EssilorLuxottica has filed a patent for a phoropter, a device used to test an individual’s eyes when observing a target. The phoropter includes two optical units for each eye, a partially reflecting mirror, and an image acquiring device to capture images of the eyes looking at the target. The patent aims to improve vision correction testing. GlobalData’s report on EssilorLuxottica gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on EssilorLuxottica, Opthalmic lenses 3D Printing was a key innovation area identified from patents. EssilorLuxottica's grant share as of September 2023 was 60%. Grant share is based on the ratio of number of grants to total number of patents.

Phoropter for testing an individual's eyes when observing a target

Source: United States Patent and Trademark Office (USPTO). Credit: EssilorLuxottica SA

A recently filed patent (Publication Number: US20230309817A1) describes a phoropter, which is a device used to test an individual's eyes when observing a target along an optical path. The phoropter includes two optical units, one for each eye, with entry and exit apertures and an optical system for providing different vision correction powers. The device also has moving means to adjust the relative position of the optical units. A partially reflecting mirror is situated along the optical path, and an image acquiring device, such as two cameras, is directed towards the mirror to acquire images of the individual's eyes looking at the target through the optical units.

The patent claims also describe various features of the phoropter, including the use of a lever or motor to adjust the relative position of the optical units. In some embodiments, the phoropter includes a support element to hold the individual's head in position. The image acquiring device can be used to detect the positions of the individual's pupils and control the motor accordingly. The partially reflecting mirror is held in place by a frame with three or four tongues.

Additionally, the patent describes an optometry device that includes the phoropter and a display unit to produce a target visible through the exit apertures of the optical units. The display unit includes a screen to display a test picture and an optical element that can be moved between an active position on the optical path and a retracted position. This allows the target to be produced at a variable distance from the exit apertures. The optometry device may also include a second screen to display a second picture, which can be superimposed with the target using a main partially reflecting mirror. The main partially reflecting mirror is held in place by a mirror support, which may include a casing.

Overall, this patent describes a phoropter and an optometry device with various features for testing an individual's eyes and producing visual targets. The use of cameras, levers, motors, and partially reflecting mirrors allows for precise adjustments and accurate measurements during eye examinations.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.