Fresnel lens with variable-angle translation edges
US12313861B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2022 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jul 6, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens assembly includes a lens housing and a Fresnel lens array. The lens housing includes a first portion that defines an exterior surface and an interior surface, and a second portion. The second portion defines a cavity, where the interior surface is disposed within the cavity. The Fresnel lens array is disposed within the cavity and coupled to the interior surface. The Fresnel lens array includes a first lens element and a second lens element. The first lens element has first concentric grooves defined by first translation edges and first facets. The first translation edges are disposed at thirty degrees relative to a first center point of the first concentric grooves. The second lens element has second concentric grooves defined by second translation edges and second facets. The second translation edges are disposed at one degree relative to a second center point of the second concentric grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.