PATENT CLAIM ANALYSIS

Application Number: 16137637
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["353", "101000"]

Abstract:
An imaging optical system includes a plurality of lens groups each moving such that spaces between each one of the plurality of lens groups change during a zooming. The imaging optical system conjugates a conjugate point on a magnification side and an intermediate imaging position, and conjugates a conjugate point on a reduction side and the intermediate imaging position. The imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side. The first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group. The imaging optical system satisfies condition (4) below: |{(1− βcw 2 )×β crw 2 }/{(1−β fw 2 )×β frw 2 }|<0.2   (4)

Claim (Index 1):
An imaging optical system comprising a plurality of lens groups, the plurality of lens groups each including at least one lens and moving such that spaces between each one of the plurality of lens groups change during a zooming action,\n wherein the imaging optical system conjugates a conjugate point on a magnification side of the imaging optical system and an intermediate imaging position inside the imaging optical system, and conjugates a conjugate point on a reduction side of the imaging optical system and the intermediate imaging position, wherein the imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side, wherein the first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group moving along the optical axis during a focusing action from an infinity focus state to a proximate focus state, wherein the imaging optical system satisfies condition (4) below:\n |{(1 \u2212\u03b2cw 2 )\u00d7\u03b2 crw 2 }/{(1 \u2212\u03b2fw 2 )\u00d7\u03b2 frw 2 }|<0.2 \u2003\u2003(4) \n where, \u03b2cw is a paraxial lateral magnification, at a wide angle end, of the field curvature correction lens group moving along the optical axis when the amount of the field curvature is changed,\n \u03b2crw is a paraxial lateral magnification, at the wide angle end, of every lens located farther on the reduction side than the field curvature correction lens group moving along the optical axis when the amount of the field curvature is changed, \n \u03b2fw is a paraxial lateral magnification, at the wide angle end, of the focusing lens group moving along the optical axis during the focusing action, and \n \u03b2frw is a paraxial lateral magnification, at the wide angle end, of every lens located farther on the reduction side than the focusing lens group moving along the optical axis during the focusing action.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 97.0
- Lexical Diversity: 2.14103
- Patent Class: 353.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14288421', '14044430', '13418430', '15183494', '14542963']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6972180363979054
- 35 USC 102 Novelty (BERT): 0.5212594805026409
- Combined Prediction Score: 0.6796221808083789
- Mean Citation Score: 308.1547260000001
- Max Citation Score: 318.27667
- Similarity Product: 243.633793555218

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test