PATENT CLAIM ANALYSIS

Application Number: 15575399
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-09
Patent Classification: ["359", "683000"]

Abstract:
A zoom optical system (ZL) comprises a first lens group (G 1 ) having positive refractive power, a second lens group (G 2 ) having negative refractive power, a third lens group (G 3 ) having positive refractive power, a fourth lens group (G 4 ) having negative refractive power, and a fifth lens group (G 5 ) having positive refractive power that are disposed in order from an object. Upon zooming from a wide angle end state to a telephoto end state, the lens groups are moved along an optical axis to change distances between the lens groups. The fifth lens group (G 5 ) comprises at least one positive lens and at least one negative lens. Certain conditional expressions are satisfied.

Claim (Index 24):
The zoom optical system according to  claim 1 , wherein at least one optical surface in the lens group closest to the image with respect to the first lens group is provided with an antireflection film, and\n the antireflection film includes at least one layer with nd of 1.30 or less where nd denotes a refractive index with respect to a d line (wavelength \u03bb=587.6 nm).

Metadata:
- Claim Count in Document: 54.0
- Percentile: 91.0
- Lexical Diversity: 2.25806
- Patent Class: 359.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15299451', '15256740', '15161252', '15256738', '14911065']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8789598260805112
- 35 USC 102 Novelty (BERT): 0.5704515831999989
- Combined Prediction Score: 0.84810900179246
- Mean Citation Score: 537.269708
- Max Citation Score: 553.3888
- Similarity Product: 370.7024911083221

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

Dataset: test