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 12):
The optical position-measuring device as recited in  claim 1 , wherein a scanning reticle disposed in the scanning unit is transparent, a first and a second scanning grating being provided on a side of the scanning reticle facing the scale, and a combining grating being provided on the opposite side, so that:\n a beam emitted by a light source strikes the measuring graduation, where the beam is split into two sub-beams that correspond to two different symmetric diffraction orders and are reflected back in a V-shape to the scanning unit; in the scanning unit, the two reflected-back sub-beams pass through the first and second scanning gratings and propagate toward the combining grating; and another diffraction occurs at the combining grating, whereupon a plurality of pairs of superimposed sub-beams propagate toward a detection unit having a plurality of detector elements.

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): 0.7716249516421194
- 35 USC 102 Novelty (BERT): 0.5398656044950992
- Combined Prediction Score: 0.7484490169274174
- Mean Citation Score: 313.1247259999999
- Max Citation Score: 389.02756
- Similarity Product: 339.27770422143465

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