Abstract: A waveguide display includes a substrate, one or more projectors for projecting display light for different fields of view, two or more input gratings configured to couple the display light for different fields of view into the substrate, and a two-dimensional grating characterized by three or more different grating vectors that include grating vectors same as the grating vectors of the two or more input gratings. The two-dimensional grating is configured to couple the display light for different fields of view out of the substrate at a two-dimensional array of locations of the substrate. The two-dimensional grating includes a two-dimensional array of grating elements aligned along a plurality of directions or a plurality of layers of one-dimensional gratings characterized by different grating vectors.

Abstract: The technology disclosed in this patent document can be used to implement an optical device for generating broadband optical pulses, including an optical waveguide having different waveguide structures at different locations along the optical waveguide and with varying dimensions or pressure gradient that change adiabatically along the different locations to enable non-linear four wave mixing over a broad spectral range.

Abstract: The technology disclosed in this patent document can be used to implement an optical device for generating broadband optical pulses, including an optical waveguide having different waveguide structures at different locations along the optical waveguide and with varying dimensions or pressure gradient that change adiabatically along the different locations to enable non-linear four wave mixing over a broad spectral range.

Abstract: A computerized prefab architect design system (CPAD) and method for the fabrication of frame-structured buildings with all functions, including an integrating device for integrating building design elements including customer acknowledged floor plans, plumbing layouts, electricity wiring layouts and structure/strength parameters into an assembly drawing; a dividing device for forming segments and layouts of wall panels, floor/ceiling panels and roof panels, layouts of roof trusses, and segments and layouts of plumbing, wiring and jointers in accordance with a segmentation rule for buildings comprising a local building specification, segmentation based on a loading size of a shipping container, strength and structural requirements of buildings, requirements for convenient on-site work and flexible assembly lines at factories; a generating device for generating a polygon stencil for components of the prefab architect based on said segments and layouts, said stencil including building frames, functional boards t