Patent · US Active

Method and arrangement for reducing thermal effects in compact adjustable optical lenses

US8310772B2 · kind B2 · utility

1Cited by

8References

12Claims

0Family size

Assignee

Polight AS · NO

Inventors

Lars Henriksen · Ny Frederiksdal, DK
Thomas Spatscheck · Sandefjord, NO
Vladimir Kartashov · Horten, NO
Jon Herman Ulvensøen · Lørenskog, NO

Key dates

Filing date	Jul 9, 2009
Grant date	Nov 13, 2012
Priority date	—
Expiry date	Jul 9, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG02B26/004
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present invention provides thermal compensation for a lens assembly comprising a polymer lens body. Polymers do have different thermal expansion coefficients which makes it necessary to compensate for thermal expansions to keep optical characteristics of such lenses within specifications when used under different environmental conditions. Also, it is necessary to provide thermal compensation during manufacturing of such lenses due to high temperatures during manufacturing steps.

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