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CN-121986289-A - Spectacle lens comprising a ring-like structure and method

CN121986289ACN 121986289 ACN121986289 ACN 121986289ACN-121986289-A

Abstract

The invention relates to an ophthalmic lens comprising a plurality of annular structures, each annular structure having a uniform width, one or more of the annular structures each having a varying power, the ophthalmic lens being characterized in that the variation of the surface average power comprises one random component or more random components, said variation being along an annular path within said one annular structure or along an annular path within the same annular structure of each of the further annular structures.

Inventors

  • P.R. Sankaridurg

Assignees

  • 卡尔蔡司光学国际有限公司

Dates

Publication Date
20260505
Application Date
20241105
Priority Date
20231106

Claims (16)

  1. 1. An ophthalmic lens (101, 201) comprising a plurality of loop structures (102,103,104,202,203,303), each loop structure (102,103,104,202,203,303) of the plurality of loop structures (102,103,104,202,203,303) having a uniform width, each loop structure (102,103,104,202,203,303) of the plurality of loop structures (102,103,104,202,203,303) having a path within the same structure that starts from a point within the same structure, surrounds an unstructured domain (204, 304) of the same structure and ends again at the point, Each of the one (102,103,104,202,203,303) or more annular structures (102,103,104,202,203,303) of the plurality of annular structures (102,103,104,202,203,303) having a varying power, It is characterized in that the method comprises the steps of, The variation in surface average power comprises one random component or more random components along an annular path within said one annular structure (102,103,104,202,203,303) of the plurality of annular structures (102,103,104,202,203,303) or along an annular path within the same annular structure (102,103,104,202,203,303) of each of the more annular structures (102,103,104,202,203,303) of the plurality of annular structures (102,103,104,202,203,303), The random components are: i) The structural feature of the one annular structure (102,103,104,202,203,303) and even if the structural feature is known to change along a portion of the circumference of the one annular structure (102,103,104,202,203,303), there is no rule to predict the change in the structural feature along the circumference of the one annular structure (102,103,104,202,203,303), or Ii) a structural feature of each of the further plurality of ring structures (102,103,104,202,203,303), and even if a change in the structural feature along a portion of the circumference of the same ring structure (102,103,104,202,203,303) of the further plurality of ring structures (102,103,104,202,203,303) is known, there is no rule to predict a change in the structural feature along the circumference of the same ring structure (102,103,104,202,203,303) of the further plurality of ring structures (102,103,104,202,203,303), or Iii) A structural feature of the further plurality of loop structures (102,103,104,202,203,303) and even if a change in the structural feature along a circumference of a first loop structure (102,103,104,202,203,303) of the further plurality of loop structures (102,103,104,202,203,303) is known, there is no rule to predict a change in the structural feature along a circumference of a second loop structure (102,103,104,202,203,303) of the further plurality of loop structures (102,103,104,202,203,303).
  2. 2. The spectacle lens (101, 201) according to claim 1, wherein the one annular structure (102,103,104,202,203,303) consists of n segments, n being ≡2, or each annular structure of the further plurality of annular structures (102,103,104,202,203,303) consists of n segments, n being ≡2.
  3. 3. The spectacle lens (101, 201) according to claim 2, wherein the one random component is that the number n of the n segments is the same or different for each of the more annular structures (102,103,104,202,203,303).
  4. 4. A spectacle lens (101, 201) according to any one of the preceding claims 2 to 3, wherein the one random component is that each of the n segments has a random surface average power.
  5. 5. The spectacle lens (101, 201) according to any one of the preceding claims 2 to 4, wherein the one random component is that each of the n segments has a random length.
  6. 6. The spectacle lens (101, 201) according to any one of the preceding claims 2 to 5, wherein said one random component is selected from at least one of the following: a) The start of a segment of the n segments of the ring structure (102,103,104,202,203,303) of the further ring structures (102,103,104,202,203,303) is randomly shifted in circumferential direction with respect to the start of at least one other segment of the n' segments of at least one other ring structure (102,103,104,202,203,303) of the further ring structures (102,103,104,202,203,303), B) The end points of the n sections of the annular structures (102,103,104,202,203,303) of the further annular structures (102,103,104,202,203,303) are randomly displaced in circumferential direction with respect to the end points of at least one other section of the n' sections of at least one other annular structure (102,103,104,202,203,303) of the further annular structures (102,103,104,202,203,303).
  7. 7. The spectacle lens (101, 201) according to any one of the preceding claims 2 to 6, wherein the one random component is that each transition between adjacent ones of the n segments is a random transition.
  8. 8. The spectacle lens (101, 201) according to any one of the preceding claims 2 to 7, wherein the one random component is that the uniform width is a random uniform width of at least two annular structures (102,103,104,202,203,303) of the further plurality of annular structures (102,103,104,202,203,303).
  9. 9. The spectacle lens (101, 201) according to any one of the preceding claims 2 to 8, wherein a number k of different surface average powers of each of the n segments is repeated along a circumferential direction of the same annular structure (102,103,104,202,203,303), the number n of n segments being a multiple of the number k of different surface average powers, and the one random component is selected from at least one of: i) The random length of each segment n of the same ring structure (102,103,104,202,203,303), Ii) the start of a segment of the n segments of the ring structure (102,103,104,202,203,303) of the further ring structures (102,103,104,202,203,303) is randomly shifted in circumferential direction with respect to the start of at least one other segment of the n' segments of at least one other ring structure (102,103,104,202,203,303) of the further ring structures (102,103,104,202,203,303), Iii) The end points of the n sections of the annular structures (102,103,104,202,203,303) of the further annular structures (102,103,104,202,203,303) are randomly displaced in circumferential direction with respect to the end points of at least one other section of the n' sections of at least one other annular structure (102,103,104,202,203,303) of the further annular structures (102,103,104,202,203,303).
  10. 10. A data set comprising at least one of the following categories of data: (i) The digital representation of an ophthalmic lens (101, 201) according to any one of claims 1 to 9, configured for the purpose of manufacturing the use of an ophthalmic lens (101, 201) according to any one of claims 1 to 9, (Ii) Data containing computer readable instructions for controlling one or more manufacturing machines for producing an ophthalmic lens (101, 201) according to any one of claims 1 to 9.
  11. 11. A method configured for calculating digital twinning of an ophthalmic lens (101, 201) by a computer in order to use the digital twinning for manufacturing the ophthalmic lens (101, 201), the ophthalmic lens (101, 201) comprising a plurality of annular structures (102,103,104,202,203,303), each annular structure (102,103,104,202,203,303) having a uniform width, one annular structure (102,103,104,202,203,303) or more annular structures (102,103,104,202,203,303) of the plurality of annular structures (102,103,104,202,203,303) each having a varying power, the method characterized by, -I) determining a random component or more for one structural feature or more structural features of the one ring structure (102,103,104,202,203,303), or ii) determining a random component or more for one structural feature or more structural features of each of the more ring structures (102,103,104,202,203,303).
  12. 12. A computer program comprising instructions which, when executed by a computer, cause the computer to perform the method of claim 11.
  13. 13. A computer readable storage medium on which a computer program according to claim 12 is stored.
  14. 14. A data signal carrying the computer program according to claim 12.
  15. 15. The method of claim 11, further configured to manufacture the ophthalmic lens (101, 201) based on digital twinning of the ophthalmic lens (101, 201) calculated according to claim 11.
  16. 16. A computer configured to perform the method of claim 11.

