1 research outputs found
Mechanical design of a power-adjustable spectacle lens frame
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.Peer reviewe