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:
Jun. 03, 1997
Filed:
Oct. 17, 1994
Chiaki Goto, Kanagawa-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An optical wavelength converter that converts the wavelength of the fundamental wave emitted from a fundamental wave light source by causing the fundamental wave to enter a non-linear optical material. The converter has a filter that absorbs only one of two wavelength-converted waves which is emitted from the non-linear optical material in directions opposite to each other. In the converter, light transmission end faces of an element interposed between the filter and the non-linear are covered with an antireflection coating. Alternatively, instead of the filter, the converter has a reflecting optical element which reflects only one of two wavelength-converted waves which are emitted from the non-linear optical material in directions opposite to each other, and which causes the reflected wavelength-converted wave to travel along an optical path which does not return to the non-linear optical material. In this construction, the light transmission end faces of the element interposed between the filter and the non-linear are also covered with an antireflection coating with respect to the wavelength-converted waves. Thus, variations in an output of the wavelength-converted wave resulting from variations in the wavelength of the fundamental wave are prevented.