PATENT CLAIM ANALYSIS

Application Number: 15927235
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-11
Patent Classification: ["355", "067000"]

Abstract:
An illumination system of a microlithographic projection exposure apparatus includes a spatial light modulator which varies an intensity distribution in a pupil surface. The modulator includes an array of mirrors that reflect impinging projection light into directions that depend on control signals applied to the mirrors. A prism, which directs the projection light towards the spatial light modulator, has a double pass surface on which the projection light impinges twice, namely a first time when leaving the prism and before it is reflected by the mirrors, and a second time when entering the prism and after it has been reflected by the mirrors. A pupil perturbation suppressing mechanism is provided that reduces reflections of projection light when it impinges the first time on the double pass surface, and/or prevents that light portions being a result of such reflections contribute to the intensity distribution in the pupil surface.

Claim (Index 17):
The illumination system of  claim 2 , wherein the perturbation suppression mechanism comprises a mechanism configured to ensure that the surface is a distance from the light modulator sufficient that areas on the surface on which the light impinges the first time are completely separated from areas on the surface on which the light impinges the second time.

Metadata:
- Claim Count in Document: 66.0
- Percentile: 90.0
- Lexical Diversity: 2.08
- Patent Class: 355.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15270201', '14743017', '13625072', '14543079', '14845574']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7413985411970782
- 35 USC 102 Novelty (BERT): 0.5921762350762592
- Combined Prediction Score: 0.7264763105849963
- Mean Citation Score: 413.347008
- Max Citation Score: 511.5911
- Similarity Product: 492.400383897972

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

Dataset: test