Optical system
US11921343B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Sep 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/55
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system includes a substrate. An image sensor is on the substrate. The image sensor has an image plane. A lens barrel defines a mechanical axis that intersects the image sensor and image plane. The lens barrel has a first coefficient of thermal expansion (CTE). A lens mount is integrally formed with the lens barrel. The lens mount is connected to the substrate. The lens mount has a second CTE. At least one lens element is in the lens barrel on the mechanical axis and defines an optical axis. A last powered optical surface of the at least one lens element is spaced along the optical axis from the image plane by a back focal length. At least one of the first and second CTEs limiting a change in the back focal length as a result of a change in temperature of the optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.