公开(公告)号：US08314405B2

公开(公告)日：2012-11-20

申请号：US12252313

申请日：2008-10-15

Applicant: Dug Young Kim ,  Sucbei Moon ,  Dongsoo Lee

Inventor： Dug Young Kim ,  Sucbei Moon ,  Dongsoo Lee

IPC: G01T1/10 ,  G01N21/61

CPC classification number: G01N21/6408

Abstract: Disclosed is an apparatus for measuring a fluorescence lifetime. The apparatus for measuring the fluorescence lifetime comprises an excitation light generator that generates excitation light to be irradiated on a sample including fluorescence molecules; a fluorescence photon collecting unit that collects a plurality of fluorescence photons generated by irradiating the excitation light on the sample; a light sensor that converts the collected fluorescence photons into a fluorescence electrical signal; and a fluorescence lifetime signal processor that determines the fluorescence lifetime by calculating the average time of the fluorescence electrical signal with respect to a predetermined apparatus delay time. According to the above configuration, the present invention can accurately and precisely measure a fluorescence lifetime in a short measurement time by easy calculation.

Abstract translation: 公开了一种用于测量荧光寿命的装置。 用于测量荧光寿命的装置包括激发光发生器，其产生要照射在包含荧光分子的样品上的激发光; 荧光光子收集单元，其收集通过将样品上的激发光照射而产生的多个荧光光子; 将所收集的荧光光子转换成荧光电信号的光传感器; 以及荧光寿命信号处理器，其通过相对于预定的设备延迟时间计算荧光电信号的平均时间来确定荧光寿命。 根据上述结构，本发明能够通过容易的计算在短的测定时间内精确而准确地测定荧光寿命。

公开(公告)号：US08098371B2

公开(公告)日：2012-01-17

申请号：US12350786

申请日：2009-01-08

Applicant: Dug Young Kim ,  In Hee Shin ,  Dong Ju Lee

Inventor： Dug Young Kim ,  In Hee Shin ,  Dong Ju Lee

IPC: G01N21/00

CPC classification number: G01M11/37 ,  G01L5/0047

Abstract: The present invention relates to an apparatus for measuring a residual stress of an optical fiber. More particularly, the present invention relates to an apparatus for measuring residual stress of an optical fiber which is provided with a variable polarizer of which rotation is unnecessary instead of a rotary analyzer to measure the residual stress in high resolution and at high speed.There is provided an apparatus for measuring a residual stress of an optical fiber including a light generation unit that generates light; a lens unit that converts the generated light into collimated light; a polarization unit including variable polarization devices that divide the collimated light into two perpendicularly polarized light beams and control phase retardation of the polarized light beams by means of an electrical signal; a measurement unit that allows the divided light beams of two polarization states to penetrate an optical fiber to be measured; and a light detection unit that detects the polarization states of the light beams penetrating the optical fiber.

Abstract translation: 本发明涉及一种用于测量光纤的残余应力的装置。 更具体地，本发明涉及一种用于测量光纤的残余应力的装置，该装置设置有不需要旋转的可变偏振器，而不是旋转分析器来以高分辨率和高速度测量残余应力。 提供了一种用于测量包括产生光的光产生单元的光纤的残余应力的装置; 将所生成的光转换为准直光的透镜单元; 偏振单元，其包括将准直光分成两个垂直偏振光束并通过电信号控制偏振光束的相位延迟的可变偏振器件; 测量单元，其允许具有两个偏振态的分束光束穿透待测量的光纤; 以及光检测单元，其检测穿透光纤的光束的偏振状态。

