Method and system for variable optical thickness waveguides for augmented reality devices

Patent metadata

Field	Value
Publication number	US-2025172754-A1
Application number	US-202519030354-A
Country	US
Kind code	A1
Filing date	Jan 17, 2025
Priority date	Feb 14, 2019
Publication date	May 29, 2025
Grant date	—

Abstract

An augmented reality device includes a projector, projector optics optically coupled to the projector, and a substrate structure including a substrate having an incident surface and an opposing exit surface and a first variable thickness film coupled to the incident surface. The substrate structure can also include a first combined pupil expander coupled to the first variable thickness film, a second variable thickness film coupled to the opposing exit surface, an incoupling grating coupled to the opposing exit surface, and a second combined pupil expander coupled to the opposing exit surface.

First claim

What is claimed is:

1 . An augmented reality device comprising:
a projector; projector optics optically coupled to the projector; and a substrate structure including:
a substrate having an incident surface and an opposing exit surface; and
a first variable thickness film coupled to the incident surface.

Assignees

• Magic Leap Inc

Inventors

• Tekolste Robert D
• Ong Ryan Jason
• LIU Victor Kai
• Bhargava Samarth
• Peroz Christophe
• Singh Vikramjit
• Menezes Marlon Edward
• Yang Shuqiang
• Xu Frank Y

Classifications

• G02B6/0046

  Tapered light guide, e.g. wedge-shaped light guide · CPC title

• G02B2006/12061

  Silicon · CPC title

• G02B2006/12069

  Organic material · CPC title

• G02B2006/12038

  Glass (SiO2 based materials) · CPC title

• G02B2006/12197

  Grinding; Polishing · CPC title