Method for controlling an imaging beam path which is tapped off from a film recording beam path of a movie camera
US7903231B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2005 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | May 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2228
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling an imaging beam path which is tapped off from a film recording beam path of a movie camera and is interrupted periodically as a function of the image recording frequency of the movie camera is provided. The imaging beam path is interrupted at a constant or variable frequency by means of an optical switching element during the exposure phase of the movie film, or is deflected from a first imaging plane to at least one second imaging plane, or to a light trap. An apparatus comprising at least one DMD-chip which is arranged in the imaging beam path of the movie camera and has micromirrors which are arranged in the form of a raster, can be pivoted under electronic control, and deflect an incident beam path to a first or a second imaging plane, or into a light trap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.