Method for correcting centering parameters and/or an axial position and corresponding computer program and methods

Patent metadata

Field	Value
Publication number	US-11448903-B2
Application number	US-201916728147-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Jun 28, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

Methods and devices for correcting centering parameters and/or an axial position of a spherocylindrical refraction on the basis of a habitual head position are disclosed. A representation of the head of a user in a head posture or a representation of the head with a spectacle frame in a spectacle frame alignment are displayed. To correct the spectacle parameter based on a corrected head posture and/or a corrected spectacle frame alignment, the corrected head posture and/or the corrected spectacle frame alignment is determined by at least partially manually correcting a head posture in the displayed representation of the head and/or of the spectacle frame alignment in the displayed representation of the head with the spectacle frame. A representation of the head of a user is shown on a display, thereby allowing intuitive adjustment of a habitual head position.

First claim

The invention claimed is:

1. A computer-implemented method for correcting a spectacle parameter, the method comprising:
obtaining a spherocylindrical refraction of a person including an axis position with the head of the person being in a first head posture;
displaying a representation of the head in the first head posture or a representation of the head in the first head posture with a spectacle frame in a first spectacle frame alignment;
determining at least one of a corrected head posture or a corrected spectacle frame alignment by at least partially manually correcting at least one of the first head posture in the displayed representation of the head towards a habitual head posture or of the first spectacle frame alignment in the displayed representation of the head with the spectacle frame towards a habitual spectacle frame alignment;
determining an angle of inclination of the head of the person in the corrected head posture compared to the first head posture or the angle of inclination between the first spectacle frame alignment and the corrected spectacle frame alignment;
obtaining a corrected axis position of the spherocylindrical refraction by correcting the provided axis position of the spherocylindrical refraction in an amount corresponding to the determined angle of inclination; and
providing the corrected axis position of the spherocylindrical refraction for a production of a spectacle lens.

2. The method as claimed in claim 1 , wherein the spectacle parameter comprises a centration parameter.

3. The method as claimed in claim 1 , wherein the displaying is effected with a display means.

4. The method as claimed in claim 1 , further comprising:
effecting the at least partially manual correction with input means,
wherein the representation of the head provides a visual aid for the at least partially manual correction.

5. The method as claimed in claim 1 , wherein the displaying of the representation of the head comprises at least one from the following group:
displaying at least one side view of the head, wherein the correction of the head posture includes an adjustment of a vertical head inclination of the at least one side view;
displaying a 3D head representation, wherein the correction of the head posture includes an alignment of the displayed 3D representation;
displaying a front view of the head, wherein the correction of the head posture includes setting a lateral inclination of the head; or
displaying the front view of the head with the spectacle frame in place, wherein the correction of the spectacle frame alignment includes marking the spectacle frame alignment in the displayed representation of the head.

6. The method as claimed in claim 5 , wherein the correction includes a correction of the axis position according to at least one of the lateral head inclination or the marked spectacle frame alignment.

7. The method as claimed in claim 1 , wherein the correction of the head posture comprises an input of an angle characterizing the head posture, and wherein the method further comprises:
changing the display of the representation of the head depending on the angle that is input.

8. The method as claimed in claim 1 , wherein the method further comprises:
recording at least one image of the person, wherein the correction of the head posture is carried out based on the at least one image and the representation of the head.

9. The method as claimed in claim 8 , wherein the correction of the head posture comprises an identification of points in the at least one image and in the representation of the head that correspond to one another, respectively.

10. The method as claimed in claim 1 , wherein a correction of the axis position includes on the basis of a registration of the irises of the eyes in an image of the head when determining the spherocylindrical refraction and the irises of the eyes in the image of the head when measuring a centration parameter.

11. A method for producing spectacle lenses utilizing the spectacle parameters corrected by the method as claimed in claim 1 .

12. A computer-implemented method for correcting a spectacle parameter, comprising:
obtaining a spectacle parameter configured to adapt spectacles to a head of a person with the head of the person being in a first head posture;
displaying a representation of the head in the first head posture or a representation of the head with a spectacle frame in a first spectacle frame alignment;
determining an angle of inclination of the head of the person in the corrected head posture compared to the first head posture or the angle of inclination between the first spectacle frame alignment and the corrected spectacle frame alignment,
wherein the spectacle parameter includes an axis position of a spherocylindrical refraction, and wherein the correction of the axis position includes a registration of the irises of the eyes in an image of the head when determining the spherocylindrical refraction and the irises of the eyes in an image of the head in the first head posture when measuring a centration parameter;

obtaining a corrected axis position of the spherocylindrical refraction by correcting the obtained axis position of the spherocylindrical refraction in an amount of the determined angle of inclination; and
providing the corrected axis position of the spherocylindrical refraction for a production of a spectacle lens.

13. A computer-readable non-transitory storage medium comprising a computer program for correcting a spectacle parameter and having a program code which, when executed on a processor, causes a method of:
obtaining a spherocylindrical refraction of a person including an axis position with the head of the person being in a first head posture;
displaying a representation of the head in the first head posture or a representation of the head in the first head posture with a spectacle frame in a first spectacle frame alignment;
determining an angle of inclination of the head of the person in the corrected head posture compared to the first head posture or the angle of inclination between the first spectacle frame alignment and the corrected spectacle frame alignment,
wherein the spectacle parameter includes an axis position of a spherocylindrical refraction, and wherein the correction of the axis position includes a registration of the irises of the eyes in an image of the head when determining the spherocylindrical refraction and the irises of the eyes in an image of the head in the first head posture when measuring a centration parameter;
obtaining a corrected axis position of the spherocylindrical refraction by correcting the obtained axis position of the spherocylindrical refraction in an amount of the determined angle of inclination; and
providing the corrected axis position of the spherocylindrical refraction for a production of a spectacle lens,
to be carried out.

14. A computer for correcting a spectacle parameter, comprising:
a processor; and
a memory with a computer program comprising instructions which, upon execution of the program by a computer, cause the computer to carry out a method of:
obtaining the spectacle parameter configured to adapt spectacles to a head of a person with the head of the person being in a first head posture;
displaying a representation of the head in the first head posture or a representation of the head with a spectacle frame in a first spectacle frame alignment;
determining an angle of inclination of the head of the person in the corrected head posture or the angle of inclination between the first spectacle frame alignment and the corrected spectacle frame alignment,
wh

Assignees

• Zeiss Carl Vision Int Gmbh

Inventors

• Gamperling Michael
• Breuninger Tobias
• Cabeza-Guillén Jesús-Miguel

Classifications

• G06F30/12

  characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD · CPC title

• G06F2111/02

  CAD in a network environment, e.g. collaborative CAD or distributed simulation · CPC title

• G02C13/005 Primary

  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 title