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公开(公告)号：US12131715B2
公开(公告)日：2024-10-29
申请号：US17424155
申请日：2020-01-16
CPC分类号： G09G3/3666 , G02B26/06 , G02F1/01 , G03H1/0443 , G03H1/2294 , G03H2001/2215
摘要： A system and method comprise a light source; a spatial light modulator including a substantially transparent material layer and a phase modulation layer; an imaging device configured to receive a light from the light source as reflected by the spatial light modulator, and to generate an image data; and a controller. The controller provides a phase-drive signal to the spatial light modulator and determines an attenuating wavefront of the substantially transparent material layer based on the image data.
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公开(公告)号：US12130507B1
公开(公告)日：2024-10-29
申请号：US18204158
申请日：2023-05-31
发明人： David Chow , Joseph Jensen , Jeong-Sun Moon , Kyung-Ah Son , Ryan Quarfoth
CPC分类号： G02F1/0147 , G01J1/0407 , G02F1/17
摘要： A reconfigurable optical frequency selective structure having embedded therein:
(a) an array of optical antennas for picking up propagating radiation in a visible or infrared frequency region and achieving preferential absorption of electromagnetic energy at a target wavelength k within the region,
(b) an array of optical mesa structures of sub-wavelength scale including a phase-change material, the array of optical antennas being disposed atop the array of optical mesa structures respectively;
(c) a metal ground plane disposed beneath the array of optical mesa structures, the array of optical mesa structures standing above the ground plane or an interfacial layer and being separated from one another to inhibit parasitic capacitance coupling therebetween; and
(d) a plurality of heaters for selectively heating any one of the array of optical mesa structures to cause the phase change material in the selected optical mesa structure to change from an amorphous state, wherein the antenna atop the selected mesa structure is capacitively coupled to the metal ground plane, to a crystalline state wherein the antenna atop the selected mesa structure is electrically shunted to the ground plane via the selected mesa structure.-
公开(公告)号：US12126273B2
公开(公告)日：2024-10-22
申请号：US18040076
申请日：2021-08-30
CPC分类号： H02M7/44 , G02F1/0121 , G02F1/137 , H02M1/10
摘要： A method for driving an electro-optical functional layer by a control, the functional layer being applied on a substrate and being variable in its transmissive and/or reflective properties by applying an electric field, the control unit having a supply voltage input and a feed output, and a voltage measuring system and an energy store, includes measuring a voltage actually available at the supply voltage input, if the available voltage is greater than a reference value, driving the functional layer with an AC voltage via the feed output, the energy store being charged at least in sections, if the available voltage is less than or equal to a reference value, driving the functional layer with a DC voltage via the feed output. At least part of the energy for the driving is drawn from the energy store. The DC voltage is less than the peak value of the AC voltage.
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公开(公告)号：US12114053B2
公开(公告)日：2024-10-08
申请号：US17979124
申请日：2022-11-02
发明人： Hiroyuki Kuroki
CPC分类号： H04N23/50 , G02F1/0121
摘要： An imaging apparatus includes: an imaging element including an imaging surface; a first filter unit including a first optical filter; and a drive mechanism configured to move the first filter unit in parallel in a second direction intersecting a first direction being a normal direction of the imaging surface and between a first filtering position and a first retraction position. The first filtering position is a position at which the first optical filter is present in front of the imaging surface, and the first retraction position is a position at which the first optical filter is deviated from a front of the imaging surface. The drive mechanism includes a belt member coupled to the first filter unit, and a belt drive member configured to rotate in a state where the belt member is partially wound, the belt drive member configured to move a first portion of the belt member to which the first filter unit is coupled in the second direction.
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公开(公告)号：US20240329488A1
公开(公告)日：2024-10-03
申请号：US18128528
申请日：2023-03-30
CPC分类号： G02F1/212 , G02F1/0147 , G02F1/225 , G02F2201/58 , G02F2203/15
摘要： An apparatus is provided, in which a feedback loop for tuning a tunable laser includes a Mach-Zehnder interferometer (MZI), a photodetector optically coupled to an optical output of the MZI, and an electrical feedback control circuit connected to receive electrical output signals from the photodetector and configured to frequency-adjust the tunable laser based on the received electrical output signals. One arm of the MZI includes an optical resonator to provide a frequency reference for tuning.
