This disclosure describes three-dimensional printing kits, methods, and systems for three-dimensional printing with directionally-dependent reflective particles. In one example, a three-dimensional printing kit can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer particles and directionally-dependent reflective particles. The directionally-dependent reflective particles can be chemically and thermally stable at a melting point temperature of the polymer particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.

A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.

Diffuser Elms may include a substrate and a plurality of diffusing particles uniformly distributed in the substrate. An absolute value of a difference between a refractive index of the diffusing particles and a refractive index of the substrate is less than or equal to 0.25, a diameter of the diffusing panicles ranges from 1 μm to 6 μm, and a weight percentage of the diffusing particles in the substrate ranges from 1‰ to 12‰, such that both a light transmittance and a haze of the diffuser film are greater than 80%.

A film material insert molding method, includes an intermediate part forming step of forming a first intermediate part having an edge extending radially outward, the edge being disposed at and near an outer peripheral end of a final shape of a film material, a transparent resin layer forming step of forming a second intermediate part including a transparent resin layer, by injection molding, on a front surface of the first intermediate part, with the edge of the first intermediate part being fixed, and a substrate resin layer forming step of forming an insert-molded article including a substrate resin layer, by injection molding, on a back surface of the second intermediate part, the substrate resin layer covering a surface of a radially outer end of the edge.

In one embodiment, the component comprises a light reflective housing. The housing comprises a matrix material of a light-transmittive plastic and particles of a glass ceramic embedded therein. The particles comprise a mean diameter of at least 5 μm. The particles comprise a glass matrix and crystallites. A refractive index difference between the glass matrix and the crystallites is at least 0.5, and the crystallites exhibit a mean diameter between 20 nm and 0.5 μm, inclusive.

The present invention provides an optical device for augmented reality having an optical structure arranged in a straight line, the optical device including: a reflective means configured to transfer augmented reality image light, output from an image output unit, to the pupil of a user's eye by reflecting the augmented reality image light toward the pupil, thereby providing an image for augmented reality to the user; and an optical means configured such that the reflective means is buried and disposed therein, and also configured to transmit at least part of real object image light, output from a real object, therethrough toward the pupil of the user's eye; wherein the optical unit has a first surface through which the augmented reality image light and the at least part of the real object image light are output and a second surface which the real object image light enters.

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

A shaping apparatus, a shaping method, and a shaping program with which a shaped object can be formed to have the interior with excellent color expression are provided. A 3D printer forms a three-dimensional shaped object having an interior colored, with layer bodies of a light reflective material and a coloring material ejected from an ejection head based on color image data layered. The 3D printer determines arrangement positions of a light reflective material and a coloring material so that the light reflective material is arranged at a predetermined position in each unit volume in a region to be colored inside a shaped object and the coloring material is arranged around the light reflective material based on the color image data. A set position of the unit volume is set to make one surface of one unit volume come into contact with a plurality of other unit volumes.

Examples of an imaging system for use with a head mounted display (HMD) are disclosed. The imaging system can include a forward-facing imaging camera and a surface of a display of the HMD can include an off-axis diffractive optical element (DOE) or hot minor configured to reflect light to the imaging camera. The DOE or hot minor can be segmented, for example, with different segments having different angles or different optical power. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc. Methods for manufacturing angularly segmented optical elements are also provided. The methods can include injection molding.

A method of forming a building panel includes embossing dimples into a sheet, where the dimples extend outward from a plane, and expanding a foam core onto the plane and into portions of the dimples. The method may include forming dimples that are convex relative to the plane and the foam core or the sheet having a thin foil having a plastic protective coating. The method may include attaching a cellulosic layer to the foam core opposite the plane. Additionally, flow channels may be formed in the sheet between the dimples, such that expanding the foam core onto the plane substantially fills both the dimples and the flow channels. The method may include embossing concave dimples onto the plane and the foam core, such that expanding the foam core onto the plane substantially fills the concave dimples. The foam core and sheet may bond without adhesives.