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:
Jul. 31, 2018
Filed:
Jun. 12, 2015
Screen Holdings Co., Ltd., Kyoto, JP;
Yoshio Furuya, Kyoto, JP;
Masahiko Kokubo, Kyoto, JP;
SCREEN Holdings Co., Ltd., , JP;
Abstract
Laser light from a light source part is guided to an irradiation plane by an irradiation optical system including element lenses and transparent parts. Light fluxes having passed through the element lenses respectively enter the transparent parts. A light condensing part superimposes irradiation regions of the light fluxes on the irradiation plane. When viewed in the arrangement direction of the element lenses, the light fluxes regarded as parallel light enter the light condensing part which includes a diverging lens for causing the parallel light to diverge in a Y direction perpendicular to the arrangement direction, and a converging lens for causing the light from the diverging lens to converge on the irradiation plane. This configuration readily achieves a design where the focal length of the light condensing part regarding the Y direction is reduced, and suppresses shifts in light condensing positions of the light fluxes on the irradiation plane.