公开(公告)号：US5949480A

公开(公告)日：1999-09-07

申请号：US806129

申请日：1997-03-03

Applicant: Grant R. Gerhart ,  Roy M. Matchko

Inventor： Grant R. Gerhart ,  Roy M. Matchko

IPC: G01J3/28 ,  G01J3/447 ,  H04N5/76

CPC classification number: G01J3/2823 ,  G01J3/447

Abstract: A method for obtaining spectral radiation data for points in a field of view utilizes a broad band variable filter to produce different intensity distributions on a photocell array. The array is in the focal plane of a camera and photocell locations correspond to points in the field of view. The variable filter has a sequence of optical train elements comprised of a first linear polarizer, a body of optically active material, a retarder and a second linear polarizer. A series of radiance measurements are taken at each photocell of the array and at least one of the optical train components is repositioned between measurements. For each photocell, a collection of photocell values is stored in a computer memory and is converted to a system of linear equations. Intensities for spectral components of light incident thereon are derived for each photocell. The method can be used to create a two-dimensional intensity map for the pixel array for each wavelength measured. Also, the method can be used to create a broad band spectroradiometer for points in the field of view.

Abstract translation: 用于获得视野中的点的光谱辐射数据的方法利用宽带可变滤波器在光电池阵列上产生不同的强度分布。 该阵列位于相机的焦平面中，光电池位置对应于视场中的点。 可变滤波器具有由第一线性偏振器，光学活性材料体，延迟器和第二线性偏振器组成的光学序列元件的序列。 在阵列的每个光电池处进行一系列辐射测量，并且至少一个光学组件在测量之间重新定位。 对于每个光电池，光电池值的集合存储在计算机存储器中并被转换为线性方程组。 对于每个光电池导出入射到其上的光的光谱分量的强度。 该方法可用于为每个测量波长的像素阵列创建二维强度图。 此外，该方法可用于为视场中的点创建宽带光谱辐射计。

公开(公告)号：US5841538A

公开(公告)日：1998-11-24

申请号：US677785

申请日：1996-07-10

Applicant: Daniel Schoeffler ,  Howard Stern ,  Pat V. Costa

Inventor： Daniel Schoeffler ,  Howard Stern ,  Pat V. Costa

IPC: B64D15/20 ,  B64F5/00 ,  G01J3/447 ,  G01J4/00 ,  G01N21/21 ,  G01N21/88 ,  G08B19/02

CPC classification number: G08B19/02 ,  B64D15/20 ,  B64F5/0054 ,  G01J4/00 ,  G01N21/21 ,  G01N21/88 ,  G01N2021/8848

Abstract: An apparatus for detecting a polarization altering substance, such as ice, on a surface includes a polarizing filter on the surface between the surface and the polarization altering substance. When the polarizing filter includes alternating regions having orthogonal polarizing properties, only one viewing of the surface through a blocking filter is required. When light, either polarized or unpolarized, reflects off the surface, it passes through the polarizing filter and becomes polarized. Reflected light that additionally passes through ice after leaving the polarizer becomes unpolarized. When viewed through a blocking polarizer filter, polarized light passing through ice appears bright due to the unpolarizing effect of ice. On the other hand, polarized light not passing through ice retains its polarization and appears dark when viewed through a blocking filter. Since the polarizing filter is between the surface and the viewer, the surface can be metallic, dielectric, or painted without affecting the results. If the proper blocking orientation for the viewer is not known in advance, the Stokes coefficients can be calculated if views are taken through a series of specified polarizing filters. The ratio of polarized light returned to the viewer compared to the unpolarized light returned to the viewer can then be calculated from any arbitrary position. A retroreflective substance on the surface further enhances the effect for systems employing an active illumination source located coaxially with or adjacent to the imaging system.

公开(公告)号：US5781293A

公开(公告)日：1998-07-14

申请号：US586671

申请日：1996-04-17

Applicant: John Miles Padgett ,  Alan James Duncan ,  Wilson Sibbett ,  Andrew Robert Harvey

Inventor： John Miles Padgett ,  Alan James Duncan ,  Wilson Sibbett ,  Andrew Robert Harvey

IPC: G01J3/447 ,  G01J3/453 ,  G01B9/02

CPC classification number: G01J3/447 ,  G01J3/4531

Abstract: A Fourier-transform spectrometer contains a birefringent optical component, removing the need for a Michelson interferometer used in conventional instruments. A suitable birefringent element such as a Wollaston prism, is used to introduce a path difference between two light polarisations. Use of an extended light source so that all areas of the birefringent component are illuminated simultaneously ensures that different positions on the birefringent component correspond to different path differences between the two polarisations. A Fourier-transform of the resulting interferogram at the detector results in the spectral distribution of the input light being obtained. The use of an extended light source permits a Fourier-transform spectrometer with no moving parts to be achieved.