公开(公告)号：US06647162B2

公开(公告)日：2003-11-11

申请号：US09803873

申请日：2001-03-13

Applicant: Dug-Young Kim ,  Yong-Woo Park ,  Un-Chul Paek ,  Mun-Hyun Do

Inventor： Dug-Young Kim ,  Yong-Woo Park ,  Un-Chul Paek ,  Mun-Hyun Do

IPC: G01N2100

CPC classification number: G01L1/242 ,  G01L5/0047

Abstract: Disclosed is an apparatus for measuring a residual stress and a photoelastic effect of an optical fiber, which includes: a light source; a rotary type optical diffuser distanced from the light source in a predetermined distance for suppressing the spatial coherence of a light radiated in the light source; an optical condenser for condensing the radiated light passed through the optical diffuser into a spot where the optical fiber is located; a polarizer for polarizing the light passed through the optical condenser into a 45° linear polarized light from an axis of the optical fiber; a polarization analyzer, installed at 90° angle with respect to the polariscope and attached closely with the optical fiber, to prevent the penetration by the background image of the optical fiber; an optical fiber strain unit including a strain sensor for straining the optical fiber on the polarization analyzer toward a longitudinal direction and measuring the strain on the optical fiber; an object lens for magnifying the image of the light penetrated through the optical fiber; and a charge coupled device (CCD) array for measuring the penetration variation of the optical fiber caused from the strain caused by the optical fiber strain unit over the optical fiber.

Abstract translation: 公开了一种用于测量光纤的残余应力和光弹性效应的装置，其包括：光源; 旋转型光学扩散器，其以预定距离从光源远离，以抑制在光源中照射的光的空间相干性; 用于将通过光漫射器的辐射光聚光到光纤所在的光点的光学冷凝器; 用于将通过所述光学冷凝器的光偏振成从所述光纤的轴线成45°线偏振光的偏振器; 极化分析仪，相对于偏振器安装在90°角并与光纤紧密连接，以防止光纤的背景图像穿透; 光纤应变单元，包括：应变传感器，用于使所述偏振分析仪上的光纤向纵向拉伸;测量所述光纤上的应变; 用于放大穿过光纤的光的图像的物镜; 以及用于测量由光纤应变单元在光纤上引起的应变引起的光纤的穿透变化的电荷耦合器件（CCD）阵列。

公开(公告)号：US06373564B1

公开(公告)日：2002-04-16

申请号：US09838022

申请日：2001-04-19

Applicant: Yong-Woo Park ,  Dug-Young Kim ,  Un-Chul Paek

Inventor： Yong-Woo Park ,  Dug-Young Kim ,  Un-Chul Paek

IPC: G01N2100

CPC classification number: G01M11/37

Abstract: The present invention relates generally to an image tracking device in an optical communication system, and in particular, to a device and method for measuring the transverse characteristics, including the refractive index or residual stress of an optical fiber or a fiber preform.

Abstract translation: 本发明一般涉及光通信系统中的图像跟踪装置，特别涉及用于测量包括光纤或纤维预制棒的折射率或残余应力的横向特性的装置和方法。

公开(公告)号：US20090095911A1

公开(公告)日：2009-04-16

申请号：US12252313

申请日：2008-10-15

Applicant: Dug Young KIM ,  Sucbei Moon ,  Dongsoo Lee

Inventor： Dug Young KIM ,  Sucbei Moon ,  Dongsoo Lee

IPC: G01T1/20

CPC classification number: G01N21/6408

Abstract: Disclosed is an apparatus for measuring a fluorescence lifetime. The apparatus for measuring the fluorescence lifetime comprises an excitation light generator that generates excitation light to be irradiated on a sample including fluorescence molecules; a fluorescence photon collecting unit that collects a plurality of fluorescence photons generated by irradiating the excitation light on the sample; a light sensor that converts the collected fluorescence photons into a fluorescence electrical signal; and a fluorescence lifetime signal processor that determines the fluorescence lifetime by calculating the average time of the fluorescence electrical signal with respect to a predetermined apparatus delay time. According to the above configuration, the present invention can accurately and precisely measure a fluorescence lifetime in a short measurement time by easy calculation.

Abstract translation: 公开了一种用于测量荧光寿命的装置。 用于测量荧光寿命的装置包括激发光发生器，其产生要照射在包含荧光分子的样品上的激发光; 荧光光子收集单元，其收集通过将样品上的激发光照射而产生的多个荧光光子; 将所收集的荧光光子转换成荧光电信号的光传感器; 以及荧光寿命信号处理器，其通过相对于预定的设备延迟时间计算荧光电信号的平均时间来确定荧光寿命。 根据上述结构，本发明能够通过容易的计算在短的测定时间内精确而准确地测定荧光寿命。

