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公开(公告)号：US20230396039A1
公开(公告)日：2023-12-07
申请号：US18234954
申请日：2023-08-17
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Keon Hwa LEE , Young Ho SONG
IPC: H01S5/42 , H01S5/0236 , H01S5/183
CPC classification number: H01S5/423 , H01S5/0236 , H01S5/18344 , H01S5/18341
Abstract: A vertical cavity surface emitting laser (VCSEL) chip, a VCSEL array, and a method of manufacturing the VCSEL array are disclosed. The VCSEL array includes a substrate, an adhesive layer coated on the substrate, a VCSEL chip disposed on the adhesive layer and fixed to the adhesive layer and configured to oscillate light or a laser by being supplied with power, a polymer coated on the VCSEL chip and the adhesive layer, and an interconnector electrically connected to the VCSEL chip.
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62.发明公开公开(公告)号：US20230264300A1
公开(公告)日：2023-08-24
申请号：US17921981
申请日：2021-06-18
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Swook HANN
IPC: B23K26/70 , B23K26/21 , B23K26/064 , B23K26/06
CPC classification number: B23K26/702 , B23K26/21 , B23K26/064 , B23K26/0608
Abstract: The present invention relates to a laser apparatus using optical fibers for stable laser welding and a laser welding method using same. Hybrid ring mode-shaped laser beams, in which a central beam using fiber laser is positioned at the center of outer beams using diode laser, are used to perform welding by irradiating a to-be-welded portion of an object with the outer beams, the central beam, and the outer beams in this order. Thus, since the welding is performed using the central beam as a heat source in a state in which the to-be-welded portion of the object has been heated with a sufficient amount of heat input, the temperature gradient of the to-be-welded portion is low and solidification cracking does not occur. Also, problems such as spatter and voids can be minimized, and the laser welding is stable, and thus a quality of welding that is uniform and stable overall can be obtained.
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公开(公告)号：US11415729B2
公开(公告)日：2022-08-16
申请号：US16586978
申请日：2019-09-28
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Seonkyu Yoon , Dongkil Lee , Kwanghoon Lee , Yanggyu Kim
Abstract: A multi-focal optical device comprises an image output unit outputting optical information, a linear polarizer uni-directionally polarizing the optical information, a first light reflector including a first polarizer transmitting light only in a first direction and reflecting the light transmitted through the first polarizer, a second light reflector including a second polarizer transmitting light only in a second direction perpendicular to the first direction and reflecting the light transmitted through the second polarizer, a light splitter splitting the optical information transmitted through the linear polarizer into the first light reflector and the second light reflector and reflecting the optical information reflected by one of the first light reflector or the second light reflector to allow the reflected optical information to form one focus, and a controller configured to control the linear polarizer to vary a direction of polarization of the linear polarizer.
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公开(公告)号：US11365864B2
公开(公告)日：2022-06-21
申请号：US17290008
申请日：2018-12-28
Applicant: Korea Photonics Technology Institute
Inventor： Sang-Yoo Kim , Kwang-Woo Park , Jong-Guck Kim , Su-Bin No
Abstract: The present invention relates to a rear lamp which has a 3D light distribution effect so as to represent a sense of depth by the infinity mirror effect and, more specifically, to a rear lamp configured to produce a movable light distribution image.
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公开(公告)号：US20220158011A1
公开(公告)日：2022-05-19
申请号：US17509283
申请日：2021-10-25
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Hyo Jin KIM , Chae Won KIM , Gwang Ryeol PARK
IPC: H01L31/0392 , H02S40/22 , H02S40/44 , H01L31/18
Abstract: According to an embodiment, a transparent solar cell, a photovoltaic system including the transparent solar cell, and a method for manufacturing the transparent solar cell are provided. The transparent solar cell comprises a substrate, an adhesive layer formed on the substrate, a metal layer formed on the adhesive layer, a solar cell layer formed on the metal layer, and a coating layer formed on the solar cell layer. The solar cell layer and the metal layer include a plurality of holes having a predetermined diameter.
