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公开(公告)号：US11747655B2
公开(公告)日：2023-09-05
申请号：US17122311
申请日：2020-12-15
发明人： Changwon Jang , Afsoon Jamali
CPC分类号： G02F1/0136 , G02F1/1396 , G02F1/13306
摘要： A device includes a segmented polarization switch including a plurality of polarization switch segments. The device also includes a polarization selective optical element (“PSOE”) optically coupled to the segmented polarization switch and including a plurality of polarization selective segments. The device further includes a controller configured to control the polarization switch segments to operate in a switching state or a non-switching state to control optical states of the polarization selective segments.
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公开(公告)号：US11615647B1
公开(公告)日：2023-03-28
申请号：US16696776
申请日：2019-11-26
发明人： Gregory Olegovic Andreev , Gang Li , Changwon Jang
摘要： Systems and method for eye tracking are provided. In some embodiments, the eye tracking system includes a light source configured to generate light and project the light toward an object in a field of view, a detector configured to receive reflected portions of the light from the field of view in order to image the object, and a combiner including a volume grating configured to direct light reflected from different points in a field of view to the light detector. The volume grating includes a plurality of portions along a first area and each of the portions comprising a unique k-vector that is dependent on a respective portion of the field of view.
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公开(公告)号：US11598964B2
公开(公告)日：2023-03-07
申请号：US16854528
申请日：2020-04-21
发明人： Afsoon Jamali , Gang Li , Changwon Jang
摘要： A freeform varifocal optical assembly includes at least three optical modules including a first plurality of optical elements including Pancharatnam-Berry phase (PBP) lenses, polarization sensitive hologram (PSH) lenses, metamaterials, or combinations thereof. The plurality of optical elements of each optical module include a property associated with a Zernike polynomial. Each of the first and the three optical modules are configurable between a plurality of optical powers. The freeform varifocal optical assembly is configurable to output a predetermined wavefront in response to an input wavefront.
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公开(公告)号：US20240319509A1
公开(公告)日：2024-09-26
申请号：US18734641
申请日：2024-06-05
发明人： Afsoon Jamali , Changwon Jang , Sandro Pintz
CPC分类号： G02B27/0172 , G02B3/14 , G02B5/3016 , G02B26/004
摘要： A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.
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公开(公告)号：US20230324672A1
公开(公告)日：2023-10-12
申请号：US17700761
申请日：2022-03-22
CPC分类号： G02B26/0808 , G02B5/3025 , G02B27/0172 , G06F3/013 , G06T7/246 , G02B2027/0178
摘要： A device is provided. The device includes a first lens configured to provide a first optical power that is variable within a first optical power adjustment range at a first step resolution. The device also includes a second lens coupled with the first lens and including a deformable member that is deformable to vary an optical power of the second lens. The second lens is configured to provide a second optical power that is variable within a second optical power adjustment range at a second step resolution, the second step resolution being smaller than the first step resolution.
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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.
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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.
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