Portable electronic measuring device and method
US7804606B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Mar 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring a distance D2 between two points includes following steps. A first surface of a portable electronic device is parallel to a line defined by the two points. A distance D2 between the first surface and the line is obtained. A visible light beam B1 is rotated from an initial direction substantially perpendicular with the first surface and the line to direct at the point E1. A first angle defined by the visible light beam B1 striking the point E1 and the initial direction is computed. A visible light beam B2 is rotated from an initial direction to strike the point E2. A second angle defined by the visible light beam B2 striking the point E2 and the initial direction is computed. A distance D1 is computed based on the distance D2, the first angle and the second angle. The distance D1 is outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.