PATENT CLAIM ANALYSIS

Application Number: 16196530
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["355", "071000"]

Abstract:
The illumination optical system for illuminating an illumination target surface with light from a light source is provided with a polarization converting member which converts a polarization state of incident light to form a pupil intensity distribution in a predetermined polarization state on an illumination pupil of the illumination optical system; and a phase modulating member which is arranged in the optical path on the illumination target surface side with respect to the polarization converting member and which transmits light from the pupil intensity distribution so as to convert linearly polarized light thereof polarized in a first direction, into required elliptically polarized light and maintain a polarization state of linearly polarized light polarized in a second direction (X-direction or Y-direction) obliquely intersecting with the first direction, in order to reduce influence of retardation caused by a subsequent optical system between the polarization converting member and the illumination target surface.

Claim (Index 28):
An illumination optical system which illuminates an illumination target surface with illumination light, comprising:\n a polarization member arranged on an optical path of the illumination light, the polarization member configured to set a polarization state of first illumination light serving as first part of the illumination light into first linear polarization having a polarization direction along a first direction and set a polarization state of second illumination light serving as second part of the illumination light into second linear polarization having a polarization direction along a second direction, the second part being different from the first part, the second direction being different from the first direction; a reflecting surface arranged on the optical path of the illumination light, the reflecting surface configured to reflect the first illumination light and the second illumination light, the polarization direction of the first linear polarization serving as s-polarization or p-polarization with respect to the reflecting surface; and a phase member, on the optical path of the illumination light, arranged between the polarization member and the illumination target surface, the phase member configured to emit the second illumination light while providing a phase difference between polarization components in the second illumination light and emit the first illumination light while maintaining the polarization state of the first illumination light in the first linear polarization, polarization directions of the polarization components in the second illumination light being orthogonal to each other.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 98.0
- Lexical Diversity: 2.15278
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15390127', '13161877', '14563275', '15424085', '14124034']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.727941952254155
- 35 USC 102 Novelty (BERT): 0.5812146143869314
- Combined Prediction Score: 0.7132692184674326
- Mean Citation Score: 429.425554
- Max Citation Score: 487.9968
- Similarity Product: 483.726381225586

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