PATENT CLAIM ANALYSIS

Application Number: 15923858
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["355", "071000"]

Abstract:
There is provided a reflective image-forming optical system which is applicable to an exposure apparatus using, for example, EUV light and which is capable of increasing numerical aperture while enabling optical path separation of light fluxes. In a reflective imaging optical system ( 6 ) forming an image of a first plane ( 4 ) onto a second plane ( 7 ), the numerical aperture on a side of the second plane with respect to a first direction (X direction) on the second plane is greater than 1.1 times a numerical aperture on the side of the second plane with respect to a second direction (Y direction) crossing the first direction on the second plane. The reflecting imaging optical system has an aperture stop (AS) defining the numerical aperture on the side of the second plane, and the aperture stop has an elliptic-shaped opening of which size in a major axis direction (X direction) is greater than 1.1 times that in a minor axis direction (Y direction).

Claim (Index 26):
An exposure apparatus comprising:\n an illumination optical system which includes a fly's eye optical system including a plurality of reflecting elements arranged on a first plane and which is configured to illuminate a pattern formed in a reflection type mask arranged on a second plane from a first direction; and a projection optical system configured to form an image of the pattern on a substrate arranged on a third plane by using a radiation, from the pattern, which travels in a second direction, wherein the plurality of reflecting elements on the first plane are arranged in a first area having a size in a third direction and a size in a fourth direction greater than the size in the third direction, the third direction being a direction along an intersection between the first plane and a plane including a first axis along the first direction and a second axis along the second direction, and the fourth direction crossing the third direction on the first plane.

Metadata:
- Claim Count in Document: 65.0
- Percentile: 90.0
- Lexical Diversity: 2.55556
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15396629', '13511797', '12170933', '11281785', '15623749']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7555678327510659
- 35 USC 102 Novelty (BERT): 0.6050193296564171
- Combined Prediction Score: 0.740512982441601
- Mean Citation Score: 429.37590400000016
- Max Citation Score: 562.6265
- Similarity Product: 461.86366150733824

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