Patent ID: 6816265
Filing Date: 2004-11-09
Classification: G01B,G02B

Abstract:
An interferometer, comprising:a beam splitter receiving a light beam and splitting the light beam into a first light beam and a second light beam; a scanning mirror having a sustainable oscillating movement, the scanning mirror having two opposing planar reflecting sides; a plurality of steering mirrors for reflecting the first light beam to one of the opposing planar reflecting sides, and the second light beam to the other one of the opposing planar reflecting sides, the beam splitter, scanning mirror and steering mirrors being provided in a first plane; and a tilt compensator and delay element having an odd number of mirrors including at least three mirrors, the mirrors being positioned to receive at least a portion of the first light beam and reflecting the first light beam out of the first plane and reflecting the first light beam back into the first plane so as to provide tilt correction and to delay the first light beam.