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公开(公告)号：US11435226B2
公开(公告)日：2022-09-06
申请号：US16403382
申请日：2019-05-03
Inventor： Kee-Suk Hong , Dong-Hoon Lee , Seongchong Park , Jisoo Hwang
Abstract: Provided are an apparatus and method for measuring quantum efficiency of a detector using a single pulse laser. Quantum efficiency of the measurement target detector may be measured from 420 nm to 1600 nm having uncertainty of 2% to 4% (K=2) by comparing the reference detector and the measurement target detector significantly different in sensitivity using a single laser pulse as a spectral light source. Also, it is possible to directly compare the two detectors with a significant difference in sensitivity through a very simple setup that causes a portion of a laser pulse output from a light source part to be absorbed by the reference detector and the laser pulse reflected from the reference detector to be irradiated to the measurement target detector.
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Patent Agency Ranking
公开(公告)号：US20160138970A1
公开(公告)日：2016-05-19
申请号：US15007884
申请日：2016-01-27
Inventor： Dong-Hoon Lee , Seongchong Park , Dong-Joo Shin
IPC: G01J1/42
CPC classification number: G01J1/4228 , G01J1/16 , G01J1/429
Abstract: An ultraviolet index measuring method and apparatus includes preparing a first photosensor having spectral response only in a first section of a wavelength between 250 nm and 298 nm, a second photosensor having spectral response only in a second section of a wavelength between 298 nm and 328 nm, and a third photosensor having spectral response only in a third section of a wavelength between 328 nm and 400 nm. An output signal of the first photosensor, an output signal of the second photosensor, and an output signal of the third photosensor are calibrated using spectral irradiance of reference solar light. First photocurrent of the first photosensor, second photocurrent of the second photosensor, and third photocurrent of the third photosensor are measured under a measurement environment. An ultraviolet index is calculated using the first photocurrent, the second photocurrent, and the third photocurrent under the measurement environment.
Abstract translation: 紫外线指数测量方法和装置包括仅在波长在250nm和298nm之间的第一部分中制备具有光谱响应的第一光电传感器，仅在波长在298nm和328nm之间的第二部分中具有光谱响应的第二光电传感器 以及仅在波长在328nm和400nm之间的第三部分中具有光谱响应的第三光电传感器。 第一光电传感器的输出信号，第二光电传感器的输出信号和第三光传感器的输出信号使用参考太阳光的光谱辐射来校准。 在测量环境下测量第一光电传感器的第一光电流，第二光电传感器的第二光电流和第三光电传感器的第三光电流。 在测量环境下使用第一光电流，第二光电流和第三光电流计算紫外线指数。
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公开(公告)号：US20150214693A1
公开(公告)日：2015-07-30
申请号：US14674306
申请日：2015-03-31
Inventor： Kee-Suk HONG , Dong-Hoon Lee , Seongchong Park , Seung-Nam Park , Seung-Kwan Kim
CPC classification number: H01S3/1305 , G02B6/14 , G02F1/125 , H01S3/005 , H01S3/0085 , H01S3/10 , H01S3/13 , H01S3/1306
Abstract: A pulse laser output stabilizing apparatus including a directional coupler to receive output of pulse laser, the output branching into a first optical path and a second optical path, a photodetector to receive light branching into the first optical path and output current according to intensity of the light, a current-voltage converter to convert output current of the photodetector into a voltage and output converted voltage, a function generator to provide an output proportional to output signal of the current-voltage converter with a predetermined frequency, a time delay unit on the second optical path providing a predetermined time delay for feedback control, and an acousto-optic tunable modulator to receive output signal of the functional generator and optical signal from the time delay unit as an input and modulate and output the optical signal from the time delay unit according to amplitude of the output signal of the function generator.
