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 1):
An interferometer measuring device, comprising a workpiece stage, a laser interferometer and a measuring reflector mounted on the workpiece stage, wherein the measuring reflector is comprised of a plurality of planar mirrors that are joined together along a horizontal direction, and wherein the laser interferometer comprises a first interferometer and a second interferometer, which are configured such that, during a movement of the workpiece stage with respect to the laser interferometer along the horizontal direction, when light beams emanated from the first interferometer and the second interferometer are incident on a transition section defined by corresponding adjacent two of the plurality of planar mirrors, the light beam emanated from the first interferometer is incident on one of the adjacent two planar mirrors with the light beam emanated from the second interferometer being incident on the other one of the adjacent two planar mirrors, and the first interferometer and the second interferometer alternately provide positional information to the workpiece stage.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 94.0
- Lexical Diversity: 3.42045
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10764377', '14441821', '11217168', '10597708', '09593800']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7143632850784627
- 35 USC 102 Novelty (BERT): 0.4871797576449876
- Combined Prediction Score: 0.6916449323351153
- Mean Citation Score: 230.360458
- Max Citation Score: 233.27002
- Similarity Product: 177.51001247030734

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