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公开(公告)号：US20100157311A1
公开(公告)日：2010-06-24
申请号：US12733174
申请日：2008-08-01
IPC分类号： G01B11/02
CPC分类号： G01N21/4795 , A61B3/102 , A61B3/1025
摘要： Such an optical image measurement device is provided that is capable of acquiring a clear image even when the intensity of an interference light is low. A fundus oculi observation device 1 is configured to superimpose a signal light LS propagated through a fundus oculi Ef and a reference light LR propagated through a reference mirror 174 to generate an interference light LC, detect the interference light LC, and form an image of the fundus oculi Ef. The device 1 determines whether the intensity of a detection signal of the interference light LC is equal to or more than a predetermined threshold and, when determines that the intensity is less than the predetermined threshold, controls to increase the intensity of the detection signal of the interference light LC. The device 1 forms an image of the fundus oculi Ef based on the detection signal with the increased intensity.
摘要翻译： 提供这样的光学图像测量装置，即使当干涉光的强度低时也能够获得清晰的图像。 眼底观察装置1被配置为叠加通过眼底Ef传播的信号光LS和通过参考反射镜174传播的参考光LR，以产生干涉光LC，检测干涉光LC，并形成图像 眼底眼 设备1确定干涉光LC的检测信号的强度是否等于或大于预定阈值，并且当确定强度小于预定阈值时，控制增加检测信号的强度 干涉光LC。 装置1基于具有增加的强度的检测信号形成眼底Ef的图像。
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公开(公告)号：US20080239240A1
公开(公告)日：2008-10-02
申请号：US12055693
申请日：2008-03-26
IPC分类号： A61B3/12
CPC分类号： G01B9/02044 , A61B3/102 , G01B9/0203 , G01B9/02077 , G01B9/02091 , G01B2290/65 , G01N21/4795
摘要： An optical image measurement device has: an interference-light generator configured to generate an interference light by splitting a low-coherence light into a signal light and a reference light and superimposing the signal light having passed through an eye and the reference light having passed through a reference object; a detector configured to detect the generated interference light; and a scanner configured to scan a projection position of the signal light on the eye, and the optical image measurement device is configured to form an image of the eye based on a result of detection by the detector. The optical image measurement device comprises a projector configured to project fixation information for fixing the eye onto a fundus oculi of the eye when the scanner scans with the signal light.
摘要翻译： 光学图像测量装置具有：干涉光发生器，被配置为通过将低相干光分解为信号光和参考光来产生干涉光，并叠加已经穿过眼睛的信号光和已经穿过的参考光 参考对象; 检测器，被配置为检测所产生的干涉光; 以及扫描器，被配置为扫描眼睛上的信号光的投影位置，并且光学图像测量装置被配置为基于检测器的检测结果来形成眼睛的图像。 光学图像测量装置包括：投影仪，配置成当扫描仪用信号光扫描时，将固定信息投影到眼睛的眼底上。
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公开(公告)号：US20060077395A1
公开(公告)日：2006-04-13
申请号：US11246394
申请日：2005-10-11
申请人： Kinpui Chan , Masahiro Akiba , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
发明人： Kinpui Chan , Masahiro Akiba , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
IPC分类号： G01B11/02
CPC分类号： G01B9/02007 , G01B9/02003 , G01B9/02014 , G01B9/02027 , G01B9/02044 , G01B9/02069 , G01B9/02091 , G01B11/2441 , G01B2290/45 , G01B2290/65 , G01B2290/70
摘要： Provided is an optical image measuring apparatus forming a three-dimensional image based on tomographic images of an object, acquired at various depths even when the object moves during measurement. Including a half mirror (6) for dividing a light beam signal light (S) and reference light (R), a frequency shifter (8), a reference mirror (9) and a piezoelectric element (9A) used to change an optical path length of the reference light (R), CCDs (21, 22) for receiving interference light beams (L) resulting from interference light produced by superimposing the signal light (S) and the reference light (R) on each other by the half mirror (6) and outputting detection signals, an image forming portion for forming tomographic images based on the detection signals, a measurement depth calculating means (53), and an image processing portion (57). Forming a three-dimensional image or the like based on the arranged tomographic images.
