PATENT CLAIM ANALYSIS

Application Number: 15778251
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-01
Patent Classification: ["359", "745000"]

Abstract:
A zoom optical system comprises, in order from an object: a first lens group (G 1 ) having positive refractive power; a second lens group (G 2 ) having negative refractive power; and a subsequent group (GR) including at least one lens group. Upon zooming, distances between the first lens group (G 1 ) and the second lens group (G 2 ) and between the second lens group (G 2 ) and the subsequent group (GR) change. The subsequent group (GR) comprises a focusing group (Gfc) having negative refractive power for focusing. The first lens group (G 1 ) comprises a 1-1st lens that has positive refractive power and is disposed closest to the object. The focusing group comprises a lens (L 37 ) having positive refractive power and a lens (L 38 ) having negative refractive power. Following conditional expressions are satisfied: 1.00< fFP /(− fFN )<2.00 1.80< f 1/ fw <2.50 where, fFP denotes a focal length of a lens with largest positive refractive power in the focusing group, fFN denotes a focal length of a lens with largest negative refractive power in the focusing group, and f1 denotes a focal length of the first lens group, and fw denotes a focal length of the zoom optical system in a wide angle end state.

Claim (Index 9):
A method for manufacturing a zoom optical system which comprises, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; and a subsequent group including at least one lens group,\n the method comprising a step of arranging the lens groups in a lens barrel so that: upon zooming, distances between the first lens group and the second lens group and between the second lens group and the subsequent group change; the subsequent group comprises a focusing group having negative refractive power for focusing, the first lens group comprises a 1-1st lens that has positive refractive power and is disposed closest to the object, the focusing group comprises at least one lens having positive refractive power and at least one lens having negative refractive power; and following conditional expressions are satisfied:\n 1.00< fFP /(\u2212 fFN )<2.00 \n 1.80< f 1/ fw< 2.50 \n where, fFP denotes a focal length of a lens with largest positive refractive power in the focusing group, fFN denotes a focal length of a lens with largest negative refractive power in the focusing group, and f1 denotes a focal length of the first lens group, and fw denotes a focal length of the zoom optical system in a wide angle end state.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 3.0
- Patent Class: 359.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15430027', '15984344', '15256740', '15299451', '15256738']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8787773310587155
- 35 USC 102 Novelty (BERT): 0.5751220809778661
- Combined Prediction Score: 0.8484118060506305
- Mean Citation Score: 517.4095580000002
- Max Citation Score: 522.2171
- Similarity Product: 446.3289788328767

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