摘要:
A waveguide hologram illumination system is based on thin substrate waveguides bearing a hologram on the surface through which light is diffracted out. A light source is optically coupled to the waveguide such that light emitted from the source is caused to propagate along the waveguide, being diffracted out at intersections with the surface of the waveguide on which the hologram is formed. The selective emission through the hologram can be advantageously used to illuminate display holograms or spatial light modulators. Provisions are made for rendering the amount of light emitted through the hologram uniform along the length of the hologram.
摘要:
A waveguide hologram illumination system is based on thin substrate waveguides bearing a hologram on the surface through which light is diffracted out. A light source is optically coupled to the waveguide such that light emitted from the source is caused to propagate along the waveguide, being diffracted out at intersections with the surface of the waveguide on which the hologram is formed. The selective emission through the hologram can be advantageously used to illuminate display holograms or spatial light modulators. Provisions are made for rendering the amount of light emitted through the hologram uniform along the length of the hologram.
摘要:
A multimode waveguide having a small thickness has light coupled to the side of the waveguide in order to provide a multimode operation of the waveguide for providing a continuous pattern of totally internally reflected light which is utilized to reconstruct holographic images from a holographic emulsion placed on a surface of the waveguide. This waveguide structure for reconstructuring a hologram has the capability of providing highly efficient hologram reconstruction while using ordinary light sources and is able to use beam diameters greater than the thickness of the waveguide.
摘要:
A multimode waveguide having a small thickness has light coupled to the side of the waveguide in order to provide a multimode operation of the waveguide for providing a continuous pattern of totally internally reflected light which is utilized to reconstruct holographic images from a holographic emulsion placed on a surface of the waveguide. This waveguide structure for reconstructuring a hologram has the capability of providing highly efficient hologram reconstruction while using ordinary light sources and is able to use beam diameters greater than the thickness of the waveguide.
摘要:
A sensor with magnetic blocks unevenly distributed in a housing includes, sequentially connected, a sensing element, a power assistance model processor (21), a digital-to-analog converter (27), and an operational amplifier (28). The sensing element includes permanent magnetic blocks (2) and a Hall element (3) arranged in a cavity fitted together by a rotating disk (1) and a fixing disk (40). Multiple permanent magnetic blocks (2) are fixedly arranged on the rotating disk (1) in a circular-annular distribution, and at most two of the permanent magnetic blocks (2) are different in intervals. On a certain side of the rotating disk (1), the magnetic polarities of adjacent permanent magnetic blocks (2) are opposite, namely, the magnetic polarities of all of the permanent magnetic blocks (2) on the certain side of the rotating disk (1) are distributed in a pattern of pole N, pole S, pole N.
摘要:
Photovoltaic devices and methods for preparing a p-type semiconductor generally include electroplating a layer of gallium or a gallium alloy onto a conductive layer by contacting the conductive layer with a plating bath free of complexing agents including a gallium salt, methane sulfonic acid or sodium sulfate and an organic additive comprising at least one nitrogen atom and/or at least one sulfur atom, and a solvent; adjusting a pH of the solution to be less than 2.6 or greater than 12.6. The photovoltaic device includes an impurity in the p-type semiconductor layer selected from the group consisting of arsenic, antimony, bismuth, and mixtures thereof. Various photovoltaic precursor layers for forming CIS, CGS and CIGS p-type semiconductor structures can be formed by electroplating the gallium or gallium alloys in this manner. Also disclosed are processes for forming a thermal interface of gallium or a gallium alloy.
摘要:
A power-assistance bicycle using a sensor having multiple magnet blocks evenly distributed in a housing, related to electric power-assistance bicycles that provide a power-assistance signal with multipoint magnetic induction. The sensor comprises: a sensing element, a power-assisted model processor, a digital-to-analog converter and an operational amplifier. The sensing element comprises a rotating disk and an annular-groove fixing disk fitted with each other, and a permanent magnetic block and the Hall element are provided in a cavity of the rotating disk and the annular-groove fixing disk. A plurality of permanent magnetic blocks that are opposite in adjacent magnetic polarities are fixedly provided on the rotating disk. The Hall element is provided on the fixing disk and in proximity to the permanent magnetic blocks. The sensor is sleeved on an exterior of a medial axis. The operational amplifier is connected with the motor controller.
摘要:
Tablet computers send relevant geographic and identification data to an application server (one of the tablets, or a local or remote server) which groups them to form a video wall. Once placed next to one another in substantially the same plane, the tablets snap photographs at more or less the same time and these images are transmitted to the application server. The server determines the relative positions of the tablets and then streams a portion of a video or digital image to each of the tablets in order that all tablets display the video or image in an integrated fashion. The tablets may operate independently or may rely upon the remote application server. Relative positions are determined by analyzing features and determining an up-down or left-right relationship between pairs of images, sorting images into vertical and horizontal rows, and placing the images into a grid.
摘要:
The invention provides a method and a device for on-line measuring the inner temperature of a cable joint, the device includes a built-in temperature measurer and an outside receiver. The built-in temperature measurer measures the temperature of the cable joint or a core wire surface by means of direct contact measuring method, and transmits the data to the outside receiver through an insulating layer by means of the radio frequency identification technique. At the same time, the outside receiver supplies power energy to the built-in temperature measurer by means of the radio frequency signal, so it resolves the problem of supplying power to the built-in temperature measurer. The device of the invention has the advantage of accurately measuring temperature, small volume, superior applicability and so on.
摘要:
A photovoltaic device, such as a solar cell, including a copper-containing-grid metallization structure that contains a metal phosphorus layer as a diffusion barrier is provided. The copper-containing-grid metallization structure includes, from bottom to top, an electroplated metal phosphorus layer that does not include copper or a copper alloy located within a grid pattern formed on a front side surface of a semiconductor substrate, and an electroplated copper-containing layer. A method of forming such a structure is also provided.