Optical element for converting a single-vision lens to a progressive lens
Apparatus and methods are described including a corrective optical element having a thickness and/or a curvature that is different in different regions of the corrective optical element, such that the corrective optical element is configured, upon being adhered to any one of a plurality of differently-shaped optically-corrective single-vision lenses, to change a focal length of the optically-corrective single-vision lens differently in different regions of the optically-corrective single-vision lens. The corrective optical element is shapeable such that the corrective optical element can conform with a shape of any one of the plurality of differently-shaped optically-corrective single-vision lenses. Other applications are also described.
1. Apparatus for use with a plurality of differently-shaped optically-corrective single-vision lenses, the apparatus comprising:
a corrective optical element having a thickness and/or a curvature that is different in different regions of the corrective optical element, such that the corrective optical element is configured, upon being adhered to any one of the plurality of differently-shaped optically-corrective single-vision lenses, to change a focal length of the optically-corrective single-vision lens differently in different regions of the optically-corrective single-vision lens,
the corrective optical element being shapeable such that the corrective optical element can conform with a shape of any one of the plurality of differently-shaped optically-corrective single-vision lenses.
2. The apparatus according to claim 1 , wherein the corrective optical element is configured to convert the optically-corrective single-vision lens to which it is adhered, to a progressive lens.
3. The apparatus according to claim 1 , wherein the corrective optical element is configured to be adhered to one of the optically-corrective single-vision lens, at least partially using vacuum.
4. The apparatus according to claim 1 , further comprising a protective film configured to protect at least one side of the corrective optical element.
5. The apparatus according to claim 1 , further comprising one or more markers configured to outline an area on the corrective optical element that should not be cut.
6. The apparatus according to claim 1 , wherein the corrective optical element comprises at least one coating selected from the group consisting of: an anti-glare coating layer, and an anti-scratch coating.
7. The apparatus according to claim 1 , wherein the corrective optical element is larger than at least some of the optically-corrective single-vision lenses.
8. The apparatus according to claim 1 , further comprising one or more alignment markers configured to facilitate positioning of the corrective optical element on the optically-corrective single-vision lens.
9. The apparatus according to claim 8 , further comprising a protective film configured to protect at least one side of the corrective optical element, wherein the one or more alignment markers are marked on the protective film.
10. A method comprising:
identifying a progressive prescription for at least one lens of eyeglasses of a subject;
generating a lens having the progressive prescription by:
shaping a corrective optical element such as to conform with a shape of an optically-corrective single-vision lens; and
adhering the corrective optical element to the optically-corrective single-vision lens, such as to change a focal length of the single-vision lens differently in different regions of the single-vision lens,
wherein adhering the corrective optical element to the optically-corrective single-vision lens comprises adhering the corrective optical element to the optically-corrective single-vision lens at least partially using vacuum.
11. The method according to claim 10 , wherein the corrective optical element is larger than the optically-corrective single-vision lens.
12. The method according to claim 10 , further comprising cutting the corrective optical element to a size that fits the optically-corrective single-vision lens.
13. A method comprising:
identifying a progressive prescription for at least one lens of eyeglasses of a subject;
generating a lens having the progressive prescription by:
shaping a corrective optical element such as to conform with a shape of an optically-corrective single-vision lens;
positioning the corrective optical element with respect to the optically-corrective single-vision lens using one or more alignment markers, and
subsequently, adhering the corrective optical element to the optically-corrective single-vision lens, such as to change a focal length of the single-vision lens differently in different regions of the single-vision lens.
14. A method comprising:
identifying a progressive prescription for at least one lens of eyeglasses of a subject;
generating a lens having the progressive prescription by:
shaping a corrective optical element such as to conform with a shape of an optically-corrective single-vision lens; and
adhering the corrective optical element to the optically-corrective single-vision lens, such as to change a focal length of the single-vision lens differently in different regions of the single-vision lens,
wherein the corrective optical element comprises at least one coating selected from the group consisting of: an anti-glare coating layer, and an anti-scratch coating.