Methods of forming a mirror by bonding a faceplate to a core structure using adhesive formulations that include fused silica particles having diameters that range between 1 to 60 micrometers with an average diameter of the silica particles being between 8 to 10 micrometers. The adhesive formulation further includes an activator including 25 to 50 weight % sodium silicate, 25 to 50 weight % sodium hydroxide and a liquid. The fused silica particles constitute 70 to 80 weight % of the adhesive formulation and the activator constitute 20 to 30 weight % of the adhesive formulation.

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.

The present invention is a unique process of manufacturing rigid members with precise “shape keeping” properties and with reflective properties pertaining to radio frequency energy, so that air, land, sea and space devices or vehicles may be constructed including parabolic reflectors formed without discrete permanent layering. Rather, such parabolic reflectors or similarly, vehicles, may be formed by homogeneous construction where discrete layering is absent, and where energy reflectivity or scattering characteristics are embedded within the homogeneous mixture of carbon nanotubes and associated graphite powders and epoxy, resins and hardeners. The mixture of carbon graphite nanofiber and carbon nanotubes generates higher electrode conductivity and magnetized attraction through molecular polarization. In effect, the rigid members may be tuned based on the application. The combination of these materials creates a unique matrix that is then set in a memory form at a specific temperature, and then applied to various materials through a series of multiple layers, resulting in unparalleled strength and durability.

A method for manufacturing a stereoscopic image forming device includes a process of molding, from a first transparent resin, molding base materials 22 each including inclined surfaces 17 and vertical surfaces 18 on one side of a transparent plate member 16, a process of manufacturing a pair of intermediate base materials 28 by forming mirror surfaces on the vertical surfaces 18 of the respective molding base materials 22, and a process of manufacturing first and second optical control panels 13 and 14 integrated together by making the pair of intermediate base materials 28 face each other so that their vertical surfaces 18 are orthogonal to each other in a plan view, and joining together the intermediate base materials by filling the grooves 19 with a second transparent resin with a lower melting point than and a refractive index equal or approximate to the first transparent resin.

A manufacturing method of a polygonal mirror using a metal mold including a first mold, a second mold, a third mold, and a fourth mold includes a step of forming the molded member by providing the third mold and the fourth mold between the first mold and the second mold in a state in which the third mold and the fourth mold are in contact with each other and then by injecting a resin material into the metal mold, and a step of separating the third mold from the first crossing surface of the molded member in a direction crossing the first crossing surface.

An object of the present invention is to provide a method for producing a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range. Another object of the present invention is to provide a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range. The method for producing a reflective layer of the present invention includes: a step 1 of applying a composition selected from the group consisting of the following composition X and the following composition Y onto a substrate to form a composition layer; a step 2 of heating the composition layer to align a liquid crystal compound in the composition layer into a cholesteric liquid crystalline phase state; a step 3 of cooling or heating the composition layer in a cholesteric liquid crystalline phase state to reduce a helical pitch; and a step 4 of irradiating at least a partial region of the composition layer with light, between the step 1 and the step 2, between the step 2 and the step 3, or after the step 3, to photosensitize a chiral agent A or a chiral agent C in the composition layer. Composition X: a composition including a liquid crystal compound, a chiral agent A whose helical twisting power is changed upon light irradiation, and a chiral agent B whose helical twisting power is increased upon cooling or heating. Composition Y: a composition including a liquid crystal compound and a chiral agent C whose helical twisting power is changed upon light irradiation and whose helical twisting power is increased upon cooling or heating.

A mirror includes an ultralight substrate. A reflective layer is disposed on the ultralight substrate. A bonding layer may be disposed between the reflective layer and the substrate.

The present application provides a safe and unbreakable PET film mirror and a preparation method thereof. The PET film mirror includes: a PET mirror surface; an aluminum alloy mirror frame disposed beneath the PET mirror surface; and an adhesive layer coated on a surface of the aluminum alloy mirror frame in contact with the PET mirror surface. The PET mirror surface includes: a PET-based film layer; a metal electroplated layer and an anti-oxidation coating, sequentially disposed on a back surface of the PET-based film layer; and a scratch-resistant resin layer disposed on a front surface of the PET-based film layer. The mirror according to the present application is light in weight, unbroken and highly safe. Even if damaged, it will not cause personal injury. In addition, the preparation method according to the present application has a simple process, occupies a small area, consumes few energy, and causes no pollution and damage to the environment.

A method for manufacturing an optical system with an optical component made of a brittle-hard material is described, comprising the steps of; producing at least one optical functional surface at the optical component; mounting of the optical component on a processing machine and producing several reference surfaces and mounting surfaces at the optical component or at least one insert body permanently connected to the optical component by at least one machining tool of the processing machine; measuring the shape and position of the optical functional surface in a coordinate system related to the reference surfaces; performing a correction machining at least once, in which the shape and position deviation of the optical functional surface relative to the reference and mounting surfaces is reduced; and installation of the optical component in a housing structure of the optical system at the mounting surfaces.

A fast steering optical mirror for laser beam deflection, moved by at least one rotational axis, including: a plate containing a plurality of carbon fiber layers laid up in a resin, wherein the plate includes a front face, at least a portion of the front face being polished and coated for laser light reflection; and wherein a surface normal of the front face is aligned orthogonal to the at least one rotational axis. A method of manufacturing fast steering optical mirror including: forming a plate having a front face and a back face by laying up a plurality of carbon fiber layers in a resin; aligning the plate so that a surface normal of the plate is orthogonal to at least one rotational axis of the mirror; and polishing and coating at least a portion of the front face for light reflection.