Abstract: The present disclosure relates to optical crosstalk reduction in particle processing (e.g., cytometry including flow cytometry using microfluidic based sorters, drop formation based sorters, and/or cell purification) systems and methods in order to improve performance. More particularly, the present disclosure relates to assemblies, systems and methods for minimizing optical crosstalk during the analyzing, sorting, and/or processing (e.g., purifying, measuring, isolating, detecting, monitoring and/or enriching) of particles (e.g., cells, microscopic particles, etc.). The exemplary systems and methods for crosstalk reduction in particle processing systems (e.g., cell purification systems) may be particularly useful in the area of cellular medicine or the like. The systems and methods may be modular and used singly or in combination to optimize cell purification based on the crosstalk environment and specific requirements of the operator and/or system.

Abstract: A wake-up processor for a communications processor has a receive signal amplifier for amplifying the signal level of received RF which has been transmitted as wireless local area network WLAN packets, an amplitude detector for indicating the envelope of the RF energy in the packets, a threshold detector which thresholds the detected RF envelope, and a correlator which compares the detected and thresholded RF envelope with a private pseudo-random number to determine the level of correlation between the received value and the private value. When the correlation exceeds a required threshold, a wake-up signal is asserted which is used to bring a WLAN processor into an active state for processing of subsequently sent packets.

Abstract: A wake-up processor for a communications processor has a receive signal amplifier for amplifying the signal level of received RF which has been transmitted as wireless local area network WLAN packets, an amplitude detector for indicating the envelope of the RF energy in the packets, a threshold detector which thresholds the detected RF envelope, and a correlator which compares the detected and thresholded RF envelope with a private pseudo-random number to determine the level of correlation between the received value and the private value. When the correlation exceeds a required threshold, a wake-up signal is asserted which is used to bring a WLAN processor into an active state for processing of subsequently sent packets.

Abstract: In one disclosed embodiment, the present test structure for determining gate-to-body current in a floating body FET includes a floating body FET situated over a semiconductor layer, where the floating body FET includes a first gate and first and second source/drain regions. The floating body test structure further includes a second gate and a first contact situated over the first source/drain region. A gate-to-channel current measured between the second gate and the first contact is utilized to determine the gate-to-body tunneling current. The gate-to-body tunneling current can be determined by subtracting the gate-to-channel current from twice a source/drain current of the floating body FET. The test structure may also include a second contact situated on a doped region in the semiconductor layer, where a diode current flow through the doped region determines a body voltage for the floating body FET.

Abstract: A laser projection system includes at least one laser light source, a projection screen and a spatial light modulator for projecting a laser beam of the laser light source to form an image on the projection screen. The projection screen includes a luminescent layer which upon excitation by the laser beam emits blue light. The luminescent layer contains MSi6?aAlaN8?aOx+a:Eu2+ (with M=Sr, Ba,; 0?x?1; 0?a?1) as a luminescent material. With this material laser light of a laser diode emitting in the wavelength region of 405 nm can be converted to blue light of 450 nm with high efficiency. The proposed projection system, therefore, is suitable for RGB projection using laser diodes as laser light sources.

Abstract: A projection system that includes a singe light modulation device and a plurality of light sources of different wavelengths. Each wavelength of light is incident on the light modulation device at a spatially distinct location and a temporally distinct time. The use of a scanning mirror allows the projection system to sequentially form, in full-color, each of the columns or rows of an image. The projection system is characterized by the reduction of color separation or the rainbow effect due to the rendering of each column or row in full color.

Abstract: A laser projection device suitable for displaying full color images is disclosed. The LPD includes a variety of techniques for modulating laser beams produced by one or more lasers with image data to controllably produce the image using a modified raster scan.

Abstract: A DMD (4) as a image display device time divisionally displays channel images formed by separating an image into RGB channels. A white light emitted from a xenon lamp (1) is separated, by an acousto-optical element (3), into spectal components. Those spectal components are projected onto the DMD (4). A refractive index of the acousto-optical element (3) varies with a frequency of an ultrasonic wave applied thereto. Therefore, a color of the spectral component applied to the DMD (4) may be changed by varying the refractive index of the acousto-optical element. RGB monochromatic lights may be irradiated on the DMD (4) by setting the frequencies FR, FG, FB of the ultrasonic wave at appropriate values.

Abstract: The present invention has applications that include detecting color variation in a region, for example, color variations due to temperature changes in an area of ocean water, and, in a more specific application, detecting bioluminescence of certain organisms known to attach themselves to various objects. In one aspect of the invention, an acousto-optic tunable filter hyperspectral imaging system is moved across the region to collect a series of images in which each image represents the intensity of light at a different wavelength. In one embodiment, the acousto-optic tunable filter hyperspectral imaging system includes a motion platform for positioning the acousto-optic tunable filter hyperspectral imaging system over successive Y-coordinates of a region in a direction substantially parallel to a direction of motion of the motion platform.

