Off-axis two-mirror infrared imaging system
US11796796B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 2, 2021 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | May 6, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application relates to an off-axis two-mirror infrared imaging system including a primary reflecting mirror and a secondary reflecting mirror. The primary reflecting mirror is located on the incident light path of an incident infrared light beam and reflects the incident infrared light beam to form a first reflected light beam. The secondary reflecting mirror is located on the reflection light path of the primary reflecting mirror, and is used to reflect the first reflected light beam to form a second reflected light beam. The second reflected light beam reaches an image surface after passing through the incident infrared light beam. The reflective surfaces of the primary reflecting mirror and the secondary reflecting mirror are freeform surfaces. The secondary reflecting mirror and the image plane are respectively located on both sides of the incident infrared light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.