Optical measuring device
US10724847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Feb 21, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An illumination unit emits a light parallel to a first direction to a measurement space. A light receiving unit outputs a signal indicating a two-dimensional distribution of a light incident on a light receiving surface. An optical system guides the light passing through the measurement space to the light receiving surface. A control unit detects a position of the measurement object in the first direction based on the signal. The light receiving surface is tilted by a predetermined angle around a second direction with respect to a transmission direction of the light. The control unit detects a position where light intensity is changed by a predetermined value in the second direction in the two-dimensional distribution, detects a position where the detected position is located in a third direction, and detects a position where the measurement object is placed in the first direction in the measurement space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.