Multi-point distance measurement apparatus
US5305046A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-point distance measurement apparatus comprises a distance measurement device for, and measuring distances to first and second points of an object field to produce distance information, a device for determining a difference between the distances to the first point and the second point in accordance with the distance information from the distance measurement device, and a photographing distance selection device for comparing the difference with a predetermined value and selecting the smaller one of the distances as a photographing distance when the difference is larger than the predetermined value and selecting the distance to the first point as the photographing distance when the difference is not greater than the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.