摘要翻译： 提供一种光学图像测量装置，其即使在测量期间物体移动时，也可以基于在各种深度获取的物体的断层图像形成三维图像。 包括用于分割光束信号光（S）和参考光（R）的半反射镜（6），用于改变光学器件的变频器（8），参考反射镜（9）和压电元件（9A） 参考光（R）的路径长度，用于接收由将信号光（S）和参考光（R）叠加在一起而产生的干涉光所产生的干涉光（L）的CCD（21,22） 反射镜（6）并输出检测信号，基于检测信号形成断层图像的图像形成部分，测量深度计算装置（53）和图像处理部分（57）。 基于排列的断层图像形成三维图像等。
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公开(公告)号：US07604351B2
公开(公告)日：2009-10-20
申请号：US12055954
申请日：2008-03-26
IPC分类号： A61B3/14
CPC分类号： G01B9/0203 , A61B3/102 , G01B9/02044 , G01B9/02067 , G01B9/02091 , G01B2290/65 , G01N21/4795
摘要： An optical image measurement device comprises: an interference-light generator configured to generate an interference light by splitting a low-coherence light into a signal light and a reference light and superimposing the signal light having passed through an eye and the reference light having passed through a reference object; a detector configured to detect the generated interference light; a calculator configured to obtain intensity distribution of the interference light in the eye, based on a result of the detection by the detector; a determining part configured to determine a projection position of the signal light to the eye, based on the obtained intensity distribution; and an image forming part configured to form an image of the eye, based on a result of detection of a new interference light based on a new signal light projected toward the determined projection position and a new reference light having passed through the reference object.
摘要翻译： 光学图像测量装置包括：干涉光发生器，被配置为通过将低相干光分解成信号光和参考光来产生干涉光，并叠加已经通过眼睛的信号光和已经穿过的参考光 参考对象; 检测器，被配置为检测所产生的干涉光; 配置为基于检测器的检测结果获得眼睛中的干涉光的强度分布的计算器; 确定部件，被配置为基于获得的强度分布来确定信号光对眼睛的投影位置; 以及基于对所确定的投影位置投射的新的信号光的新的干涉光的检测结果和通过所述参照对象的新的基准光，构成为形成所述眼睛的图像的图像形成部。
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公开(公告)号：US07492466B2
公开(公告)日：2009-02-17
申请号：US11246394
申请日：2005-10-11
申请人： Kinpui Chan , Masahiro Akiba , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
发明人： Kinpui Chan , Masahiro Akiba , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
IPC分类号： G01B11/02
CPC分类号： G01B9/02007 , G01B9/02003 , G01B9/02014 , G01B9/02027 , G01B9/02044 , G01B9/02069 , G01B9/02091 , G01B11/2441 , G01B2290/45 , G01B2290/65 , G01B2290/70
摘要： Provided is an optical image measuring apparatus forming a three-dimensional image based on tomographic images of an object, acquired at various depths even when the object moves during measurement. Including a half mirror (6) for dividing a light beam signal light (S) and reference light (R), a frequency shifter (8), a reference mirror (9) and a piezoelectric element (9A) used to change an optical path length of the reference light (R), CCDs (21, 22) for receiving interference light beams (L) resulting from interference light produced by superimposing the signal light (S) and the reference light (R) on each other by the half mirror (6) and outputting detection signals, an image forming portion for forming tomographic images based on the detection signals, a measurement depth calculating means (53), and an image processing portion (57). Forming a three-dimensional image or the like based on the arranged tomographic images.
