Light-source unit

Details Light-source unit Light-source unit

1992-09-30

1993-10-05

Gonzalez, Frank

Optical: systems and elements

Optical frequency converter

Harmonic generator

359710, 385122, 385142, 385145, H03F 700

Patent

active

052510603

ABSTRACT:
A light source unit for receiving and transmitting information to and from an optical disk or the like, which reshapes an elliptical in cross-section beam of laser light into a circular in cross-section beam of laser light by a beam shaping assembly composed of at least one lens having a cylindrical surface and an optical axis, the cylindrical surface having generatrix lines that are perpendicular to the optical axis of the lens, where the circularly shaped beam of laser light then enters a wavelength converter for generation of a second harmonic (half wavelength of the fundamental).

REFERENCES:
patent: 4972422 (1990-11-01), Tatsuno

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