PATENT CLAIM ANALYSIS

Application Number: 15966947
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-09
Patent Classification: ["355", "067000"]

Abstract:
An imaging optical unit for projection lithography has a plurality of mirrors for guiding imaging light from an object field into an image field. The object field is spanned by a first, larger object field dimension and along a second, smaller object field dimension. The imaging optical unit has at least two GI mirrors and at least one NI mirror. The NI mirror is arranged between two GI mirrors in the imaging light beam path. A used reflection surface of the NI mirror has an aspect ratio between a surface dimension along a first reflection surface coordinate and a surface dimension along a second reflection coordinate parallel to the second object field dimension. The aspect ratio being less than 4.5. An imaging optical unit with reduced production costs emerges.

Claim (Index 1):
An imaging optical unit, comprising:\n a plurality of mirrors configured to guide imaging light from an object field in an object plane into an image field in an image plane along an imaging light beam path, wherein:\n the object field is spanned by a first Cartesian object field coordinate along a first object field dimension; \n the object field is spanned by a second Cartesian object field coordinate along a second object field dimension; \n the first object field dimension is greater than the second object field dimension; \n the plurality of mirrors comprises first, second and third mirrors; \n the first mirror is configured so that, during use of the imaging optical unit, the imaging light is incident on the first mirror at an angle of incidence that is greater than 60\u00b0; \n the second mirror is configured so that, during use of the imaging optical unit, the imaging light is incident on the second mirror at an angle of incidence that is greater than 60\u00b0; \n the third mirror is configured so that, during use of the imaging optical unit, the imaging light is incident on the third mirror at an angle of incidence that is less than 45\u00b0; \n the third mirror is between the first and second mirrors in the imaging light beam path; \n the third mirror comprises a used reflection surface; \n the used reflection surface of the third mirror has a first surface dimension along a first reflection surface coordinate; \n the used reflection surface of the third mirror has a second surface dimension along a second reflection surface coordinate parallel to the second object field dimension; and \n the ratio of the first surface dimension to the second surface dimension is less than 4.5.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 91.0
- Lexical Diversity: 2.15625
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14962130', '15728812', '15967306', '15596628', '15816325']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7549667149389522
- 35 USC 102 Novelty (BERT): 0.5385625667304116
- Combined Prediction Score: 0.7333263001180982
- Mean Citation Score: 384.462712
- Max Citation Score: 419.71683
- Similarity Product: 383.4491796389222

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