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1.发明授权Acousto-optic tunable filter apparatus and method for detecting and identifying an optical radiation source. 失效用于检测和识别光辐射源的声光可调滤波器装置和方法。
公开(公告)号：US5111038A
公开(公告)日：1992-05-05
申请号：US654170
申请日：1991-02-12
CPC分类号： G01J1/42 , G01S7/4802 , G01S7/499
摘要： A source of broad-band and/or narrow band optical radiation is detected and identified by apparatus including a pair of acousto-optical tunable filters which diffract from orthogonally polarized components of the optical radiation, a diffracted ordinary polarized beam and diffracted extraordinary beam, respectively. Undiffracted polarized radiation from the two AOTFs is combined and directed to a first detector which may comprise a small array such as a quadrant array. The diffracted ordinary and extraordinary polarized beams are directed to a second detector which is preferably a single large imaging array. A signal processor uses signals from the first detector generated by the undiffracted beams to detect the presence of the source, and polarized spectral signals from the large imaging array to identify the source of the radiation . A control unit generates radio frequency signals which can be rapidly varied in frequency to control wavelength of the polarized beams diffracted by the AOTFs. These radio frequency (rf) signals may be applied simultaneously, with or without amplitude modulation, or sequentially, to the AOTFs, and may be of the same or different frequencies. The rf drive may be withheld from the AOTFs to maximize the undiffracted beams for maximum range detection.
摘要翻译： 宽带和/或窄带光辐射源由包括一对声光可调谐滤波器的装置检测和识别，该对声光可调滤波器分别从光辐射的正交极化分量衍射，衍射普通偏振光束和衍射非寻常光束 。 来自两个AOTF的非衍射偏振辐射被组合并引导到第一检测器，其可以包括诸如象限阵列的小阵列。 衍射的普通和非常偏振光束被引导到第二检测器，其优选地是单个大的成像阵列。 信号处理器使用由未衍射光束产生的第一检测器的信号来检测源的存在，以及来自大成像阵列的偏振光谱信号以识别辐射源。 控制单元生成频率快速变化的射频信号，以控制由AOTF衍射的偏振光束的波长。 这些射频（RF）信号可以同时或不伴随幅度调制或顺序施加到AOTF，并且可以具有相同或不同的频率。 可以从AOTF中保留rf驱动器，以最大化未扩散的光束以进行最大范围检测。
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公开(公告)号：US5264957A
公开(公告)日：1993-11-23
申请号：US908111
申请日：1992-07-02
CPC分类号： G02B5/04 , G01J3/1256 , G02F1/33 , G02F2203/22
摘要： The optical device can examine a spectrum at low resolution and subsequently choose a portion of that spectrum to be examined at higher resolution, using a single detector array for both spectra. The latter spectrum can be chosen to be arbitrarily anywhere within the low resolution spectrum. The device comprises a source of input light, a wedged shaped dispersive device, a first reflective mirror, a second reflective mirror, a RF generator connected to the dispersive device, and a detector array. In operation, the dispersive device provides a low dispersion spectrum in the zero order light when the source of light is impinged upon it. When the RF generator is turned on, a second spectrum which is diffracted is obtained. This will be the high resolution spectrum. By operating near 100% diffraction efficiency, it is possible to switch from one spectrum to the other. By adjusting the RF frequency the band center of the high resolution spectrum can be varied to fall anywhere within the low resolution spectrum. Since the two spectra will not normally physically fall in the same place, the zero order spectrum is reflected by a first mirror onto the detector array and the diffracted spectrum is reflected by a second mirror on to the detector array so that the two spectra overlay and fall in the same detector array.
摘要翻译： 光学器件可以以低分辨率检查光谱，然后使用两个光谱的单个检测器阵列选择要以更高分辨率检查的该光谱的一部分。 后一种光谱可以选择为低分辨率光谱内的任意位置。 该装置包括输入光源，楔形分散装置，第一反射镜，第二反射镜，连接到分散装置的RF发生器和检测器阵列。 在操作中，当光源撞击它时，色散装置在零级光中提供低色散谱。 当RF发生器接通时，获得衍射的第二个光谱。 这将是高分辨率光谱。 通过操作近100％的衍射效率，可以从一个光谱切换到另一个光谱。 通过调整RF频率，高分辨率频谱的频带中心可以变化到低分辨率频谱内的任何地方。 由于两个光谱通常不会物理上落在相同的位置，所以零阶光谱被第一反射镜反射到检测器阵列上，并且衍射光谱被第二反射镜反射到检测器阵列上，使得两个光谱重叠和 落在相同的检测器阵列中。
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3.依法登记的发明Method and apparatus for increasing the angular aperture of an acousto-optic device 失效用于增加声光器件的角孔径的方法和装置
公开(公告)号：USH884H
公开(公告)日：1991-02-05
申请号：US469801
申请日：1990-01-22
IPC分类号： G02F1/33
CPC分类号： G02F1/33
摘要： A method and apparatus for increasing the angular aperture of an acousto-optic device employing an acoustic zone plate positioned on an acoustic input face of an acousto-optic device. The angular spread of acoustic energy within the acousto-optic device is increased over the angular spread obtainable with a single transducer of the same length; thus providing an increased angular aperture for the resultant acousto-optic device.
