公开(公告)号：EP0918984B1

公开(公告)日：2001-06-27

申请号：EP97941922.3

申请日：1997-08-08

申请人： Zeptosens AG

发明人： DUVENECK, Gert, Ludwig ,  GULDEN, Karlheinz ,  KUNZ, Rino, Ernst ,  SÖCHTIG, Jürgen

IPC分类号： G01N21/55 ,  G01N21/25 ,  G01N33/53

CPC分类号： G01N21/648 ,  B01J2219/00707 ,  G01N21/7703

摘要： An optical detector for carrying out chemical analyses has at least one light source, at least one electric detection unit and at least one measurement cell. One or several optical paths coupled to the measurement cell(s) are formed between the light source(s) and the photoelectric detection unit(s). Separate edge-emitting semiconductor lasers applied on a substrate have been used in the prior art when miniaturising such detection devices arranged in arrays to simultaneously detect a plurality of analytes. The invention provides instead the use of surface-emitting semiconductor lasers as light sources, which have the advantage of being relatively easy to produce and of occupying considerably less space. The process hitherto required to separate the laser from the mother substrate and to glue it on a foreign substrate can be dispensed with in the disclosed detector.