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:
Dec. 02, 2025
Filed:
Mar. 12, 2024
Alps Alpine Co., Ltd., Tokyo, JP;
ALPS ALPINE CO., LTD., Tokyo, JP;
Abstract
A light source device includes a light source; a light receiver; a lens disposed on a light-emitting side of the light source; a lens barrel configured to retain the lens; and a half mirror attached to the lens barrel and disposed to face the lens. The lens includes a first lens surface facing the light source and a second lens surface facing the half mirror. The first lens surface includes a first portion configured to receive light from the light source and direct it to the half-mirror through the second lens surface, and a light-focusing portion provided in a region of the first lens surface outside the first portion, such light-focusing portion configured to focus light that is reflected by the half mirror towards the second lens surface and retransmitted through the lens, towards the light receiver.