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4.发明授权Tl.sub.3 PSe.sub.4 compound, single crystals, and acousto-optical devices 失效Tl {hd 3 {b PSe {hd 4 {b化合物，单晶和声光器件
公开(公告)号：US3994569A
公开(公告)日：1976-11-30
申请号：US614718
申请日：1975-09-17
CPC分类号： G02F1/11 , C01B25/00 , C30B11/00 , C30B29/46 , H01S3/1068
摘要： The compound Tl.sub.3 PSe.sub.4 is disclosed. Non-conducting single crystals of the compound are prepared which have outstanding acousto-optical properties including an exceptionally high acousto-optical figure of merit. The crystals are used in various acousto-optical devices including a display device, a laser modulator, a non-collinear acousto-optical filter, and an acoustic delay line.
摘要翻译： 公开了化合物T13PSe4。 制备化合物的非导电单晶，其具有优异的声光性质，包括特别高的声光学品质因数。 该晶体用于包括显示装置，激光调制器，非共线声光滤波器和声延迟线的各种声光装置中。
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公开(公告)号：US4490845A
公开(公告)日：1984-12-25
申请号：US345123
申请日：1982-02-02
CPC分类号： G01J3/1256 , G01J3/42 , G01N21/3504
摘要： An automated acousto-optic tunable filter infrared analyzer system useable in a variety of industrial and commercial control applications. The system relies upon a narrow band pass tunable acousto-optic filter which is selectively tuned by predetermined rf frequency signals to selectively transmit the narrow band pass of interest which corresponds to a specific molecular species for identification and analysis. The system includes a microcomputer and associated memory function to measure and compare detected signals from an infrared detector which converts the filtered infrared signal to an electrical signal. The memory provides control signals for the computer and for controlling the sequence and frequency of rf energy applied to tune the filter. In this way, the near to mid range infrared can be analyzed for absorption bands corresponding to predetermined molecular species such as combustion product gases, and a feedback signal generated to control the combustion process.
摘要翻译： 一种可用于各种工业和商业控制应用的自动声光可调滤波器红外分析仪系统。 系统依赖于窄带通可调谐声光滤波器，其通过预定的频率信号选择性地调谐，以选择性地发送对应于特定分子种类的感兴趣的窄带通道用于识别和分析。 该系统包括微型计算机和相关联的记忆功能，用于测量和比较来自红外检测器的检测信号，将红外信号转换成电信号。 存储器为计算机提供控制信号，并控制用于调谐滤波器的rf能量的序列和频率。 以这种方式，可以分析对应于预定分子种类（例如燃烧产物气体）的吸收带的近到中等范围的红外线，以及产生用于控制燃烧过程的反馈信号。
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6.发明授权
公开(公告)号：US5076699A
公开(公告)日：1991-12-31
申请号：US345858
申请日：1989-05-01
CPC分类号： G01N21/3504 , G01J3/26 , G01J2003/2886 , G01N2021/3513 , G01N2201/067
摘要： A remote gas measuring apparatus and method utilizes the optical absorption line characteristics to determine an amount of gas of interest as may exist in an area under study. The remote gas measuring apparatus includes a source of electromagnetic radiation that can be projected toward the area in question and a light collecting arrangement. The light signal received is coupled to a fast light switch modulator which modulates the light signal to a first frequency. A second modulating arrangement modulates the light signal to a second frequency and includes a birefringent etalon device having a periodic spacing equal to the periodicity of the absorption lines of the gas of interest. The second modulating means is further effective such that, when an electric field is applied thereto the transmission spectra associated with the light signal is shifted between spectra which coincide with the absorption lines and spectra which fall between the absorption lines. The light signal from the etalon device is then conditioned and input to a detector configuration which distinguishes between the light signal at the first frequency and the light signal at the second frequency in order to determine at least a quantity of the gas of interest.
