METHOD FOR MANUFACTURING LASER SCANNERS

摘要

A method for manufacturing laser scanners is provided. Laser scanners are configured to drive their light-deflecting assemblies at a fixed drive frequency. By selecting for inclusion in the laser scanners only those light-deflecting assemblies that have resonant oscillation frequencies falling within a specified range, operation of the laser scanners remains within engineering tolerances even through extreme environmental changes. Moreover, the method results in laser scanner having greater unit-to-unit consistency during operation even in extreme environments.

主权项

1. A method for manufacturing laser scanners, comprising:
providing a plurality of light-deflecting assemblies [flippers] for use in laser scanners; selecting from the plurality of light-deflecting assemblies only those light-deflecting assemblies that have a resonant oscillation frequency between a target minimum resonant oscillation frequency and a target maximum resonant oscillation frequency; rejecting from the plurality of light-deflecting assemblies those light-deflecting assemblies, if any, that have a resonant oscillation frequency either (i) below a target minimum resonant oscillation frequency or (ii) above a target maximum resonant oscillation frequency; assembling laser scanners, each laser scanner including a selected light-deflecting assembly; and configuring each laser scanner to drive its corresponding, selected light-deflecting assembly at a target fixed drive frequency, whereby all of the assembled laser scanners employ substantially the same fixed drive frequency.