Abstract translation: 一种脉冲激光输出稳定装置，包括定向耦合器以接收脉冲激光器的输出，分支到第一光路和第二光路中的输出，光接收器，用于接收分支到第一光路中的光，并根据 光，电流 - 电压转换器，用于将光电检测器的输出电流转换为电压和输出转换电压;功能发生器，用于以预定频率提供与电流 - 电压转换器的输出信号成比例的输出;时间延迟单元， 提供用于反馈控制的预定时间延迟的第二光路;以及声光可调谐调制器，用于接收功能发生器的输出信号和来自时间延迟单元的光信号作为输入，并且调制并输出来自时间延迟单元的光信号 根据函数发生器的输出信号的幅度。
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公开(公告)号：US09952093B2
公开(公告)日：2018-04-24
申请号：US15007884
申请日：2016-01-27
Inventor： Dong-Hoon Lee , Seongchong Park , Dong-Joo Shin
CPC classification number: G01J1/4228 , G01J1/16 , G01J1/429
Abstract: An ultraviolet index measuring method and apparatus includes preparing a first photosensor having spectral response only in a first section of a wavelength between 250 nm and 298 nm, a second photosensor having spectral response only in a second section of a wavelength between 298 nm and 328 nm, and a third photosensor having spectral response only in a third section of a wavelength between 328 nm and 400 nm. An output signal of the first photosensor, an output signal of the second photosensor, and an output signal of the third photosensor are calibrated using spectral irradiance of reference solar light. First photocurrent of the first photosensor, second photocurrent of the second photosensor, and third photocurrent of the third photosensor are measured under a measurement environment. An ultraviolet index is calculated using the first photocurrent, the second photocurrent, and the third photocurrent under the measurement environment.
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公开(公告)号：US09587984B2
公开(公告)日：2017-03-07
申请号：US15165814
申请日：2016-05-26
Inventor： Seongchong Park , Dong-Hoon Lee , Chul-Woung Park , Seung-Nam Park
CPC classification number: G01J3/504 , G01J3/0254 , G01J3/0262 , G01J3/04 , G01J2003/045
Abstract: A gonio-spectroradiometer and a measuring method thereof. The gonio-spectroradiometer includes a light source rotating on a light source axis, a first integrating sphere revolving around the light source with respect to a revolving axis perpendicular to the light source axis with a fixed radius and including an entrance formed in a direction to see the light source, a light intensity modulator adapted to modulate light intensity of light received through the first integrating sphere according to the rotation amount of the revolving axis, and a detector adapted to measure output light of the light intensity modulator at each wavelength.
Abstract translation: 光谱辐射计及其测量方法。 陀螺仪辐射计包括在光源轴上旋转的光源，围绕光源围绕光源轴线垂直于光源轴线旋转的第一积分球，其具有固定的半径，并且包括沿着观察方向形成的入口 光源，适于根据旋转轴的旋转量调制通过第一积分球接收的光的光强度的光强调制器，以及适于测量每个波长的光强度调制器的输出光的检测器。
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公开(公告)号：US20160273966A1
公开(公告)日：2016-09-22
申请号：US15165814
申请日：2016-05-26
Inventor： Seongchong Park , Dong-Hoon Lee , Chul-Woung Park , Seung-Nam Park
CPC classification number: G01J3/504 , G01J3/0254 , G01J3/0262 , G01J3/04 , G01J2003/045
Abstract: A gonio-spectroradiometer and a measuring method thereof. The gonio-spectroradiometer includes a light source rotating on a light source axis, a first integrating sphere revolving around the light source with respect to a revolving axis perpendicular to the light source axis with a fixed radius and including an entrance formed in a direction to see the light source, a light intensity modulator adapted to modulate light intensity of light received through the first integrating sphere according to the rotation amount of the revolving axis, and a detector adapted to measure output light of the light intensity modulator at each wavelength.
Abstract translation: 光谱辐射计及其测量方法。 陀螺仪辐射计包括在光源轴上旋转的光源，围绕光源围绕光源轴线垂直于光源轴线旋转的第一积分球，其具有固定的半径，并且包括沿着观察方向形成的入口 光源，适于根据旋转轴的旋转量调制通过第一积分球接收的光的光强度的光强调制器，以及适于测量每个波长的光强度调制器的输出光的检测器。
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