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 1):
A zoom optical system comprising in order from an object:\n a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; a fifth lens group having positive refractive power, wherein upon zooming from a wide angle end state to a telephoto end state, the lens groups are moved along an optical axis to change a distance between the first lens group and the second lens group, a distance between the second lens group and the third lens group, a distance between the third lens group and the fourth lens group, and a distance between the fourth lens group and the fifth lens group, the fifth lens group includes at least one positive lens and at least one negative lens, and the following conditional expressions are satisfied:\n 0.80<(\u2212 f 4)/ f 5< w< 2.50 \n FNw< 3.50 \n where, f4 denotes a focal length of the fourth lens group, f5w denotes a composite focal length of an optical system on an image side including the fifth lens group in the wide angle end state, and FNw denotes an F number of the whole system in the wide angle end state.

Metadata:
- Claim Count in Document: 54.0
- Percentile: 91.0
- Lexical Diversity: 2.25806
- Patent Class: 359.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15299451', '15256740', '15161252', '15256738', '14911065']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8592601471140584
- 35 USC 102 Novelty (BERT): 0.6017906210195156
- Combined Prediction Score: 0.8335131945046041
- Mean Citation Score: 537.269708
- Max Citation Score: 553.3888
- Similarity Product: 506.5376872787476

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