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Patent Agency Ranking
公开(公告)号：US20220088696A1
公开(公告)日：2022-03-24
申请号：US16950920
申请日：2020-11-18
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Hoe Min KIM , Sung Kuk CHUN , Dong Kill LEE , Kwang Hoon LEE , Seon Man KIM
Abstract: According to an embodiment, an object tracking device in a welding process tracks and outputs a predetermined object in a welding image. The object tracking device comprises a camera device capturing the welding image including a base material and a welding torch for welding the base material, a controller receiving a plurality of camera control parameter-varied images from the camera device, identifying the predetermined object in the received images, and generating an object tracking image, the plurality of camera control parameter-varied images having varied camera control parameters of the camera device, and an output device outputting the welding image captured by the camera device, the plurality of images received by the controller, or the object tracking image generated by the controller.
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公开(公告)号：US10988406B2
公开(公告)日：2021-04-27
申请号：US16465424
申请日：2018-05-21
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Ju Hyeon Choi , Jung Whan In , June Park , Eui Sam Lee
Abstract: Disclosed is fluorophosphate glasses for an active device, the fluorophosphate glasses including: a metaphosphate composition including Mg(PO3)2 of about 20 mol % to about 60 mol %; a fluoride composition including BaF2 of about 20 mol % to about 60 mol % and CaF2 of about 0 mol % to about 40 mol %; and dopants including rare earth elements, in which there is an effect of increasing a carrier lifetime at a metastable state energy level that is stimulated-emitted due to an efficient energy transfer phenomenon by composition optimization of dopants (e.g. Er and Yb).
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公开(公告)号：US20200002217A1
公开(公告)日：2020-01-02
申请号：US16465424
申请日：2018-05-21
Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE
Inventor： Ju Hyeon CHOI , Jung Whan IN , June PARK , Eui Sam LEE
Abstract: Disclosed is fluorophosphate glasses for an active device, the fluorophosphate glasses including: a metaphosphate composition including Mg(PO3)2 of about 20 mol % to about 60 mol %; a fluoride composition including BaF2 of about 20 mol % to about 60 mol % and CaF2 of about 0 mol % to about 40 mol %; and dopants including rare earth elements, in which there is an effect of increasing a carrier lifetime at a metastable state energy level that is stimulated-emitted due to an efficient energy transfer phenomenon by composition optimization of dopants (e.g. Er and Yb).
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公开(公告)号：US09601340B2
公开(公告)日：2017-03-21
申请号：US14474995
申请日：2014-09-02
Inventor： Jaesoong Lee , Hyoin Kim
IPC: H01L29/16 , H01L27/15 , H01L31/12 , H01L33/06 , H01L21/285 , H01L29/12 , H01L21/02 , B82Y10/00 , B82Y40/00 , H01L29/06 , H01L29/205 , H01L33/18
CPC classification number: H01L21/28575 , B82Y10/00 , B82Y40/00 , H01L21/02381 , H01L21/02433 , H01L21/0254 , H01L21/02603 , H01L21/02653 , H01L29/0676 , H01L29/068 , H01L29/122 , H01L29/205 , H01L33/18
Abstract: Provided are electronic devices having quantum dots and methods of manufacturing the same. An electronic device includes a first nanorod, a quantum dot disposed on an upper surface of the first nanorod, and a second nanorod that covers a lateral surface of the first nanorod and the quantum dot. The first nanorod and the second nanorod are of opposite types.
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公开(公告)号：US20160352076A1
公开(公告)日：2016-12-01
申请号：US14994283
申请日：2016-01-13
Inventor： Jaesoong LEE , Jinwoo JU , Youngho SONG
CPC classification number: H01S5/34333 , H01S5/0425 , H01S5/2081 , H01S5/2272 , H01S5/3202 , H01S5/3428 , H01S2304/12
Abstract: Provided are a semiconductor laser diode and a method for fabricating the same. The semiconductor laser diode includes a c-plane substrate, a group III nitride layer disposed on the c-plane substrate, and a first semiconductor layer, an active layer, and a second semiconductor layer disposed on the group III nitride layer in the stated order, wherein each of the first semiconductor layer and the second semiconductor layer is exposed to the outside of the semiconductor laser diode.
Abstract translation: 提供半导体激光二极管及其制造方法。 半导体激光二极管包括c面基板，设置在c面基板上的III族氮化物层，以及按照所述顺序设置在III族氮化物层上的第一半导体层，有源层和第二半导体层 其中，所述第一半导体层和所述第二半导体层中的每一个暴露于所述半导体激光二极管的外部。
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