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公开(公告)号：US4193693A
公开(公告)日：1980-03-18
申请号：US880729
申请日：1978-02-24
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: G01J3/4535
Abstract: A velocity servo for a continuous scan Fourier interference spectrometer of the double-pass retroreflector type having two "cat's eye" retroreflectors uses an open-loop, lead-screw drive system for one retroreflector with compensation for any variations in speed of drive of the lead screw provided by sensing any variation in the rate of reference laser fringes, and producing an error signal from such variation used to compensate by energizing a moving-coil actuator for the other retroreflector optical path, and energizing (through a highpass filter) piezoelectric actuators for the secondary mirrors of the retroreflectors.
Abstract translation: 具有两只“猫眼”逆向反射器的双路后向反射器类型的连续扫描傅立叶干涉光谱仪的速度伺服系统使用一个用于一个后向反射器的开环式导螺杆驱动系统，可补偿导线的驱动速度的任何变化 通过感测参考激光条纹速率的任何变化提供的螺钉，并且从这种变化产生误差信号，用于通过激励用于另一个后向反射器光路的运动线圈致动器来补偿，并激励（通过高通滤波器）压电致动器 后向反射器的次视镜。
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公开(公告)号：US3936193A
公开(公告)日：1976-02-03
申请号：US442254
申请日：1974-02-13
Applicant: Gerald L. Auth
Inventor： Gerald L. Auth
CPC classification number: G01J3/4535
Abstract: An interferometer for analyzing electromagnetic frequency spectra including a movable mirror supported on two air bearings such that the center of support of the bearings continuously coincides with the center of gravity of the movable mirror during the motion of the mirror. The air bearings engage two parallel, spaced apart lateral rods that maintain the optical alignment of the mirror. To facilitate making spectral measurements, the interferometer also incorporates a laser for producing monochromatic light that is directed through a primary beam splitter to provide a periodic fringe pattern as the mirror moves and a white light directed through a secondary beam splitter to provide a reproducible reference point.
Abstract translation: 一种用于分析电磁频谱的干涉仪，包括支撑在两个空气轴承上的可移动反射镜，使得在反射镜运动期间轴承的支撑中心与可移动反射镜的重心连续重合。 空气轴承接合保持反射镜的光学对准的两个平行的间隔开的横向杆。 为了进行光谱测量，干涉仪还包括用于产生单色光的激光，其被引导通过主分束器，以在反射镜移动时提供周期性条纹图案，并且引导通过次分光镜的白光以提供可再现的参考点 。
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公开(公告)号：US3501683A
公开(公告)日：1970-03-17
申请号：US3501683D
申请日：1967-05-17
Applicant: WEBB JAMES E , NASA
Inventor： MORECROFT JOHN H
CPC classification number: G01J3/4535 , G05D3/183
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公开(公告)号：US20240319010A1
公开(公告)日：2024-09-26
申请号：US18186906
申请日：2023-03-20
Applicant: THERMO ELECTRON SCIENTIFIC INSTRUMENTS LLC
Inventor： John Iverson , Garry Ritter , Pete Knudtson , Eric Schwartz
CPC classification number: G01J3/4535 , G01J3/06 , G01J2003/064 , G01J2003/4538
Abstract: Interfering internal beams can be used to generate an internal reference interferogram. This interferogram can be used to compensate for changes in FTIR instrument performance in response to variable environmental conditions or other instrument variations. Acquisition of such internal interferograms can be done during, after, or prior to acquisition of actual sample data.
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公开(公告)号：US11874172B2
公开(公告)日：2024-01-16
申请号：US17675125
申请日：2022-02-18
Applicant: SHIMADZU CORPORATION
Inventor： Hideaki Katsu , Hiromasa Maruno
CPC classification number: G01J3/4535 , G01J3/021 , G01J3/0202 , G01N21/35
Abstract: A Fourier transform infrared spectrophotometer includes a main interferometer, a control interferometer, an infrared detector, a control light detector, a waveplate, and a support member. The waveplate is disposed on an optical path of a control light beam and between a fixed mirror or a moving mirror and a beam splitter. The support member supports the waveplate. An outer perimeter of the waveplate includes a supported region supported by the support member and a released region spaced apart from the support member.
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Patent Agency Ranking
公开(公告)号：US20190011357A1
公开(公告)日：2019-01-10
申请号：US16028531
申请日：2018-07-06
Applicant: SHIMADZU CORPORATION
Inventor： Daijiro Kato , Shinya Wakuda
CPC classification number: G01N21/35 , G01J3/28 , G01J3/45 , G01J3/4535 , G01J2003/4538 , G01N2021/3595
Abstract: The Fourier transform infrared spectrophotometer includes: a light source 11 for generating infrared light having a wavelength width including an absorption wavelength of a compound to be analyzed; an interferometer including a fixed mirror 15 and a movable mirror 16, for generating interfering light from the infrared light; a detector 25 for generating a voltage with a magnitude corresponding to the intensity of the interfering light, and for outputting a voltage obtained by subtracting, from the aforementioned voltage, a voltage with a predetermined magnitude; a high-pass filter 464 for allowing the passage of frequency components equal to or higher than a predetermined frequency in an output voltage from the detector 25; an amplifier 463 for amplifying an output voltage from the high-pass filter 464 by a predetermined multiplying factor; and an analogue-to-digital converter 27 for converting an output voltage from the amplifier 463 into a digital signal.
