Ophthalmic lens simulation system and method

• US 7,914,148 B2
• Filed: 11/15/2006
• Issued: 03/29/2011
• Est. Priority Date: 11/15/2005
• Status: Active Grant

• Current Assignee: Carl Zeiss Vision Incorporated (Carl-Zeiss-Stiftung)
• Original Assignee: Carl Zeiss Vision Incorporated (Carl-Zeiss-Stiftung)
• Inventors: Freeland, Warwick, Fisher, Scott
• Primary Examiner(s): Mack; Ricky L
• Assistant Examiner(s): PINKNEY, DAWAYNE
• Application Number:
  US12/084,976
• Publication Number:
  US 20080316427A1
• Time in Patent Office: 1,595 Days
• Field of Search: 351/233, 351/200, 351/203, 351/205, 351/211, 351/246
• US Class Current: 351/233
• CPC Class Codes: A61B 3/028 for testing visual acuity; for determination of refraction, e.g. phoropters
• CPC Class Codes: G06F 2111/02 CAD in a network environment, e.g. collaborative CAD or distributed simulation
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

A method of simulating an optical effect, and/or characteristic of a selected ophthalmic lens design for a wearer is disclosed. In an embodiment, the method includes retrieving simulation data for the selected ophthalmic lens design and processing the simulation data to generate output image data for an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design. The output image is displayed, using a head-mounted display worn by the wearer, for viewing by the wearer.

A system for simulating an optical effect, and/or characteristic of a selected ophthalmic lens design for a wearer is also disclosed.

Claims

1. A method of simulating an optical effect and/or characteristic of a selected ophthalmic lens design for a wearer, the method including:

retrieving simulation information for the selected ophthalmic lens design;

processing the simulation information to generate output image data for an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design;

displaying, using a head-mounted lens simulator unit worn by the wearer, the output image for viewing by the wearer; and

wherein the simulated optical effect and/or characteristic includes the approximate visual experience that would be experienced by the wearer when viewing through an ophthalmic lens corresponding to the selected ophthalmic lens design.

2. A method according to claim 1 wherein the optical effect includes a simulated optical effect due one or more simulated optical parameters of the selected ophthalmic lens design, the one or more simulated parameters including:

(a) sphere (Rx);

(b) cylinder (Cyl);

(c) axis;

(d) addition power,

(e) astigmatism;

(f) prism; and

(g) base.

3. A method according to claim 1 wherein the simulation information includes one or more of:

(a) lens model information for the selected ophthalmic lens design;

or

(b) input image information.

4. A method according to claim 3 wherein the lens model information includes one or more of:

(a) information in the form of a blur matrix; and

(b) information in the form of a distortion matrix.

5. A method according to claim 3 wherein the input image information includes one of:

(a) an image obtained from a camera; and

(b) a computer generated image.

6. A method according to claim 1 wherein simulated characteristic include lens features, and wherein the output image includes the lens features superimposed over an input image.

7. A method according to claim 6 wherein the simulated lens features include lens boundaries.

8. A method according to claim 6 wherein the selected lens is a progressive addition ophthalmic lens and wherein the lens features include one or more of:

(a) distance zone features;

(b) corridor features; and

(c) near zone features.

9. A method according to claim 6 wherein the selected lens is a bi-focal lens and wherein the features include the bi-focal segments.

10. A method of simulating an optical effect and/or characteristic of a selected ophthalmic lens design for a wearer, the method including:

providing an input image capturing a viewing activity undertaken by the wearer;

retrieving simulation information for the selected ophthalmic lens design;

processing the input image and the simulation information to generate, for display to the wearer, an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design;

displaying, using a head-mounted display worn by the wearer, the output image for viewing by the wearer; and

wherein the simulated optical effect and/or characteristic includes the approximate visual experience that would be experienced by the wearer when viewing through an ophthalmic lens corresponding to the selected ophthalmic lens design.

11. A system for simulating the optical effect and/or characteristic of an ophthalmic lens design for a wearer, the system including:

a simulation file containing simulation information for the selected ophthalmic lens design;

a programmed computer including a simulation engine for processing the simulation information to generate output image data for an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design;

a lens simulator including a head-mountable display for displaying the output image to the wearer; and

wherein the simulated optical effect and/or characteristic includes the approximate visual experience that would be experienced by the wearer when viewing through an ophthalmic lens corresponding to the selected ophthalmic lens design.

12. A system for simulating an optical effect and/or characteristic of a selected ophthalmic lens design for a wearer, the system including processor and associated memory device for storing a series of instructions to cause the processor to:

retrieve simulation information for the selected ophthalmic lens design;

process the simulation information to generate output image data for an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design;

displaying, using a head-mounted lens simulator unit worn by the wearer, the output image for viewing by the wearer; and

wherein the simulated optical effect and/or characteristic includes the approximate visual experience that would be experienced by the wearer when viewing through an ophthalmic lens corresponding to the selected ophthalmic lens design.

13. Computer software for use in a system for simulating an optical effect and/or characteristic of a selected ophthalmic lens design for a wearer, the system including a processor and associated memory device for storing the computer software including a series of instructions to cause the processor to:

retrieve simulation information for the selected ophthalmic lens design;

process the simulation information to generate output image data for an output image simulating the optical effect and/or characteristic of the selected ophthalmic lens design;

displaying, using a head-mounted lens simulator unit worn by the wearer, the output image for viewing by the wearer; and

wherein the simulated optical effect and/or characteristic includes the approximate visual experience that would be experienced by the wearer when viewing through an ophthalmic lens corresponding to the selected ophthalmic lens design.