公开(公告)号：US08064064B2

公开(公告)日：2011-11-22

申请号：US12370581

申请日：2009-02-12

Applicant: Dug Young Kim ,  Seung Bum Cho

Inventor： Dug Young Kim ,  Seung Bum Cho

IPC: G01J3/45

CPC classification number: G01N21/65 ,  G01J3/44 ,  G01N2021/653

Abstract: Disclosed is an apparatus and method for obtaining images using coherent anti-stokes Raman scattering. The apparatus for obtaining images using coherent anti-stokes Raman scattering according to the present invention comprises: a pump light source and a stokes light source that irradiate pump light and stokes light on a sample to generate anti-stokes light having anti-stokes frequency; a reference light source that generates reference light; and an image obtaining unit that obtains the images of the sample using a change in phase of the reference light due to a change in the refractive index of the sample in the vicinity of the anti-stokes frequency. Thereby, the present invention can provide the apparatus for obtaining images using coherent anti-stokes Raman scattering that is not affected by a non-resonant background signal phenomenon, strong resistance against noise even in a weak signal, and has excellent sensitivity and resolution.

Abstract translation: 公开了一种使用相干反斯托克斯拉曼散射获得图像的装置和方法。 根据本发明的使用相干反斯托克斯拉曼散射获得图像的装置包括：泵浦光源和斯托克斯光源，其照射泵浦光并将光束照射在样品上以产生具有反斯托克斯频率的反斯托克斯光; 产生参考光的参考光源; 以及图像获取单元，其由于在反斯托克斯频率附近的样品的折射率的变化而使用参考光的相位变化来获得样本的图像。 因此，本发明可以提供使用不受非谐振背景信号现象影响的相干反斯托克斯拉曼散射获得图像的装置，即使在弱信号中也具有很强的抵抗噪声，并且具有优异的灵敏度和分辨率。

公开(公告)号：US20090180103A1

公开(公告)日：2009-07-16

申请号：US12350786

申请日：2009-01-08

Applicant: Dug Young KIM ,  In Hee Shin ,  Dong Ju Lee

Inventor： Dug Young KIM ,  In Hee Shin ,  Dong Ju Lee

IPC: G01N21/00

CPC classification number: G01M11/37 ,  G01L5/0047

Abstract: The present invention relates to an apparatus for measuring a residual stress of an optical fiber. More particularly, the present invention relates to an apparatus for measuring residual stress of an optical fiber which is provided with a variable polarizer of which rotation is unnecessary instead of a rotary analyzer to measure the residual stress in high resolution and at high speed.There is provided an apparatus for measuring a residual stress of an optical fiber including a light generation unit that generates light; a lens unit that converts the generated light into collimated light; a polarization unit including variable polarization devices that divide the collimated light into two vertically polarized light beams and control phase retardation of the polarized light beams by means of an electrical signal; a measurement unit that allows the divided light beams of two polarization states to penetrate an optical fiber to be measured; and a light detection unit that detects the polarization states of the light beams penetrating the optical fiber.

Abstract translation: 本发明涉及一种用于测量光纤的残余应力的装置。 更具体地，本发明涉及一种用于测量光纤的残余应力的装置，该装置设置有不需要旋转的可变偏振器，而不是旋转分析器来以高分辨率和高速度测量残余应力。 提供了一种用于测量包括产生光的光产生单元的光纤的残余应力的装置; 将所生成的光转换为准直光的透镜单元; 偏振单元，包括可变偏振器件，其将准直光分为两个垂直偏振光束，并通过电信号控制偏振光束的相位延迟; 测量单元，其允许具有两个偏振态的分束光束穿透待测量的光纤; 以及光检测单元，其检测穿透光纤的光束的偏振状态。

公开(公告)号：US06813959B2

公开(公告)日：2004-11-09

申请号：US10434490

申请日：2003-05-08

Applicant: Dug-Young Kim ,  Yong-Woo Park ,  Un-Chul Paek ,  Mun-Hyun Do

Inventor： Dug-Young Kim ,  Yong-Woo Park ,  Un-Chul Paek ,  Mun-Hyun Do

IPC: G01L124

CPC classification number: G01L1/242 ,  G01L5/0047

Abstract: Disclosed is an apparatus for measuring a residual stress and a photoelastic effect of an optical fiber, which includes: a light source; a rotary type optical diffuser distanced from the light source in a predetermined distance for suppressing the spatial coherence of a light radiated in the light source; an optical condenser for condensing the radiated light passed through the optical diffuser into a spot where the optical fiber is located; a polarizer for polarizing the light passed through the optical condenser into a 45° linear polarized light from an axis of the optical fiber; a polarization analyzer, installed at 90° angle with respect to the polariscope and attached closely with the optical fiber, to prevent the penetration by the background image of the optical fiber; an optical fiber strain unit including a strain sensor for straining the optical fiber on the polarization analyzer toward a longitudinal direction and measuring the strain on the optical fiber; an object lens for magnifying the image of the light penetrated through the optical fiber; and a charge coupled device(CCD) array for measuring the penetration variation of the optical fiber caused from the strain caused by the optical fiber strain unit over the optical fiber.

