Wearable binocular optoelectronic device for measuring light sensitivity threshold of a user

Patent metadata

Field	Value
Publication number	US-11826100-B2
Application number	US-201916969626-A
Country	US
Kind code	B2
Filing date	Feb 13, 2019
Priority date	Feb 13, 2018
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

Disclosed is a binocular optoelectronic device wearable by a user for measuring a light sensitivity threshold of the user, including: a diffuser configured to face eyes of the user; at least one light source for emitting light toward the diffuser. The diffuser includes predetermined parameters allowing to provide a quasi-homogeneous light diffusion to at least one eye of the user from light emitted by the at least one light source.

First claim

The invention claimed is:

1. A binocular optoelectronic device wearable by a user to measure a light sensitivity threshold of the user, the device comprising:
a concave device configured to face eyes of the user, the concave device defining a cavity, the concave device comprising at least two concave portions having a center of curvature distinct from each other, each of the concave portions being configured to be disposed on each side of a planar central portion and in front of one of the eyes of the user when the binocular optoelectronic device is worn; and
at least one light source configured to emit light toward said concave device,
wherein the concave device comprises predetermined parameters comprising at least one of shape, geometry, and material of the concave device, the predetermined parameters providing a quasi-homogeneous light diffusion with a homogeneity of at least 55% to both of the eyes of the user from the light emitted by said at least one light source.

2. The binocular optoelectronic device according to claim 1 , wherein the homogeneity is determined based on the luminance distribution diffused by the concave device and projected on a planar measuring surface, and
wherein the homogeneity is determined with respect to at least one predetermined area of said planar measuring surface.

3. The binocular optoelectronic device according to claim 2 , wherein said at least predetermined area is circular.

4. The binocular optoelectronic device according to claim 3 , wherein the homogeneity is at least 55% with a predetermined area equal or lower than 4245 mm 2 .

5. The binocular optoelectronic device according to claim 1 , wherein at least one of said at least two concave portions is at least partially spherical, the center of curvature of said at one of said at least two concave portions being the center of the sphere.

6. The binocular optoelectronic device according to claim 1 , wherein the concave device is configured to dispose the center of curvature of one of the concave portions between one of the eyes of the user and said concave portion.

7. The binocular optoelectronic device according to claim 1 , wherein the binocular optoelectronic device is dimensioned to receive therein an optical device worn by the user.

8. The binocular optoelectronic device according to claim 1 , wherein said at least one light source is disposed at the periphery of the concave device.

9. The binocular optoelectronic device according to claim 1 , wherein said at least one light source comprises a light emitting axis oriented toward at least one of said centers of curvature.

10. The binocular optoelectronic device according to claim 1 , wherein the concave device comprises an internal surface having an albedo of at least 80%.

11. The binocular optoelectronic device according to claim 1 , further comprising:
a sensor configured to determine at least one user parameter representative of the light sensitivity of the user; and
a controller configured to one of: control the luminance of light emitted by said at least one light source, control the duration of the light emission, control spatial repartition of the light emission, and control the spectrum of the light emission.

12. A method for measuring a light sensitivity threshold of a user, the method comprising:
providing the user with the binocular optoelectronic device according to claim 1 ;
providing the user with the quasi-homogeneous light diffusion from the light emitted by said at least one light source; and
determining a light sensitivity threshold of the user depending on at least one user parameter.

13. The method according to claim 12 , wherein the providing the user with the quasi-homogeneous light diffusion comprises varying the luminance of light emitted by said at least one light source.

14. The method according to claim 13 , further comprising, during the varying:
detecting a first user parameter of the at least one user parameter, the first user parameter being representative of a first light sensitivity value of the user at a first luminance value, and
detecting a second user parameter of the at least one user parameter, the second user parameter being representative of a second light sensitivity value of the user at a second luminance value,
wherein said light sensitivity threshold is determined depending on at least one of the first and second user parameters.

15. The binocular optoelectronic device according to claim 1 , wherein the homogeneity is at least 60%.

16. The binocular optoelectronic device according to claim 1 , wherein the homogeneity is at least 70%.

17. The binocular optoelectronic device according to claim 4 , wherein the homogeneity is at least 74% with a predetermined area equal or lower than 1060 mm 2 .

18. The binocular optoelectronic device according to claim 4 , wherein the homogeneity is at least 76% with a predetermined area equal or lower than 470 mm 2 .

19. The binocular optoelectronic device according to claim 4 , wherein the homogeneity is at least 84% with a predetermined area equal or lower than 115 mm 2 .

20. The binocular optoelectronic device according to claim 4 , wherein the homogeneity is at least 85% with a predetermined area equal or lower than 29 mm 2 .

Assignees

• Essilor Int

Inventors

• Perrot Stéphane
• Debieuvre Amandine
• Chene Sylvain
• Caleff Florian
• Baillon Loïc
• Scherlen Anne-Catherine
• Marie Sarah
• Montecelo Susana

Classifications

• A61B3/063 Primary

  for testing light sensitivity, i.e. adaptation · CPC title

• A61B3/0008

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

• G01N21/01

  Arrangements or apparatus for facilitating the optical investigation · CPC title

• G01N21/4738

  Diffuse reflection (precedence is given to G01N21/55 - G01N21/57 if specular component is taken into consideration), e.g. also for testing fluids, fibrous materials · CPC title

• G01N2021/0112

  Apparatus in one mechanical, optical or electronic block · CPC title