PATENT CLAIM ANALYSIS

Application Number: 16103113
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-01
Patent Classification: ["385", "037000"]

Abstract:
An optical device is disclosed for expanding input light in two dimensions in an augmented reality display. The device comprises a waveguide ( 12 ) and three linear diffraction grat-ings H 0,  H 1,  H 2.  An incident beam from a projector illuminates an input grating H 0  with polychromatic light, and the light is coupled into the waveguide ( 12 ). The other two gratings H 1,  H 2  are overlaid on top of one another. Light can be diffracted by one grating H 1  into a first diffracted order and towards the other grating H 2  which can couple the light out of the waveguide ( 12 ) towards a viewer. In another arrangement the crossed gratings H 1,  H 2  may be replaced by a photonic crystal ( 19 ) having a regular array of pillars ( 20 ) which create a number effective diffraction gratings.

Claim (Index 2):
The optical device of  claim 1  wherein each diffractive optical element comprises grooves and a grating vector in the plane of the grooves, having a direction that is normal to the grooves and a magnitude which is inversely related to the pitch of the grooves, wherein the input and output diffractive optical elements respectively have grating vectors with a substantially equal magnitude.

Metadata:
- Claim Count in Document: 25.0
- Percentile: 96.0
- Lexical Diversity: 1.95122
- Patent Class: 385.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15329557', '15149115', '15683702', '09991371', '10186684']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7915493363235478
- 35 USC 102 Novelty (BERT): 0.5084172473223524
- Combined Prediction Score: 0.7632361274234283
- Mean Citation Score: 190.445666
- Max Citation Score: 272.84354
- Similarity Product: 214.8236536621368

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

Dataset: test