Focusing method, and image capturing device for implementing the same
US9584717B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 24, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Nov 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focusing method includes the steps of calculating a diameter difference between a first circle of confusion diameter and a second circle of confusion diameter which correspond respectively to first image data and second image data associated respectively with light energy of a first spectrum and light energy of a second spectrum, generating a control signal associated with a target image distance according to an initial image distance, the diameter difference, and a lookup table, driving movement of a lens module so as to change a distance between the lens module and an image sensor from the initial image distance into the target image distance according to the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.