Abstract translation: PCT No.PCT / GB94 / 01499 Sec。 371日期：1996年4月17日 102（e）日期1996年4月17日PCT 1994年7月11日PCT公布。 公开号WO95 / 02171 日期1995年1月19日傅立叶变换光谱仪包含双折射光学部件，不需要用于传统仪器中的迈克尔逊干涉仪。 使用诸如Wollaston棱镜的合适的双折射元件来引入两个光极化之间的路径差异。 使用扩展光源使得双折射元件的所有区域同时被照亮，确保双折射元件上的不同位置对应于两个极化之间的不同路径差异。 在检测器处的​​所得干涉图的傅立叶变换导致所获得的输入光的光谱分布。 使用扩展光源允许不具有移动部件的傅里叶变换光谱仪。

公开(公告)号：US5706212A

公开(公告)日：1998-01-06

申请号：US618820

申请日：1996-03-20

Applicant: Daniel W. Thompson ,  Blaine D. Johs

Inventor： Daniel W. Thompson ,  Blaine D. Johs

IPC: G01J3/28 ,  G01J4/00 ,  G01N21/21 ,  G01J3/447

CPC classification number: G01J4/00 ,  G01N21/211 ,  G01J2003/2866

Abstract: A sample system investigation system, such as an ellipsometer or polarimeter system, for use in investigating sample systems with electromagnetic wavelengths in the infrared range, and a calibration method for compensating nonidealities in multi-dimensional system rotated and non-rotated component representing matricies, are disclosed. An essentially achromatic compensator of dual-rhomb construction, which introduces a (3*LAMBDA/4) phase shift, but essentially no deviation in the direction of propagation of a polarized beam of electromagnetic wavelengths caused to pass therethrough, even when said compensator is caused to continuously rotate, is also disclosed.

Abstract translation: 用于调查具有红外范围的电磁波长的样本系统的示波系统调查系统，例如椭偏仪或偏振计系统，以及用于补偿代表矩阵的多维系统旋转和非旋转分量中的非理想性的校准方法。 披露 基本上是双菱形结构的消色差补偿器，其引入（3 * LAMBDA / 4）相移，但是即使当所述补偿器被引起时，也引起通过其的电磁波长的偏振光束的传播方向基本上没有偏差 连续旋转，也被公开。

公开(公告)号：US5657121A

公开(公告)日：1997-08-12

申请号：US543277

申请日：1995-10-16

Applicant: Shigeki Nishina

Inventor： Shigeki Nishina

IPC: G01J3/18 ,  G01J3/447 ,  G02B5/30 ,  G02B27/28 ,  G01J3/32

CPC classification number: G02B5/3083 ,  G01J3/18 ,  G01J3/447 ,  G01J3/0224

Abstract: A spectrum measuring device for measuring optical spectrum of input light includes first and second double-image elements which separate input light to be measured into two polarized wave components having respective planes of polarization perpendicularly intersecting each other and having different optical axes, a third double-image element which separates the two polarized wave components from the first and second double-image elements into four polarized wave components each two of which having respective planes of polarization perpendicularly intersecting each other and having different optical axes, a dispersing element which is irradiated by the four polarized wave components from the third double-image element in which the dispersing element separates optical components of each wavelength contained in the four polarized wave components at the same angle of separation, and a photodetector for measuring an overall intensity of the four polarized wave components of the same wavelength separated by the dispersing element.

Abstract translation: 用于测量输入光的光谱的光谱测量装置包括将要测量的输入光分离为具有彼此垂直相交且具有不同光轴的偏振平面的两个偏振波分量的第一和第二双像元件， 图像元件，其将两个偏振波分量与第一和第二双像元件分离成四个偏振波分量，每个偏振波分量各自具有彼此垂直相交且具有不同光轴的偏振平面;由 其中分散元件以相同的分离角度分离四个偏振波分量中包含的每个波长的光学分量的第三双像元素的四个偏振波分量，以及用于测量四个偏振波分量的总体强度的光电检测器 相同的波浪 由分散元件分隔开。

公开(公告)号：US4995724A

公开(公告)日：1991-02-26

申请号：US393805

申请日：1989-08-14

Applicant: Yoji Sonobe ,  Takao Tanimoto

Inventor： Yoji Sonobe ,  Takao Tanimoto

IPC: G01J1/16 ,  G01J3/28 ,  G01J3/447 ,  G01J4/00

CPC classification number: G01J3/28 ,  G01J4/00 ,  G01J1/1626 ,  G01J3/447

Abstract: A spectroscope device of the dispersion type receives light to be measured and emits it as dispersed light which corresponds to each of wavelengths to be measured. An optical-path switching device directs the dispersed light emitted from the spectroscope device to pass through first and second paths. A first photoelectric converter receives the light which is directed to pass through the first path by the optical-path switching device. A polarizing/separating device polarizes and separates the light, which is directed to pass through the second path by the optical-path switching device, into two polarized lights. Second and third photoelectric converters respectively receive the two polarized lights divided by the polarizing/separating device. An arithmetical process section corrects a first optical spectrum strength according to an output from the first photoelectric converter with at least a ratio of second and third optical spectrum strengths which correspond to outputs from the second and third photoelectric converter to calculate absolute spectrum values of the measured light at every wavelength of the light to be measured.

