Micro-patterning for waveguide input port
A non-linear and irregularly oscillating boundary line in waveguides reduces scattering interference, effectively minimizing visual defects and improving image quality by ensuring adjacent light rays destructively interfere, thus overcoming previous limitations.
WO2026131634A1PCT designated stage Publication Date: 2026-06-25ENVISICS LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ENVISICS LTD
- Filing Date
- 2025-12-15
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing waveguides suffer from visual artefacts and defects caused by constructive scattering interference at the boundary of the input port and reflective coating, which previous attempts to minimize have not fully eliminated.
Method used
Introduce a non-linear and irregularly oscillating boundary line between the input port and reflective section of the waveguide, using a modified photolithographic mask to create a pattern of alternating peaks and troughs that suppress scattering intensity through destructive interference.
Benefits of technology
Reduces the appearance of visual artefacts by ensuring adjacent light rays receive different phase shifts, maintaining manufacturing simplicity while enhancing image quality.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025087091_25062026_PF_FP_ABST
Abstract
A waveguide comprising a pair of opposing surfaces arranged to guide a wavefront therebetween by internal reflection. The waveguide further comprises a first surface of the pair of opposing surfaces comprising a first section and a second section. The first section is substantially transmissive and is configured to receive the wavefront. The second section is substantially reflective and is configured to internally reflect the wavefront. The first section and the second section abut one another to form a non-linear and irregularly oscillating boundary line parallel to the first surface of the waveguide.
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