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公开(公告)号：US5999256A
公开(公告)日：1999-12-07
申请号：US55122
申请日：1998-04-03
CPC分类号： G01N15/1434
摘要： A method for particle size detection comprises passing particles in a fluid medium relative to a light source which generates a light field the optical axis of which is transverse to the direction of fluid movement relative to the said light source and having a plurality of non-interferometrically formed variations in intensity spaced along the direction of movement of the particles relative to the light field, detecting variations in light intensity caused by the particles as they pass through the variations in the light field, and measuring the size of a detected particle substantially independently of the optical characteristics of the particle by plotting the mean peak signal as a function of the normalised peak-to-trough variation in the output pulses generated by the passages of the particle through the light field.
摘要翻译： 用于粒度检测的方法包括使流体介质中的颗粒相对于光源传播，该光源产生光场，该光场的光轴相对于所述光源横向于流体移动方向，并且具有多个非干涉测量 形成沿粒子相对于光场的运动方向间隔开的强度的变化，检测当粒子通过光场的变化时由粒子引起的光强度的变化，以及基本上独立于 通过将平均峰值信号绘制为由通过光场的粒子的通道产生的输出脉冲中的标准化峰 - 谷变化的函数的平均峰值信号。
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公开(公告)号：US07057723B2
公开(公告)日：2006-06-06
申请号：US10433859
申请日：2001-12-18
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/0229 , G01J3/0294 , G01J3/04 , G01J3/18 , G01J3/2803 , G07D7/1205
摘要： An optical detection device for validating bank notes has several input apertures, an imagine device (12), a diffraction grating (15.1, 15.2, 15.3) associated with each input aperture (11.1, 11.2, 11.3) and a detection array (17). The diffraction grating (15.1, 15.2, 15.3) is rotated at angle of e.g. 45 degrees relative to the orientation of the linear detection array (17). This arrangement enables the spectra of multiple points to be measured simultaneously. The angle of rotation, the pitch of the apertures (11.1, 11.2, 11.3) and a pitch of the diffraction grating (15.1, 15.2, 15.3) are selected in such a way that the spectra of said multiple points are contiguously mapped onto the detection array (17) having a single linear array of color sensitive detection pixels. The axis of the linear array is offset with respect to an optical axis (7) of the optical detection device.
摘要翻译： 用于验证纸币的光学检测装置具有若干输入孔，与每个输入孔（11.1,11.2,11.3）和检测阵列（17）相关联的想象装置（12），衍射光栅（15.1,15.2,15.3）。 衍射光栅（15.1,15.2,15.3）以例如角度旋转。 相对于线性检测阵列（17）的取向为45度。 这种布置使得能够同时测量多个点的光谱。 选择旋转角度，孔径（11.1,11.2,11.3）的间距和衍射光栅（15.1,15.2,15.3）的间距，使得所述多个点的光谱被连续映射到检测器 阵列（17）具有彩色敏感检测像素的单个线性阵列。 线性阵列的轴相对于光学检测装置的光轴（7）偏移。
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公开(公告)号：US06836333B1
公开(公告)日：2004-12-28
申请号：US10031948
申请日：2002-06-21
IPC分类号： G01B902
CPC分类号： G01J3/453
摘要： The invention concerns an interferometric optical block for Fourier Transform spectrometers having three planar nominally parallel surfaces with the two outer surfaces adapted to act as beam reflectors for internal light and the third surface in operation acting as a beam splitter and beam combiner, the optical block having an input portion by means of which an input beam of light to be analysed can be input so as partially to pass through said third surface to be internally reflected by one of said outer reflectors, and partially to be reflected by said third surface so as then to be internally reflected by the other of said outer reflectors whereby light internally reflected by said outer reflectors is combined at said third surface to produce an exit beam, and wherein said outer surfaces have an inclination with respect to one another so as to make a variation in path lengths in the light forming the exit beam so as to generate an interference fringe field.
摘要翻译： 本发明涉及一种用于傅里叶变换光谱仪的干涉光学块，其具有三个平面名义上平行的表面，其两个外表面适于充当用于内部光的射束反射器，并且第三表面在操作中用作分束器和光束组合器，该光学块具有 输入部分，通过该输入部分可以输入待分析的输入光束，以便部分地穿过所述第三表面以由所述外部反射器中的一个反射，并且部分地被所述第三表面反射，从而 由所述外部反射器中的另一个内部反射，由此由所述外部反射器内部反射的光在所述第三表面处组合以产生出射光束，并且其中所述外表面相对于彼此具有倾斜度，以使其变化 在形成出射光束的光的路径长度上，以产生干涉条纹场。
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