US 12,271,017 B1
Key structure
Ching-Yi Lu, New Taipei (TW); Ming-Cheng Wu, New Taipei (TW); and Yi-Heng Lee, New Taipei (TW)
Assigned to Acer Incorporated, New Taipei (TW)
Filed by Acer Incorporated, New Taipei (TW)
Filed on Aug. 6, 2024, as Appl. No. 18/796,280.
Claims priority of application No. 112138162 (TW), filed on Oct. 4, 2023.
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0031 (2013.01) 15 Claims
OG exemplary drawing
 
1. A key structure, comprising:
a light source;
a light guiding assembly, disposed above the light source, wherein the light guiding assembly has a central column and a platform, the platform surrounds the central column, and a bottom surface of the central column faces the light source;
a transparent cover, disposed on the light guiding assembly and covering the central column and the platform, wherein an exterior side wall of the transparent cover has a plurality of strip recesses, and each of the strip recesses surrounds the central column and the platform;
a semi-transparent and semi-reflective mirror, disposed on the transparent cover; and
a reflection mirror, disposed on the light guiding assembly, wherein the reflection mirror and the semi-transparent and semi-reflective mirror face each other through the transparent cover, and a part of a light generated by the light source generates an infinity reflection between the strip recesses, the reflection mirror, and the semi-transparent and semi-reflective mirror after passing through the light guiding assembly.