SYSTEM, METHOD AND DEVICE FOR MEASURING PUPILLARY DISTANCES

摘要

A measuring system that embodies a method and a calibration frame for use in measuring pupillary distances is provided. The calibration frame provides true measurements as well as known measurements over a vertical plane co-planar between at least two identified points. The method includes a photographed image of the calibration frame worn by the individual so that using the true and/or known measurements of the calibration frame to compare to their corresponding “apparent” distance measured of the photographed image, the pupillary distances can be determined for providing a prescription lens for a frame desired by the individual. Thereby the measuring of pupillary distances that can take into account relevant position of the person's nose-bridge through a universal calibration frame that can be worn by individuals, and so facilitates online purchases as well as in-store dispensing of prescription frames.

主权项

1. A method for measuring pupillary distances, the method adapted to take into account a relevant position of an individual's nose-bridge, comprising:
providing a calibration frame with at least one known measurement between two identified points; capturing a photographed image of the calibration frame being comfortably worn by the individual; and determining a scale factor of the photographed image by comparing the at least one known measurement to an apparent distance between the two identified points captured on the photographed image.