Cemented plastic lens

Details Cemented plastic lens Cemented plastic lens

1991-10-24

1993-10-12

Sugarman, Scott J.

Optical: systems and elements

Lens

Eyepiece

351159, 351166, 359642, G02B 2500, G02B 300, G02C 702

Patent

active

052531112

ABSTRACT:
A cemented plastic lens is formed of two plastic lenses made of dissimilar synthetic resin materials having different coefficients of thermal expansion. The lenses have mating surfaces that have macroscopically the same curvature, and the mating surfaces are bonded together with a soft adhesive that is capable of elastic deformation by itself in a hardened state and that has the ability to attenuate the stress that will develop at the cemented interface due to the thermal expansion mismatch.

REFERENCES:
patent: 4679918 (1987-07-01), Ace

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