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公开(公告)号：US4542295A
公开(公告)日：1985-09-17
申请号：US537111
申请日：1983-09-29
Applicant: David R. Mattson , Patrick J. Coffey
Inventor： David R. Mattson , Patrick J. Coffey
CPC classification number: G01J3/02 , G01J1/42 , G01J3/0289 , G01J3/2803 , G01J3/453 , H01L25/042 , H01L31/035281 , H01L2924/0002 , Y02E10/50
Abstract: A Fourier transform infrared spectrometer utilizes a selectable area infrared detector to optimize performance of the instrument depending upon the nature of the sample being analyzed. The detector includes an inner detecting segment and one or more outer detecting segments which extend at least partially around the inner segment and are electrically isolated therefrom. In those cases where a small area detector provides optimal sensitivity and performance, only the inner detecting segment is enabled to contribute to the output of the detector. In those cases where a larger area detector provides optimal sensitivity and performance, one or more of the outer detecting segments are enabled to contribute to the output of the detector, either alone or in combination with the inner segment. Thus, a single detector in the instrument provides optimal sensitivity and performance for a wide range of applications.
Abstract translation: 傅里叶变换红外光谱仪利用可选择的区域红外检测器来优化仪器的性能，这取决于被分析样品的性质。 检测器包括内部检测段和一个或多个外部检测段，其至少部分地围绕内部区段延伸并且与其隔离。 在小面积检测器提供最佳灵敏度和性能的情况下，只有内部检测段能够对检测器的输出作出贡献。 在较大面积检测器提供最佳灵敏度和性能的情况下，一个或多个外部检测段能够独立地或与内部部分组合地贡献于检测器的输出。 因此，仪器中的单个检测器为广泛的应用提供了最佳的灵敏度和性能。
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公开(公告)号：US4480914A
公开(公告)日：1984-11-06
申请号：US417819
申请日：1982-09-13
Applicant: Duane T. Thompson , Edwin L. Karas , Ernest F. Root , Fredrik Schlyter
Inventor： Duane T. Thompson , Edwin L. Karas , Ernest F. Root , Fredrik Schlyter
CPC classification number: G02B26/08 , G01J3/4535
Abstract: An interferometer mirror drive system compensates for velocity and tilt errors induced by ambient vibration, as well as providing long-term automatic alignment of the mirrors. A uniquely configured .lambda./8-thick step on the fixed mirror of the interferometer introduces a 90-degree phase shift in one of two reference light beams, to produce quadrature signals which characterize the relative motion between the fixed and the driven mirrors. An electronic circuit extracts velocity and tilt data from the quadrature signals and develops error signals indicative of deviations from the desired coordinates of the moving mirror. The error signals are used to generate a set of control signals which in turn are supplied to an arrangement of drive coils attached to the moving mirror, to restore the mirror to the desired coordinates.
Abstract translation: 干涉仪镜驱动系统补偿由环境振动引起的速度和倾斜误差，以及提供镜子的长期自动对准。 在干涉仪的固定镜上独特配置的λ/ 8厚台阶在两个参考光束之一中引入90度相移，以产生表征固定和被驱动反射镜之间的相对运动的正交信号。 电子电路从正交信号中提取速度和倾斜数据，并产生指示与移动镜的期望坐标的偏差的误差信号。 误差信号用于产生一组控制信号，这些控制信号又被提供给附接到移动镜的驱动线圈的布置，以将镜恢复到期望的坐标。
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公开(公告)号：US4391525A
公开(公告)日：1983-07-05
申请号：US83315
申请日：1979-10-10
Applicant: Robert A. Woodruff
Inventor： Robert A. Woodruff
CPC classification number: G01J3/4535 , G01B9/02018 , G01B9/02058 , G01B2290/15
Abstract: An interferometer having beamsplitting and reflective coatings on the same surface of a beamsplitter member. The fixed length path of the interferometer includes a compensator matched to the beamsplitter member, a Cat's Eye Retroreflector, the reflective coating and a retro-mirror. The variable length path of the interferometer includes a moving coil mirror, a movable Cat's Eye Retroreflector and the retro-mirror.