公开(公告)号：US4699512A

公开(公告)日：1987-10-13

申请号：US754925

申请日：1985-07-15

Applicant: Hiroyuki Koshi

Inventor： Hiroyuki Koshi

IPC: G01J3/447 ,  G01N21/64

CPC classification number: G01N21/6445

Abstract: This invention relates to a device for measuring fluorescence polarization, which permits to measure the degree of fluorescence polarization in a short time and also its variations in time.In order to achieve this object, a device for measuring fluorescence polarization according to this invention is provided with a control means permitting to set arbitrarily the polarization angle of the polarizer and that of the analyzer, by means of which the polarization angle of the polarizer or the analyzer is successively varied to arbitrary values so as to obtain polarization angles and fluorescence intensities corresponding thereto so that the degree of fluorescence polarization is obtained by using a plurality of the polarization angles and the fluorescence intensities corresponding thereto.

Abstract translation: 本发明涉及一种用于测量荧光偏振的装置，其允许在短时间内测量荧光偏振度以及其时间上的变化。 为了实现该目的，根据本发明的用于测量荧光偏振的装置设置有允许任意设定偏振器的偏振角和分析器的偏振角的控制装置，通过该偏振器偏振角偏振角 分析仪依次变化为任意值，以获得与其对应的偏振角和荧光强度，从而通过使用多个偏振角和与其对应的荧光强度来获得荧光偏振度。

公开(公告)号：US12228710B1

公开(公告)日：2025-02-18

申请号：US18719222

申请日：2022-11-16

Applicant: THE INSTITUTE OF OPTICS AND ELECTRONICS, THE CHINESE ACADEMY OF SCIENCES

Inventor： Xiangang Luo ,  Mingbo Pu ,  Ting Xie ,  Fei Zhang ,  Xiaoliang Ma

IPC: G02B13/06 ,  G01J3/02 ,  G01J3/447 ,  G02B1/00 ,  G02B13/14

Abstract: An ultra-wide angle broadband polarization imaging system based on a metasurface, and a detection apparatus, the imaging system comprising a first lens (L1) having negative optical power, a linear polarizer (P1), a quarter wave plate (P2), a diaphragm (STO), a second lens (L2) having positive optical power, a third lens (L3) having positive optical power, and the metasurface (M), wherein an object side surface and an image side surface of the lens are planar or spherical; and the phase distribution required for the system in a broadband spectrum band is achieved by setting different rotation angles θ of a unit structure of the metasurface.

公开(公告)号：US12135277B1

公开(公告)日：2024-11-05

申请号：US18656937

申请日：2024-05-07

Applicant: Hefei Institutes of Physical Science, CAS

Inventor： Congming Dai ,  Wenqing Xu ,  Jie Zhan ,  Shuai Li ,  Gang Xu ,  Rui Wang

IPC: G01N21/21 ,  G01N21/25 ,  G01N21/27 ,  G01N21/3581 ,  G01J3/02 ,  G01J3/447 ,  G01J4/00 ,  G01N21/47

Abstract: Provided are a cooperative polarization skylight background radiation measurement device and method, belonging to the field of polarized radiation remote sensing. The device includes a measurement probe, a lower computer control system, a two-dimensional turntable, a base and data transmission interface, as well as an upper computer. The method includes the following steps: the cooperative skylight background radiation polarization measurement device is initialized, a polarization wheel is returned to a zero position, and dark noise is collected by a double-path spectrometer; then a measurement mode is selected for measurement; and finally, spectral polarization data of each wave band acquired by the double-path spectrometer and a division-of-focal plane polarization camera is transmitted to the upper computer through a data line, original spectral light intensity data is calculated according to a measurement principle, and finally a degree of polarization and an azimuth angle of polarization are obtained.

公开(公告)号：US12135240B2

公开(公告)日：2024-11-05

申请号：US17778842

申请日：2020-12-06

Applicant: Purdue Research Foundation

Inventor： Zubin Jacob ,  Fanglin Bao ,  Xueji Wang

IPC: G01J3/28 ,  G01J3/00 ,  G01J3/10 ,  G01J3/447 ,  G01J4/00 ,  G01J4/04 ,  G01J5/00 ,  G01J5/48 ,  G01J5/59 ,  G01N21/21 ,  G01N21/25 ,  G01N21/35 ,  G06F18/22 ,  G06V10/143 ,  G06V10/30 ,  G06V10/40 ,  G06V10/54 ,  G06V10/75

Abstract: Summary: The invention relates to a temperature sensor, full-A magnetic element (3) that has at least one magnetic Layer (1), its magnetic properties depend on the temperature characterized in that—The magnetic layer (1) has a vortex-shaped magnetization distribution with a magnetic vortex core (2) has, wherein the vortex-shaped magnetization distribution is formed in a layer plane and the vortex core (2) is formed perpendicular to the layer plane,—An excitation unit (15) which is used to excite the vortex-shaped Magnetization distribution to a gyrotropic magnetization motion is provided,—A detection unit (16) for detecting a resonance frequency the gyrotropic magnetization movement is provided and—An evaluation unit (19) for determining a temperature from the resonance frequency of the gyrotropic magnetization movement is provided.