PATENT CLAIM ANALYSIS

Application Number: 15943331
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["250", "338100"]

Abstract:
The production of orbital angular momentum (OAM) using an electrically-tunable q-plate, spiral phase plate or spatial light modulator, as well as a phase mask that can act as a spatial frequency filter, provides a simple, efficient method of edge contrast in biological, objects and medical sample imaging for histological evaluation of tissue, smears, PAP and histopathological samples. An OAM instrument produces OAM situated at the Fourier plane of a 4F lens system, similar to the use of a high-pass spatial filter, allows the passage of high spatial frequencies and enables the production of an image with highly illuminated edges contrasted against a dark background for both opaque and transparent objects.

Claim (Index 13):
An OAM microscope for detecting and highlighting uneven structural features of a sample comprising a laser for forming and directing a beam of light along an optical axis; means for positioning a specimen the spatial structural features of which are to be evaluated or observed along said optical axis; means for applying said light beam to said sample by at least one of transmitting said light beam through the specimen and reflecting scattered light from the specimen; a first lens spaced at a distance from the location of the specimen for optically generating a Fourier spatial frequency spectrum of the light emanating from the sample to display all spatial frequencies of the Fourier spatial frequency spectrum at a Fourier plane; means for modifying said spatial frequencies at said Fourier plane into an OAM beam by selectively blocking low spatial frequencies and passing high spatial frequencies; a second lens spaced from said Fourier plane for projecting said spatial frequencies at an image plane by said second lens; and imaging means for forming an observable image with contrast or enhancement of the spatial structures of the specimen formed by the high spatial frequencies detected at said image plane.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.46429
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11856403', '13776037', '13342350', '14068818', '12494605']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6705663449176784
- 35 USC 102 Novelty (BERT): 0.4874889380611282
- Combined Prediction Score: 0.6522586042320234
- Mean Citation Score: 198.04568
- Max Citation Score: 205.25748
- Similarity Product: 151.68987018229006

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