US 12,318,141 B2 · Apparatus and system for the performance of optometric measurements and method for adjusting the optical power of an adjustable lens

Abstract

An apparatus for performing optometric measurements includes an opto-adjustable lens, the optical power of which is adjustable, with the lens being controlled by a periodic signal configured for producing a periodic optical power wave over time. The apparatus also includes a component for the adjustment of the mean value of the periodic optical power wave. The apparatus further includes an optical projector system for projecting a plane of the opto-adjustable lens onto a plane external to the apparatus, and in that the periodic signal has an amplitude such that it produces an amplitude of the periodic optical power wave corresponding to a chromatic difference of focus between a first wavelength and a second wavelength of visible light which passes the opto-adjustable lens. A system for the performance of optometric measurements and a method for adjusting the optical power of an adjustable lens are related to the apparatus.

Claims18

Dependent claims

An apparatus for performing optometric measurements, the apparatus comprising:

an opto-adjustable lens having an adjustable optical power, said opto-adjustable lens being controlled by a periodic signal configured for producing a periodic optical power wave over time;
an actuator for adjusting the mean value of the periodic optical power wave by adjusting the geometry of the opto-adjustable lens;
wherein the apparatus further comprises
an optical projector system for projecting a plane of the opto-adjustable lens onto a plane external to the apparatus;
wherein the periodic signal has an amplitude such that it produces an amplitude of the periodic optical power wave corresponding to a chromatic difference of focus between a first wavelength and a second wavelength of visible light passing through the opto-adjustable lens;
wherein the plane external to the apparatus is a plane of a pupil of the eye of a subject, and the chromatic difference of focus is that which is produced in the eye of the subject when the subject looks through the apparatus.

3 more elements

A method for adjusting the optical power of an opto-adjustable lens, the method comprising the following steps:

making a subject look at a visual stimulus through an opto-adjustable lens the optical power of which is adjustable,
projecting the plane of the opto-adjustable lens onto a pupil of an eye of the subject;
controlling the opto-adjustable lens by means of a periodic signal and producing a periodic optical power wave the amplitude of which corresponds to a chromatic difference of focus produced in the eye of the subject between a first wavelength and a second wavelength of visible light, the visual stimulus comprising elements in at least two different colours, one of the at least two colours being a combination of the first wavelength and the second wavelength;
and
adjusting the mean value of the periodic optical power wave to reduce or eliminate chromatic effects and fluctuation of the visual stimulus perceived by the subject.

2 more elements

Dependencies are inferred from the claim text.

Apparatus and system for the performance of optometric measurements and method for adjusting the optical power of an adjustable lens

Life of this patent

Apparatus and system for the performance of optometric measurements and method for adjusting the optical power of an adjustable lens

Life of this patent

Abstract

Claims18