Adjustable progressive lens and design method

Patent metadata

Field	Value
Publication number	US-11086144-B2
Application number	US-201916657702-A
Country	US
Kind code	B2
Filing date	Oct 18, 2019
Priority date	Apr 19, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

An adjustable spectacle lens has a first lens element and a second lens element arranged one behind the other along an optical axis of the lens. The first and second lens element are configured to vary their combined optical properties when moved relative to each other in a direction transverse to the optical axis. The adjustable lens element is an adjustable progressive lens element. The first and second lens element are configured to vary at least one of a size and a power of the near, the distance, and the intermediate portion relative to each other, when the first lens element and the second lens element are moved relative to each other in the direction transverse to the optical axis. The first and second lens elements can be configured to conjointly provide a near, a distance and an intermediate portion that can be changed depending on the visual task.

First claim

What is claimed is:

1. An adjustable spectacle lens comprising:
a first lens element and a second lens element arranged one behind the other along an optical axis of the adjustable spectacle lens; wherein the first lens element and the second lens element conjointly define combined optical properties;
wherein said first lens element and said second lens element are the adjustable spectacle lens' only two lens elements;
wherein the first lens element and the second lens element are configured to vary the combined optical properties when moved relative to each other in a direction transverse to the optical axis;
wherein the adjustable spectacle lens is an adjustable progressive spectacle lens, wherein the first lens element and the second lens element are configured to conjointly provide a near portion, a distance portion and an intermediate portion;
wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a first position relative to each other, a first predetermined configuration of usable near, distance and intermediate portions;
wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a second position relative to each other, a second predetermined configuration of usable near, distance and intermediate portions; and,
the first lens element and the second lens element being configured to vary at least one of:
(a) a size of the near portion, the distance portion, and the intermediate portion relative to each other, and
(b) a power of the near portion, the distance portion, and the intermediate portion relative to each other,

when the first lens element and the second lens element are moved relative to each other in a direction transverse to the optical axis.

2. An adjustable spectacle lens comprising:
a first lens element and a second lens element arranged one behind the other along an optical axis of the adjustable spectacle lens; wherein the first lens element and the second lens element conjointly define combined optical properties;
wherein said first lens element and said second lens element are the adjustable spectacle lens' only two lens elements;
wherein the first lens element and the second lens element are configured to vary the combined optical properties when moved relative to each other in a direction transverse to the optical axis;
wherein the adjustable spectacle lens is an adjustable progressive spectacle lens, wherein the first lens element and the second lens element are configured to conjointly provide a near portion, a distance portion and an intermediate portion;
wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a first position relative to each other, a first predetermined configuration of usable near, distance and intermediate portions;
wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a second position relative to each other, a second predetermined configuration of usable near, distance and intermediate portions; and, the first lens element and the second lens element being configured to vary at least one of an add power of the near portion, a size of the near portion, a size of the distance portion, and a size of the intermediate portion, when the first lens element and the second lens element are moved relative to each other in a direction transverse to the optical axis.

3. The adjustable spectacle lens of claim 1 , wherein the first lens element and the second lens element are movable between the first position and the second position relative to each other in a vertical direction in an as-worn orientation.

4. The adjustable spectacle lens of claim 1 , wherein the first lens element and the second lens element are configured to vary an add power of the near portion when moved relative to each other in the direction transverse to the optical axis.

5. The adjustable spectacle lens of claim 1 , wherein the first lens element and the second lens element are configured to vary at least one of a size of the near portion, a size of the distance portion and a size of the intermediate portion, when moved relative to each other in the direction transverse to the optical axis.

6. The adjustable spectacle lens of claim 1 , wherein the first lens element has a back surface and the second lens element has a front surface; wherein the back surface of the first lens element faces the front surface of the second lens element; wherein the back surface of the first lens element corresponds to the front surface of the second lens element and wherein the back surface of the first lens element and the front surface of the second lens element are shaped such that they are movable with respect to each other.

7. The adjustable spectacle lens of claim 6 , wherein the back surface of the first lens element and the front surface of the second lens element are corresponding spherical surfaces.

8. The adjustable spectacle lens of claim 1 , wherein the first lens element and the second lens element are movable relative to each other between a first fixed position and a second fixed position.

9. The adjustable spectacle lens of claim 8 , wherein the first fixed position is a main position and the second fixed position is an auxiliary position; and wherein the first lens element and the second lens element are configured to conjointly provide lower aberrations in the main position than in the auxiliary position.

10. The adjustable spectacle lens of claim 1 , wherein the first lens element and the second lens element are configured to be moved relative to each other by a distance out of a group of distances: between 0.1 mm and 6 mm, between 0.2 mm and 4 mm, between 0.5 mm and 3 mm, and between 1 mm and 2 mm, in a direction transverse to the optical axis.

11. The adjustable spectacle lens of claim 1 , further comprising means for moving at least one of the lens elements relative to the other in a direction transverse to the optical axis of the lens.

12. A computer implemented method for designing an adjustable progressive spectacle lens, the adjustable progressive spectacle lens including a first lens element and a second lens element arranged one behind the other along an optical axis of the adjustable progressive spectacle lens; wherein the first lens element and the second lens element are the adjustable spectacle lens' only two lens elements; wherein the first lens element and the second lens element are configured to conjointly provide a near portion, a distance portion and an intermediate portion; wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a first position relative to each other, a first predetermined configuration of usable near, distance and intermediate portions; wherein the first lens element and the second lens element are configured to conjointly and simultaneously provide, in a second position relative to each other, a second predetermined configuration of usable near, distance and intermediate portions; and wherein the first lens element and the second lens element are configured to vary at least one of (a) a size of the near portion, the distance portion, and the intermediate portion relative to each other and (b) a power of the near portion, the distance portion, and the intermediate portion relative to each other, when the first lens element and the second lens element are moved relative to each other in a direction transverse to the optical axis; the method comprising the steps of:
obtaining data descriptive of the first predet

Assignees

• Zeiss Carl Vision Int Gmbh
• Spratt Ray Steven

Inventors

• Spratt Ray Steven
• Latzel Sabine

Classifications

• G02C7/06

  bifocal; multifocal {; progressive (G02C7/041 takes precedence)} · CPC title

• G02C7/081 Primary

  Ophthalmic lenses with variable focal length · CPC title

• G02C7/027

  considering wearer's parameters · CPC title

• G02C7/063

  Shape of the progressive surface · CPC title

• G02C2202/06

  Special ophthalmologic or optometric aspects · CPC title