Anti-glare 3D glasses

• US 10,073,275 B2
• Filed: 09/25/2014
• Issued: 09/11/2018
• Est. Priority Date: 09/26/2013
• Status: Active Grant

• Current Assignee: Valeo Vision (Valeo SE)
• Original Assignee: Valeo Vision (Valeo SE)
• Inventors: Hue, David, Fleury, Benoist
• Primary Examiner(s): Hunter, Mishawn
• Application Number:
  US14/916,300
• Publication Number:
  US 20160209666A1
• Time in Patent Office: 1,447 Days
• CPC Class Codes: G02B 26/02 for controlling the intensity of light G02B26/004 takes precedence
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: G02B 30/25 using polarisation techniques
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F
• CPC Class Codes: G02F 1/1313 specially adapted for a particular application
• CPC Class Codes: H04N 13/341 using temporal multiplexing

Abstract

A pair of glasses equipped with two lenses and intended to be worn by a user, the lenses each comprising a screen capable of transmitting or occulting, at least partially, incident light intended to pass through the lenses toward the user, the glasses being configured to, in a first occulting mode, attenuate the intensity of the incident light by simultaneously occulting the two screens, and, in a second occulting mode, enable three-dimensional vision of data emitted by a display device, via alternated occultation of the two screens.

Claims

1. A pair of glasses to be worn by user, comprising:

two lenses, each comprising a screen configured to transmit or occult, at least partially, incident light passing through said lens toward said user; and

a controller configured to

in a first occulting mode, attenuate an intensity of said incident light by simultaneously causing both screens to occult said incident light,

in a second occulting mode, enable three-dimensional vision of data emitted by a display device, by causing said screens to alternate occultation, and

shift from the first occulting mode to the second occulting mode or from the second occulting mode to the first occulting mode based on a frequency of the incident light.

2. The glasses as claimed in claim 1, wherein the controller is further configured to, in said second occulting mode, cause the screens to alternate occultation in synchronization with an alternated emission of data towards each eye, at a frequency corresponding to an alternation frequency of said alternated emission of said data.

3. The glasses as claimed in claim 2, wherein, in said second occulting mode, the controller is further configured to cause the screens to simultaneously occult the incident light a preset frequency based on a transmission coefficient of said screen.

4. The glasses as claimed in claim 3, wherein said transmission coefficient is variable.

5. The glasses as claimed in claim 4, wherein the controller is further configured to adapt said transmission coefficient of said screens depending on said intensity of said incident light.

6. The glasses as claimed in claim 1, wherein, in said first occulting mode, the controller is configured to cause the simultaneous occultation of said screens at a preset frequency based on a transmission coefficient of said screens.

7. The glasses as claimed in claim 6, wherein said transmission coefficient is variable.

8. The glasses as claimed in claim 7, wherein the controller is further configured to adapt said transmission coefficient of said screens depending on said intensity of said incident light.

9. The glasses as claimed in claim 7, wherein said transmission coefficient is set by pulse width modulation.

10. The glasses as claimed in claim 6, wherein said transmission coefficient is set by pulse width modulation.

11. The glasses as claimed in claim 10, wherein said pulse width modulation is carried out at fixed frequency and with a variable duty cycle.

12. The glasses as claimed in claim 11, wherein the controller is further configured to control said variable duty cycle of each of said screens.

13. The glasses as claimed in claim 12, wherein the controller is configured to shift to the second occulting mode when the frequency of the incident light indicates that the incident light corresponding to a three-dimensional vision signal.

14. The glasses as claimed in claim 13, further comprising a photometric sensor configured to sense the frequency of a pulsed optical signal.

15. The glasses as claimed in claim 14, wherein said screens include a liquid-crystal layer arranged between said vertical polarization layer and said horizontal polarization layer.

16. The glasses as claimed in claim 1, wherein said alternated occultation of said lenses is achieved by pulse width modulation.

17. The glasses as claimed in claim 16, wherein said pulse width modulation is carried out at fixed frequency and with a variable duty cycle.

18. The glasses as claimed in claim 1, comprising a switch configured to select either the first occulting mode or the second occulting mode.

19. The glasses as claimed in claim 1, wherein said screens include a vertical polarization layer and a horizontal polarization layer.

20. The glasses as claimed in claim 1, wherein said screens include a microelectromechanical layer.