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公开(公告)号：US20240019703A1
公开(公告)日：2024-01-18
申请号：US17890001
申请日：2022-08-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Richard FARRELL , Michiel Koen CALLENS , Yu SHI
CPC classification number: G02B27/0176 , G02B27/0172 , G02B6/0093 , F16F15/04 , G03F7/0005 , G02B2027/0178 , G02B2027/0169 , G02B2027/0161
Abstract: An optical assembly to be used in a head-mounted display (HMD) device or similar may include a first optical component and a second optical component, where the first optical component and the second optical component are layered in the optical assembly. The optical assembly may also include a waveguide positioned between the first optical component and the second optical component. One or more shock absorbers may be positioned on surfaces of the first optical component and the second optical component facing the waveguide. The shock absorbers may be a support that touches a surface of the waveguide or a stand-off that extends toward the waveguide with a gap. The shock absorbers may also include a pillar, a cone, an inverted cone, an inverted pillar, a spring, a double helix, a three-dimensional mesh, a strap, a bumper, a sphere, or a high aspect ratio 3D mesh tower.
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公开(公告)号：US20240179284A1
公开(公告)日：2024-05-30
申请号：US18519968
申请日：2023-11-27
Applicant: Meta Platforms Technologies, LLC
Inventor： Michiel Koen CALLENS
CPC classification number: H04N9/3194 , G02B6/34 , G02B27/0093 , G02B27/0172 , G02B2027/014
Abstract: A waveguide display system includes a waveguide transparent to visible light, a projector configured to project disparity test light onto the waveguide, an input coupler configured to couple the disparity test light into the waveguide, and a set of gratings on the waveguide. The set of gratings is configured to guide the disparity test light to propagate along two different paths in the waveguide, and couple the disparity test light propagating along the two different paths out of the waveguide at a peripheral region of the waveguide. The set of gratings includes two disparity gratings having different grating vectors or a two-dimensional grating having two different grating vectors. The disparity test light on a longer primary path includes the full color spectrum of the disparity test light, while the disparity test light on a shorter secondary path includes only disparity test light having shorter wavelengths.
