PATENT CLAIM ANALYSIS

Application Number: 16174053
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["356", "454000"]

Abstract:
Inspecting a multilayer sample. In one example embodiment, a method may receiving, at a beam splitter, light and splitting the light into first and second portions; combining, at the beam splitter, the first portion of the light after being reflected from a multilayer sample and the second portion of the light after being reflected from a reflector; receiving, at a computer-controlled system for analyzing Fabry-Perot fringes, the combined light and spectrally analyzing the combined light to determine a value of a total power impinging a slit of the system for analyzing Fabry-Perot fringes; determining an optical path difference (OPD); recording an interferogram that plots the value versus the OPD for the OPD; performing the previous acts of the method one or more additional times with a different OPD; and using the interferogram for each of the different OPDs to determine the thicknesses and order of the layers of the multilayer sample.

Claim (Index 15):
A system for inspecting a multilayer sample, the system comprising:\n a broadband light source configured to emit light; a beam splitter configured to receive the light from the broadband light source and split the light into first and second portions, direct the first portion of the light toward a multilayer sample positioned a first optical distance from the beam splitter, direct the second portion of the light onto a reflector positioned a second optical distance from the beam splitter, combine the first portion of the light after being reflected from the multilayer sample and the second portion of the light after being reflected from the reflector, and direct the combined light toward a system for analyzing Fabry-Perot fringes; the system for analyzing Fabry-Perot fringes configured to receive the combined light, direct the combined light over a single-mode optical fiber of the system for analyzing Fabry-Perot fringes, receive, at a computer-controlled spectrograph included in the system for analyzing Fabry-Perot fringes, the combined light over the single-mode optical fiber, and spectrally analyze the combined light, using the computer-controlled spectrograph, to measure a value of a total power impinging a slit of the system for analyzing Fabry-Perot fringes; a motion stage configured to decrease the first optical distance by moving the multilayer sample closer to the beam splitter or increase the second optical distance by moving the reflector further away from the beam splitter; and a computer configured to control the system for analyzing Fabry-Perot fringes, determine an optical path difference (OPD) between an optical path of the first portion of the light and an optical path of the second portion of the light, record an interferogram that plots the value versus the OPD for each unique OPD, control the motion stage between measurements to change the OPD, and use the interferograms to determine the thicknesses and order of the layers of the multilayer sample.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 97.0
- Lexical Diversity: 2.21053
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15486146', '15009755', '14047681', '15410328', '16048712']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7056211706912565
- 35 USC 102 Novelty (BERT): 0.6278229889925843
- Combined Prediction Score: 0.6978413525213893
- Mean Citation Score: 322.34348
- Max Citation Score: 575.8244
- Similarity Product: 564.314924631977

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