PATENT CLAIM ANALYSIS

Application Number: 15746164
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["356", "401000"]

Abstract:
An optical system for improving alignment measurement accuracy is discussed. The optical system includes first and second optical elements. The first optical element may be configured to change a first beam having a first polarization state into a second beam having a second polarization state. The second optical element may be configured to provide total internal reflection of the second beam and to change the second beam into a third beam having a third polarization state. The first, second, and third polarization states may be different from each other.

Claim (Index 9):
An alignment system comprising:\n an illumination system configured to provide a first beam having a first polarization state; and an optical system comprising:\n a first optical element configured to change the first beam into a second beam having a second polarization state; and \n a second optical element configured to:\n provide total internal reflection of the second beam; and \n change the second beam into a third beam having a third polarization state, \n \n wherein the first, second, and third polarization states are different from each other.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 86.0
- Lexical Diversity: 2.28571
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15023075', '15766427', '11177482', '12010819', '11101630']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7313614838755865
- 35 USC 102 Novelty (BERT): 0.4791211093723348
- Combined Prediction Score: 0.7061374464252613
- Mean Citation Score: 223.953238
- Max Citation Score: 228.52753
- Similarity Product: 187.92964729174253

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