Inprentus Offers A One-Stop Shop for Augmented Reality Waveguides
Inprentus Advantages
Excellent long-range coherence: Extremely flat wavefronts, no screen door effect
Cut process complexity: Identical process for IC, EPE, and OC gratings
Customization of groove shapes: Alternating groove properties and non-traditional shapes possible
Design to fabrication versatility: A large variety of design solutions can be implemented
Large gratings: Cost does not scale with larger “write” field
High spectral tunability: Wide angular and spectral bandwidth
High optical efficiency: Precision facets with wide range of blaze angles
Efficiency modulation design kit: Pupil expansion strategies available
Ease of volume replication: Proven process pathway to volume replication
Advanced Specifications:
Versatile: 4'“, 6”, 8” wafers or photomasks
Grating size: No restriction
Pitch Uniformity: < 20 pm
Stray light: < 0.5%
Facet Angles: 0.1 - 85 degrees
Line density: 50-6000 lines per mm
How Augmented Reality Waveguides Work
A waveguide consists of 3 gratings - input, turn, and output - on a transparent lens that projects an image into the eye, allowing them to be overlaid onto the real world vision of the user. These waveguide gratings are transferred onto a transparent lens from the "master mold" using a process called imprinting.