Autofocus device of a camera and method
US5860032A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An autofocus device and method for a camera that can process statistically the tracking and focusing of an object in high velocity motion. The device and method corrects the acceleration of the motion and computes a lens forwarding amount and an absolute position of the object. This is achieved by a camera system including a camera body and a focus lens. The camera body includes an autofocus detector, an autofocus processor section and a main CPU. The focus lens includes a lens, a lens driving gear, a lens CPU, and a motor. This structure, having an improved autofocus processor, enables highly accurate prediction tracking and autofocus control that accommodates fluctuations in an autofocus operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.