The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1995
Filed:
Apr. 19, 1994
Applicant:
Inventor:
Holger Karstensen, Hohenbrunn, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04J / ;
U.S. Cl.
CPC ...
359114 ; 359152 ; 359131 ; 359163 ; 385 24 ; 385 33 ;
Abstract
A compact bidirectional transmission and reception arrangement has a planar convex lens having a separate filter on a planar surface of the lens. The lens is positioned between a transmitter and a receiver. The filter is not transmissive to a first wavelength emitted by the transmitter but is transmissive to a second wavelength which is received by the receiver. The lens and transmitter and receiver are arranged so that light of the first wavelength emitted by the transmitter is reflected by the planar surface of the lens to a spot and light coming from the spot will be passed through the lens to a window of the receiver.