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Patent drawing for Dual axis internal optical beam tilt for eyepiece of an HMD
US 8,867,139 B2
Optics US 8,867,139 B2 Expired

Dual axis internal optical beam tilt for eyepiece of an HMD

This invention describes an eyepiece for a virtual or augmented reality headset. It projects an image onto a curved mirror, which reflects it forward, and a specially angled, partially reflective surface then precisely steers the image to the user's eye in both horizontal and vertical dimensions. The claims narrow the physical design to an eyepiece with flat, planar top, bottom, and eye-ward surfaces.

Why it matters: Filed before significant advancements in micro-display technology and precision optical manufacturing. Modern fabrication techniques and computational optical design tools could now enable more compact, higher-performance, and cost-effective implementations of such a precise optical system for HMDs.

Status
ExpiredProtection ended and was never renewed
How hard to build
SpecializedCustom optics, precision alignment

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