Management system and method of an active lens

Patent metadata

Field	Value
Publication number	US-10317703-B2
Application number	US-201515540995-A
Country	US
Kind code	B2
Filing date	Dec 23, 2015
Priority date	Dec 30, 2014
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

The invention relates to the field of management of an active lens and more particularly to a management system comprising an active lens (1), a first sensor (2) arranged to measure data relating to an incident light on the active lens, a control unit (4) designed for controlling the active lens according to data measured by the first sensor, wherein the management system further comprises a second sensor (3) arranged to measure data relating to a light transmitted from the incident light through the active lens, the control unit being further designed to adjust, according to said data measured by the second sensor, the control already performed according to said data measured by the first sensor. Thus the management system allows taking into account data relating to the light passing through the active lens as a feedback in order to finely control the active lens.

First claim

The invention claimed is:

1. A management system of an active lens comprising:
an active lens having a front face and a rear face;
an input interface receiving first data from at least one of:
a first sensor arranged to measure data relating to at least an incident light on the front face of the active lens, and
a first light source applied towards the front face and providing data;

a second sensor arranged to measure second data relating to a light transmitted through the active lens and at the rear face; and
control circuitry configured to control the active lens at least according to the first data, wherein
the control circuitry is further configured to finely adjust, according to said second data, the control previously performed according to the first data.

2. The management system according to claim 1 , wherein the active lens is an active ophthalmic lens and wherein the management system further comprises at least one of:
a distance sensor arranged to measure distance from the active ophthalmic lens to an object to be viewed through the active ophthalmic lens; and
an actimetry sensor arranged to measure data relating to an activity of a wearer of the active ophthalmic lens, in order for the control circuitry to take into account at least one of the measured distance from the active ophthalmic lens and the measured data relating to the activity of the wearer while controlling the active ophthalmic lens.

3. The management system according to claim 1 , wherein:
the active lens comprises an optical filter for filtering at least one of harmful and/or chronobiological blue light, and
each of the first and second sensors comprises at least one harmful and chronobiological blue light sensor, respectively.

4. The management system according to claim 1 , wherein:
the active lens comprises one or more optical filters for filtering partially or totally one or more wavelengths of a visible spectrum,
the first sensor comprises a light sensor designed for measuring data relating to at least one of spectral distribution and energetic power of the incident light, and
the second sensor comprises a light sensor designed for measuring data relating to at least one of the spectral distribution and the energetic power of the light transmitted from the incident light through the active lens.

5. The management system according to claim 1 , wherein:
the active lens comprises one or more polarizers for selecting light of at least one specific polarization of the incident light,
the first sensor comprises a camera designed for capturing a first image as said data relating to the incident light on the active lens,
the second sensor comprises a camera designed for capturing a second image as said data relating to the light transmitted from the incident light through the active lens, and
the control circuitry being further configured to
compare the first and second images with each other; and
control the active lens at least according to a result of said comparison.

6. The management system according to claim 1 , wherein the active lens is an active ophthalmic lens and wherein:
the active ophthalmic lens comprises at least one chronobiological light source oriented towards a wearer's eye, and
each of the first and second sensors comprises a wavelength sensor arranged to measure data relating to an amount of chronobiological light over a period of time.

7. The management system of claim 1 , wherein the management system is a component of an eyewear, and wherein the active lens is an active ophthalmic lens.

8. The management system according to claim 1 , wherein the input interface receives first data from both a first sensor arranged to measure data relating to at least an incident light on the front face of the active lens and a first light source applied towards the front face and providing data.

9. An active lens of a management system having a front face and a rear face, and comprising at least:
a first sensor arranged to measure first data relating to at least an incident light on the front face of the active lens; and
a second sensor arranged to measure second data relating to a light transmitted at least from the incident light through the active lens, wherein the system further comprises:
control circuitry that is configured to finely adjust, according to said second data, control previously performed according to the first data.

10. The active lens of claim 9 , wherein:
the active lens comprises an optical filter for filtering at least one of harmful and chronobiological blue light, and
each of the first and second sensors comprises at least one harmful and chronobiological blue light sensor.

11. The active lens of claim 9 , wherein:
the active lens comprises one or more optical filters for filtering partially or totally one or more wavelengths of a visible spectrum,
the first sensor comprises a light sensor designed for measuring data relating to at least one of spectral distribution and energetic power of the incident light, and
the second sensor comprises a light sensor designed for measuring data relating to at least one of the spectral distribution and the energetic power of the light transmitted from the incident light through the active lens.

12. The active lens of claim 9 , wherein:
the active lens comprises one or more polarizers for selecting light of at least one specific polarization of the incident light,
the first sensor comprises a camera designed for capturing a first image as said data relating to the incident light on the active lens, and
the second sensor comprises a camera designed for capturing a second image as said data relating to the light transmitted from the incident light through the active lens.

13. A management method of an active lens comprising:
performing at least one of measuring and providing first data-relating to at least one of an incident light on the active lens with a first sensor, and a first light source, respectively;
measuring second data relating to a light transmitted through the active lens and at the rear face, with a second sensor; and
controlling the active lens at least according to at least one of the measured and provided first data,
wherein the controlling of the active lens further includes finely adjusting, according to said second data, the control previously performed according to said first data.

14. The management method according to claim 13 , further comprising, with the active lens being an active ophthalmic lens:
measuring at least one of a distance from the active ophthalmic lens to an object to be viewed through the active ophthalmic lens with a distance sensor and
data relating to an activity of a wearer of the active ophthalmic lens, with an actimetry sensor,
wherein controlling the active lens at least according to at least one of the measured and provided data comprises taking into account at least one of the measured distance and the measured data.

15. The management method according to claim 13 , wherein:
measuring the data comprises measuring at least one of harmful and chronobiological blue light, wherein each of the first and second sensors comprises a sensor operable to measure the at least one harmful and chronobiological blue light, and
controlling the active lens comprises filtering at least one of harmful and chronobiological blue light respectively, wherein the active lens comprises an optical filter operable to filter at the at least one of the harmful and the chronobiological blue light.

16. The management method according to claim 13 , wherein:
measuring data w

Assignees

• Essilor Int

Inventors

• Rousseau Denis
• Barrau Coralie
• Cohen Tannoudji Denis
• Perrot Stephane
• Bouchier Aude
• Cano Jean-Paul
• Biver Claudine
• Archambeau Samuel
• Ballet Jerome
• Escaich David

Classifications

• G02C7/12

  Polarisers · CPC title

• G02C7/101 Primary

  having an electro-optical light valve (electro-optical elements per se G02F) · CPC title

• G02C7/02

  Lenses; Lens systems {; Methods of designing lenses} · CPC title

• G02C7/104

  having spectral characteristics for purposes other than sun-protection · CPC title