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. 29, 2002
Filed:
Sep. 25, 1998
Seiji Funakawa, Tokyo, JP;
Ando Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an external resonator light source which, by removing natural emitted light, is able to send out only light which has an extremely high wavelength purity. As shown in FIG. 1, the present invention's external resonator light source is provided with a light amplifying element ; a first light reflecting means disposed to the side of one outgoing light edge surface of the light amplifying element ; a wavelength selecting element disposed to the side of the other outgoing light edge surface of the light amplifying element ; and a second light reflecting means which reflects and/or transmits outgoing light from the wavelength selecting element , and which, together with the first light reflecting means , forms a light resonator; wherein outgoing light from the wavelength selecting element is output as transmitted light from the second light reflecting means