Transparent cover and imaging optical system
US11150543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2018 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | May 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transparent cover of an optical camera system comprises a curved sidewall portion having an outer contour formed by the rotation of a preset continuous curve. The preset continuous curve comprises a first curve segment and a second curve segment, each having a curvature no more than a first preset value, wherein the first back focus offset of a curved surface corresponding to the first curve segment does not exceed the second preset value, and a second back focus offset of a curved surface corresponding to the second curve segment does not exceed a third preset value. A first line segment is formed by connecting an end point of the preset continuous curve with a center of a circle circumscribing edges of a camera, and an included angle between the first line segment and a boundary line between the first and second curve segments is greater than 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.