Optical center locator for spectacles

Details Optical center locator for spectacles Optical center locator for spectacles

1977-06-17

1978-10-24

Phillips, Charles E.

Geometrical instruments

Gauge

Spectacle

33174A, 403162, A61B 310

Patent

active

041213467

ABSTRACT:
A device for use in fitting ophthalmic lenses to spectacles frames. Horizontal and vertical measurements from optical centers of the lenses to their extreme lateral nasal and inferior edges are obtained by attaching the device to the edge of rimless lenses of a properly patient fitted sample rimless spectacles or rims of a similarly fitted rimmed spectacles frame intended to receive the lenses. The sample rimless spectacles or rimmed frame is then placed in the normal position of use upon the patient and a wand component of the fitting device is used to indicate the proper lens optical center location relative to the patient's pupils. Extreme lateral and inferior lens edge measurements are taken from the wand and forwarded to the lens finishing shop for edging of the lenses to final size and shape.

REFERENCES:
patent: 534793 (1895-02-01), Helvey
patent: 1263713 (1918-04-01), Smith
patent: 2022202 (1935-11-01), Hersch
patent: 2325569 (1943-07-01), Hancock et al.
patent: 2677894 (1954-05-01), Belgard
patent: 2884832 (1959-05-01), Engelman

Affiliated with

Also associated with

Rating

Optical center locator for spectacles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical center locator for spectacles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical center locator for spectacles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2331095