Projecting an image of an object on an image plane
US11209660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Jul 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/71
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for projecting an image of an object on an image plane can include a beam splitter that outputs a first image beam and a second image beam in response to an input image beam, wherein the input image beam comprises an image of an object. The system can also include a Fourier transform lens to transform the second image beam into a Fourier image beam. The system can further include a bucket detector that is aligned in a light path of the Fourier image beam. The bucket detector asserts a control signal in response to detecting a threshold number of photons with an elevated probability of having a high spatial frequency within a timeframe and to de-assert the control signal in response to detecting less than the threshold number of photons with an elevated probability of having a high spatial frequency within the timeframe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.