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 4):
The zoom optical system according to  claim 1 , wherein a following conditional expression is satisfied:\n 1.00< nFP/nFN< 1.20 where, nFP denotes a refractive index of a lens with largest positive refractive power in the focusing group, and nFN denotes a refractive index of a lens with largest negative refractive power in the focusing group.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 3.0
- Patent Class: 359.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15430027', '15984344', '15256740', '15299451', '15256738']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8909493517688398
- 35 USC 102 Novelty (BERT): 0.5769549618589823
- Combined Prediction Score: 0.8595499127778541
- Mean Citation Score: 517.4095580000002
- Max Citation Score: 522.2171
- Similarity Product: 444.4437050596357

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