Abstract translation: 一种在分束器构件的相同表面上具有分束和反射涂层的干涉仪。 干涉仪的固定长度路径包括与分束器构件匹配的补偿器，猫眼后视镜，反射涂层和后视镜。 干涉仪的可变长度路径包括移动线圈镜，可移动的猫眼后视镜和后视镜。
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公开(公告)号：US4278351A
公开(公告)日：1981-07-14
申请号：US37560
申请日：1979-05-09
Applicant: James B. Breckinridge , Robert H. Norton , Rudolf A. Schindler , Robert A. Frosch
Inventor： James B. Breckinridge , Robert H. Norton , Rudolf A. Schindler , Robert A. Frosch
CPC classification number: G01J3/453
Abstract: A high resolution interferometer is provided which is insensitive to slight misalignment of its elements, avoids channeling in the spectrum, generates a maximum equal path fringe contrast, produces an even two-sided interferogram without critical matching of the wedge angles of the beamsplitter and compensator wedges, and is optically phase tunable. The interferometer includes a mirror along the path of each beam component produced by the beamsplitter, for reflecting the beam component from the beamsplitter to a corresponding retroreflector and for reflecting the beam returned by the retroreflector back to the beamsplitter. The fact that the mirror "covers" the retroreflector, so that the mirror reflects the beam component before and after it reaches the retroreflector, results in the system being insensitive to slight tilting of the mirror. A wedge located along each beam component path, is large enough to "cover" the retroreflector, so that each beam component passes through the wedge during movement towards the retroreflector and away therefrom, to assure that all portions of a beam component pass through the same thickness of glass of the wedge.
Abstract translation: 提供了一种高分辨率干涉仪，对其元素的轻微偏移不敏感，避免了光谱中的通道，产生最大相等的路径条纹对比度，产生均匀的双面干涉图，而不会对分束器和补偿器楔块的楔角进行临界匹配 ，并且是光学相位可调谐的。 干涉仪包括沿分束器产生的每个光束分量的路径的反射镜，用于将来自分束器的光束分量反射到相应的后向反射器，并将由后向反射器返回的光束反射回分光镜。 反射镜“覆盖”后向反射器的事实，使得反射镜在其到达后向反射器之前和之后反射光束分量，导致系统对镜的轻微倾斜不敏感。 沿着每个光束分量路径定位的楔形物足够大以“覆盖”后向反射器，使得每个光束分量在朝向后向反射器移动并远离反射器的过程中穿过楔形物，以确保光束分量的所有部分通过相同 楔形玻璃的厚度。
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公开(公告)号：US4181440A
公开(公告)日：1980-01-01
申请号：US858596
申请日：1977-12-08
Applicant: Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch , Rudolf A. Schindler
Inventor： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch , Rudolf A. Schindler
CPC classification number: G01J3/453
Abstract: An over-under double-pass interferometer in which the beamsplitter area and thickness can be reduced to conform only with optical flatness considerations is achieved by offsetting the optical center line of one cat's-eye retroreflector relative to the optical center line of the other in order that one split beam be folded into a plane distinct from the other folded split beam. The beamsplitter is made transparent in one area for a first folded beam to be passed to a mirror for doubling back and is made totally reflective in another area for the second folded beam to be reflected to a mirror for doubling back. The two beams thus doubled back are combined in the central, beam-splitting area of the beamsplitter and passed to a detector. This makes the beamsplitter insensitive to minimum-thickness requirements and selection of material.
Abstract translation: 通过使一个猫眼后向反射器的光学中心线相对于另一个的光学中心线相对顺序地偏移，可以实现分束器面积和厚度可以减小以符合光学平面度考虑的超欠下双通道干涉仪 一个分裂的光束被折叠成与另一个折叠的分束不同的平面。 分束器在一个区域中被制成透明的，用于第一折叠光束以被传递到用于加倍的反射镜，并且在另一区域中被制成完全反射，以使第二折叠光束被反射到用于加倍的反射镜。 因此将两倍的光束组合在分束器的中心分束区域中并传递到检测器。 这使得分光器对最小厚度要求和材料选择不敏感。
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Patent Agency Ranking
公开(公告)号：US4179219A
公开(公告)日：1979-12-18
申请号：US894675
申请日：1978-04-10
Applicant: Stanley T. Smith
Inventor： Stanley T. Smith
CPC classification number: G01J3/453
Abstract: A spectral scan by using a rotating spiralling toroidal mirror. The scan is made of a light beam from a source. A beamsplitter divides the beam into two components. One component is reflected off of a fixed mirror back to the beamsplitter. The second component is reflected off of the spiralling toroidal mirror back to the beamsplitter. As the mirror rotates, the pathlength constantly changes producing an interference pattern for all wavelengths within the range of the instrument.
