Patent application number | Description | Published |
20080203164 | Photodiode with improved performance in ambient light - An arrangement for improving performance of a sensor operative for collecting light from a target to generate a data signal in a presence of ambient light, includes a sample and hold circuit for operating the sensor during a sampling time period in which the sensor only collects the ambient light to generate an ambient signal, and during a holding time period in which the sensor collects both the ambient light and the light from the target to generate a composite signal comprised of the ambient signal and the data signal; and a subtracting circuit operative for subtracting the ambient signal from the composite signal to produce the data signal as an output. | 08-28-2008 |
20080204669 | Compact image projection arrangement with correction for laser beam angular misalignment - A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical assembly focuses the laser beams exiting the common exit port, and includes a common focusing lens through which the laser beams pass along respective paths that are in angular misalignment. An optical corrector element in at least one of the paths corrects the misalignment to produce aligned beams. A scanner sweeps the aligned beams in a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the aligned beams to produce the image. | 08-28-2008 |
20090079945 | Image Stabilization in a Laser-Scanning Based Projector - A projector assembly includes a multi-pixel frame projector that sequentially projects each pixel making up a frame to a viewing surface, a movement detector coupled to the projector to detect a physical movement of the projector, and a movement compensator coupled to the projector, the movement compensator operable to transmit a correction signal to the projector, the correction signal capable of causing the projector to compensate for the detected movement. | 03-26-2009 |
20090245299 | CAPACITIVE COMB FEEDBACK FOR HIGH SPEED SCAN MIRROR - An image projection system ( | 10-01-2009 |
20090251670 | OPTICAL FEEDBACK FOR HIGH SPEED SCAN MIRROR - An image projection system ( | 10-08-2009 |
20110063527 | Arrangement for and Method of Projecting A Color Image By Switching Scan Directions In Alternate Frames - A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern of scan lines to be illuminated to produce an image of high resolution in color. The direction of scanning of the scan lines is switched between alternate frames, and the resulting image is the superposition of successive frames integrated for viewing by the human eye. | 03-17-2011 |
20110090467 | Image Projection Arrangement with Divergent Light Beams - A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical assembly focuses the laser beams exiting the common exit port, and includes a common focusing lens through which the laser beams pass along respective paths that are in angular misalignment. An optical corrector element in at least one of the paths corrects the misalignment to produce aligned beams. A scanner sweeps the aligned beams in a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the aligned beams to produce the image. | 04-21-2011 |
20140039321 | Device For Detecting and Illuminating Vasculature - A laser based vascular illumination system utilizing a FPGA for detecting vascular positions, processing an image of such vasculature positions, and projecting the image thereof onto the body of a patient. | 02-06-2014 |
Patent application number | Description | Published |
20100301121 | SPECKLE NOISE REDUCING FOR LASER BASED BARCODE READERS - A method and apparatus for reducing speckle noise in laser based barcode readers. The apparatus includes a semiconductor laser diode for producing a laser beam. The apparatus also includes electronic circuitry operative to alternate the current passing through the semiconductor laser diode between a current above the threshold current and a current below the threshold current. The current passing through the semiconductor laser diode is alternated with a sufficiently high transition rate for reducing the coherence length of the laser beam. | 12-02-2010 |
20140187879 | System and Method for Laser Imaging and Ablation of Cancer Cells Using Fluorescence - A fluorescence imaging device detects fluorescence in parts of the visible and invisible spectrum, and projects the fluorescence image directly on the human body, as well as on a monitor, with improved sensitivity, video frame rate and depth of focus, and enhanced capabilities of detecting distribution and properties of multiple fluorophores. Direct projection of three-dimensional visible representations of florescence on three-dimensional body areas advantageously permits view of it during surgical procedures, including during cancer removal, reconstructive surgery and wound care, etc. A NIR laser and a human visible laser (HVL) are aligned coaxially and scanned over the operating field of view. When the NIR laser passes over the area where the florescent dye is present, it energizes the dye which emits at a shifted NIR frequency detected by a photo diode. The HVL is turned on when emission is detected, providing visual indication of those positions. | 07-03-2014 |
20140187931 | System for Detecting Fluorescence and Projecting a Representative Image - A fluorescence imaging device detects fluorescence in parts of the visible and invisible spectrum, and projects the fluorescence image directly on the human body, as well as on a monitor, with improved sensitivity, video frame rate and depth of focus, and enhanced capabilities of detecting distribution and properties of multiple fluorophores. Direct projection of three-dimensional visible representations of florescence on three-dimensional body areas advantageously permits view of it during surgical procedures, including during cancer removal, reconstructive surgery and wound care, etc. A NIR laser and a human visible laser (HVL) are aligned coaxially and scanned over the operating field of view. When the NIR laser passes over the area where the florescent dye is present, it energizes the dye which emits at a shifted NIR frequency detected by a photo diode. The HVL is turned on when emission is detected, providing visual indication of those positions. | 07-03-2014 |
20140187967 | System and Method for Multi-Color Laser Imaging and Ablation of Cancer Cells Using Fluorescence - A fluorescence imaging device detects fluorescence in parts of the visible and invisible spectrum, and projects the fluorescence image directly on the human body, as well as on a monitor, with improved sensitivity, video frame rate and depth of focus, and enhanced capabilities of detecting distribution and properties of multiple fluorophores. Direct projection of three-dimensional visible representations of florescence on three-dimensional body areas advantageously permits view of it during surgical procedures, including during cancer removal, reconstructive surgery and wound care, etc. A NIR laser and a human visible laser (HVL) are aligned coaxially and scanned over the operating field of view. When the NIR laser passes over the area where the florescent dye is present, it energizes the dye which emits at a shifted NIR frequency detected by a photo diode. The HVL is turned on when emission is detected, providing visual indication of those positions. | 07-03-2014 |