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:
Oct. 19, 2004
Filed:
Mar. 26, 2003
NGK Insulators, Ltd., Nagoya, JP;
Abstract
An object of the present invention is to provide a practical device for generating blue laser beam having a wavelength of 457 nm. The present invention provides a device for generating blue laser beam. The device has a solid-state laser oscillator composed of Nd-doped YVO crystal and having a length of not smaller than 0.1 mm and not larger than 1.0 mm, a reflecting means A, B provided in the oscillator , an illuminating means for illuminating pump light beam to the oscillator , and a waveguide-type device for generating harmonic wave. The oscillator and reflecting means constitute a resonator . The waveguide-type device is provided outside of the resonator . The oscillator oscillates laser beam having a wavelength of 914±1 nm, and the waveguide-type device oscillates blue laser “E” having a wavelength of 457±1 nm.