Minimizing cement strain while cementing thin lenses using ultraviolet light

Donald R. Green

doi:10.1117/12.158610

27 September 1993 Minimizing cement strain while cementing thin lenses using ultraviolet light

Donald R. Green

Proceedings Volume 1999, Adhesives Engineering; (1993) https://doi.org/10.1117/12.158610
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Optical Designers seem to enjoy designing doublet lenses with one lens much thicker or physically stronger than the other. For manufacturers, that can cause distortion problems when the two dissimilar materials are cemented. We measure this pull or distortion by using our Zygo interferometer. In other words we can detect the distortion in the elements by observing the fringe pattern on one of the outside surfaces. The usual element we choose to observe is the thinnest element. We regard a thin optical element as anyone with a thickness to diameter ratio of over eight to one. This is a discussion on how our company solved this problem of distortion when using an ultra violet lens cement and avoid pulling without reticulation. The goal is always to have less than 1/4 fringes or less distortion.

Citation Download Citation

Donald R. Green "Minimizing cement strain while cementing thin lenses using ultraviolet light", Proc. SPIE 1999, Adhesives Engineering, (27 September 1993); https://doi.org/10.1117/12.158610

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