PATENT CLAIM ANALYSIS

Application Number: 16217933
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["355", "067000"]

Abstract:
A catoptric system for EUV lithography includes six freeform reflective surfaces that are specified based on fringe Zernike polynomials. Each of the surfaces is tilted and/or decentered in a meridian plane and with respect to a common axis so that image and object planes are parallel. Rectangular fields can be imaged with image space numerical aperture of at least 0.5.

Claim (Index 1):
A catoptric optical system including a plurality of mirrors arranged along an axis, the system comprising:\n a first mirror situated to receive light propagating away from the axis from a point on an object surface, wherein the point on the object surface is displaced from the axis along a first direction; a second mirror on which light from the first mirror is incident; a third mirror on which light from the second mirror is incident; a fourth mirror, arranged between the second mirror and the object surface, on which light from the third mirror is incident; a fifth mirror including a first aperture, on which light from the fourth mirror is incident; and a sixth mirror including a second aperture, on which light from the fifth mirror is incident; wherein the light from the fourth mirror passes through the second aperture of the sixth mirror and then is incident on the fifth mirror; wherein the light from the sixth mirror passes through the first aperture of the fifth mirror and then is incident on a point on an image surface that is displaced from the axis along a second direction opposite the first direction; and wherein the light from the fourth mirror forms an intermediate image between the first mirror and the third mirror.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 98.0
- Lexical Diversity: 1.18868
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12796498', '14085614', '14524162', '14179692', '14451545']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6932330560038567
- 35 USC 102 Novelty (BERT): 0.4698265116539089
- Combined Prediction Score: 0.6708924015688619
- Mean Citation Score: 188.863708
- Max Citation Score: 223.68753
- Similarity Product: 176.00544763893666

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