Abstract: An optical system which includes some or all of the following parts: a laser light source which illuminates a spatial light modulator such that optical characteristics are preserved; a stereoscopic display which has a polarization-switching light source; a stereoscopic display which includes two infrared lasers, two optical parametric oscillators, and six second harmonic generators; two light sources processed by two parts of the same spatial light modulator; a method of assembly using an alignment plate to align kinematic rollers on a holding plate; an optical support structure which includes stacked, compartmented layers; a collimated optical beam between an optical parametric oscillator and a second harmonic generator; a laser gain module with two retroreflective mirrors; an optical tap which keeps the monitored beam co-linear; an optical coupler which includes an optical fiber and a rotating diffuser; and an optical fiber that has a core with at least one flat side.

Abstract: An actuator device for providing a focusing mechanism in an optical printer or optical recording device. The focusing optics are housed in a lens barrel which is maintained in position within a cylindrical winding of electrical wire by means of two diaphragm springs at the ends of the barrel. Movement of the barrel and the optics is affected by passing a current through the cylindrical winding to produce a longitudinal force on a permanent magnet secured to the lens barrel.