title: Mechanical design of a power-adjustable spectacle lens frame.
abstract: Power-adjustable spectacle lenses, based on the Alvarez-Lohmann principle, can be used to provide affordable spectacles for subjective refractive errors measurement and its correction. A new mechanical frame has been designed to maximize the advantages of this technology. The design includes a mechanism to match the interpupillary distance with that of the optical centers of the lenses. The frame can be manufactured using low cost plastic injection molding techniques. A prototype has been built to test the functioning of this mechanical design.
authors.affiliation: Instituto de Optica, CSIC, Madrid 28006, Spain.
authors.forename: Asuncion
authors.initials: A
authors.lastname: Zapata
authors.forename: Sergio
authors.initials: S
authors.lastname: Barbero
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005139:Eyeglasses; D005246:Feedback; D006801:Humans; D007909:Lenses; D012371:Robotics / Q000295:instrumentation*