Optical transmission element

US4641916A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ulrich Oestreich · Munich, DE
• Ernst Mayr · Starnberg, DE

Key dates

• Filing date: Dec 20, 1984
• Grant date: Feb 10, 1987
• Expiry date: Dec 20, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/443
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The optical transmission element (AD) comprises a light waveguide (LW) provided with a cushion layer (PS), said light waveguide being positioned within a hard sheath (HL). A glide layer (GS) is provided between said sheath (HL) and said cushion layer (PS). The sheath (HL) is of a material having a modulus of elasticity greater than 2000 N/mm.sup.2 and a coefficient of thermal expansion less than 0.8.times.10.sup.-4 /.degree.K.