Essilor eye refraction system using light field display

ChangeBridge: Patent Grants - Diagnosis & Surgery (A61B)

Published April 7th, 2026

Detected April 7th, 2026

Summary

USPTO granted Essilor International patent US12593975B2 for a system determining refraction features of both eyes using a light field display device with control circuitry that adjusts light fields based on individual optical aberrations. The patent covers technology for measuring and correcting vision for both eyes simultaneously and includes five inventors: Stephane Boutinon, Estelle Netter, Martha Hernandez-Castaneda, Konogan Baranton, and Gildas Marin.

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What changed

USPTO granted patent US12593975B2 to Essilor International for a system and method of determining refraction features of both eyes using a light field display device. The system includes localization of eye positions, selective light field generation for each eye, and control circuitry that adjusts light fields based on individual refraction parameters and optical aberrations. The patent contains 20 claims covering the dual-eye measurement technology.

Affected parties include manufacturers of optical measurement devices and vision correction equipment who should monitor this IP protection when developing competing products. Competitors in the eye refraction measurement, autorefractors, and vision testing equipment space may need to design around these claims or seek licensing agreements with Essilor International.

What to do next

Monitor for potential infringement by competitors in the optical measurement space
Review patent claims for licensing opportunities
Assess relevance to existing product development roadmaps

Source document (simplified)

← USPTO Patent Grants

System and method for determining refraction features of both first and second eyes of a subject

Grant US12593975B2 Kind: B2 Apr 07, 2026

Assignee

Essilor International

Inventors

Stephane Boutinon, Estelle Netter, Martha Hernandez-Castaneda, Konogan Baranton, Gildas Marin

Abstract

A system for determining refraction features of both first and second eyes of a subject including a light field display device, a system of localization of the positions of the first and second eyes of the subject, the light field display device generating a first light field directed selectively toward the first eye, and, respectively, a second light field directed selectively toward the second eye, control circuitry that adjusts the first light field as a function of at least a first refraction parameter associated with at least a first optical aberration for the first eye and the control circuitry adjusting said second light field as a function of at least a second refraction parameter associated with at least a second optical aberration for the second eye.