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公开(公告)号：US4955699A
公开(公告)日：1990-09-11
申请号：US276093
申请日：1988-11-23
CPC分类号： G02F1/0018 , C30B11/00 , C30B29/46
摘要： Disclosed is a crystal 1 of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, cadmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphoride, indium arsenide, or mixtures thereof, doped with a precious metal in an amount of about 25 ppm up to the solubility limit of a precious metal in the crystal. The crystal is useful in nonlinear optical devices, acousto-optical devices, piezoelectric devices, and other types of optical and acoustic devices.
摘要翻译： 公开了铊砷化钪，硫化铊硫化物，铊硫化钒，硒化锇，硒化镉，硫化镉，硒化镉，砷化镉锡，砷化镉砷，磷化铟，砷化铟或其混合物的晶体1，掺杂 其中贵金属的量约为25ppm，高达贵金属在晶体中的溶解度极限。 该晶体在非线性光学器件，声光器件，压电器件和其他类型的光学和声学器件中是有用的。
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8.再颁专利Tl.sub.3 PSe.sub.4 Compound, single crystals, and acousto-optical devices 失效Tl {hd 3 {b PSe {hd 4 {b化合物，单晶和声光器件
公开(公告)号：USRE29557E
公开(公告)日：1978-02-28
申请号：US711020
申请日：1976-08-03
CPC分类号： G02F1/11 , C01B25/00 , C30B11/00 , C30B29/46 , H01S3/1068
摘要： The compound Tl.sub.3 PSe.sub.4 is disclosed. Non-conducting single crystals of the compound are prepared which have outstanding acousto-optical properties including an exceptionally high acousto-optical figure of merit. The crystals are used in various acousto-optical devices including a display device, a laser modulator, a non-collinear acousto-optic filter, and an acoustic delay line.
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9.再颁专利Method and arrangement for measuring the optical absorptions of gaseous mixtures 失效测量气体混合物光吸收的方法和装置
公开(公告)号：USRE35355E
公开(公告)日：1996-10-22
申请号：US25280
申请日：1993-03-02
CPC分类号： G01J3/26 , G01J2003/2886 , G01N21/3504
摘要： A gas analyzer arrangement for detecting the presence or quantity of a gas of interest includes a source of electromagnetic radiation for directing a light beam through a light conditioning device such that the light beam is collimated into a parallel beam of light. The conditioned light beam is then directed through a gas sample cell which contains a sample of the gas of interest. The gas of interest has associated therewith, vibrational rotational absorption lines specific to that gas and which are effective for altering the light beam according to the absorption characteristics thereof. The altered light beam is then directed to a birefringent etalon device which has been sized specifically to match those absorption lines of the gas of interest. An electro-optical modulator device associated with the birefringent etalon modulates the absorption lines between the transmission spectra maxima and a point between the transmission spectra maxima so that an absorption ratio can be utilized to determine the presence or quantity of the gas of interest.
摘要翻译： 用于检测感兴趣的气体的存在或数量的气体分析器装置包括用于将光束引导通过光调节装置的电磁辐射源，使得光束被准直成平行光束。 然后将条件化的光束引导通过包含感兴趣的气体的样品的气体样品池。 感兴趣的气体与其相关联，对该气体特异的振动旋转吸收线，并且根据其吸收特性有效地改变光束。 然后将改变的光束导向双折射标准具装置，该装置的尺寸被特别地匹配于感兴趣的气体的那些吸收线。 与双折射标准具相关联的电光调制器装置调制透射光谱最大值和透射光谱最大值之间的点之间的吸收线，使得可以利用吸收比来确定感兴趣的气体的存在或数量。
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10.发明授权Acousto-optic devices utilizing thallium arsenic sulfide (T1AsS.sub.3) crystals 失效使用铊硫化砷（T1AsS3）晶体的声光器件
公开(公告)号：US5504615A
公开(公告)日：1996-04-02
申请号：US165291
申请日：1993-12-13
CPC分类号： G02F1/0018 , C01P2002/84 , G02F1/33
摘要： Acousto-optical devices utilize crystals of a novel material thallium arsenic sulfide (Tl.sub.3 AsS.sub.3) grown from a melt. A Tl.sub.3 AsS.sub.3 crystal is cut and parallel faces are prepared and polished. A piezoelectric transducer connected to an RF generator is placed on the acoustic face to generate sound waves. The light is directed through the optical face of the crystal and interacts with the acoustic waves. These devices may be used in signal processing, spectrum analyzing, spectroscopic, liquid analyzing and spectral imaging systems.
摘要翻译： 声光装置使用从熔体生长的新型材料铊硫化砷（Tl3AsS3）的晶体。 切割Tl3AsS3晶体并制备并平面。 连接到RF发生器的压电换能器放置在声表面上以产生声波。 光被引导通过晶体的光学面并与声波相互作用。 这些器件可用于信号处理，频谱分析，光谱，液体分析和光谱成像系统。
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