Patent · US Active

6D positioning system using a shadow sensor

US9696185B2 · kind B2 · utility

0Cited by

8References

22Claims

0Family size

Assignee

CSM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA—RECHERCHE ET DÉVELOPPEMENT · CH

Inventor

David Hasler · Neuchâtel, CH

Key dates

Filing date	Jan 15, 2015
Grant date	Jul 4, 2017
Priority date	—
Expiry date	Jan 2, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01S5/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A positioning system, in particular, positioning in six dimensions of a sensor with respect to an assembly composed of a multitude of LEDs, is provided. The sensor is a shadow sensor and has a mask and a 2D imager. By recording the shadow of the mask cast by each LED on the imager, and by properly multiplexing the LEDs, the system can compute the 6D position of the LED assembly with respect to the shadow sensor. This computation is based, in part, on treating the shadow of the mask cast on the imager as the equivalent of the projection of light in a pinhole camera.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.