Teaching device for progressive power lenses

Details Teaching device for progressive power lenses Teaching device for progressive power lenses

1980-01-16

1981-09-29

Grieb, William H.

Education and demonstration

Anatomy, physiology, therapeutic treatment, or surgery...

351169, 434178, G09B 1900

Patent

active

042920302

ABSTRACT:
A teaching device to assist first-time wearers of progressive power eyeglasses in becoming accustomed to their use. The device according to a preferred embodiment, comprises a decal adapted to be attached to the lenses of the glasses, and provided with precisely shaped and positioned cutouts to locate and uncover at least parts of the distance, reading and progressive corridor portions of the lenses.
By wearing glasses with the decal affixed to each lens for a couple of hours or so, the wearer can conveniently and easily learn which areas of the lenses to use for particular viewing tasks. After a couple of hours of use, the decals can simply be removed and discarded.

REFERENCES:
patent: 2724305 (1955-11-01), Brandt
patent: 2755553 (1956-07-01), Vaughan
patent: 2803884 (1957-08-01), Polley
patent: 2917971 (1959-12-01), Goddie et al.
patent: 3421233 (1969-01-01), Gaal
patent: 3687528 (1972-08-01), Maitenaz
patent: 3711191 (1973-01-01), Tagnon
patent: 3910691 (1975-10-01), Maitenaz
patent: 4056311 (1977-11-01), Winthrop
patent: 4115924 (1978-09-01), Kleinkopf
"Comparing the Invisibles", Opthmalic Dispensing, Clifford W. Brooks, O.D., Feb., 1978, pp. 164-166.

Affiliated with

Also associated with

Rating

Teaching device for progressive power lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Teaching device for progressive power lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Teaching device for progressive power lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1232171