Autonomous interpupillary distance measurement device

Abstract

The invention provides an autonomous interpupillary distance measurement device. The device comprises an optical main frame, a pupil sight measurement frame and a telescopic adjustment component, wherein the optical main frame is provided with two lenses corresponding to the sight of two eyes; the pupil sight measurement frame is provided with two pupil sight measurement parts, and each pupil sight measurement part is provided with a sight measurement hole which can be adjusted consciously; the telescopic adjustment component is pivoted between the optical main frame and the pupil sight measurement frame for adjusting the distance between the optical main frame and the pupil sight measurement frame. When the sight of two eyes watches a sight mark respectively through the two lenses and thetwo sight measurement holes, the structure of the pupil distance of the two eyes and the distance between two geometric centers of two circular frame parts can be calculated through similar triangles. Therefore, the device has the advantages that the autonomous pupil distance measurement conforms to the actual visual feeling, expensive equipment is not required, the cost is low, the eyeball rotation center distance can be calculated, and the like.

Description

technical field [0001] The invention relates to a self-conscious interpupillary distance measurement device, in particular to a self-conscious interpupillary distance measurement which is more in line with the actual visual experience, does not require expensive equipment, is low in cost, and can calculate the center distance of eyeball rotation. device. Background technique [0002] At present, the optometry of eyeglasses is mainly based on relevant optometry equipment and the experience of qualified optometrists. The angle design is different, and it is impossible to fully predict whether it meets the wearer's actual optical correction parameters. [0003] The most important thing is that the pupillary distance (Pupillary Distance, referred to as PD) in optometry is quickly measured with an instrument. If the wearer's line of sight deviates slightly during the measurement, the optometrist may not notice it, and the measurement data may be biased. As for the distance betw...

AI Technical Summary

Problems solved by technology

In particular, the problem to be solved by the present invention is that the design of the optical angle of the traditional optometry equipment and the glasses actually worn by the wearer is different, and the process of guided optometry is short, which may cause the gap between the pupillary distance and the lens optics after fitting the glasses. The center is not on the same axis, which induces the prism effect, and the improper adjustment of the arc of the frame makes the optical axis of the lens different from the visual axis of the eye, which induces distortion and aberration effects, resulting in visual discomfort after wearing glasses.

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