Method of analysis to measure the spherical power in ophthalmic lenses

Alicia Bustillos-Trujillo; Gerardo Trujillo-Schiaffino; Didia P. Salas-Peimbert; Paloma G. Mendoza-Villegas

doi:10.1117/12.849059

3 December 2009 Method of analysis to measure the spherical power in ophthalmic lenses

Alicia Bustillos-Trujillo, Gerardo Trujillo-Schiaffino, Didia P. Salas-Peimbert, Paloma G. Mendoza-Villegas

Proceedings Volume 7499, Seventh Symposium Optics in Industry; 74990J (2009) https://doi.org/10.1117/12.849059
Event: Seventh Symposium on Optics in Industry, 2009, Guadalajara, Jalisco, Mexico

Abstract

In this paper we propose a new method of analysis to obtain the spherical power in ophthalmic lenses based on ray traces of geometric optics techniques, formation, capture and image processing. We determine the spherical power in ophthalmic lenses considering the total magnification of the optical system and the Gauss's formula. A simple, practical and easy to implement experimental setup is presented for the measurement of positives and negative lenses. The setup consists in a circular object displayed in a LCD monitor, the ophthalmic lens to be measured and a digital camera in order to send information to a PC containing the software algorithm which calculates and displays the spherical power.

Citation Download Citation

Alicia Bustillos-Trujillo, Gerardo Trujillo-Schiaffino, Didia P. Salas-Peimbert, and Paloma G. Mendoza-Villegas "Method of analysis to measure the spherical power in ophthalmic lenses", Proc. SPIE 7499, Seventh Symposium Optics in Industry, 74990J (3 December 2009); https://doi.org/10.1117/12.849059

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available