PATENT CLAIM ANALYSIS

Application Number: 16222512
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["355", "071000"]

Abstract:
A projection optical unit for EUV projection lithography has a plurality of mirrors for imaging an object field into an image field with illumination light. At least one of the mirrors is an NI mirror and at least one of the mirrors is a GI mirror. A mirror dimension Dx of the at least one NI mirror in a plane of extent (xz) perpendicular to a plane of incidence (yz) satisfies the following relationship: 4  LLWx/IWPV max <Dx.  A mirror dimension Dy of the at least one GI mirror in the plane of incidence (yz) satisfies the following relationship: 4  LLWy /( IWPV max  cos( a ))< Dy.

Claim (Index 11):
A projection optical unit, comprising:\n a plurality of mirrors configured to image an object field into an image field with illumination light, wherein:\n the plurality of mirrors comprises a GI mirror arranged so that a reflection surface of the mirror is impinged upon with a maximum angle of incidence of a chief ray ( 16 ) of a central field point; \n the maximum angle of incidence being greater than 45\u00b0, wherein a ray portion of the chief ray incident on the reflection surface and a ray portion of the chief ray emerging from the reflection surface lie in a plane of incidence (yz); \n a mirror dimension Dy of the at least one GI mirror in the plane of inci- dence satisfies the following relationship:\n 4  LLWy /( IWPV max  cos( a ))< Dy,  \n \n wherein:\n LLWy: \u00e9ndue of the projection optical unit in the plane of incidence (yz); \n IWPV max : maximum difference between a maximum angle of incidence and a minimum angle of incidence of the illumination light on the reflection surface of the GI mirror; \n a: angle of incidence of a chief ray of the central field point on the reflection surface of the GI mirror; and \n the projection optical unit is an EUV lithography projection optical unit

Metadata:
- Claim Count in Document: 18.0
- Percentile: 98.0
- Lexical Diversity: 2.19298
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16139474', '14962130', '15728812', '15596628', '15966947']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7498372642926918
- 35 USC 102 Novelty (BERT): 0.5207918460684725
- Combined Prediction Score: 0.7269327224702699
- Mean Citation Score: 357.308172
- Max Citation Score: 381.40622
- Similarity Product: 274.5478577377594

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