公开(公告)号：US07679038B2

公开(公告)日：2010-03-16

申请号：US12350809

申请日：2009-01-08

Applicant: Dug Young Kim ,  Ji Yong Lee

Inventor： Dug Young Kim ,  Ji Yong Lee

IPC: G02B7/04

CPC classification number: G02B21/0092 ,  G02B21/14

Abstract: An optical phase microscope using rotating-¼ wavelength plate with pinhole in the center position and Fourier transformed lens is provided. The optical phase microscope comprises an optical image generator that acquires images for a specimen to be observed, an object plane onto which light beams of the images acquired from the optical image generator are projected, a first transform lens that performs primary Fourier transformation on the light beams passing through the object plane, a ¼ wavelength plate with pinhole at the center position that is positioned to be spaced by a focal distance of the first transform lens from the first transform lens, a secondary transform lens that performs secondary Fourier transformation on the light beams passing through the ¼ wavelength plate, and a phase image generator including a photo detector on which the images of the light beams subjected to the secondary Fourier transformation is focused.

Abstract translation: 提供了一种光学相位显微镜，其中心位置具有针孔旋转1/4波长板和傅里叶变换透镜。 光学相位显微镜包括光学图像生成器，其获取要观察的样本的图像，投射从光学图像生成器获取的图像的光束投射到的物平面;对光进行主傅立叶变换的第一变换透镜 通过物平面的光束，在中心位置处的针孔的1/4波片，其被定位成与第一变换透镜的焦距相隔离第一变换透镜;二次变换透镜，对光进行二次傅里叶变换 通过1/4波长板的光束，以及包括光电检测器的相位图像发生器，其上聚焦进行二次傅里叶变换的光束的图像。

公开(公告)号：US20090184240A1

公开(公告)日：2009-07-23

申请号：US12350809

申请日：2009-01-08

Applicant: Dug Young KIM ,  Ji Yong Lee

Inventor： Dug Young KIM ,  Ji Yong Lee

IPC: G02B21/36

CPC classification number: G02B21/0092 ,  G02B21/14

Abstract: The present invention relates to a polariscopic phase microscope that can precisely observe a specimen, and more specifically, to a polariscopic phase microscope that can observe a structure and change of a physiological cell by using a phase contrast of light passing through components of the physiological cell. There is provided a polariscopic phase microscope according to the present invention comprising: an optical image generator that acquires images for a specimen to be observed; an object plane onto which light beams of the images acquired from the optical image generator are projected; a first transform lens that performs primary Fourier transformation on the light beams passing through the object plane; a λ/4 wavelength plate that is positioned to be spaced by a focal distance of the first transform lens from the first transform lens; a secondary transform lens that performs secondary Fourier transformation on the light beams passing through the λ/4 wavelength plate; and a phase image generator including a photo detector on which the images of the light beams subjected to the secondary Fourier transformation is focused.The present invention has an effect that can observe the structure and motion of the physiological cell by acquiring the quantitative phase information of the biological specimen such as the physiological cell.

Abstract translation: 本发明涉及一种可以精确观察样本的偏光相显微镜，更具体地说，涉及通过使用穿过生理细胞的组分的光的相位对比观察生理细胞的结构和变化的偏光相显微镜 。 提供根据本发明的偏光相位显微镜，包括：光学图像生成器，其获取待观察的样本的图像; 投影从光学图像生成器获取的图像的光束的物平面; 对通过物平面的光束进行主傅立叶变换的第一变换透镜; λ/ 4波长板，定位成与第一变换透镜的焦距距离第一变换透镜; 对通过λ/ 4波长板的光束进行二次傅里叶变换的次级变换透镜; 以及相关图像发生器，其包括光电检测器，其上进行二级傅里叶变换的光束的图像被聚焦。 本发明通过获取诸如生理细胞的生物样本的定量相位信息，可以观察生理细胞的结构和运动。