Lens assembly
US12306464B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 1, 2021 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Oct 28, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/008
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens assembly includes a first, second, third, stop, fourth, fifth, sixth, and seventh in order from an object side to an image side along an optical axis. The first lens is a meniscus lens with refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens is with negative refractive power. The third lens is with positive refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power and includes a convex surface facing the image side. The fifth lens is with positive refractive power and includes a convex surface facing the object side. The sixth lens is a biconcave lens with negative refractive power. The seventh lens is with refractive power and includes a convex surface facing the image side. The lens assembly satisfies: 4.3≤TTL/BFL≤5.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.