PATENT CLAIM ANALYSIS

Application Number: 15919519
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["355", "072000"]

Abstract:
An encoder, which measures a relative moving amount of a second member relative to a first member, includes: a diffraction grating provided on the first member; a light-incident optical member causing a measuring light to come into a grating pattern surface of the diffraction grating substantially perpendicularly; a first reflecting member provided on the second member and reflecting a diffracted light generated from the diffraction grating; a first direction-changing member changing a direction of the diffracted light; a first photo-detector detecting an interference light generated by interference between a double diffracted light and other diffracted light than the double diffracted light or a reference light, the double diffracted light being generated, via diffraction of the diffracted light, from the diffraction grating; and a measuring section which obtains the relative moving amount of the second member relative to the first member by using a detection signal from the first photo-detector.

Claim (Index 1):
An encoder device which measures a relative moving amount between a first member and a second member, a diffraction grating having a diffraction pattern of which periodic directions are a first direction and a second direction crossing the first direction being provided on the first member, the encoder device comprising:\n a first optical member configured to cause a measuring light to come into a surface of the diffraction grating along a first axis; a second optical member which is provided on the second member and which is configured to cause first, second, third and fourth diffracted lights generated, by the measuring light coming into the diffraction grating, from the diffraction grating along second, third, fourth and fifth axes, respectively, to come into the diffraction grating, the first direction being a direction in a first plane including the second and third axes and the second direction being a direction in a second plane including the fourth and fifth axes, first, second, third and fourth photo-detectors configured to receive fifth, sixth, seventh and eighth diffracted lights generated by the first, second, third and fourth diffracted lights coming into the diffraction grating, respectively.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 90.0
- Lexical Diversity: 2.68333
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13678857', '14397312', '15920364', '12330119', '10361685']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7138169878587951
- 35 USC 102 Novelty (BERT): 0.5625671107839717
- Combined Prediction Score: 0.6986920001513127
- Mean Citation Score: 314.04824800000006
- Max Citation Score: 466.81924
- Similarity Product: 440.1225149827743

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