Optoelectronic transducer formed of a semiconductor component and a lens system

US5981945A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Werner Spaeth · Holzkirchen, DE
• Wolfgang Gramann · Regensburg, DE
• Georg Bogner · Lappersdorf, DE
• Ralf Dietrich · Munich, DE

Key dates

• Filing date: Mar 8, 1996
• Grant date: Nov 9, 1999
• Expiry date: Mar 8, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2224/32225
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optoelectronic transducer includes a base plate, a radiation-emitting or transmitting semiconductor component disposed on the base plate, an optical lens system aimed at the semiconductor component and a spacer joined to the base plate for the lens system. The base plate, the spacer and the lens system are formed of materials with at least similar coefficients of thermal expansion. A method for producing an optoelectronic transducer includes forming indentations in a base plate for receiving semiconductor components, while leaving a land remaining on at least one side of each of the indentations. A first plate of the size of the base plate is placed on the lands and joined to the lands by material locking. The first plate is removed between the lands producing spacers joined to the base plate. A number of the semiconductor components are inserted into the indentations in accordance with a predetermined grid pattern and are joined to the base plate to form substrates. The substrates are covered with a second plate including a number of lens systems correspopnding to number of semiconductor components, while placing the lens systems of the second plate in the same grid pattern. Th…