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:
Feb. 06, 2024
Filed:
Jun. 14, 2021
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Keiji Tsunetomo, Tokyo, JP;
Satoru Kusaka, Tokyo, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
Provided is a illumination device having a sufficiently wide irradiation angle and a uniform light intensity within a predetermined range even when using a light source that emits light similar to light with a small spread angle, such as a laser, or to parallel light. This illumination device includes a light source including at least one light emitting portion; a first optical element that receives light output from the light source and outputs the light while expanding an output angle thereof and a second optical element that receives light output from the first optical element and outputs the light while further expanding an irradiation angle thereof.