Method and apparatus for imaging of low radiance objects
US9933531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2015 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Feb 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for optical imaging of a low radiance object is disclosed. The apparatus comprises a fixed polychromatic imaging device, the optical path between the polychromatic imaging device and the low radiance object being defined by a first section extending from the polychromatic imaging device to a fixed point, and a second section extending from the fixed point to the low radiance object. The apparatus also comprises a fixed high-sensitivity imaging device, the optical path between the high-sensitivity imaging device and the low radiance object being defined by a third section extending from the high-sensitivity imaging device to the fixed point, and the second section; and a focus controller arranged to control the focus of the high-sensitivity imaging device based on the focus of the polychromatic imaging device and the respective lengths of the first and third sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.