PATENT CLAIM ANALYSIS

Application Number: 15746229
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["359", "002000"]

Abstract:
A diffractive security device is disclosed, including first and second diffractive structures defined in a carrier layer. The first diffractive structure is a diffractive zone plate structure of a continuously curved surface configured such that when the device is illuminated by on-axis light, a first diffraction pattern generated by the first diffractive structure can be viewed from at least a first side of the device at substantially all viewing angles, the first diffraction pattern exhibiting a reference point or reference line relative to which other features of the first diffraction pattern appear to move when the viewing angle is changed. The second diffractive structure is an off-axis diffractive structure configured such that when the device is illuminated by on-axis light a second diffraction pattern generated by the second diffractive structure can be viewed from at least the first side of the device at at least some off-axis viewing angles.

Claim (Index 58):
A diffractive security device comprising first and second diffractive structures defined in a carrier layer,\n the first diffractive structure being a diffractive zone plate structure of a continuously curved surface configured such that when the device is illuminated by on-axis light a first diffraction pattern generated by the first diffractive structure can be viewed from at least a first side of the device at substantially all viewing angles, the first diffraction pattern exhibiting a reference point or reference line relative to which other features of the first diffraction pattern appear to move when the viewing angle is changed; and the second diffractive structure being an off-axis diffractive structure configured such that when the device is illuminated by on-axis light a second diffraction pattern generated by the second diffractive structure can be viewed from at least the first side of the device at at least some off-axis viewing angles, wherein the second diffractive structure comprises a plurality of laterally offset portions, each portion of the second diffractive structure being configured such that when the device is illuminated by on-axis light the portion of the second diffraction effect generated by the respective portion of the second diffractive structure can be viewed only from a respective subset of one or more predetermined off-axis viewing angles, the respective subsets of viewing angles being different for different portions of the second diffractive structure such that when the viewing angle is changed different portions of the second diffractive device diffract light to the viewer in sequence, whereby the second diffraction effect appears to change; wherein the device has one or more first regions in which the first diffractive structure is present but not the second diffractive structure, and the device has one or more second regions in which the second diffractive structure is present, the first diffractive structure optionally being present and combined with the second diffractive structure in the second regions, the first and second regions being interspersed with one another across the device, such that the first diffraction pattern is exhibited across the device at all viewing angles and at at least some viewing angles the second diffraction pattern appears superimposed on the first diffraction pattern and upon changing the viewing angle the second diffraction pattern exhibits a change referenced against the reference point or reference line of the first diffraction pattern.

Metadata:
- Claim Count in Document: 53.0
- Percentile: 86.0
- Lexical Diversity: 2.34848
- Patent Class: 359.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12451094', '15111691', '15552732', '16098820', '10565157']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.816907791508664
- 35 USC 102 Novelty (BERT): 0.4882549192485215
- Combined Prediction Score: 0.7840425042826498
- Mean Citation Score: 255.562986
- Max Citation Score: 283.36246
- Similarity Product: 234.34393590254544

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test