Single-point diamond turning of lead indium phosphate glass

Stephen W. Allison; Joseph P. Cunningham; Slobodan Rajic; Lynn A. Boatner; Brian C. Sales

doi:10.1117/12.256211

1 November 1996 Single-point diamond turning of lead indium phosphate glass

Stephen W. Allison, Joseph P. Cunningham, Slobodan Rajic, Lynn A. Boatner, Brian C. Sales

Proceedings Volume 2863, Current Developments in Optical Design and Engineering VI; (1996) https://doi.org/10.1117/12.256211
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The development of the ability to routinely 'machine' glass materials to optical tolerances is highly desirable and, in particular, could provide new degrees of control over the precise shape of complex and unusual optical surfaces. Of particular interest in this regard is the formation of non- spherical shapes where there is a need to fabricate both inexpensive, low-precision optics as well as specialized high-precision aspheric components. This work describes the initial feasibility tests of the machining of a new type of glass, lead indium phosphate (LIP), a material which transmits from the visible to 2.8 micrometer (for thin samples). Glossy surfaces were produced with a root-mean- square surface roughness of less than 100 nm (with 200 micrometer filter). The results indicate that this approach offers the potential for producing high-quality aspheric optical shapes based on the use of LIP glass.

Citation Download Citation

Stephen W. Allison, Joseph P. Cunningham, Slobodan Rajic, Lynn A. Boatner, and Brian C. Sales "Single-point diamond turning of lead indium phosphate glass", Proc. SPIE 2863, Current Developments in Optical Design and Engineering VI, (1 November 1996); https://doi.org/10.1117/12.256211

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