PATENT CLAIM ANALYSIS

Application Number: 16154750
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["356", "616000"]

Abstract:
An optical position-measuring device for sensing a position of two relatively movable objects includes a scale connected to one object and having a measuring graduation. A scanning unit is disposed on the other object and has optical elements. An arrangement and design of the optical elements of the scanning unit results in a scanning beam path in which split and subsequently interfered sub-beams propagate mirror-symmetrically with respect to a plane of symmetry and either impinge on and/or are reflected back from the scale in a V-shape. The plane of symmetry is tilted by a defined tilt angle relative to the scale about an axis of rotation that is oriented parallel to a surface of the scale and extends perpendicular to the graduation direction. The sub-beams that are interfered are deflected at the measuring graduation into symmetric diffraction orders. The sub-beams travel identical optical path lengths between splitting and recombination.

Claim (Index 14):
The optical position-measuring device as recited in  claim 1 , wherein the scanning unit includes at least two reflectors and three beam-splitter cubes, so that:\n a beam emitted by a light source is split into two sub-beams in a first one of the three beam-splitter cubes; the two sub-beams are then each deflected by a respective one of the reflectors toward the measuring graduation, so that the sub-beams propagate in a V-shape toward the measuring graduation, where the sub-beams are each split into symmetric diffraction orders, so that collinearly superimposed sub-beams propagate toward a second one of the three beam-splitter cubes, where, after passing through optical polarization elements, the sub-beams are superimposed and propagate on partially toward a detector element and partially toward a third one of the beam-splitter cubes; in the third beam-splitter cube, the sub-beams are split into at least two further superimposed sub-beams which propagate toward further detector elements; and the split and superimposed sub-beams, prior to striking the detector elements, each pass through further optical polarization elements, so that each of the detector elements are operable to generate phase-shifted scanning signals.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 97.0
- Lexical Diversity: 1.74157
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15050620', '14135043', '15410806', '13309021', '14870158']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7717638152853716
- 35 USC 102 Novelty (BERT): 0.5396814783595333
- Combined Prediction Score: 0.7485555815927878
- Mean Citation Score: 313.1247259999999
- Max Citation Score: 389.02756
- Similarity Product: 333.8563850032759

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