Patent ID: 7251028
Filing Date: 2007-07-31
Classification: G01J,G01N

Abstract:
1. An apparatus comprising: a first device for radiating a first beam characterized by a first wavelength in a first direction and a second beam characterized by a second wavelength in a second direction, wherein said first wavelength is different than said second wavelength, and wherein said first direction is oblique to said second direction; a second device for receiving said first beam and said second beam and for directing said first beam onto a locality from a third direction and said second beam onto said locality from a fourth direction, wherein said first beam arrives as collimated at said locality, wherein said second beam arrives as collimated at said locality, and wherein said third direction is oblique to said fourth direction; and a third device for receiving said first beam and said second beam at said locality, wherein said third device comprises a mirror having a rotation axis, and wherein said mirror is capable of axial motion about said rotation axis, and further wherein the reflecting face of said mirror and said rotation axis are substantially coplanar.