Methods and systems for augmented reality

Patent metadata

Field	Value
Publication number	US-11378803-B2
Application number	US-201916708970-A
Country	US
Kind code	B2
Filing date	Dec 10, 2019
Priority date	Apr 3, 2015
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

The present invention generally provides systems, methods and ophthalmic lenses for image display of a virtual image, such as the display of a holographic image.According to the invention, an ophthalmic lens is advantageously configured for optimizing the visualization of said displayed virtual images.

First claim

The invention claimed is:

1. An Ophthalmic lens supply system for providing an ophthalmic lens configured to be fitted onto a frame and worn by a wearer, said ophthalmic lens comprising a holographic mirror and said frame comprising a build-in image source configured for illuminating said holographic mirror so as to cause, upon reflection onto said holographic mirror, the visualization of a virtual image by the wearer, said ophthalmic lens being configured for correcting the wearer's virtual vision, said supply system comprising:
first processing means configured for placing an order of an ophthalmic lens, wherein said first processing means are located at a lens ordering side and comprise:
inputting means configured to input wearer prescription data;
inputting means configured to input frame data, wherein said frame data comprise at least one image source data;
second processing means configured for providing lens data based upon wearer prescription data, wherein said second processing means are located at a lens determination side and comprise outputting means configured for outputting said lens data, and
first transmission means configured for transmitting said wearer prescription data and for transmitting said frame data, from said first processing means to said second processing means;
manufacturing means configured for manufacturing an ophthalmic lens based upon lens data and frame data, wherein said manufacturing means are located at a lens manufacturing side; and
second transmission means configured for transmitting said lens data from said second processing means to said manufacturing means, wherein
said manufacturing means comprise means configured for recording the holographic mirror by performing holographic recording of a film of unrecorded holographic medium by generating interference between a reference beam and an illumination beam to provide the ophthalmic lens comprising the holographic mirror, wherein
the holographic recording is performed in an optical arrangement that takes into account at least the configuration of the frame, such that the illumination beam is configured to differentially record a plurality of areas on the film of unrecorded holographic medium, and wherein
each area corresponds to equal or distinct values of distance of visualization of said displayed virtual image by the wearer, or corresponds to equal or distinct directions of visualization of said displayed virtual image by the wearer.

2. A method for providing an ophthalmic lens configured to be fitted onto a frame and worn by a wearer, wherein said ophthalmic lens comprises a holographic mirror and wherein said frame comprises a build-in image source configured for illuminating said holographic mirror to cause, upon reflection onto said holographic mirror, visualization of a virtual image by the wearer, said ophthalmic lens being configured for correcting the wearer's virtual vision, said method comprising:
providing an ophthalmic lens having a front surface and a rear surface,
wherein said ophthalmic lens comprises a film of unrecorded holographic medium; and
performing holographic recording of said holographic medium by generating interference between a reference beam and an illumination beam to provide an ophthalmic lens comprising a holographic mirror, wherein the holographic recording is performed in an optical arrangement that takes into account at least the configuration of the frame, wherein
the optical arrangement is such that:
(i) the illumination beam is configured to differentially record a plurality of areas on the film of unrecorded holographic medium, wherein each area corresponds to equal or distinct values of distance of visualization of said virtual image by the wearer, or corresponds to equal or distinct directions of visualization of said virtual image by the wearer, and
(ii) the reference beam simulates the beam of the build-in image source to be used for illuminating said holographic mirror, to cause display of the virtual image to be visualized by the wearer when wearing the frame.

3. The method according to claim 2 , wherein the holographic recording further takes into account a distance of visualization of said displayed virtual image by the wearer when wearing the frame, or a direction of visualization of said displayed virtual image by the wearer when wearing the frame, or the number of areas of the holographic mirror for the visualization of said displayed virtual image by the wearer when wearing the frame.

4. The method according to claim 2 , wherein the wearer is ametropic, and wherein the ophthalmic lens is configured for correcting the wearer's ametropia for natural vision and is selected from single-vision lenses, multifocal lenses such as bifocal lenses and progressive addition lenses.

5. The method according to claim 2 , wherein, in the ophthalmic lens:
the unrecorded holographic medium is selected from dichromated gelatins and photopolymers, and
the film of unrecorded holographic medium is provided on the front surface of the ophthalmic lens, on the rear surface of the ophthalmic lens, or between the front surface and the rear surface of the ophthalmic lens.

6. The method according to claim 2 , wherein the optical arrangement is such that:
the illumination beam is configured to define a distance of visualization of said displayed virtual image by the wearer when wearing the frame, or a direction of visualization of said displayed virtual image by the wearer when wearing the frame, or the number of areas of the holographic mirror for the visualization of said displayed virtual image by the wearer when wearing the frame.

7. The method according to claim 2 , wherein the wearer is ametropic,
wherein said method is a method for providing a progressive addition lens, respectively a multifocal lens, respectively a single-vision lens, wherein
the ophthalmic lens is a progressive addition lens, respectively a multifocal lens, respectively a single-vision lens, and wherein
the holographic recording is performed so that the holographic mirror comprises at least an area for near vision and an area for far vision corresponding to distinct values of distance of visualization of displayed virtual image by the wearer.

8. The method according to claim 2 , wherein the wearer is ametropic,
wherein said method is a method for providing a single-vision lens, respectively a multifocal lens, respectively a progressive addition lens, wherein the ophthalmic lens is a semi-finished lens blank, wherein
the optical arrangement includes implementation of an auxiliary single-vision lens, respectively an auxiliary multifocal lens, respectively an auxiliary progressive addition lens, whose optical power takes into account the optical power required to correct the wearer's ametropia and the optical power of the semi-finished lens blank, and wherein
the auxiliary single-vision lens, respectively the auxiliary multifocal lens, respectively the auxiliary progressive addition lens, is for spatially configuring the reference beam or the illumination beam.

9. The method according to claim 2 , wherein the providing the ophthalmic lens further comprises an amplitude modulation cell selected from electrochromic cells, polarizing cells and photochromic cells, and wherein the method further comprises cutting the lens obtained from the performing holographic recording.

Assignees

• Essilor Int

Inventors

• Bouchier Aude
• Biver Claudine
• Cano Jean-Paul

Classifications

• G02C7/14

  Mirrors; Prisms · CPC title

• G02C7/086

  Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles · CPC title

• G02C2202/20

  Diffractive and Fresnel lenses or lens portions · CPC title

• G03H2270/21

  Curved bearing surface · CPC title

• G03H2001/0439

  for recording Holographic Optical Element [HOE] · CPC title