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:
Jan. 12, 1999
Filed:
Jan. 22, 1997
Yukio Kyusho, Tokyo, JP;
Motohiro Arai, Tokyo, JP;
Nec Corporation, Tokyo, JP;
Abstract
The diameter of the spot of the light output from a laser diode is reduced through a coupled optical system so as to be smaller than the incidence aperture of a tapered total reflection rod. The light output from the coupling optics is focused into the incidence aperture of the total reflection rod. The total reflection rod is equipped with a smaller emission aperture than the diameter of the incidence aperture and further reduces the spot of the focused light. That is, the light passing through the total reflection rod is reduced to a smaller diameter while being totally reflected internally. A laser medium is in optical contact with the emission aperture of the total reflection rod and is pumped by the light which is output from the total reflection rod.