Spectacles and method for determining the pupil center of both of the wearer's eyes

• US 9,668,648 B2
• Filed: 05/05/2014
• Issued: 06/06/2017
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: Viewpoint Sicherheitsforschung- Blickforschung GmbH
• Original Assignee: Viewpoint Sicherheitsforschung- Blickforschung GmbH
• Inventors: Pfleger, Ernst, Pfleger, Christoph
• Primary Examiner(s): HASAN, MOHAMMED A
• Application Number:
  US14/913,633
• Publication Number:
  US 20160206196A1
• Time in Patent Office: 1,128 Days
• Field of Search: 351200-246, 351107, 351128-134
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/0091 Fixation targets for viewing direction
• CPC Class Codes: A61B 3/111 for measuring interpupillary distance
• CPC Class Codes: A61B 3/113 for determining or recording eye movement
• CPC Class Codes: A61B 3/145 by video means
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02C 11/10 Electronic devices other than hearing aids
• CPC Class Codes: G02C 13/005 Measuring geometric parameters required to locate ophtalmic lenses in spectacles frames apparatus for testing or instruments for examining the eyes per se A61B3/00; machines or devices and accessories for grinding the edges of lenses using spectacles as a template B24B9/144
• CPC Class Codes: G02C 5/02 Bridges; Browbars; Intermediate bars nose engaging-surfaces G02C5/12
• CPC Class Codes: G02C 5/12 Nose pads; Nose-engaging surfaces of bridges or rims
• CPC Class Codes: G02C 5/126 exchangeable or otherwise fitted to the shape of the nose
• CPC Class Codes: G02C 7/081 Ophthalmic lenses with variable focal length

Abstract

The invention relates to a pair of spectacles (1) comprising a frame (2), said frame (2) having at least one lens-receiving opening (3) for a lens, and having a right nose section (5) of the frame and a left nose section (6) of the frame, wherein a right eye-capturing camera (7) is arranged in the right nose section (5) of the frame, and a left eye-capturing camera (8) is arranged in the left nose section (6) of the frame.

Claims

1. A pair of spectacles, comprising:

a frame including at least one opening for receiving a disk-like structure, said frame including a right nose frame part and a left nose frame part;

a right eye acquisition camera arranged in the right nose frame part and configured to prepare a right eye video comprised of successive right individual images, wherein the right eye acquisition camera is oriented on a right region arranged between 20 mm and 40 mm, in particular between 25 mm and 35 mm, to the right of a center of the spectacles and spaced at a distance between 10 mm and 20 mm from the right eye acquisition camera, said left eye acquisition camera being oriented on a left region arranged between 20 mm and 40 mm, in particular between 25 mm and 35 mm, to the left of the center of the spectacles and spaced at a distance between 10 mm and 20 mm from the left eye acquisition camera; and

a left eye acquisition camera arranged in the left nose frame part and configured to prepare a left eye video comprised of successive left individual images.

2. The spectacles of claim 1, wherein at least one of the right eye acquisition camera and the left eye acquisition camera is arranged so as to be pivotable about at least one axis, in particular about two axes, in the right nose frame part or the left nose frame part, respectively.

3. The spectacles of claim 1, further comprising at least one nose bridge receptacle configured to accommodate at least one nose bridge, designed in particular as a saddle bridge.

4. The spectacles of claim 1, further comprising at least one field of vision camera arranged on the frame.

5. The spectacles of claim 4, wherein the at least one field of vision camera is arranged in a region between the right nose frame part and the left nose frame part.

6. The spectacles of claim 1, wherein the frame has a U-shaped nose receptacle recess for arranging the spectacles on the nose of a human, the right nose frame part and the left nose frame part laterally bordering the nose receptacle recess.

7. A pair of spectacles, comprising:

a frame including at least one opening for receiving a disk-like structure, said frame including a right nose frame part and a left nose frame part;

a right eye acquisition camera arranged in the right nose frame part and configured to prepare a right eye video comprised of successive right individual images; and

a left eye acquisition camera arranged in the left nose frame part and configured to prepare a left eye video comprised of successive left individual images;

a data processing unit connected to the right eye acquisition camera and the left eye acquisition camera;

a data interface;

an energy accumulator configured to supply energy to the right eye acquisition camera, the left eye acquisition camera, the data processing unit, and the data interface,

wherein preferably the data processing unit and the data interface are arranged in a first earpiece, which is connected to the frame, and

wherein preferably the energy accumulator is arranged in a second earpiece, which is connected to the frame.

8. The spectacles of claim 7, further comprising at least one illuminant, in particular an LED, arranged on a front side of the spectacles, said illuminant being connected to the data processing unit and the energy accumulator.

9. The spectacles of claim 7, wherein the disk-like structure is a lens having a pre-definable changeable geometry and is connected to the data processing unit.