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公开(公告)号：US20240329479A1
公开(公告)日：2024-10-03
申请号：US18698653
申请日：2022-10-05
发明人： Frédéric MONDIOT , Hervé MONTIGAUD
IPC分类号： G02F1/137 , G02F1/01 , G02F1/1333 , G02F1/1343 , G02F1/1347
CPC分类号： G02F1/13756 , G02F1/0136 , G02F1/133365 , G02F1/13439 , G02F1/1347 , G02F2202/04
摘要： An optical system composed of a first electrically controllable device which has variable scattering and color by first liquid crystals stabilized in a polymeric network and first dichroic dyes and a second electrically controllable device having variable polarization by second liquid crystals and second dichroic dyes.
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公开(公告)号：US20240329434A1
公开(公告)日：2024-10-03
申请号：US18554749
申请日：2021-06-22
CPC分类号： G02F1/0136 , G03B11/00 , G03B33/08 , G03B35/02
摘要： A color camera system according to an example includes a red, green, blue (RGB) color camera device to capture images of an object, and a polarized illumination source to illuminate the object during the capture of the images. The color camera system further includes a liquid crystal tunable polarization filter positioned between the camera device and the object, wherein the liquid crystal tunable polarization filter is to provide the camera device with selectable linear polarization viewing states for capturing the images of the object, and is to provide capability for each RGB pixel to be uniquely processed using RGB color distinct polarization filter parameters.
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公开(公告)号：US20240319006A1
公开(公告)日：2024-09-26
申请号：US18615915
申请日：2024-03-25
发明人： Guifang Li
CPC分类号： G01J1/4228 , G01J1/44 , G02F1/0121 , G02F1/015
摘要： An optical receiver may include multiple photodetectors connected in serial and an amplifier connected to the photodetectors, where the amplifier is configured to amplify an electrical signal generated by the photodetectors in response to illumination. The receiver may further include one or more optical elements to receive signal light and direct the signal light to a subset of the plurality of photodetectors. The receiver may further include an illumination source to illuminate the plurality of photodetectors with flood illumination during operation. An optical modulator may include multiple modulators connected in serial and driven by a common voltage driver.
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公开(公告)号：US12099264B2
公开(公告)日：2024-09-24
申请号：US17888804
申请日：2022-08-16
申请人： zSpace, Inc.
发明人： Hsienhui Cheng , Jianhong Huang
CPC分类号： G02F1/0136 , G02B30/25 , H05B47/10
摘要： Systems and methods for providing an electrical waveform to a pi-cell polarization switch. The electrical waveform may reduce/limit ion accumulation in and/or light leakage associated with the polarization switch. The electrical waveform may include multiple segments, e.g., a first segment may drive the polarization switch to a first polarization state and may be defined by a first portion having a first voltage level and a first polarity and a second portion having the first voltage level and a second polarity opposite the first polarity and a second segment, occurring after the first segment, that may drive the polarization switch to the second polarization state. The second segment may be defined by a second voltage level having the first polarity. An absolute value of the first voltage level may be greater than an absolute value of the second voltage level.
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公开(公告)号：US12092938B2
公开(公告)日：2024-09-17
申请号：US17475960
申请日：2021-09-15
申请人： LG DISPLAY CO., LTD.
发明人： Youngtae Kim , SeungCheol Oh , Woongjin Seo
CPC分类号： G02F1/17 , G02F1/0102
摘要： A display device having a visual angle control film can attenuate an interference phenomenon between a panel and a visual angle control film and effectively shield unnecessary light of a visual angle, the display device comprises a display panel; and a visual angle control film disposed on the display panel, wherein the visual angle control film may include a plurality of light-shielding patterns for shielding light advancing in a side direction except a front direction of the display panel in a visual angle control mode, and each of the plurality of light-shielding patterns may have a thickness in the range of 8% to 25% of a pixel area of the display panel, an interval in the range of 33% to 39% of the pixel size, and a slope angle in the range of ±5° to 15° based on 90°.
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