Camera utilizing additional illumination from a flash light for focus detection and exposure operation
US5448331A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1993 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/051
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Camera comprises a focus detecting section for performing an object distance measurement, a flash for illuminating the object and controller for control the camera. The flash is activated to emit auxiliary light so as to assist a focus detection when a focus detection is performed by the focus detecting section, and is activated to emit light for illuminating the object during an exposure of photographing. Also, camera is capable of a self-timer photographing, and indicates the self-timer photographing by emitting the flash light during the self-timer operation. The flash light is used both as the auxiliary light for a focus detection and light for indication of the self-timer operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.