PATENT CLAIM ANALYSIS

Application Number: 15871926
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["355", "067000"]

Abstract:
A mirror, in particular for a microlithographic projection exposure apparatus, has an optically effective surface, a mirror substrate ( 205, 305 ), a reflection layer ( 220, 320 ), which is configured to provide the mirror with a reflectivity of at least 50% for electromagnetic radiation with a predetermined operating wavelength incident on the optically effective surface ( 200 a,  300 a ) at angles of incidence in relation to the respective surface normals of at least 65°, and a substrate protection layer ( 210, 310 ) which is arranged between the mirror substrate ( 205, 305 ) and the reflection layer ( 220, 320 ). The substrate protection layer has a transmission of less than 0.1% for EUV radiation.

Claim (Index 1):
An optical system of a microlithographic projection exposure apparatus comprising at least one mirror having an optically effective surface, wherein the mirror comprises:\n a mirror substrate; a reflection layer, which is configured such that the mirror has a reflectivity of at least 50% for electromagnetic radiation with a predetermined operating wavelength incident on the optically effective surface at an angle of incidence relative to respective surface normals of at least 65\u00b0; and a substrate protection layer which is arranged between the mirror substrate and the reflection layer, wherein the substrate protection layer has a transmission of less than 0.1% for extreme ultraviolet (EUV) radiation; wherein the mirror is arranged in the optical system such that the reflection angles in relation to the respective surface normals, which occur during operation of the optical system upon reflection of electromagnetic radiation at the mirror, are at least 50\u00b0.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 86.0
- Lexical Diversity: 2.06061
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15215123', '15262272', '14034069', '14032724', '14796612']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7097719521679305
- 35 USC 102 Novelty (BERT): 0.4755576995628268
- Combined Prediction Score: 0.6863505269074202
- Mean Citation Score: 240.539648
- Max Citation Score: 245.11
- Similarity Product: 196.00558963537216

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