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:
Apr. 25, 2017
Filed:
Feb. 26, 2015
Fujifilm Corporation, Tokyo, JP;
Seishi Ikami, Ashigarakami-gun, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A light source unit has two or more types of emission units which apply excitation light of three colors (blue, green, and red). The emission units share a single circuit board. LEDs of the respective emission units are mounted on the circuit board. An excitation light filter, which limits a wavelength range of light to generate the excitation light, is placed in front of each LED in direction of light emission from the LED. Each emission unit has a mounting area that faces the excitation light filter. Blue light from the LED excites resin contained in the circuit board and causes harmful light. Light shielding sections provided around the mounting area prevent the harmful light from being transmitted to another emission unit through the circuit board. Each light shielding section is composed of through holes.