PATENT CLAIM ANALYSIS

Application Number: 15775973
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["356", "477000"]

Abstract:
An interferometer for areally measuring an optically smooth surface is presented, including means for illuminating a surface region with a plurality of discrete object waves from different directions and comprising means which, on a detector, superimpose object waves reflected at the surface onto a reference wave that is coherent with a plurality of object waves in order to form an interferogram. The interferometer is distinguished by virtue of it being configured to illuminate the surface with a plurality of object waves at the same time and produce the reference wave by way of a Fizeau beam splitter plate or a Fizeau objective, and by virtue of the interferometer including an interferometer stop that is arranged in the beam path upstream of the detector, and imaging optics, wherein the interferometer stop is situated within, or slightly outside of, the Fourier plane of the imaging optics and said interferometer stop filters the object waves reflected by the surface.

Claim (Index 10):
Interferometer according to  claim 9 , characterized in that the edge length of the n-gonal aperture is at least equal to an edge length a, where the fringe density of the interferogram, which density occurs when a wave front of which the gradient is limited by the interferometer stop (A) interferes with a planar reference wave, reaches at most half the Nyquist frequency of the camera (K).

Metadata:
- Claim Count in Document: 44.0
- Percentile: 93.0
- Lexical Diversity: 2.10127
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12856723', '10838694', '11800840', '15385143', '11354534']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7027039764680508
- 35 USC 102 Novelty (BERT): 0.5148705560215407
- Combined Prediction Score: 0.6839206344233998
- Mean Citation Score: 246.20876200000004
- Max Citation Score: 264.7556
- Similarity Product: 174.42277406041626

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