Invention Grant
- Patent Title: Light guide
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Application No.: US17994683Application Date: 2022-11-28
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Publication No.: US11719874B2Publication Date: 2023-08-08
- Inventor: Christian Maier , Mahel Petr
- Applicant: ZKW Group GmbH
- Applicant Address: AT Wieselburg
- Assignee: ZKW Group GmbH
- Current Assignee: ZKW Group GmbH
- Current Assignee Address: AT Wieselburg
- Agency: Eversheds Sutherland (US) LLP
- Priority: EP 211908 2021.12.02
- Main IPC: F21S41/24
- IPC: F21S41/24 ; F21S43/237 ; B60Q1/04 ; F21V8/00

Abstract:
A light guide, including a light input surface, a longitudinal path, a lateral surface, wherein at least a portion of the lateral surface is configured as a light exit surface, wherein a first and a second light guide section includes a plurality of light redirection elements, which are configured to redirect light towards the light exit surface, wherein the light exit surface is a curved surface with a primary focal line, wherein each light redirection element has a certain incision-depth, which increases along the longitudinal path, wherein the light exit surface of the second light guide section has a protrusion, which has a secondary focal line, which is closer to the light exit surface than the primary focal line, wherein the light redirection elements of the first light guide section intersect the primary focal line, wherein the light redirection elements of the second light guide section intersect the primary focal line and the secondary focal line.
Public/Granted literature
- US20230176271A1 Light Guide Public/Granted day:2023-06-08
Information query