Designers of AR glasses are faced with packaging challenges. Packaging constraints may force optical components to be aligned at the top level of assembly or some sort of final alignment may be required at the highest level. This causes the display to not be testable or sealed until the device is almost fully assembled. This disclosure describes a fully self-contained testable module that includes an entire see-through stack and integrated display for augmented reality glasses. The module is sealed from the environment, preserving the performance as it is shipped and integrated into the AR glasses, and delivered to the customer. AR glasses with a fully testable module as described herein are modular, which makes them easier to repair and upgrade. If necessary due to issues at higher level assembly or with returned units, the module can be replaced independent of other components. The modular design also allows for flexibility with respect to supply management.
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Gudgeon, Geoff; Choi, Jaehong; Valente, Matthew; and effinger, daniel, "Self-Contained Testable AR Glasses Sub-Module", Technical Disclosure Commons, (August 14, 2023)