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. 25, 2019
Filed:
Mar. 08, 2017
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Akihiro Shimizu, Tokyo, JP;
USHIO DENKI KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A laser light source device has a light source unit including a semiconductor laser element that emits laser light having a predetermined wavelength band at a temperature from an allowable lower limit temperature to an allowable upper limit temperature, a cooler, an element temperature measurement section, a cooler temperature measurement section, and a controller that controls the cooler. The controller controls the cooler such that the cooler temperature approaches a set temperature. The controller lowers the set temperature as long as the element temperature exceeds the allowable upper limit temperature, and the controller increases the set temperature as long as the element temperature falls below the allowable lower limit temperature.