PATENT CLAIM ANALYSIS

Application Number: 15763571
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["351", "159440"]

Abstract:
A diffractive multi-focal ophthalmic lens includes a novel structure and manufacturing method in which improvement in optical characteristics such as halo reduction is obtained. A diffractive multi-focal ophthalmic lens in which a plurality of focal points are set by a diffraction grating including a blaze shaped phase function in which a plurality of zone sequences are overlapped, wherein adopted is a structure expressed by a phase function in which an inclination of a blaze of a specific adjustment zone in a standard profile is reversed.

Claim (Index 4):
A diffractive multi-focal ophthalmic lens for which a diffraction grating comprising a blaze shaped phase function is configured by a plurality of concentric zones for which a plurality of zone sequences with a zone radius given by Equation 4 are overlapped such that a plurality of focal points are set, wherein\n at least one adjustment zone is provided, the adjustment zone being described in at least one of (A), (B), and (C) listed below: (A) an adjustment zone defined by at least one of the zones configuring the diffraction grating, the zone having a zone pitch \u0394r that satisfies \u0394r\u22640.5\u00d7\u0394r max  with respect to a zone pitch \u0394r max  for a maximum pitch zone having a maximum zone pitch among the plurality of concentric zones, the adjustment zone being such that a blaze shaped phase function for which an inclination is reversed with respect to an inclination of the blaze shaped phase function in the maximum pitch zone is set; (B) an adjustment zone defined by at least one of the zones configuring the diffraction grating, the zone having a zone area S that satisfies S\u22640.5\u00d7S max  with respect to a zone area S max  for a maximum area zone having a maximum zone area among the plurality of concentric zones, the adjustment zone being such that a blaze shaped phase function for which an inclination is reversed with respect to an inclination of the blaze shaped phase function in the maximum area zone is set; and (C) an adjustment zone defined by at least one of the zones configuring the diffraction grating, the zone having a half-value width \u0394D that satisfies \u0394D\u22652\u00d7\u0394D min  with respect to a half-value width \u0394D min  in a narrowest intensity distribution zone for which a half-value width of an intensity distribution on an optical axis of a light emitted from that zone is narrowest among the plurality of concentric zones, the adjustment zone being such that a blaze shaped phase function for which an inclination is reversed with respect to an inclination of the blaze shaped phase function in the narrowest intensity distribution zone is set. r n = r 1 2 + 2 \ue89e ( n - 1 ) \ue89e \u03bb P [ Equation \ue89e \ue89e 4 ] r n : nth zone radius of a certain zone sequence r 1 : 1st zone radius of the zone sequence n: Natural number P: Addition power based on 1st order diffracted light of the zone sequence \u03bb: Design wavelength

Metadata:
- Claim Count in Document: 41.0
- Percentile: 90.0
- Lexical Diversity: 1.69231
- Patent Class: 351.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15500589', '14377819', '14377029', '12625364', '09032954']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6235263540419246
- 35 USC 102 Novelty (BERT): 0.5383405068767182
- Combined Prediction Score: 0.6150077693254039
- Mean Citation Score: 346.612148
- Max Citation Score: 424.14484
- Similarity Product: 331.13598116134165

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test