Abstract:
A multichannel imaging spectrometer for airborne geological, geophysical and environmental surveys in a moving vehicle. An optical scanner (123) employs a rotating polygon (20) allowing reduced scan optics with increased data acquisition efficiency. Multiple spectrometers (122) integrally registered allow channelization of the received signal to optimize noise performance in the range from ultraviolet through infrared. Output data is in a form for recording and real time display. A staring mode configuration provides enhanced sensitivity by using a two-dimensional detector array (320, 330) and adjustable mirror orientation. A scanning mode embodiment employs a two-dimensional detector array with time delay integration and three-dimensional storage of temporal spatial data and spectral wavelength and intensity. Thus, all channels are acquired simultaneously, resulting in perfect band-to-band registration with continuous spectral curves over the field of view.
Abstract:
The invention provides a positioning apparatus for accurately positioning one part of a device relative to another and is designed to be vacuum compatible for use in vacuum chambers at ultra-high vacuum. To achieve this, no lubrication is allowable on relatively movable parts so that all sliding contact at relatively movable surfaces must be avoided. The preferred embodiment is for use in rotating a diffraction grating inside a Cerny-Turner monochromator at ultra-high vacuum. A linear piezo electric INCHWORM translator (60) is used inside the vacuum chamber to drive an output member (64) in very small incremental steps with very high accuracy. A tape (61) is used to transmit the linear motion of the output member into rotary motion of the diffraction grating support (53). This is achieved by wrapping the tape around a cylindrical support (58) of the diffraction grating and attaching both ends of the tape via a tensioning device (65) to the output member (64) giving slip-free transmission of motion. A flexural pivot (48, 49) is used for supporting the cylindrical support from fixed structure to allow the rotation of the support without sliding of backlash. A detector e.g. an opto-electronic scale reader (74) reads the position of the rotary support directly from a tape scale (73) wrapped around it to provide an indication of the movement of the grating.
Abstract:
An atomic absorption spectrometer in which each sample is analyzed for all desired elements before starting the next sample. New features include the grating drive, lamp-carousel alignment, pulsed atom source, lamp-drift compensation, and dynamic range control. The grating (G) is driven by an arm (A), the arm (A) by a taut band (B) wound on a drum (D), and the drum (D) directly by a motor. The lamp carousel (C) mounts on an ''L''-shaped rocker with one horizontal and one vertical arm. The carousel (C) rotates on a horizontal axis (P1) at the end of the vertical arm. The rocker itself pivots on a horizontal axis (P2) at the corner of the L; it is driven about its axis by a motor (M2) and screw (W) at the other end of the L. Carousel (C) rotation on its axis moves the right lamp into position and adjusts it accurately in vertical direction. Pivoting of the rocker simultaneously on its corner axis positions the lamp accurately in the horizontal direction. The pulsed atom source is a combined angled-gas-jet- and discharge unit. During pulses it yields high absorption with better detectability limits; average power is lower. The lamp-drift compensator makes double duty of the absorber pulsation to obtain a lamp-intensity reading between pulses. Dynamic range control is obtained by even further exploiting the pulsation, namely by taking measurements at a known delay (and decay) time after each pulse.
Abstract in simplified Chinese:一种光谱总成可包括一光谱仪。该光谱仪可包括一照明源以产生一光以照明一样本。该光谱仪可包括一传感器,以基于由该样本反射之光自照明该样本之该光获得一光谱量测。该光谱总成可包括一光管以发送自该样本反射之该光。该光管可包括一第一开口以收纳该光谱仪。该光管可包括一第二开口以收纳该样本,使得当在该第二开口处收纳该样本时该样本系由该光管及一基底表面围封。该光管可与将该照明源及该传感器与该样本对准相关联。
Abstract in simplified Chinese:致动器100包括:固持器50,具有安装绕射光栅1的载置面与旋转轴52;固定部20,具有轴承21a,该轴承21a保持固持器50的旋转轴52;弹性构件(板片弹簧30),包含固定于固定部20的外周部31、固定于固持器50的内周部32、及连接外周部31与内周部32且具有弹性的臂部33;以及驱动部,具有设置于固持器50的线圈40及设置于固定部20的磁铁10。
Abstract in simplified Chinese:一用于频带宽度选择之机构系包括一具有一体部之分散性光学组件,该体部包括分散的一反射面,其包括一沿着分散性光学组件的反射面延伸于一纵轴线方向之入射区域。体部亦包括一第一端区块,其配置于体部的一第一纵向端,及一第二端区块,其配置于体部的一第二纵向端,第二纵向端系与第一纵向端相对。频带宽度选择机构亦包括一第一致动器,其安装在分散性光学组件的一第二面上,第二面与反射面相对,第一致动器系具有一被耦合至第一端区块之第一端及一被耦合至第二端区块之第二端,第一致动器系为操作性以施加相等且相反的力至第一端区块及第二端区块以沿着体部纵轴线且在与分散性光学组件的反射面呈法向之一第一方向弯折体部。频带宽度选择机构亦包括一第二致动器,其安装在分散性光学组件的一第三面上,第三面与反射面呈法向,第二致动器具有一以一第一挠曲件被耦合至第一端区块之第一端及一以一第二挠曲件被耦合至第二端区块之第二端,第一致动器系为操作性以施加相等且相反的力至第一端区块及第二端区块以在一垂直于分散性光学组件的反射面之第二方向沿着体部纵轴线弯折体部,第二方向亦垂直于第一方向,第二致动器包括一经加压流体力施加机构。亦揭露一用于选择频带宽度之方法。
Abstract:
A color measurement apparatus to which a colorimeter that measures a color of a color measurement target is configured to be attached in a state in which a color measurement portion is in contact with the color measurement target, includes a carriage that supports the colorimeter, and a scanning mechanism portion that causes the carriage to perform scanning, in which the carriage supports the colorimeter such that the color measurement portion protrudes from a bottom surface of the carriage in a protruding direction toward the color measurement target in a state in which the colorimeter is supported.