Patent ID: 6628405
Filing Date: 2003-09-30
Classification: G01B

Abstract:
An optical alignment instrument comprisinga telescope section having a housing and having therein lens means arranged to receive an input beam from a device to be tested for alignment of an adjustable beam generating mechanism in such device, said telescope housing being adapted for fixation at one of its ends to the device and defining an optical axis, a beam splitting and beam directing means affixed to the other end of said telescope housing and including a beam splitter therein positioned at a predetermined angle to said optical axis, said beam splitter being constructed and arranged to refract the input beam exiting said telescope into first and second reference beams, a first mirror receiving a first refracted beam from said beam splitter and redirecting said first reference beam through said beam splitter along an output axis, a second mirror receiving said second reference beam from said beam splitter and redirecting said second reference beam through said beam splitter also along said output axis, a view screen receiving said reflected reference beams along said output axis and functioning to form images from said first and second reference beams, whereby coincidence of the two images indicates alignment of the input beam on the optical axis of the instrument and spacing of the two images indicates the amount and direction of misalignment.