Multi-element prescription lenses with eye-tracking

Patent metadata

Field	Value
Publication number	US-11515469-B1
Application number	US-202017102698-A
Country	US
Kind code	B1
Filing date	Nov 24, 2020
Priority date	Mar 22, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

The disclosed embodiments are generally directed to optical systems. The optical systems may include a proximal lens that may transmit light toward an eye of a user. The optical systems may also include a distal lens that may, in combination with the proximal lens, correct for at least a portion of a refractive error of the eye of the user. The optical systems may further include a selective transmission interface. The selective transmission interface may couple the proximal lens to the distal lens, transmits light having a selected property, and does not transmit light that does not have the selected property. The optical system can also include an accommodative lens, such as a liquid lens. Various other methods, systems, and computer-readable media are also disclosed.

First claim

What is claimed is:

1. An optical system comprising:
a proximal lens configured to transmit light toward an eye of a user;
a distal lens configured to, in combination with the proximal lens, correct for at least a portion of a refractive error of the eye of the user;
a sensor;
an eye-tracking subsystem programmed to:
use an output of the sensor to track movement of the eye of the user;
track a gaze direction of both a right eye of the user and a left eye of the user; and
calculate, based on the gaze directions of the right and left eyes of the user, a depth at which the right and left eyes of the user are focused; and

a selective transmission interface that:
couples the proximal lens to the distal lens;
transmits light having a selected property; and
does not transmit light that does not have the selected property, wherein the distal lens comprises an accommodative lens, the eye-tracking subsystem is programmed to trigger a change in an optical power of the accommodative lens based on the depth at which the right and left eyes are focused, and the selective transmission interface is configured to reflect at least a portion of an infrared spectrum of light such that infrared light reflected from the eye of the user is diverted toward the sensor.

2. The optical system of claim 1 , wherein:
the selected property comprises a passband range of wavelengths;
the selective transmission interface transmits light within the passband range; and
the selective transmission interface is at least partially non-transmissive outside the passband range.

3. The optical system of claim 2 , wherein: the passband range comprises at least a portion of a visible spectrum of light.

4. The optical system of claim 1 , wherein:
the selected property comprises a polarization state of electromagnetic radiation; and
the selective transmission interface comprises a reflective polarizer configured to transmit light having a first polarization state and to reflect or absorb light having a second polarization state that is different than the first polarization state.

5. The optical system of claim 1 , wherein:
at least one of the distal lens and the proximal lens comprises a liquid lens; and
the selective transmission interface comprises a backplane of the liquid lens.

6. The optical system of claim 1 , wherein the selective transmission interface comprises a hot-mirror coating.

7. The optical system of claim 1 , wherein the selective transmission interface comprises an optical substrate having a plurality of concentric facets.

8. The optical system of claim 1 , wherein the proximal and distal lenses are configured as a doublet lens that reduces at least one of:
a chromatic aberration caused by the proximal lens; and
a chromatic aberration caused by the distal lens.

9. The optical system of claim 1 , further comprising an eyewear frame dimensioned to secure the proximal lens, the distal lens, and the selective transmission interface in front of the eye of the user.

10. The optical system of claim 1 , further comprising a head-worn display configured to transmit images through the distal lens, the selective transmission interface, and the proximal lens to the eye of the user.

11. The optical system of claim 10 , wherein the proximal and distal lenses are configured as a doublet lens that reduces a chromatic aberration of the display.

Assignees

• Meta Platforms Tech Llc

Inventors

• Ouderkirk Andrew John
• Hatzilias Karol Constantine
• Smyth Katherine Marie
• Sharma Robin

Classifications

• G02B27/0172

  characterised by optical features · CPC title

• A61B3/103

  for determining refraction, e.g. refractometers, skiascopes · CPC title

• A61B3/06

  for testing light sensitivity, e.g. adaptation; for testing colour vision · CPC title

• G02B27/0025

  for optical correction, e.g. distorsion, aberration · CPC title

• A61B3/0008

  provided with illuminating means (A61B3/117, A61B3/14 take precedence) · CPC title