Action control device, action control method, imaging device, and program to reduce focus lag
US9288398B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2012 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Oct 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B11/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is an action control device, including a variable-transmittance ND filter configured to have transmittance that varies according to an applied voltage, an applied voltage control unit configured to control a voltage to be applied to the variable-transmittance ND filter, and a diaphragm control unit configured to control illuminance through a diaphragm. At a time of monitoring, the illuminance is controlled such that the applied voltage control unit applies a substantially minimum voltage to the variable-transmittance ND filter, and the diaphragm control unit opens or closes the diaphragm, and at a time of imaging preparation or imaging, the illuminance is controlled such that the applied voltage control unit applies a certain applied voltage to the variable-transmittance ND filter in a state of the substantially minimum voltage, and controls transmittance, and the diaphragm control unit performs control such that the diaphragm enters a fully opened state or substantially fully opened state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.