PATENT CLAIM ANALYSIS

Application Number: 15890585
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["250", "305000"]

Abstract:
There is provided an energy filter capable of being simplified in structure and of achieving low aberrations. The energy filter ( 100 ) includes a first sector magnet ( 10 ) and a second sector magnet ( 20 ). The first and second magnets ( 10, 20 ) are configured mirror-symmetrically with respect to a symmetry plane (M). There are one focal point of crossover in the X direction and one focal point of crossover in the Y direction. The focal point of crossover in the X direction and the focal point of crossover in the Y direction are at an energy dispersive plane (S 2 ). There are two focal points of image in the X direction and two focal points of image in the Y direction. The focal points of image in the X direction and the focal points of image in the Y direction are at the symmetry plane (M) and at an achromatic plane (A 2 ).

Claim (Index 1):
An energy filter comprising a first sector magnet and a second sector magnet for producing deflecting magnetic fields to deflect a charged particle beam, wherein\n the first sector magnet and the second sector magnet are configured mirror-symmetrically with respect to a symmetry plane, the first sector magnet and the second sector magnet are identical in polarity, the first sector magnet and the second sector magnet together constitute an optical system for focusing a crossover and an image, the charged particle beam travels in a Z direction, the charged particle beam is deflected by the deflecting magnetic fields in an X direction, the deflecting magnetic fields produce lines of magnetic force that lie in a Y direction, there are one focal point of the crossover in the X direction and one focal point of the crossover in the Y direction except for focusing at a first entrance crossover plane, the focal point of the crossover in the X direction and the focal point of the crossover in the Y direction are at an energy dispersive plane if the first entrance crossover plane is excluded, there are two focal points of the image in the X direction and two focal points of the image in the Y direction except for focusing at the first entrance image plane, the focal points of the image in the X direction and the focal points of the image in the Y direction are at the symmetry plane and at an achromatic plane if the first entrance image plane is excluded, a real image is formed at the position of the symmetry plane when the first-mentioned image is focused in the X and Y directions, the entrance crossover plane and the energy dispersive plane are positioned mirror-symmetrically with respect to the symmetry plane, and the entrance image plane and the achromatic plane are positioned mirror-symmetrically with respect to the symmetry plane.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 88.0
- Lexical Diversity: 3.07018
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10738966', '10533598', '10571347', '10571345', '13551947']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7243697445782752
- 35 USC 102 Novelty (BERT): 0.4912215876298193
- Combined Prediction Score: 0.7010549288834297
- Mean Citation Score: 247.41235400000005
- Max Citation Score: 264.19177
- Similarity Product: 216.5008485060543

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