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Current content: 158 251 954 patent documents

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1 828 765 documents amended

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EP 0256651 A3 19900228 - OPTICAL RADIATION SENSITIVE APPARATUS

Title (en)

OPTICAL RADIATION SENSITIVE APPARATUS

Publication

EP 0256651 A3 19900228 (EN)

Application

EP 87305982 A 19870707

Priority

GB 8616330 A 19860704

Abstract (en)

[origin: EP0256651A2] Infra-red surveillance apparatus adapted to discount short range objects (10). The apparatus comprises two lenses having fields of view with parallel axes (6) and a photo-electric detector (4) positioned behind each lens (3). Comparator means (9) operates so as only to pass signals resulting from an object in the field of view of both lenses.

IPC 1-7

G02B 23/12; G06F 15/66

IPC 8 full level

G08B 13/193 (2006.01)

CPC (source: EP)

G08B 13/193 (2013.01)

Citation (search report)

DE 1282030 B 19681107 - IBM
EP 0107042 A1 19840502 - CERBERUS AG [CH]
EP 0080114 A1 19830601 - ELTEC INSTR AG [CH]

Designated contracting state (EPC)

BE DE FR GB NL

DOCDB simple family (publication)

EP 0256651 A2 19880224; EP 0256651 A3 19900228; GB 8616330 D0 19861217

DOCDB simple family (application)

EP 87305982 A 19870707; GB 8616330 A 19860704