A multi-camera vision system for a vehicle includes a plurality of cameras viewing exterior the equipped vehicle and at least one non-visual sensor sensing exterior of the equipped vehicle. Captured image data and sensor data are provided to a central data processor. At the central data processor, image data is fused with sensor data and processed in order to detect vehicles that are present external the equipped vehicle. The central data processor includes a digital signal processor operable to process data at a data processioning speed of at least 30 MIPS. Via processing at the central data processor of image data and sensor data, a potential hazard present exterior the equipped vehicle is determined to exist. The potential hazard arises from presence of rear-approaching traffic in at least one of (i) a side lane to the equipped vehicle and (ii) a rear lane to the equipped vehicle.

A method for assembling a vehicular interior rearview mirror assembly includes providing a mirror mount and a mirror head. The mirror head includes a transparent mirror frame and a mirror reflective element accommodated at the transparent mirror frame. The transparent mirror frame has a patterned front side having a plurality of channels established thereat and a rear side opposite the patterned front side. An illumination source is provided at the mirror head. The patterned front side of the transparent mirror frame is patterned to reflect light emitted by the illumination source, when powered, so that an illumination pattern is visible to a person viewing the rear of the transparent mirror frame. The mirror head is pivotally mounted at the mirror mount.

High quality flexible optical mirrors (in a single or multi-layer implementation) are fabricated from polymer matrix composite material(s) by replication, cast-spinning, and 3-D printing processes. These mirrors are suited as controllable mirrors for different applications including telescope mirrors. The mirrors made from smart materials (carbon nanotubes in epoxy) attain controlled properties that may be changed by application of external stimuli, including stress, temperature, moisture, electric and magnetic fields, as well as electromagnetic fields. When formed with non-ferrous metal particles embedded in epoxy, the mirrors are suited for cryogenic operations. The mirrors formed with the ferromagnetic/epoxy material can be deformed and steered by magnetic or electromagnetic fields.

A polygon mirror made of plastic is provided. The polygon mirror has a plurality of reflecting surfaces, a first surface intersecting the plurality of reflecting surfaces at a first side, a second surface intersecting the plurality of reflecting surfaces at a second side opposite to the first side, with a through hole provided to extend through the first surface and the second surface at a center of the polygon mirror. The polygon mirror includes a plurality of gate marks of injection molding. When viewed from an extending direction of the through hole, the gate marks are located on straight lines passing through the center and vertices of the first surface, and are rotationally symmetric with respect to the center.

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 mirror configured to reflect light to the imaging camera. The DOE or hot mirror 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.

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 mirror configured to reflect light to the imaging camera. The DOE or hot mirror 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.

Method and device for producing an adhesive bond between a first component and a second component (optical element) for microlithography. The method involves: introducing the first and second components into a positioning device for changing the relative position between the first and second components, calibrating a first relative position, in which a distance between the first and second components has a first value defining a predefined adhesive gap, calibrating a second relative position, in which a distance between the first and second components has a second value greater than the first value, applying adhesive to the first component while the first and second components are at a distance greater than the first value, and setting the first relative position while forming the adhesive bond between the first and second components. Calibrating the first and second relative positions are carried out before the adhesive is applied to the first component.

Methods of infiltrating a three-dimensional part with a resin are disclosed. The methods include designing a part to be printed, the part having at least one inlet and an infill pattern. The methods include using three-dimensional printing to print the designed part. The methods further include infiltrating the printed part using a resin delivered to an interior of the part via the at least one inlet to surround the infill pattern with the resin. The methods additionally include allowing the infiltrated resin to cure.