PATENT CLAIM ANALYSIS

Application Number: 15760749
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["359", "684000"]

Abstract:
Comprising a positive first lens group G 1  disposed at a most object side, a negative intermediate group G 2  disposed at an image side of the first lens group G 1 , a positive focusing group G 3  disposed at an image side of the intermediate group G 2 , the focusing group G 3  being moved upon focusing, and a positive image side group G 4  disposed at an image side of the focusing group G 3 ; upon varying magnification, a distance between the first lens group G 1  and the intermediate group G 2 , a distance between the intermediate group G 2  and the focusing group G 3  and a distance between the focusing group G 3  and the image side group G 4  being varied; and a predetermined conditional expression being satisfied. Whereby a variable magnification optical system having excellent optical performance and a focusing lens group reduced in weight in order to attain high speed focusing operation, and others are provided.

Claim (Index 15):
A method for manufacturing a variable magnification optical system comprising steps of arranging a first lens group disposed at a most object side and having positive refractive power, an intermediate group disposed at an image side of the first lens group and having negative refractive power, a focusing group disposed at an image side of the intermediate group and having positive refractive power, the focusing group being moved upon focusing, and an image side group disposed at an image side of the focusing group and having positive refractive power, such that, upon varying magnification, a distance between the first lens group and the intermediate group, a distance between the intermediate group and the focusing group and a distance between the focusing group and the image side group are varied; and\n arranging such that the following conditional expression is satisfied:\n 3.00< f 1 fw/ff< 9.00 \n where f1fw denotes a composite focal length from the first lens group to the focusing group in the wide angle end state, and ff denotes a focal length of the focusing group.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 90.0
- Lexical Diversity: 3.01724
- Patent Class: 359.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15418770', '15418753', '15418777', '15418775', '15418773']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8601315021304231
- 35 USC 102 Novelty (BERT): 0.5471750798264386
- Combined Prediction Score: 0.8288358599000246
- Mean Citation Score: 432.100646
- Max Citation Score: 444.1483
- Similarity Product: 385.1427521533848

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