10. A system, comprising:

a pair of spectacles, said spectacles comprising a frame including at least one opening for receiving a disk-like structure, said frame including a right nose frame part and a left nose frame part, a right eye acquisition camera arranged in the right nose frame part and configured to prepare a right eye video comprised of successive right individual images, a left eye acquisition camera arranged in the left nose frame part and configured to prepare a left eye video comprised of successive left individual images, and at least one nose bridge receptacle; and

a pre-definable number of different shaped nose bridges, each configured for accommodation in the at least one nose bridge receptacle to enable pre-definable adaptation of the spectacles to different persons by replacement of the nose bridges.

11. A method for determining pupil center points of both eyes of a human wearing a pair of spectacles, comprising:

acquiring the right pupil of the human by a right eye acquisition camera of the spectacles to thereby prepare a right eye video comprised of successive right individual images;

ascertaining right pupil coordinates of a focal point in correspondence to a right pupil center point from the right individual images;

acquiring the left pupil of the human by a left eye acquisition camera of the spectacles to thereby prepare a left eye video comprised of successive left eye images;

ascertaining pupil coordinates of a focal point in correspondence to a left pupil center point of the left pupil from the left eye images;

storing or outputting the right pupil center point and/or the left pupil center point;

arranging a reflective surface opposite to the human wearing the spectacles to calibrate the spectacles;

activating an illuminant arranged on a front side of the spectacles; and

having the human observe an image of the illuminant on the reflective surface, thereby moving the head of the human into pre-definable positions while fixing the image of the illuminant.

12. The method of claim 11, wherein ascertaining the pupil coordinates for each individual image of the eye video, includes an image recognition program to automatically

register contrasts of the pupil to the surroundings,

search of the individual image all points which are darker than a set degree of darkness,

acquire and delimit a dark area corresponding to the pupil using these points, and

ascertain the focal point of the dark area, which corresponds to the pupil center point having the pupil coordinates.

13. A method for determining a spontaneous blink of a human wearing a pair of spectacles, comprising:

acquiring the right pupil of the human by a right eye acquisition camera of the spectacles to thereby prepare a right eye video comprised of successive right individual images;

ascertaining right pupil coordinates of a focal point in correspondence to a right pupil center point from the right individual images;

acquiring the left pupil of the human by a left eye acquisition camera of the spectacles to thereby prepare a left eye video comprised of successive left eye images;

ascertaining pupil coordinates of a focal point in correspondence to a left pupil center point of the left pupil from the left eye images;

storing or outputting the right pupil center point and/or the left pupil center point;

detecting the right eyelids of the human in the successive right eye images;

detecting the left eyelids of the human in the successive left eye images; and

generating and outputting and/or storing a report of a spontaneous blink, when a right eyelid conceals the right pupil center point in a right eye image and a left eyelid conceals the left pupil center point in a left eye image.

14. The method of claim 13, further comprising measuring a visual downtime between the beginning of a spontaneous blink and the end of the same spontaneous blink, and generating and/or outputting a warning message when a visual downtime exceeds a limiting time.

15. The method of claim 13, wherein ascertaining the pupil coordinates for each individual image of the eye video, includes an image recognition program to automatically

register contrasts of the pupil to the surroundings,

search of the individual image all points which are darker than a set degree of darkness,

acquire and delimit a dark area corresponding to the pupil using these points, and

ascertain the focal point of the dark area, which corresponds to the pupil center point having the pupil coordinates.

16. A method for ascertaining a focus distance of a human wearing a pair of spectacles, comprising:

acquiring the right pupil of the human by a right eye acquisition camera of the spectacles to thereby prepare a right eye video comprised of successive right individual images;

ascertaining right pupil coordinates of a focal point in correspondence to a right pupil center point from the right individual images;

acquiring the left pupil of the human by a left eye acquisition camera of the spectacles to thereby prepare a left eye video comprised of successive left eye images;

ascertaining pupil coordinates of a focal point in correspondence to a left pupil center point of the left pupil from the left eye images;

storing or outputting the right pupil center point and/or the left pupil center point;

ascertaining an intraocular distance from the pupil coordinates;

assigning a right viewing angle to the right pupil coordinates;

assigning a left viewing angle to the left pupil coordinates; and

ascertaining the focus distance from an interocular distance, the right viewing angle, and the left viewing angle.

17. The method of claim 16, further comprising storing the focus distance in particular as a switching pulse.

18. The method of claim 16, further comprising taking at least one value, which is associated with the focus distance, from a data memory of a data processing unit for geometrical determination of a lens, which is arranged in a lens receptacle opening of the spectacles and has a pre-definable variable geometry, and setting the geometry of the lens as a function of the value.

19. The method of claim 16, wherein ascertaining the pupil coordinates for each individual image of the eye video, includes an image recognition program to automatically

register contrasts of the pupil to the surroundings,

search of the individual image all points which are darker than a set degree of darkness,

acquire and delimit a dark area corresponding to the pupil using these points, and

ascertain the focal point of the dark area, which corresponds to the pupil center point having the pupil coordinates.