PATENT CLAIM ANALYSIS

Application Number: 16086796
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-04
Patent Classification: ["356", "489000"]

Abstract:
Herein is provided a simplified method for performing multiple wavelength phase shift interferometry measurements that is implemented by modulating each of the monochromatic light sources with a different carrier frequency, combining them to a single beam, detecting all wavelengths simultaneously using the same detectors and separating them via Fourier analysis and demodulation of the data. This approach offers both a simplification to the optical system and reduces the duration of time required to perform the multiple wavelength measurement, based on a simple data extraction algorithm decoding the information for each wavelength. When combined with the parallel phase shift orthogonal polarization interferometric microscopy this method provides fast, stable, high precision 3D imaging and displacements sensing. Also disclosed are embodiments of optical systems designed to carry out the method.

Claim (Index 7):
A system for performing multiple wavelength phase shift interferometry (PSI), the system comprising:\n a) at least one light source, wherein all light sources together provide N beams of monochromatic light at N distinct wavelengths, wherein N\u22652; b) components configured to modulate each of the N monochromatic light beams with a different carrier frequency; c) beam combining optics that combine the N monochromatic light beams into a combined light beam comprising the N wavelengths; d) an interferometer; e) at least one detector configured to detect all N wavelengths in the combined light beam output signal of the interferometer; f) at least one frequency domain demodulation unit configured to separate the interferometric signal output by the at least one detector into N signals, each containing information related to a different one of the wavelengths; g) phase modulation optics configured to produce M different specific phase shifts for all N wavelengths; and h) a processor and display unit comprising software algorithms and processing, memory, and display components configured to process M\u00d7N signals to extract phase information for optical path difference calculations and phase unwrapping.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 97.0
- Lexical Diversity: 1.44681
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['10838694', '11800840', '12856723', '11335871', '11334949']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7267642513356269
- 35 USC 102 Novelty (BERT): 0.4770703740652938
- Combined Prediction Score: 0.7017948636085937
- Mean Citation Score: 230.185626
- Max Citation Score: 237.59349
- Similarity Product: 204.5586768473536

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test