QUARTZ GLASS TUBE AS PREFORM FOR AN OPTICAL PART AS WELL AS PROCESS FOR MAKING THE QUARTZ GLASS TUBE
摘要
A quartz glass tube as a semi-finished product for an optical component that has an inner bore extending along a tube centre axis for the acceptance of a core rod and a tube wall limited by an inner casing surface and an outer casing surface is already known; within said tube wall an inner region made of a first quartz glass and an outer region made of a second quartz glass with a different index of refraction surrounding the inner region contact one another at a contact surface which runs around the centre axis. In order to provide a quartz glass on this basis that facilitates the production of optical components for special applications such as laser-activated optical components in wand or fibre form, the invention states that the contact surface has a non-round course in the radial cross-section and the inner casing surface has a circular course.
申请公布号
EP2804839(B1)
申请公布日期
2016.04.20
申请号
EP20130700567
申请日期
2013.01.17
申请人
HERAEUS QUARZGLAS GMBH & CO. KG
发明人
SCHÖTZ, GERHARD;BRÄUER, KARSTEN;SCHMIDT, RICHARD;BAUER, PETER;SCHULTHEIS, ANDREAS;SCHMITT, CLEMENS;LANGNER, ANDREAS