Global Patent Index - EP 1046248 A1

EP 1046248 A1 2000-10-25 - DEVICE AND METHOD FOR OPTICAL FREE SPACE TRANSMISSION

Title (en)

DEVICE AND METHOD FOR OPTICAL FREE SPACE TRANSMISSION

Title (de)

VORRICHTUNG UND VERFAHREN ZUR DRAHTLOSEN OPTISCHEN ÜBERTRAGUNG

Title (fr)

DISPOSITIF ET PROCEDE DE TRANSMISSION OPTIQUE EN ESPACE LIBRE

Publication

EP 1046248 A1 (DE)

Application

EP 98967175 A

Priority

CH 9800454 W

Abstract (en)

[origin: WO0025452A1] The inventive device for the free space optical transmission of data, speech, sound and image information comprises a transmitting module (2) with a laser diode, a transmitting optical device (4), and a receiving module (1) having an avalanche photodiode. The inventive device also comprises a navigation assistance unit and/or a sighting device (5), one or more contact wafer(s) and/or one or more hybrid unit(s). In addition, the inventive device is provided with one or more adjusting device(s) and a connection (6) for admitting both current and control pulses. According to the inventive method, modulated light pulses are transmitted at 904 nm or 267 nm. For a bi-directional transmission, the transmitting module (2), the receiving module (1) and a telescopic sight (5) are fastened to a common base plate, and they can, in part, be separately adjusted. The device is very simple to install. It is especially suited for optically communicating over a number of kilometers during bad atmospheric conditions and visibility.

IPC 1-7 (main, further and additional classification)

H04B 10/10

IPC 8 full level (invention and additional information)

H04B 10/112 (2013.01)

CPC (invention and additional information)

H04B 10/1127 (2013.01)

Citation (search report)

See references of WO 0025452A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0025452 A1 20000504; EP 1046248 A1 20001025

INPADOC legal status


2003-11-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030503

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001103

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE