Abstract:
The invention includes a power supply 17 for an x-ray tube 49. The power supply 17 can comprise a control box 48 and a remote box 47. An electron-emitter transformer 14 can be located in the remote box 47. A box-connector cable 41 between the control box 48 and the remote box 47 can be relatively long and an x-ray tube cable 21 between the remote box 47 and an electron emitter 19 can be relatively short. This design can provide improved electrical power transfer from the power supply 17 to the x-ray tube 49. Also, electrical cable size and cost can be reduced if a high voltage source 15 is located in the remote box 47.
Abstract:
A wire grid polarizer comprising on array of parallel, elongated first rib groups disposed over a substrate. Each first rib group can comprise a central first transmissive rib and a pair of first wires including a first wire disposed along each side of the first transmisslve rib. A first dielectric material can substantially fill first gaps between each rib group and an adjacent rib group. An array of parallel, elongated second wires can be disposed over the rib groups and the first dielectric material. The first wires or the second wires can be absorptive and the other of the first wires or the second wires can be reflective.
Abstract:
An embedded, inverse wire-grid polarizer (WGP) includes ribs 13 located over a surface of a transparent substrate 11, gaps 16 between the ribs 13, and a fill-layer 15 substantially filling the gaps 16. The fill-layer has a relatively high index of refraction, such as greater than 1.4. At a wavelength of light incident upon the WGP, E∥ transmission can be greater than E⊥ transmission. E∥ is a polarization of light with an electric field oscillation parallel to a length L of the ribs, and E⊥ is a polarization of light with an electric field oscillation perpendicular to a length L of the ribs. This embedded, inverse WGP is especially useful for polarizing, with high WGP performance, small wavelength (high-energy) regions of the electromagnetic spectrum (e.g. UV) which are difficult to polarize with conventional WGPs (E⊥ transmission>E∥ transmission).
Abstract translation:嵌入式反向线栅偏振器(WGP)包括位于透明基板11的表面上方的肋13,肋13之间的间隙16和基本上填充间隙16的填充层15.填充层具有相对的 高折射率,如大于1.4。 在入射到WGP的光的波长处,E∥传输可以大于E⊥传输。 E |是具有平行于肋的长度L的电场振荡的光的偏振,并且E⊥是具有垂直于肋的长度L的电场振荡的光的偏振。 这种嵌入的反向WGP对于具有高WGP性能的极化,对于难以用传统WGP(E⊥传输> E∥传输)极化的电磁光谱的小波长(高能量)区域(例如UV)是特别有用的。
Abstract:
The invention is a dielectric polarizing beam splitter including a grating-layer disposed over a substantially planar surface of a substrate. The grating-layer can include an array of elongated, substantially-parallel alternating high-index regions and low-index regions. An index of refraction (nL) of the low-index-regions can be less than an index of refraction (nH) of the high-index-regions.
Abstract:
The invention includes various electronic devices for avoiding or minimizing XRF analyzer user fatigue. In one embodiment, the XRF analyzer can include a finger sensor for activating an XRF analysis. In another embodiment, the XRF analyzer can include a finger tap switch for activating the XRF analysis. In another embodiment, the XRF analyzer can include a microphone for activating the XRF analysis by receipt of a verbal command. Additional benefits of some embodiments include improving XRF analysis safety and avoiding XRF analyzer theft.
Abstract:
An x-ray fluorescence (XRF) analysis system 10 can include an XRF analyzer 20 which can communicate wirelessly with other devices. The system 10 can also include remote-processor software configured to be loaded onto a handheld electronic device 23 and/or remote-computer software configured to be loaded onto a remote-computer 28. The XRF analyzer 20 can include a microphone 18 and/or an output device 31 to allow a user 19 to communicate conveniently with the XRF analyzer 20.
Abstract:
An electrostatic-dissipation device comprising an x-ray tube and an electrically-conductive shell that is electrically coupled to an anode of the x-ray tube can be used for electrostatic dissipation, especially at a bottom side of a flat-panel-display (FPD).
Abstract:
A method of making a high strength carbon fiber composite (CFC) wafer with low surface roughness comprising at least one sheet of CFC including carbon fibers embedded in a matrix. A stack of at least one sheet of CFC is provided with the stack having a first surface and a second surface. The stack is pressed between first and second pressure plates with a porous breather layer disposed between the first surface of the stack and the first pressure plate. The stack is cured by heating the stack to a temperature of at least 50° C.
Abstract:
An x-ray tube including dual, electrically-conductive emitter tubes to support and provide electrical power to an electron emitter. A method of evacuating and sealing the x-ray tube by drawing a vacuum on the x-ray tube through an inner tube of dual emitter tubes, then pinching the inner tube to seal off the enclosure and to maintain a vacuum therein.
Abstract:
A transmission x-ray tube comprising an end window hermetically sealed to a flexible coupling. The flexible coupling can allow the window to shift or tilt in one direction or another direction to allow an electron beam to impinge upon one region of the window or another region of the window.A method of utilizing different regions of an x-ray tube target by tilting an x-ray tube window at an acute angle with respect to an electron beam axis to cause an electron beam to impinge on a selected region of the window and tilting the window in a different direction to allow the electron beam to impinge on a different selected region of the window.