Lens assembly
US12153194B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jun 21, 2021 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Jun 17, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens assembly includes a first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth lenses. The first lens is a biconvex lens with positive refractive power. The second lens is with negative refractive power and includes a concave surface facing the object side. The third lens is a biconvex with positive refractive power and includes a convex surface facing the object side and another convex surface facing the image side. The fifth lens is a biconcave lens with negative refractive power. The fourth, sixth, and ninth lenses are with positive refractive power. The seventh lens is with positive refractive power. The eighth lens is with negative refractive power. The first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth lenses are arranged in order from the object side to the image side along an optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.