Abstract: The system has an optical scanning device formed of a plurality of pixel elements for providing a scan output signal representative of a scanned region of an object. The system has a reflector, an illumination source, a light compensator, and an object positioner. The reflector defines an ellipse. The object positioner disposes the object substantially near the major axis of the ellipse. The illumination source emits and applies light energy to the object disposed at a first focus of the ellipse. The light compensator, which varies the light energy emitted from the illumination source, has one or more dedicated pixels of the optical scanning device. The light compensator also has fiber optical transmitters that receive light transmitted from the illumination source and couple to the dedicated pixels, which are unavailable for receiving reflected light from the scanned region of the object.

Abstract: The camera system of the present invention simultaneously searches for a number of differing optical acquisition targets. This system may decode, for example, both bar codes and concentric rings. The scan signal is constantly adjusted according to both a dark reference for correcting offset and a white reference for correcting gain. The gain is also corrected according to the scanning rate as well as the amount of illumination present. A measure of this illumination may be applied directly to the optical scanning device by way of a fiber optic cable which transmits light from the illumination source. Optical calibration is eliminated by fixed optics wherein all optical elements are rigidly mounted at very close tolerances. The illumination source is disposed on one focus of an ellipse wherein the other focus is disposed at the maximum scanning distance and the reflector is formed to define the illumination ellipse to maximize the light applied to the object.

Abstract: The camera system of the present invention simultaneously searches for a number of differing optical acquisition targets. Upon detecting an acquisition target it decodes according to corresponding differing decoding algorithms. To facilitate this operation there is a system bus as well as a dedicated data bus for applying a scan signal of an optical scanning device to differing detection circuitry. This system may decode, for example, both bar codes and concentric rings. The scan signal is constantly adjusted according to both a dark reference for correcting offset and a white reference for correcting gain. The gain is also corrected according to the scanning rate as well as the amount of illumination present. A measure of this illumination may be applied directly to the optical scanning device by way of a fiber optic cable which transmits light from the illumination source.