Patent · US Active

Method for reducing a light intensity of a projection device

US9436071B2 · kind B2 · utility

2Cited by

1References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Daniel Kreye · Langenbruck, DE
Frank Fischer · Pfaffen-Schwabenheim, DE
David Slogsnat · Lörrach, DE
Ming-Chang Liu · San Jose, US
Gael Pilard · Aspenhausiedlung, DE

Key dates

Filing date	Feb 25, 2013
Grant date	Sep 6, 2016
Priority date	—
Expiry date	Feb 25, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG03B2205/0007
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for reducing a light intensity of a projection device is provided which includes the following steps: projecting information in the form of a visual representation onto a total area; emitting a plurality of electromagnetic signals which are essentially imperceptible to an observer onto the total area, using the projection device; detecting objects situated in the light path between the projection device and the total area with the aid of the electromagnetic signals; and reducing the light intensity of the projection device as long as an object is detected in the light path.

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