Rotary shutter assemblies for imaging photometers and methods for using such shutter assemblies
US7697060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | May 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Rotary shutter assemblies for imaging photometers and methods for using such shutters are disclosed herein. In one embodiment, for example, a method for capturing an image with an imaging photometer can include positioning a rotary shutter having an aperture at a first position such that the shutter blocks light traveling along an optical axis from a light source being measured to an image sensor of the photometer. The method can include pivotably moving the shutter at a generally constant angular speed to a second position with the aperture aligned with the optical axis to expose at least a portion of the image sensor to the light for a first predetermined exposure time. After exposing each portion of the image sensor to the light for the first exposure time, the method can include pivotably moving the shutter at the angular speed to a third position such the aperture is not aligned the optical axis, and then pivotably moving the shutter from the third position back to the first position without rotating the shutter 360 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.