Imaging lens
US10564394B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Nov 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an imaging lens with high resolution which effectively achieves low-profileness while maintaining the wide field of view, and favorably corrects aberrations.The imaging lens comprising a first lens having negative refractive power, a second lens having positive refractive power, a third lens, a fourth lens having positive refractive power, a fifth lens having negative refractive power as a double-sided aspheric lens, and a sixth lens as a double-sided aspheric lens, wherein the first lens has a concave surface facing the image side, and the aspheric surface on the image side of the sixth lens is formed as a concave surface near the optical axis and has at least one pole point at an off-axial point, and a below conditional expression (1) is satisfied: ω≥45° (1) where ω: a half field of view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.