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公开(公告)号：US20180195853A1
公开(公告)日：2018-07-12
申请号：US15741558
申请日：2015-07-10
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Yoshihisa WARASHINA , Tomofumi SUZUKI , Kohei KASAMORI , Ryosuke OKUMURA , Kyosuke KOTANI
IPC: G01B9/02
CPC classification number: G01B9/02049 , G01B9/02015 , G01B9/02027 , G01B9/02051 , G01J3/0205 , G01J3/021 , G01J3/0262 , G01J3/45 , G01J3/453 , G01J3/4535
Abstract: An optical interferometer includes a branching-combining unit, a first optical system, a second optical system, and a drive unit, which can be MEMS-based components. The branching-combining unit includes a branching surface, an incident surface, an output surface, and a combining surface on an interface between the interior and the exterior of a transparent member. The branching-combining unit, on the branching surface, partially reflects incident light and outputs as first branched light, and transmits the rest of the incident light into the interior as second branched light. The branching-combining unit, on the combining surface, outputs the first branched light to the outside, reflects the second branched light, and combines the light beams to be output to the outside as combined light.
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公开(公告)号：US20180149465A1
公开(公告)日：2018-05-31
申请号：US15657385
申请日：2017-07-24
Applicant: Jongmin LEE , Juno LEE , Jaehwan LEE , Hyowook BAE
Inventor： Jongmin LEE , Juno LEE , Jaehwan LEE , Hyowook BAE
CPC classification number: G01B9/02051 , G01J3/0286 , G01J3/06 , G01J3/4535 , G01N21/35 , G01N2021/3595
Abstract: The present invention relates to a housing of a Michelson interferometer that may facilitate optical alignment of a plurality of optical components by applying a two-part structured housing to the Michelson interferometer. The present invention may provide a Michelson interferometer housing system including a first housing including a first surface on which a fixed mirror is installed, a second surface perpendicular to the first surface, and a first diagonal surface on which a beam splitter assembly to which light is incident from the outside is installed, the first diagonal surface being formed at 45 degrees with respect to the second surface; and a second housing including a third surface on which a movable mirror is installed, a fourth surface perpendicular to the third surface, and a second diagonal surface corresponding to the first diagonal surface, wherein the first and second housings are combined such that the first and second diagonal surfaces face each other to allow the light entering from the outside to be divided through the beam splitter assembly and incident to the fixed mirror and the movable mirror.
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公开(公告)号：US20180112964A1
公开(公告)日：2018-04-26
申请号：US15334533
申请日：2016-10-26
Inventor： James Hannigan , William Mankin
IPC: G01B9/02
CPC classification number: G01B9/02015 , G01B9/02043 , G01J3/0202 , G01J3/4535 , G01N2021/1795 , G01N2021/3595 , G01N2201/0214
Abstract: An interferometer (10) is provided that has a stage (28) configured to have a linear motion path. A first retroreflector (18) and a second retroreflector (24) are fixedly coupled to the stage (28). A tube (32) is provided, and the stage (28) is configured to reciprocate about the tube (32). A beamsplitter (14) and a 45° mirror (16) are disposed in the tube (32). A detector (22) is configured to detect light passing through the beamsplitter (14), and the beamsplitter (14) is configured to split an incident light beam into a transmitted beam (15) and a reflected beam (17), wherein the transmitted beam (15) passes to the second retroreflector (24) and the reflected beam (17) passes to the first retroreflector (18). The transmitted beam (15) and a reflected beam (17) are focused on the detector (22).
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公开(公告)号：US09952031B1
公开(公告)日：2018-04-24
申请号：US15334533
申请日：2016-10-26
Inventor： James Hannigan , William Mankin
CPC classification number: G01B9/02015 , G01B9/02043 , G01J3/0202 , G01J3/4535 , G01N2021/1795 , G01N2021/3595 , G01N2201/0214
Abstract: An interferometer (10) is provided that has a stage (28) configured to have a linear motion path. A first retroreflector (18) and a second retroreflector (24) are fixedly coupled to the stage (28). A tube (32) is provided, and the stage (28) is configured to reciprocate about the tube (32). A beamsplitter (14) and a 45° mirror (16) are disposed in the tube (32). A detector (22) is configured to detect light passing through the beamsplitter (14), and the beamsplitter (14) is configured to split an incident light beam into a transmitted beam (15) and a reflected beam (17), wherein the transmitted beam (15) passes to the second retroreflector (24) and the reflected beam (17) passes to the first retroreflector (18). The transmitted beam (15) and a reflected beam (17) are focused on the detector (22).
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