PATENT CLAIM ANALYSIS

Application Number: 15753811
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["250", "50400R"]

Abstract:
Disclosed is a suppression filter having a profile defining at least two reflective surface levels, each reflected surface level being separated by a separation distance. The separation distance is such that the reflective suppression filter is operable to substantially prevent specular reflection of radiation at a first wavelength and at a second wavelength incident on said reflective suppression filter. Also disclosed is a radiation collector, radiation source and lithographic apparatus comprising such a suppression filter, and to a method of determining a separation distance between at least two reflective surface levels of a suppression filter.

Claim (Index 41):
A radiation collector configured for use in a radiation source operative to generate EUV radiation by irradiating fuel with laser radiation to generate a plasma, comprising:\n a reflection suppression filter configured to suppress reflection of a first component of a first wavelength and a second component of a second wavelength of radiation incident on the reflective suppression filter, the first wavelength being different from the second wavelength, the reflection suppression filter comprising:\n a first area at a first reflective surface level and a second area at a second reflective surface level, the first area being adjacent the second area; \n wherein the first reflective surface level and second first reflective surface level have a separation distance, determined in a direction substantially perpendicularly to the first area and to the second area; and \n wherein the separation distance is made such so as to cause substantial destructive interference between the first component reflected off the first area and the first component reflected off the second area, as well as substantial destructive interference between the second component reflected off the first area and the second component reflected off the second area.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 1.90566
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13433923', '15284513', '13059057', '13058783', '15320749']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7028233153155887
- 35 USC 102 Novelty (BERT): 0.4705317290849103
- Combined Prediction Score: 0.679594156692521
- Mean Citation Score: 194.77180600000003
- Max Citation Score: 206.82559
- Similarity Product: 170.5915741394544

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