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 9):
The control method of  claim 8 , wherein alternately updating a zero reference of one of the first interferometer and the second interferometer with the positional information from the other one of the first interferometer and the second interferometer further comprises the step of, after the light beam from the effective interferometer has also passed across the joint between the corresponding adjacent two of the plurality of planar mirrors, updating a zero reference of the effective interferometer with the updated zero reference.

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): 0.7369014819043433
- 35 USC 102 Novelty (BERT): 0.4955052126154384
- Combined Prediction Score: 0.7127618549754529
- Mean Citation Score: 230.360458
- Max Citation Score: 233.27002
- Similarity Product: 164.45021573551534

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