Investigations on process parameters influencing the quality of optical lenses formed by non-isothermal embossing of inorganic glasses

Mario Hug; Daniel Rieser; Peter Manns; Günter Kleer

doi:10.1117/12.625218

19 October 2005 Investigations on process parameters influencing the quality of optical lenses formed by non-isothermal embossing of inorganic glasses

Mario Hug, Daniel Rieser, Peter Manns, Günter Kleer

Author Affiliations +

Proceedings Volume 5965, Optical Fabrication, Testing, and Metrology II; 59651X (2005) https://doi.org/10.1117/12.625218
Event: Optical Systems Design 2005, 2005, Jena, Germany

Abstract

In this paper an advanced replication method for the production of optical components in inorganic glasses is introduced. The replication process features a non-isothermal molding procedure with short cycle time and thus reduced costs. Due to the complex thermo-mechanical behavior of the glass under non-isothermal forming conditions a detailed understanding of the process is essential for the replication of highly accurate optical components with tight tolerances. Thus the pressing process was investigated considering a certain demonstrator component to identify different stages when the gross geometry and the optical surface were formed. Then the most relevant process parameters were studied and their effects on the quality of the molded glass were quantified. It was found out that the geometrical properties, e.g. the thickness of the component is adjusted during a very short time interval after the glass contacts the mold, whereas contour and warping can be influenced for a longer time in the process. The parameters with the most significant influence on the thickness were the temperature of the glass blank and the target position of the pressing unit, whereas the duration of the glass-to-mold contact is a parameter which affects the contour of the molded component.

Citation Download Citation

Mario Hug, Daniel Rieser, Peter Manns, and Günter Kleer "Investigations on process parameters influencing the quality of optical lenses formed by non-isothermal embossing of inorganic glasses", Proc. SPIE 5965, Optical Fabrication, Testing, and Metrology II, 59651X (19 October 2005); https://doi.org/10.1117/12.625218

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available