Patent · US Active

Microprism and microrod lenses, method for the production thereof

US7963122B2 · kind B2 · utility

0Cited by

4References

21Claims

0Family size

Assignee

Schott AG · DE

Inventors

Frank Buellesfeld · Kriftel, DE
Andreas Langsdorf · Ingelheim am Rhein, DE
Ulrich Lange · Mainz, DE
Volker Plapper · Alzey, DE

Key dates

Filing date	Sep 2, 2005
Grant date	Jun 21, 2011
Priority date	—
Expiry date	Jul 4, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B23/045
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method and an apparatus for producing optical glass elements, in particular optical prisms or optical rod lenses, using a drawing process. The geometry of the glass strand which is to be produced is controlled by means of cooling or heating elements positioned at least around portions of the periphery or longitudinal axis of the glass strand, inside or outside the heating apparatus.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.