, James H. , BROWN, Robert D.
IPC分类号： G02B27/42
摘要： An optical waveguide apparatus (30) comprises at least two total internal reflection TIR surfaces and containing a grating with fringes (31) disposed at ninety degrees to the waveguide TIR surfaces and slanted within a waveguide plane to provide a beam deflection angle within the waveguide plane; wherein an input TIR light comprises upward TIR light and downward TIR light diffracted respectively in at least first and second ranges of diffraction angles; the input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions, wherein each ray from said first angular range and its corresponding diffracted ray lie on the diffraction cone of said grating, wherein each diffraction provides a unique TIR angular range along a second propagation direction.
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公开(公告)号：EP3548939A2
公开(公告)日：2019-10-09
申请号：EP18727645.6
申请日：2018-01-26
申请人： DigiLens Inc.
IPC分类号： G02B5/18
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5.发明公开
公开(公告)号：EP4372451A3
公开(公告)日：2024-08-14
申请号：EP24152203.6
申请日：2019-03-18
申请人： Digilens Inc.
IPC分类号： G02F1/13363 , G02B5/18 , G02B6/10 , G02F1/01 , G02F1/1335 , G02B27/01 , G02B5/30 , G02B27/00
CPC分类号： G02B5/3016 , G02B6/2726 , G02B6/34 , G02B27/0081 , G02B27/0172 , G02B2027/017420130101 , G02B27/0103 , G02B2027/010920130101 , G02B2027/012520130101 , G02B5/3083 , G02B5/1833
摘要： Many embodiments in accordance with the invention are directed towards waveguides implementing birefringence control. In some embodiments, the waveguide includes a birefringent grating layer and a birefringence control layer. In further embodiments, the birefringence control layer is compact and efficient. Such structures can be utilized for various applications, including but not limited to: compensating for polarization related losses in holographic waveguides; providing three-dimensional LC director alignment in waveguides based on Bragg gratings; and spatially varying angular/spectral bandwidth for homogenizing the output from a waveguide. In some embodiments, a polarization-maintaining, wide-angle, and high-reflection waveguide cladding with polarization compensation is implemented for grating birefringence. In several embodiments, a thin polarization control layer is implemented for providing either quarter wave or half wave retardation.
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公开(公告)号：EP3710876A1
公开(公告)日：2020-09-23
申请号：EP18897932.2
申请日：2018-11-28
申请人： DigiLens Inc.
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公开(公告)号：EP4022370A1
公开(公告)日：2022-07-06
申请号：EP20856729.7
申请日：2020-08-28
申请人： Digilens Inc.
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公开(公告)号：EP3256888A1
公开(公告)日：2017-12-20
申请号：EP16706297.5
申请日：2016-02-09
发明人： WALDERN, Jonathan David , GRANT, Alastair John , POPOVICH, Milan Momcilo , STANLEY, James H. , BROWN, Robert D.
IPC分类号： G02B5/18 , G02F1/1334 , G02B27/01 , G02B27/42
CPC分类号： G02B6/34 , G02B5/1819 , G02B5/1823 , G02B5/32 , G02B6/0016 , G02B6/124 , G02B27/0172 , G02B27/4205 , G02B27/4261 , G02B2027/0125 , G02F1/13342
摘要： An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.
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公开(公告)号：EP4350422A3
公开(公告)日：2024-06-05
申请号：EP24158294.9
申请日：2016-02-09
发明人： WALDERN, Jonathan David , GRANT, Alastair John , POPOVICH, Milan Momcilo , STANLEY, James H. , BROWN, Robert D.
IPC分类号： G02B5/18 , G02F1/1334 , G02B27/01 , G02B27/42
CPC分类号： G02B5/1819 , G02B5/1823 , G02B27/4205 , G02B27/0172
摘要： An optical waveguide apparatus (30) comprises at least two total internal reflection TIR surfaces and containing a grating with fringes (31) disposed at ninety degrees to the waveguide TIR surfaces and slanted within a waveguide plane to provide a beam deflection angle within the waveguide plane; wherein an input TIR light comprises upward TIR light and downward TIR light diffracted respectively in at least first and second ranges of diffraction angles; the input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions, wherein each ray from said first angular range and its corresponding diffracted ray lie on the diffraction cone of said grating, wherein each diffraction provides a unique TIR angular range along a second propagation direction.
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10.发明公开
公开(公告)号：EP4372451A2
公开(公告)日：2024-05-22
申请号：EP24152203.6
申请日：2019-03-18
申请人： Digilens Inc.
IPC分类号： G02B27/00
CPC分类号： G02B5/3016 , G02B6/2726 , G02B6/34 , G02B27/0081 , G02B27/0172 , G02B2027/017420130101 , G02B27/0103 , G02B2027/010920130101 , G02B2027/012520130101 , G02B5/3083
摘要： Many embodiments in accordance with the invention are directed towards waveguides implementing birefringence control. In some embodiments, the waveguide includes a birefringent grating layer and a birefringence control layer. In further embodiments, the birefringence control layer is compact and efficient. Such structures can be utilized for various applications, including but not limited to: compensating for polarization related losses in holographic waveguides; providing three-dimensional LC director alignment in waveguides based on Bragg gratings; and spatially varying angular/spectral bandwidth for homogenizing the output from a waveguide. In some embodiments, a polarization-maintaining, wide-angle, and high-reflection waveguide cladding with polarization compensation is implemented for grating birefringence. In several embodiments, a thin polarization control layer is implemented for providing either quarter wave or half wave retardation.
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