摘要翻译： 提供一种光学图像测量装置，其即使在测量期间物体移动时，也可以基于在各种深度获取的物体的断层图像形成三维图像。 包括用于分割光束信号光（S）和参考光（R）的半反射镜（6），用于改变光路的变频器（8），参考反射镜（9）和压电元件（9A） 参考光（R）的长度，用于接收由半反射镜将信号光（S）和参考光（R）彼此叠加而产生的干涉光所产生的干涉光束（L）的CCD（21,22） （6）并输出检测信号，基于检测信号形成断层图像的图像形成部分，测量深度计算装置（53）和图像处理部分（57）。 基于排列的断层图像形成三维图像等。
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公开(公告)号：US07372578B2
公开(公告)日：2008-05-13
申请号：US11223928
申请日：2005-09-13
申请人： Masahiro Akiba , Kinpui Chan , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
发明人： Masahiro Akiba , Kinpui Chan , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
IPC分类号： G02B9/02
CPC分类号： G01B9/02014 , G01B9/02003 , G01B9/02027 , G01B9/02069 , G01B9/02091 , G01B11/2441 , G01B2290/45 , G01B2290/70
摘要： Provided is an optical image measuring apparatus capable of effectively receiving interference light, particularly an alternating current component thereof using a smaller number of photo sensors. The optical image measuring apparatus includes a polarizing plate for converting a light beam from a broad-band light source to linearly polarized light, a half mirror for dividing the light beam into signal light and reference light, a piezoelectric element for vibrating a reference mirror, a wavelength plate for converting the reference light to circularly polarized light, a polarization beam splitter for extracting two different polarized light components from interference light produced from the signal light and the reference light which are superimposed on each other by the half mirror, CCDs for detecting the two different polarized light components, and a signal processing portion for producing an image of an object to be measured based on the detected polarized light components. A frequency for intensity modulation of the light beam is synchronized with a beat frequency of the interference light. A frequency of vibration of the reference mirror is synchronized with the beat frequency of the interference light and an amplitude of vibration thereof is set to be equal to or smaller than a wavelength of the interference light.
摘要翻译： 提供一种光学图像测量装置，其能够使用较少数量的光传感器有效地接收干涉光，特别是其交流分量。 该光学图像测量装置包括用于将来自宽带光源的光束转换为线偏振光的偏振片，用于将光束分成信号光的半反射镜和参考光，用于振动参考反射镜的压电元件， 用于将参考光转换成圆偏振光的波长板，用于从由半反射镜彼此叠加的信号光和参考光产生的干涉光中提取两种不同的偏振光分量的偏振分束器，用于检测的CCD 两个不同的偏振光分量，以及用于基于检测到的偏振光分量产生待测物体的图像的信号处理部分。 光束的强度调制频率与干涉光的拍频同步。 参考反射镜的振动频率与干涉光的拍频同步，其振动振幅被设定为等于或小于干涉光的波长。
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公开(公告)号：US20060055939A1
公开(公告)日：2006-03-16
申请号：US11223928
申请日：2005-09-13
申请人： Masahiro Akiba , Kinpui Chan , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
发明人： Masahiro Akiba , Kinpui Chan , Yasufumi Fukuma , Hiroyuki Otsuka , Hisashi Tsukada , Kazuhiko Yumikake
IPC分类号： G01B11/02
CPC分类号： G01B9/02014 , G01B9/02003 , G01B9/02027 , G01B9/02069 , G01B9/02091 , G01B11/2441 , G01B2290/45 , G01B2290/70
摘要： Provided is an optical image measuring apparatus capable of effectively receiving interference light, particularly an alternating current component thereof using a smaller number of photo sensors. The optical image measuring apparatus includes a polarizing plate for converting a light beam from a broad-band light source to linearly polarized light, a half mirror for dividing the light beam into signal light and reference light, a piezoelectric element for vibrating a reference mirror, a wavelength plate for converting the reference light to circularly polarized light, a polarization beam splitter for extracting two different polarized light components from interference light produced from the signal light and the reference light which are superimposed on each other by the half mirror, CCDs for detecting the two different polarized light components, and a signal processing portion for producing an image of an object to be measured based on the detected polarized light components. A frequency for intensity modulation of the light beam is synchronized with a beat frequency of the interference light. A frequency of vibration of the reference mirror is synchronized with the beat frequency of the interference light and an amplitude of vibration thereof is set to be equal to or smaller than a wavelength of the interference light.
