PATENT CLAIM ANALYSIS

Application Number: 15947459
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["355", "056000"]

Abstract:
Fringe-projection autofocus system devoid of a reference mirror. Contributions to error in determination of a target surface profile caused by air non-uniformities are measured based on multiple measurements of the target surface performed at different wavelengths, and/or angles of incidence, and/or grating pitches and subtracted from the measured profile, rendering the system substantially insensitive to presence of air turbulence. Same optical beams forming a fringe irradiance pattern on target surface are used for measurement of the surface profile and reduction of measurement error by the amount attributed to air turbulence.

Claim (Index 10):
The exposure apparatus according to  claim 9 , further comprising\n a projection optical system configured to project the predetermined pattern on the workpiece, wherein the surface position adjustor is configured to reposition the first surface to an image plane of the projection optical system.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 91.0
- Lexical Diversity: 1.62712
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14480810', '13801961', '13794353', '13793507', '14593190']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6939561594189081
- 35 USC 102 Novelty (BERT): 0.4744467239222997
- Combined Prediction Score: 0.6720052158692472
- Mean Citation Score: 187.3763
- Max Citation Score: 272.21752999999995
- Similarity Product: 257.95977484447417

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

Dataset: test