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:
Mar. 17, 2026
Filed:
Jun. 23, 2025
Japan Display Inc., Tokyo, JP;
Chikyu Nakaoka, Tokyo, JP;
Japan Display Inc., Tokyo, JP;
Abstract
According to an aspect, a light source device includes an optical element and a light source configured to emit emission light toward the optical element. The optical element integrally includes a body having a plate-like shape including a first plate surface that faces the light source and is tilted relative to an optical axis of the emission light, and prisms each having a triangular sectional shape and disposed on the first plate surface in a state of being separated from each other. Each of the prisms has a disposition surface disposed on the first plate surface, an entrance surface on which the emission light is incident, and a reflection surface that reflects, toward the first plate surface, the emission light incident through the entrance surface. An incident angle of the emission light relative to the reflection surface is equal to or larger than a critical angle of the reflection surface.