PATENT CLAIM ANALYSIS

Application Number: 15885504
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-06
Patent Classification: ["356", "445000"]

Abstract:
Methods and systems are presented to reduce the illumination spot size projected onto a measurement target and associated spillover onto area surrounding a measurement target. In one aspect, a spatial light modulator (SLM) is located in the illumination path between the illumination light source and the measurement sample. The SLM is configured to modulate amplitude, phase, or both, across the path of the illumination light to reduce wavefront errors. In some embodiments, the desired state of the SLM is based on wavefront measurements performed in an optical path of the metrology system. In another aspect, an illumination aperture having an image plane tilted at an oblique angle with respect to a beam of illumination light is employed to overcome defocusing effects in metrology systems that employ oblique illumination of the measurement sample. In some embodiments, the illumination aperture, objective lens, and specimen are aligned to satisfy the Scheimpflug condition.

Claim (Index 3):
The metrology system of  claim 1 , wherein the illumination aperture is an illumination slit that is oriented at an oblique angle with respect to the beam of illumination light passing through the illumination slit.

Metadata:
- Claim Count in Document: 12.0
- Percentile: 86.0
- Lexical Diversity: 1.93023
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14708454', '15271179', '14960121', '15214814', '14833370']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7376169792699531
- 35 USC 102 Novelty (BERT): 0.5406135965144778
- Combined Prediction Score: 0.7179166409944056
- Mean Citation Score: 270.972264
- Max Citation Score: 389.0947
- Similarity Product: 346.40341828653817

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