Abstract: A high-energy photon imaging system including an imaging head, a signal processor, a data acquisition system and an image processing computer. The imaging head includes a detector comprising a plurality of closely-packed detection modules. Each detection module comprises a plurality of detection elements mounted to a circuit carrier. The detection elements produce electrical pulses having amplitudes indicative of the magnitude of radiation absorbed by the detection elements. The circuit carrier includes channels for conditioning and processing the signals generated by corresponding detection elements and for preparing the processed signals for further processing by a signal processor. Each conditioning and processing channel stores the amplitudes of the detection element electrical pulses exceeding a predetermined threshold. The detection modules employ a fall-through circuit which automatically finds only those detection elements that have a stored pulse amplitude exceeding the threshold.

Abstract: A method of calibrating a linear pushbroom imaging device used in non-destructive testing of a part manufactured according to a CAD model involves identifying the location of fixed reference points, such as tooling balls in the CAD model. Positioning the part on a fixture having tooling balls fixed relative to each other in the same manner as those in the CAD model. Adjusting the part on the fixture such that points on the surface of the part known to be accurate have the same locations relative to the tooling bails as the CAD part is to the CAD tooling balls. Obtaining several projection images of the part and tooling balls at different angles about an axis of rotation passing through the part. Using the known 3D locations of the center of the CAD tooling balls and the corresponding measured screen locations of the is actual tooling balls, transformation matrices, G, M.sub.

Abstract: A method and an arrangement for determining properties of fibers in a supension of said fibers with the aid of spectroscopic measurements carried out in a wavelength range within the near infrared range (NIR), comprising introducing the fiber suspension into a measuring cell (20) which is provided with a filter (35) and an outlet (47) at one end thereof; concentrating the fiber suspension in the cell while simultaneously measuring the absorbency until a predetermined value is obtained at that wavelength at which the measurement is effected, or for the highest peak of the registered spectrum, at which point supply of the suspension is stopped, the outlet (47) from the cell is closed and a complete spectrum within the wavelength range is registered, whereafter the sought properties of the fibers are determined in a computer unit on the basis of earlier calibrations carried out on samples of known fiber properties.

Abstract: A radiation image storage panel comprising a stimulable phosphor layer and an erasing light-diffusion preventive layer capable of allowing transmission of stimulated emission while preventing an erasing light from diffusing within the preventive layer along its plane is favorably employed in a radiation image reading system employing a double-side reading system in which a stimulating step and an erasing step are simultaneously performed in parallel on the same storage panel.

Abstract: A near-infrared quantitative analysis instrument for measuring blood analytes in a finger of a subject includes a temperature-sensing thermistor-type ring worn around the base of the finger and connected to the instrument via a cable. A light shield glove may be provided with the thermistor-type ring attached thereto.

Abstract: The Laser Line Identifier (LLI) is a real-time device which can indicate wavelengths of the laser radiations. LLI mainly consists of a beam splitter, narrow bandwidth transmission filters and detectors. The filters and the detectors form a unique pair so that a signal detected at a particular detector can only mean the radiation of a certain wavelength. The detectors are hardwired to a set of indicators such as a set of colored lights or a voice recording so that the wavelength of the radiation is clearly indicated even to a non-technical person.

Abstract: A radiation detector device is provided with a plurality of radiosensitive bipolar resistor elements arranged in parallel between two supply lines. Separate first signal lines are connected to a first pole of each of the resistor elements and leads out of the vacuum housing. For the reduction of the number of cable inlets, a ground cable acting as a second signal line is connected to one pole of each of the detector elements. A differential amplifier is provided associated with each of the detector elements receiving the signals from each of the first poles of the resistor elements and receiving the signal from the ground cable.

Abstract: A plurality of semiconductor radiation detector elements are arranged in a matrix array. The same number of signal process circuits as the detector elements are exclusively connected to the respective detector elements. The detector signals derived from the individual detector elements are independently stored in predetermined memory cells of a frame memory. Further, a coding circuit is connected between the signal process circuits and the frame memory.