Symbol Technologies, LLC

Microvision, Inc.

Daniel Gonzalez

Chinh Tan

Miklos Stern

Dmitriy Yavid

Costanzo Difazio

Edward D Barkan

Mark J Krichever

Vladimir P Gurevich

Carl D Wittenberg

Askold Strat

Thomas Mazz

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.

Photodiode with improved performance in ambient light

Red, blue and green lasers respectively emit a plurality of red, blue and green laser beams having respective output powers. The beams are optically focused and collinearly arranged to form a composite beam which is swept by a pair of scan mirrors in a pattern of scan lines on a projection surface, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the composite beam to produce an image. A safety circuit detects a malfunction of at least one of the lasers and the scan mirrors, and deenergizes the at least one of the lasers and the scan mirrors upon detection of the malfunction.

Arrangement for and method of projecting an image with safety circuitry

Curved reflecting surfaces on a rotary scan component produce an aiming spot of enhanced visibility during a single scan line mode of operation for an electro-optical reader capable of reading bar code symbols in a multiple scan line mode of operation.

Production of aiming spot with enhanced visibility in electro-optical readers for reading indicia

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Setauket, NY, United States of America

Daniel Gonzalez