PATENT CLAIM ANALYSIS

Application Number: 16067328
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["356", "500000"]

Abstract:
An interferometer measuring device is disclosed which includes a workpiece stage ( 10 ), a laser interferometer ( 20 ) and a measuring reflector ( 30 ) mounted on the workpiece stage. The measuring reflector ( 30 ) is comprised of a plurality of planar mirrors ( 31 ) that are joined together along a horizontal direction. The laser interferometer ( 20 ) includes a first interferometer ( 21 ) and a second interferometer ( 22 ). The first interferometer ( 21 ) and the second interferometer ( 22 ) are configured such that during a horizontal movement of the workpiece stage ( 10 ) with respect to the laser interferometer ( 20 ), when light beams emanated from the first interferometer ( 21 ) and the second interferometer ( 22 ) are incident on a transition section ( 32 ) defined by corresponding adjacent two of the planar mirrors ( 31 ), the light beam emanated from the first interferometer ( 21 ) is incident on one of the adjacent two planar mirrors ( 31 ) and the light beam emanated from the second interferometer ( 22 ) is incident on the other of the adjacent two planar mirrors ( 31 ). Additionally, the first interferometer ( 21 ) and the second interferometer ( 22 ) alternately provide positional information to the workpiece stage ( 10 ). A method for controlling such an interferometer measuring device is also disclosed. The interferometer measuring device and the method enable an extended horizontal measurement range for the workpiece stage ( 10 ) by using the plurality of planar mirrors ( 31 ) that are joined together as well as by alternating zero-reference updating of the two interferometers ( 21, 22 ).

Claim (Index 10):
The control method of  claim 7 , wherein the differences in surface nonlinearity are differences between optical path lengths of the first and second interferometers at the corresponding transition section.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 94.0
- Lexical Diversity: 3.42045
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10764377', '14441821', '11217168', '10597708', '09593800']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.738563831749771
- 35 USC 102 Novelty (BERT): 0.4863028109084121
- Combined Prediction Score: 0.7133377296656351
- Mean Citation Score: 230.360458
- Max Citation Score: 233.27002
- Similarity Product: 184.3871000873625

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