Lens assembly
US11675153B2 · kind B2 · utility
0Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2019 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lens including 6˜11 lenses with a refractive power is provided. A spherical lens and an aspheric lens are disposed between the aperture and the image plane of the lens assembly. At least two lenses are disposed between the aperture and the object side of the lens assembly. EFL is the effective focal length of the lens. LT is the length on the optical axis of the lens from the lens surface farthest from the image plane of the lens assembly to the lens surface closest to the image plane of the lens assembly. The lens assembly satisfies the following conditions: 3 mm<EFL<5 mm, 0.1<EFULT<0.25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.