Importance

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Abstract

A rotatable bar code scanner mirror assembly includes a rotatable mirror support frame operatively coupled to an electric motor shaft for rotation with the motor shaft. A plurality of mirrors are attached to the rotatable mirror support frame with each mirror mounted to a frame in a different plane intersecting at least one other plane of a mirror mounted to the support frame. Each mirror is shaped to have a pair of generally flat offset portions, offset from each other, on opposite sides of a center axis and each offset portion is connected with a center mirror portion so that a return laser beam can be reflected off the offset portions and the outgoing laser beam reflected off the center portion so that the outgoing and return beams use the same scanner mirror assembly. Each of the offset portions is a generally rectangular shaped, flat mirror giving the mirror a zig-zag shape portion and each mirror is attached to a pair of generally parallel faceted frame portions to form a continuous faceted mirror assembly. The offset portions are formed to allow the return signal to be equalized. The outer lobes of the 'z' are positioned to allow a maximum return which is balanced in amplitude.

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First Claim