Thinner, lighter and lower aberration prisms for ophthalmic...

Details Thinner, lighter and lower aberration prisms for ophthalmic... Thinner, lighter and lower aberration prisms for ophthalmic...

2005-08-23

2005-08-23

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S831000, C351S175000

Reexamination Certificate

active

06934084

ABSTRACT:
Novel optical devices, which are referred to as composite prisms in this document, have been designed, produced and tested. They have the potential to be useful for a number of vision related applications. For high prism diopter (15 prism diopters or more), composite prisms have resulted in thinner, lighter and lower aberration optical devices than the standard ophthalmic prisms currently in use. They also offer significantly better optical quality than the Fresnel press-on prisms which are also used to correct several ophthalmic disorders.

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patent: 6693745 (2004-02-01), Kondis et al.

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