The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Nov. 05, 1997
Patrick J. Reardon, Madison, AL (US);
Paul E. Fileger, Huntsville, AL (US);
Bruce R. Peters, Huntsville, AL (US);
Tim A. Patterson, Brownsboro, AL (US);
Other;
Abstract
A laser diode collimating and aberration correction (LDCC) molded plastic optical system having a refractive lens(es) to collimate fast axis and a refractive lens(es) to collimate the slow axis of the laser diode (this lens combination is termed a cross cylindrical lens system) with a diffractive element(s) to correct for astigmatism and provide circularization of the output laser beam. All optical elements are molded in plastic to high tolerances with regard to the surface optical figure (shape of the curved surface), surface roughness, and alignment between surfaces (tilt, rotation, and translation). With proper alignment of the optical system to a suitable laser diode emitter, the combination of optic and laser diode is capable of delivering diffraction limited performance—collimated beam, circular beam cross section, and no astigmatism.