PATENT CLAIM ANALYSIS

Application Number: 15963278
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-12
Patent Classification: ["355", "067000"]

Abstract:
A projection objective of a microlithographic projection exposure apparatus contains a plurality of optical elements arranged in N>−2 successive sections A 1  to A N  of the projection objective which are separated from one another by pupil planes or intermediate image planes. According to the invention, in order to correct a wavefront deformation, at least two optical elements each have an optically active surface locally reprocessed aspherically. A first optical element is in this case arranged in one section A j , j=1 . . . N and a second optical element is arranged in another section A k , k=1 . . . N, the magnitude difference |k−j| being an odd number.

Claim (Index 7):
A catadioptric projection objective comprising:\n a plurality of optical elements arranged to, during operation, direct light from a first field plane to a second field plane to form a reduced image of a reticle positioned in the first field plane at the second field plane, there being at least one intermediate image at a corresponding field plane and at least two pupil planes in a path of the light between the first field plane and the second field plane, the plurality of optical elements comprising a first lens and a concave mirror, the first lens having at least one curved surface, a surface of the first lens comprising a first corrective structure; and a pair of fold mirrors in the path of the light, a first of the fold mirrors being positioned in the path to direct the light towards the concave mirror and a second of the fold mirrors being positioned in the path to receive light reflected from the concave mirror, wherein the first lens is positioned in the projection objective in the path between the pair of fold mirrors and the concave mirror, the first corrective structure reducing an imaging error of the projection objective at the second field plane relative to an initial arrangement of the projection objective that does not include the first corrective structure.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 91.0
- Lexical Diversity: 1.68056
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14506992', '15411015', '15008519', '13272440', '15041149']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7512485455234263
- 35 USC 102 Novelty (BERT): 0.5449324410345232
- Combined Prediction Score: 0.7306169350745361
- Mean Citation Score: 379.635972
- Max Citation Score: 433.20255
- Similarity Product: 399.6129623106032

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