Description

Spectacle lens comprising a ring-like structure and method Technical Field The present invention relates to an ophthalmic lens comprising a plurality of ring structures according to the preamble of claim 1 and to a method for calculating digital twinning of an ophthalmic lens according to the preamble of claim 11. Background PCT/CN2023/076348 discloses an ophthalmic lens comprising a central zone, one or more annular structures each having a uniform width. In lieu of, or in addition to, the one or more annular structures, the eyeglass lens includes one or more annular structures each having a variable surface power. Thus, one or more annular structures have varying power. WO 2023/275189 A1 in paragraph [00141] in combination with fig. 3 discloses that the optical power of the optical element 14 in the left quadrant Q3 and/or the lower quadrant Q4 may be higher than the optical power of the optical element in the right quadrant Q1 and/or the upper quadrant Q2. The average optical power of the optical elements in the left quadrant Q3 and/or the lower quadrant Q4 may be higher than the average optical power of the optical elements in the right quadrant Q1 and/or the upper quadrant Q2. WO 2023/275189 A1 in paragraph [00145] discloses that the optical element 14 can be configured such that along at least one section of the lens element, the average sphere power of the optical element varies (increases or decreases) from a point of the section towards the peripheral portion of the section. Three of the optical elements of fig. 3 have varying power. WO 2021/260642 A1 in paragraph [00155] in combination with fig. 4B discloses optical elements 422, 424, 426 of a single geometrically defined shape and/or contour in regions 404, 406, 408 of an ophthalmic lens surface 402. Sagittal power map 400B shows the power profile varying along each individual element. The tangential power map 400C shows that the power of each optical element (e.g., element 426) is different at the innermost edge 417 and the outermost edge 418. Paragraph [00155] further discloses that one or more regions of the ophthalmic lens can include a plurality of geometrically defined shaped and/or contoured optical elements that can be randomly distributed within one region and relative to another region. Paragraph [00163] discloses in connection with fig. 8 that an ophthalmic lens surface comprises a plurality of geometrically defined shapes and/or contours in a plurality of annular areas, for example. As illustrated in 800A, the dimensions of geometrically defined shaped and/or contoured optical elements within each region (e.g., elements 808a and 808c in region 808) and the dimensions of geometrically defined shaped and/or contoured optical elements across regions (e.g., elements 804a through 809a in regions 804 through 809) may have similar shapes, lengths (811), and widths (812). Paragraph [00231] discloses in connection with fig. 29K that the ophthalmic lens has a specific profile and a plurality of annular peripheral treatment priority zones 2966 formed by a plurality of geometrically defined shaped and/or contoured optical elements having a relatively higher positive power than the +2.5d vision priority zone. WO 2023/007459 A1 discloses in paragraph [0080] in connection with fig. 9 a lens having a layer 1100 comprising a plurality of concentric annular regions 1106a to 1106d, each annular region 1106a to 1106d comprising a plurality of GRIN optical elements 1102a to 1102d. GRIN optical elements (one of 1102 a-1102 d) are distributed around each annular region 1106 a-1106 d such that the positioning of GRIN optical element 1102b around one of the annular regions 1106b is out of phase with the positioning of GRIN optical elements (1102 a and 1102 c) in adjacent annular regions 1106a/1106 c. Problems to be solved Unlike PCT/CN2023/076348 which describes a spectacle lens comprising one or more annular structures each having a variable surface power, the problem to be solved by the present invention is to provide a spectacle lens aimed at minimizing the adaptability or habitual effect of the wearer of the spectacle lens. Disclosure of Invention This problem has been solved by an ophthalmic lens according to claim 1, a method according to claim 11. The spectacle lens comprising a plurality of annular structures, each of the plurality of annular structures having a uniform width, each of the plurality of annular structures having a path within the same structure that starts from a point within the same structure around an unstructured domain of the same structure and ends again at the point, the or each of the plurality of annular structures having a varying power, i.e. the or each of the plurality of annular structures having a varying power, characterized in that the variation of the surface average power comprises a random component or more random components along the annular path within the one of the plurality of annular structures or along the annu