Wide-angle lens with freeform surface
US12111461B2 · kind B2 · utility
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2References
10Claims
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Key dates
| Filing date | Jun 28, 2021 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Jul 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2003/0093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for designing a wide-angle optical system having at least one freeform optical surface without rotational symmetry to create a custom 2D object-image mapping. The method is based on iteratively adjusting the at least one freeform optical 2D surface shape to have the exact 2D object-image mapping required and then adjusting the optical element surfaces to meet the other required optical specifications. The iterative method is applied until both the desired 2D object-image mapping and the other required optical specifications are reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.