Abstract: The invention relates to an arrangement for contactless determination of at least one dimension of a moving material web, in particular a material web of opaque material, with a background illumination, with optical detection means for detecting at least one current contrast image and with evaluation means, wherein the background illumination is arranged opposite the optical detection means, wherein the material web moves in a plane between the at least one optical detection means and the background illumination, and wherein the current contrast image has at least one piece of information about at least one light intensity laterally adjacent to the material web. Furthermore, the present invention concerns a corresponding process.

Abstract: A web manufacturing supervision system for monitoring properties of a web being transported in a moving direction during a web manufacturing process, includes: a) a radiation source for illuminating a first spot on the web; b) a tunable first detector for capturing signal radiation emanating from the first spot within a signal wavelength band; the signal wavelength band being adjustable to one of at least a first wavelength band and a second wavelength band; c) a second detector for capturing reference radiation emanating from the first spot within a reference wavelength band; d) control means for alternatingly tuning the signal wavelength band to the first wavelength band and the second wavelength band and measuring the signal at both wavelength bands simultaneously.

Abstract: Methods and apparatus for measuring thickness and related properties of transparent objects, such as glass.

Abstract: An apparatus for measuring thickness and/or basis weight of a web or film has a frame defining a measurement channel between two opposing frame faces. A first sensor component is on or appended to the first face and a second sensor component is on or appended to the second face of the frame. A series of rollers guide the web or film into the measurement channel in an overlapping relation such that at least two portions of said web reside in said measurement channel for detection by the sensor. The frame may be a C-frame gauge, and the sensor may be two capacitor plates. One sensor component is a source, while the opposing sensor component is sensitive to the source emission. The combined thickness of the portions of the web residing in the measurement channel is determined based upon the degree to which the web or film attenuates the emission.

Abstract: The present invention provides a method for determining the functionality remaining in a functional fabric, the method comprising the steps of: providing a used functional fabric having a known original functionality, a current wear, and a current unknown functionality, providing a light source, providing a detector, optically measuring the current wear using the light source and the detector, and evaluating the current unknown functionality using a correlation that expresses the current unknown functionality as a function of the current wear, optionally the detector further comprises a digital camera, and wherein the method further comprises the step of: obtaining a magnified image of the functional fabric and quantifying the fractal dimension using a box-method fractal analysis on the image. The method may be applied the insecticide treated fabrics.

Abstract: One or more techniques and/or systems are disclosed herein for relaying a request to a process running on a computing device from a web client and receiving a response from the process. A bridge message client disposed in a web application, running in a browser on a computer, opens a local connection to a process running outside the browser. The bridge message client comprises a communication channel ID that identifies a communication channel to host the local connection to a bridge server, and a bridge message client ID facilitates communications from the bridge server to the web application. The bridge server is disposed outside of the browser environment, and can receive a request from the bridge message client and forward it to the process, and/or can receive a response to the request from the process and forward it to the bridge message client over the local connection.

Abstract: A transmission X-ray analyzer (1) for detecting a transmission X-ray image of a sample (100) that is continuous in a band shape includes: a TDI sensor (14); an X-ray source (12) arranged opposed to a TDI sensor; a pair of support rollers (31, 32) arranged away from the TDI sensor between the TDI sensor and the X-ray source, the pair of support rollers being configured to transport the sample to a detection position of the TDI sensor while keeping a constant interval between the TDI sensor and the sample; and a pair of outside rollers (51, 52) arranged respectively on an outer side of the pair of support rollers in a transportation direction (L). One of the pair of support rollers and one of the pair of outside rollers are arranged at different positions as to apply a tension to the sample between the pair of support rollers.

Abstract: An apparatus includes: a body including a port into which a medium is insertable; a light source that is provided in the body and illuminates when an image is read for the medium that has been inserted into the port; a guide and output unit that is optically connected to the light source, guides light emitted from the light source, and outputs the guided light into the port; a receiver that detects the output light; and a determiner that determines whether the medium has been inserted into the port based on a result of the detection. The light source also illuminates when the determiner makes the determination. A region in the port through which the light output from the light guide and output unit passes exists from one end to the other end of the port in a width direction being a longitudinal direction of the port.

Abstract: An imaging system includes a two-dimensional detector having a plurality of cells wherein each cell is configured to detect energy or signal passing through an object. The imaging system includes a computer programmed to acquire imaging data for the plurality of cells, identify a cell to be corrected, based on the imaging data, interpolate Ix and Iy for the identified cell based on neighbor cells, and calculate local gradients gx and gy between the identified cell and its neighbor cells based on the interpolation. The computer is further programmed to calculate weighting factors wx and wy based on the local gradients, calculate a corrected final value I(0,0) for the identified cell, and correct the identified cell with the corrected final value.

Abstract: Apparatus for buffering of a web feed system using feedback based on the amount, or extent, of loop of the web within a buffering module. The extent of the loop is measured optically. An opaque extensor is inserted within the loop to mark the extent of the loop so as to enable the optical sensor to work accurately even if the web is transparent.

Abstract: An optical system is usable for forming an illuminated pattern on the surface of a material which is being displaced with respect to that illuminated pattern. An illuminating device, which includes several light sources that are driven in a pulsed manner by a control unit, emits light that is used to form the illuminated pattern. A detection device detects the light emitted by the illuminating device. The control unit controls one individual light source, or a group of light sources. An operating time of the light source or sources is synchronized with an exposure time of the detection device. The operating time of the light source is shorter than the exposure time of the detection device.

Abstract: A method for measuring the quantity of light emitted from an optical write head which drives an array of light shutter elements extending in a main scanning direction individually in accordance with image data. In order to measure the quantity of light outputted from each of the light shutter elements, a photosensor is moved in the main scanning direction at a constant speed while the light shutter elements are driven in such a way that adjacent elements are not driven at a time. While light shutter elements which are in odd numbers in the array are driven, the photosensor is moved forward to measure the quantities of light outputted therefrom, and while light shutter elements which are in even numbers in the array are driven, the photosensor is moved backward to measure the quantities of light outputted therefrom.