Abstract: A laser video projector for modulating light from a laser light source by an acousto-optic modulator (AOM) according to a video signal and projecting video information to a screen using a scanner is provided. The laser video projector includes a light source for outputting a beam of white light formed of first, second, and third main wavelengths, a light separator for separating the beam of the white light into beams of monochromatic lights having first, second, and third main wavelengths in a predetermined transmission factor and a predetermined reflectivity, light modulator for modulating the beams of the monochromatic lights according to a chrominance signal, light combiner for combining the monochromatic lights modulated by the light modulator into a beam, and light scanner for scanning the combined beam of the modulated monochromatic lights, thus forming an image.

Abstract: In a device for the deflection of a light bundle generated by a light source, wherein this device has a nonmechanical deflection device in which the light bundle enters and exits at a different angle determined by a controlling variable, which angle depends on the wavelength of every light component in the light bundle, it is provided that an optically dispersively active system is provided behind the nonmechanical deflection device in the light propagation direction, wherein the angular dispersion of this system is dependent on the angle of the light bundle entering the system, wherein the angular dispersion compensates for the wavelength dependence of the angle of the nonmechanical deflection device determined by the controlling variable.

Abstract: A laser beam intensity modulation system has a variable delay circuit that is used to control the relative delay in the delivery of a video signal between two cascaded AOM's. This delay circuit is controlled by a delay controller that monitors the intensity modulation of the laser beam to provide feedback control. This system maximizes the rise and fall times of the beam to generate precise beam modulation required for high speed image setters.

Abstract: A single light valve full-color projector 10 operative to display an image on a screen 12 in response to first and second video signals. The inventive projector 10 includes a laser 22 for providing a beam of coherent light. A scanning control circuit 20 coupled to the laser 22 varies the intensity of the beam on the basis of information inherent in the first and second video signals. The inventive projector 10 further includes a liquid crystal light valve 26 which modulates light illuminating an output layer 44 thereof in accordance with an internally generated voltage pattern produced by incidence of the modulated beam on an input layer 40 thereof. A raster scanner 24 is operative to deflect the beam to a first set of areas on the input layer 40 in response to the first video signal and to deflect the beam to a second set of areas on the input layer in response to the second video signal.

Abstract: An acousto-optic tunable filter (AOTF) is employed to generate a display by driving the AOTF with an RF electrical signal comprising modulated red, green, and blue video scan line signals and scanning the AOTF with a linearly polarized, pulsed light beam, resulting in encoding of color video columns (scan lines) of an input video image into vertical columns of the AOTF output beam. The AOTF is illuminated periodically as each acoustically-encoded scan line fills the cell aperture of the AOTF. A polarizing beam splitter removes the unused first order beam component of the AOTF output and, if desired, overlays a real world scene on the output plane. Resolutions as high as 30,000 lines are possible, providing holographic display capability.

Abstract: A tone correcting apparatus for an image display apparatus is disclosed. The apparatus includes a test signal generating circuit for generating a test signal, a memory for outputting tone correction data depending upon the test signal, a modulating circuit for modulating the light from a light source depending upon the tone correction data, a detecting circuit for detecting the modulated light from the modulated circuit, and a control circuit for calculating correction data depending upon a detected signal output from the detecting circuit. The correction data is stored in memory. Also disclosed is a laser display apparatus in which a laser beam is modulated according to a video signal before being displayed. An synchronizing separating circuit separates a synchronizing signal from the video signal. A selecting circuit selects between a test signal generated by a test signal generating circuit and the video signal depending upon the synchronization signal.

Abstract: An improved, multicolored video imaging system to provide a video image on a projection surface, which system includes a red, blue and green pulsed laser as a light source to provide inlet beams, an acoustic-optical cell to receive the inlet beams, an electrical signal to a sound transducer on the cell to provide a sound-modulated outlet beam; a projection surface to display the multicolored image and a projection system to project the outlet beam onto the projection surface to display the video image. The system includes as an improvement a solid state actuator to move a distance in a 45.degree. direction to backtrack the line of image of the outlet beam and a ramp signal device to provide a ramp signal that is proportional in time to the pulse duration of the input beams when the pulse duration is longer than the pixel propagation time for a line of image to be displayed, thereby minimizing the blurring of the line of image displayed.

Abstract: Apparatus for horizontally scanning an image corresponding to electronic video input information utilizing a Bragg Diffraction cell in which collimated light from a laser directed through the cell is modulated by a real-time fourier transform of a line of video input information, thereby to produce a one line acoustic hologram in the cell which is reconstructed at a infinity as a stationary image corresponding to the horizontal line of video information. Using a suitable lens system, the stationary image is re-imaged at a plane positioned at a fixed distance from the Bragg Diffraction cell. The scanner is useful in image projection systems, in which the horizontal line image is vertically scanned by a galvanometer driven mirror vibrating in synchronism with the vertical blanking interval of the input video.