摘要翻译： 提供一种光学图像测量装置，其能够使用较少数量的光传感器有效地接收干涉光，特别是其交流分量。 该光学图像测量装置包括用于将来自宽带光源的光束转换为线偏振光的偏振片，用于将光束分成信号光的半反射镜和参考光，用于振动参考反射镜的压电元件， 用于将参考光转换成圆偏振光的波长板，用于从由半反射镜彼此叠加的信号光和参考光产生的干涉光中提取两种不同的偏振光分量的偏振分束器，用于检测的CCD 两个不同的偏振光分量，以及用于基于检测到的偏振光分量产生待测物体的图像的信号处理部分。 光束的强度调制频率与干涉光的拍频同步。 参考反射镜的振动频率与干涉光的拍频同步，其振动振幅被设定为等于或小于干涉光的波长。
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公开(公告)号：US20080151256A1
公开(公告)日：2008-06-26
申请号：US11961195
申请日：2007-12-20
IPC分类号： G01B11/02
CPC分类号： G01B9/02068 , A61B3/10 , A61B3/102 , A61B3/12 , G01B9/0203 , G01B9/02044 , G01B9/02064 , G01B9/02089 , G01B9/02091 , G01B2290/65
摘要： An optical image measurement device comprises: a light source configured to emit a low-coherence light; an interference-light generator configured to generate an interference light, by splitting the low-coherence light into a signal light and a reference light, and superimposing the signal light passed through a measurement object and the reference light passed through a reference object; a changer configured to change a difference in optical path length; a detector configured to detect the interference light; an image forming part configured to form an image of the measurement object within a predetermined frame based on the result of the detection; an analyzer configured to analyze the image, and specify a position of the image within the frame; and a controller configured to control the changer based on the specified position to change the difference so that an image newly formed is placed in a predetermined position within the frame.
摘要翻译： 光学图像测量装置包括：被配置为发射低相干光的光源; 干涉光发生器，被配置为通过将低相干光分解为信号光和参考光来产生干涉光，并且叠加通过测量对象的信号光和通过参考对象的参考光; 更换器，被配置为改变光路长度的差异; 检测器，被配置为检测干涉光; 图像形成部，被配置为基于检测结果在预定帧内形成测量对象的图像; 分析器，其被配置为分析所述图像，并且指定所述图像在所述帧内的位置; 以及控制器，其被配置为基于所述指定位置来控制所述更换器以改变所述差异，使得新形成的图像被放置在所述帧内的预定位置。
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公开(公告)号：US20080151260A1
公开(公告)日：2008-06-26
申请号：US11962196
申请日：2007-12-21
IPC分类号： G01B9/02
CPC分类号： G01B9/02067 , A61B3/102 , G01B9/0203 , G01B9/02044 , G01B9/02064 , G01B9/02089 , G01B9/02091 , G01N21/4795
摘要： A fundus oculi observation device acts as an optical image measurement device capable of measuring an OCT image such as a tomographic image of a fundus oculi, or the like, and is configured so as to calculate the signal level of the formed OCT image, determine whether the signal level exceeds a threshold value, and change the position of a reference mirror so that the signal level is determined to exceed the threshold value.
摘要翻译： 眼底观察装置作为能够测量诸如眼底断层图像等OCT图像的光学图像测量装置，并且被配置为计算形成的OCT图像的信号电平，确定是否 信号电平超过阈值，并且改变参考镜的位置，使得信号电平被确定为超过阈值。
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公开(公告)号：US07777893B2
公开(公告)日：2010-08-17
申请号：US11962196
申请日：2007-12-21
IPC分类号： G01B11/02
CPC分类号： G01B9/02067 , A61B3/102 , G01B9/0203 , G01B9/02044 , G01B9/02064 , G01B9/02089 , G01B9/02091 , G01N21/4795
摘要： A fundus oculi observation device acts as an optical image measurement device capable of measuring an OCT image such as a tomographic image of a fundus oculi, or the like, and is configured so as to calculate the signal level of the formed OCT image, determine whether the signal level exceeds a threshold value, and change the position of a reference mirror so that the signal level is determined to exceed the threshold value.
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