Abstract translation: 通过使用旋转的螺旋环形镜进行光谱扫描。 扫描由源的光束构成。 分束器将光束分成两部分。 一个组件从固定镜反射回分束器。 第二个组件从螺旋形环形镜反射回分束器。 当镜子旋转时，光程长度不断变化，会对仪器范围内的所有波长产生干涉图案。
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公开(公告)号：US4165938A
公开(公告)日：1979-08-28
申请号：US808951
申请日：1977-06-22
Applicant: Walter M. Doyle
Inventor： Walter M. Doyle
CPC classification number: G01J3/4537
Abstract: An interferometer is disclosed, preferably of the Michelson type, in which the reflectors associated with the interferometer arms are stationary, and scanning is accomplished by motion of a wedge-shaped refractive element in one of the arms, the orientation of the refractive element and its direction of motion being in specific mathematically derived directions which minimize the translatory displacement of the transmitted optical beam.
Abstract translation: 公开了优选为迈克尔逊型的干涉仪，其中与干涉仪臂相关联的反射器是静止的，并且通过楔形折射元件在其中一个臂中的运动来实现扫描，折射元件的取向及其 运动方向在特定的数学导出方向上，使得透射光束的平移位移最小化。
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148.发明授权Apparatus for providing a servo drive signal in a high-speed stepping interferometer 失效在高速步进干扰仪中提供伺服驱动信号的装置
公开(公告)号：US4132940A
公开(公告)日：1979-01-02
申请号：US804035
申请日：1977-06-06
Applicant: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Rudolf A. Schindler
Inventor： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Rudolf A. Schindler
CPC classification number: G01J3/4535
Abstract: In infrared spectroscopy utilizing an interferometer, position stepping of the optical path difference in the interferometer must be accomplished quite rapidly in response to a drive signal applied to a moveable mirror in the interferometer which is proportional to the offset distance desired from the previous null point. As the mirror moves in response to this drive signal, effectively getting closer to the new null point, the drive signal is gradually reduced, in response to detected reference laser fringes. At the new null position, the drive signal will effectively be zero. A binary up/down counter drives a digital/analog converter (DAC). The output from the DAC is supplied to the mirror moving means. The fringes generated by a reference laser are detected as the mirror moves, causing the up/down counter to be decremented to its null count, thereby reducing the output of the DAC, as the mirror moves towards its new null position. Undesirable movement of the mirror due to vibration or other sources causes the up/down counter to be incremented away from its null count, thereby causing a correcting drive signal to be applied to the mirror moving means that is proportional to the distance of movement.
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公开(公告)号：US3897154A
公开(公告)日：1975-07-29
申请号：US41623373
申请日：1973-11-15
Applicant: HAWES ROLAND C
Inventor： HAWES ROLAND C
CPC classification number: G01J3/453 , G01N21/274 , G01N21/85 , G01N30/74
Abstract: Apparatus and process provide qualitative and quantitative analysis of sample constituent(s) in a fluid, relatively free from qualitative ambiguities and quantitative zero displacements due to slowly changing contamination in the measurement stream. Slowly changing zero displacement in the stream is cancelled out by the taking of continuous measurements at two points along the stream and continuously manipulating the two measurements as by subtraction.
Abstract translation: 设备和过程提供了流体中样品组分的定性和定量分析，相对没有定性歧义和定量的零位移，由于测量流中的污染物的缓慢变化。 通过在沿着流的两个点处进行连续测量来消除流中缓慢变化的零位移，并通过减法连续地操纵两个测量。
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公开(公告)号：US3849001A
公开(公告)日：1974-11-19
申请号：US26345472
申请日：1972-06-16
Applicant: HITACHI LTD
Inventor： AKITOMO N , MATSUMOTO K , ISHIKAWA M , INOUE M , KANEKO T
CPC classification number: G01J3/4537
Abstract: A polarization interference correlation spectrometer comprising a first polarizer for polarizing a sample beam, a Soleil compensator for producing an appropriate optical path difference between the paths of the two orthogonal polarization components of the sample beam polarized by said first polarizer, a second polarizer for synthesizing the two orthogonal polarization components accompanied with said optical path difference and generating interference, and a photoelectric transducer for deriving said interference as a modulated electric signal.
Abstract translation: 一种偏振干涉相关光谱仪，包括用于使样品光束偏振的第一偏振片，用于产生由所述第一偏振片偏振的样品光束的两个正交偏振分量的路径之间的适当光程差的Soleil补偿器， 两个正交偏振分量伴随着所述光程差并产生干涉，以及一个光电转换器，用于导出所述干扰作为调制电信号。
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