Method and Apparatus for Snychronous Laser Beam Scanning, 2011

A scanner system. The system includes a mirror assembly
having multiple reflective surfaces arranged to form one
polygonal shape about an axis. A plurality of the multiple
surfaces are each positionable to reflect radiation propagating
from the source at a reflective angle and a position on the
reflective surface to direct the radiation along a transmit path.
When one reflective surface is so positioned, another surface
is positioned to receive and reflect radiation along a detector
signal path for processing. According to a related method for
acquiring image data a mirror assembly is provided with
multiple reflective surfaces sequentially arranged to form a
polygonal shape about an axis. A beam of radiation is
reflected from a first of the reflective surfaces and along a path
in a first direction to a target region and a return signal propagates
along the path in a second direction away from the target
region. A portion of the return signal is reflected from a
surface of a second of the reflective surfaces of the mirror
assembly and along a path to a detector.