Infrared Transmitting Glass

A. J. Worrall

doi:10.1117/12.956905

25 September 1979 Infrared Transmitting Glass

A. J. Worrall

Proceedings Volume 0163, Advances in Optical Production Technology II; (1979) https://doi.org/10.1117/12.956905
Event: Advances in Optical Production Technology, 1979, London, United Kingdom

Abstract

Glasses in the system Ge-As-Se have attractive properties for use in the 8-12μm band to correct chromatic aberration in optical systems based on germanium. The selection of a glass composition is described ana included consideration of the various desirable features of a practical optical material. A manufacturing method has been developed in which the glass is melted in a sealed tube to produce 7 Kg boules of glass at 75mm diameter and current slumping techniques increase the maximum diameter of blank to 160mm. The optical properties include a transmission range of 1 to 1511m, refractive index of 2.49 and an 8-1211m reciprocal dispersive power of 113. An anti-reflection coating developed for the 6-12μm band reduces surface reflection losses to about 2(), per surface. The physical properties indicate that the material is more suited to use as internal components. The glass can be optically worked using basically conventional techniques ana an outline of the prevention of toxic hazards during working is giyen. The optical quality has been assessed and a refractive index variation of 1 x 10-4 over 90% of the area found which allows the glass to be used in high resolution systems..

Citation Download Citation

A. J. Worrall "Infrared Transmitting Glass", Proc. SPIE 0163, Advances in Optical Production Technology II, (25 September 1979); https://doi.org/10.1117/12.956905

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