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公开(公告)号：US20230213390A1
公开(公告)日：2023-07-06
申请号：US17836568
申请日：2022-06-09
发明人： Jinmyoung KIM , Byonggwon SONG , Yooseong YANG , Duhyun LEE , Byungkyu LEE
CPC分类号： G01J5/20 , G01J5/58 , G01J2005/202
摘要： A long wavelength infrared sensor includes a first magnetoresistive unit; a second magnetoresistive unit; and a light absorption layer that absorbs light and emits heat, wherein the first magnetoresistive unit includes a first magnetoresistive element and a second magnetoresistive element electrically connected to each other, the second magnetoresistive unit includes a third magnetoresistive element and a fourth magnetoresistive element electrically connected to each other, the first and third magnetoresistive elements each have an antiparallel state of magnetization direction, the second and fourth magnetoresistive elements each have a parallel state of magnetization direction, and the first magnetoresistive element is electrically connected to the third magnetoresistive element by way of the second magnetoresistive element.
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2.发明申请公开(公告)号：US20200333678A1
公开(公告)日：2020-10-22
申请号：US16921056
申请日：2020-07-06
发明人： Duhyun LEE , Changgyun SHIN , Jisoo KYOUNG , Byounglyong CHOI
摘要： A phase modulation active device and a method of driving the phase modulation active device are provided. The phase modulation active device includes channels independently modulating a phase of incident light. The method includes selecting a first phase value and a second phase value to be used for the channels, setting a binary phase profile by allocating the selected first phase value or the selected second phase value to each of the channels quasi-periodically, in a sequence in which the channels are arranged, and driving the phase modulation active device, based on the set binary phase profile.
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公开(公告)号：US20200280174A1
公开(公告)日：2020-09-03
申请号：US16804442
申请日：2020-02-28
发明人： Duhyun LEE , Muhammad ALAM , Ghazaleh KAFAIE SHIRMANESH , Harry ATWATER , Pin Chieh WU , Ragip PALA
摘要： A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.
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公开(公告)号：US20200257958A1
公开(公告)日：2020-08-13
申请号：US16508484
申请日：2019-07-11
发明人： Duhyun LEE , Jaeduck JANG
摘要： Provided are an optical device which is capable of optically implementing an activation function of an artificial neural network and an optical neural network apparatus which includes the optical device. The optical device may include: a beam splitter splitting incident light into first light and second light; an image sensor disposed to sense the first light; an optical shutter configured to transmit or block the second light; and a controller controlling operations of the optical shutter, based on an intensity of the first light measured by the image sensor.
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公开(公告)号：US20180059507A1
公开(公告)日：2018-03-01
申请号：US15686935
申请日：2017-08-25
发明人： Sunil KIM , Duhyun LEE , Changbum LEE , Byounglyong CHOI
IPC分类号： G02F1/313
CPC分类号： G02F1/3137 , G02F1/2955 , G02F2001/311 , G02F2201/06
摘要： A laser beam steering device and a system including the same are provided. The laser beam steering device includes a waveguide through which a laser beam passes, and a cladding layer disposed on the waveguide. The cladding layer has a refractive index which changes according to an electrical signal applied thereto and thus a phase of a laser beam passing through the waveguide may be changed.
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公开(公告)号：US20170153527A1
公开(公告)日：2017-06-01
申请号：US15355710
申请日：2016-11-18
发明人： Sunil KIM , Changgyun SHIN , Jungwoo KIM , Duhyun LEE
IPC分类号： G02F1/29
CPC分类号： G02F1/29 , B82Y20/00 , G02F1/133602 , G02F1/292 , G02F2001/133614 , G02F2201/34 , G02F2202/10 , G02F2202/36 , G02F2203/24 , Y10S977/932
摘要： Provided are a beam steering device and a system including the same. The beam steering device includes a conversion layer having a refractive index which is variable via electrical control and a plurality of nanoantenna pattern layers stacked on the conversion layer. The refractive index of the conversion layer is electrically changed by a driver.
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公开(公告)号：US20230217128A1
公开(公告)日：2023-07-06
申请号：US18072689
申请日：2022-11-30
发明人： Yibing Michelle WANG , Chunji WANG , Yanhai REN , Tze-Ching FUNG , Duhyun LEE
IPC分类号： H04N25/713 , H04N25/53
CPC分类号： H04N25/713 , H04N25/53
摘要： The present disclosure relates to a method and system for imaging a scene. The method includes generating a shutter pattern and applying the shutter pattern to a photodetector array. The system includes a sensor architecture in three dimensions, where elements of the sensor architecture are stacked in two or more layers. Some elements of the sensor architecture include a photodetector array, register array, a generator to generate shutter patterns, readout circuitry, and an ISP.
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公开(公告)号：US20230016681A1
公开(公告)日：2023-01-19
申请号：US17948026
申请日：2022-09-19
发明人： Duhyun LEE , Muhammad ALAM , Harry ATWATER , Ragip PALA , Byunghoon NA , Seunghoon HAN
摘要： Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.
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公开(公告)号：US20220308369A1
公开(公告)日：2022-09-29
申请号：US17842327
申请日：2022-06-16
发明人： Duhyun LEE , Changgyun SHIN , Sunil KIM , Junghyun PARK , Byunggil JEONG
摘要： A light modulator for amplifying an intensity of incident light and modulating a phase of the incident light is provided. The light modulator includes: a first distributed Bragg reflector (DBR) layer having a first reflectivity and comprising at least two first refractive index layers that have different refractive indices from each other and are repeatedly alternately stacked; a second DBR layer having a second reflectivity and comprising at least two second refractive index layers that have different refractive indices from each other and are repeatedly alternately stacked; and an active layer disposed between the first DBR layer and the second DBR layer, and comprising a quantum well structure.
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公开(公告)号：US20220137402A1
公开(公告)日：2022-05-05
申请号：US17575189
申请日：2022-01-13
发明人： Junghyun PARK , Sunil KIM , Duhyun LEE , Byunggil JEONG
摘要： Provided are a beam scanning device and a system including the beam scanning device. The beam scanning device includes: a spatial light modulator configured to modulate a phase of a light for a corresponding pixel of a plurality of pixels; and a phase mask including a support plate arranged in an output direction of the light that is output from the spatial light modulator and a plurality of nanostructures arranged on the support plate differently for each of the plurality of pixels to control the phase of the light.
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