Patent · US Active

Method for making a lens using an apparatus for precise pressing both sides of the lens

US8601835B2 · kind B2 · utility

3Cited by

12References

15Claims

0Family size

Assignee

Doctor Optics SE · DE

Inventors

Ralf Bonitz · Stadecken-Elsheim, DE
Rainer Adebahr · Eschershausen, DE
Frank Peters · Kenai, US

Key dates

Filing date	Oct 3, 2005
Grant date	Dec 10, 2013
Priority date	—
Expiry date	Apr 20, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/25
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The method for making a lens with a first convex lens surface (32) and a second lens surface (33) includes feeding a glass melt drop into a concave mold (2, 10), precise pressing both sides of the glass melt drop in the concave mold (2, 10) together with a press die (20) and immersing the press die (20) in the glass melt drop so that a supporting rim (34) with predetermined dimensions, which protrudes beyond a highest point of the second lens surface (33), is formed on the lens by glass material displaced by the precise pressing. The apparatus for precise pressing includes an upper mold part (10) a lower mold part (2) and the press die (20).

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