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公开(公告)号：US11746968B1
公开(公告)日：2023-09-05
申请号：US18122568
申请日：2023-03-16
Applicant: Primax Electronics Ltd.
Inventor： Wei-Ping Chan , Ruey-Piin Wang , Chia-Ming Li , Yin-Liang Hu , Ming-Han Yu
CPC classification number: F21S4/28 , F21V13/04 , F21V17/06 , F21V2200/20
Abstract: A miniature backlight kit includes a covering member, a light-shading element, a light guide element, a housing and a light-emitting unit. The light-emitting unit is disposed within a first concave structure of the light-shading element. The light-shading element is disposed within a second concave structure of the light guide element. The light guide element is covered by the lateral wall of the housing. The light-emitting unit emits a light beam. The light beam is reflected to the lateral wall of the housing by the light guide element. Consequently, a luminance gradient region is formed on the surface of the lateral wall of the housing.
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公开(公告)号：US20240402409A1
公开(公告)日：2024-12-05
申请号：US18217321
申请日：2023-06-30
Applicant: Primax Electronics Ltd.
Inventor： Ming-Hui Yeh , Ruey-Piin Wang , Yin-Liang Hu , Chia-Ming Li , Ming-Han Yu , Wei-Ping Chan
IPC: F21V8/00
Abstract: The present disclosure provides a ring-shaped light guide module, which includes a ring-shaped light guide plate, a circuit board, a plurality of top light-emitting elements and a reflective layer. The ring-shaped light guide plate has a plurality of accommodating recesses disposed on an outer ring surface of the ring-shaped light guide plate and separated from each other. The circuit board surrounds a portion of the outer ring surface of the ring-shaped light guide plate. The top light-emitting elements are disposed on the circuit board and respectively located in the accommodating recesses. The reflective layer covers a portion of an inner ring surface and a first side surface of the ring-shaped light guide plate. A light emitting device including the aforementioned ring-shaped light guide module is also provided.
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