Astrabismatic spectacles: a medical application for binary optics

Michael Holz

doi:10.1117/12.138871

13 January 1993 Astrabismatic spectacles: a medical application for binary optics

Michael Holz

Proceedings Volume 1751, Miniature and Micro-Optics: Fabrication and System Applications II; (1993) https://doi.org/10.1117/12.138871
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Spectacles have been designed for correcting the double vision associated with various forms of strabismus (`squint'). These correctors consist of light-weight, refracting Fresnel wedge prisms that can bend the optic axis by large deviations, while maintaining a relatively thin profile. Using a special mold structure, compatible with cost-effective production, a continuously variable range of prism angles can be pressed in suitable substrates, such as polycarbonate. The flat surface of the prism is embossed with a binary optics diffraction grating for compensating the prism's inherent color dispersion. Over a wide range of deviation angles, the Fresnel prism combined with the right grating achieves uniformly excellent quality of the perceived image, well suited for ophthalmological applications.

Citation Download Citation

Michael Holz "Astrabismatic spectacles: a medical application for binary optics", Proc. SPIE 1751, Miniature and Micro-Optics: Fabrication and System Applications II, (13 January 1993); https://doi.org/10.1117/12.138871

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