Abstract: The present disclosure relates generally to roofing products, for example, suitable for use covering and protecting the roofs of structures. The present disclosure relates more particularly to a roofing product including an upper section and an exposed section. The roofing product includes a substrate having a top surface and a bottom surface, and a plurality of zones of roofing granules disposed on the top surface of the substrate. The plurality of zones includes first, second and third zones within the exposed section. The first zone includes a first collection of algae-resistant roofing granules and has a first algae-resistance intensity. The second zone includes a second collection of algae-resistant roofing granules and has a second algae-resistance intensity. The third zone has a third algae-resistance intensity that is different from the first algae-resistance intensity.

Abstract: A system may include a display having a housing, a cover lens coupled to the housing, a light plate assembly in the housing, a diffuser that overlaps the light plate assembly, a louver layer that overlaps the diffuser, and a ring light source that emits additional light around the periphery of the light plate assembly and through the cover lens. The light plate assembly may include an array of light-emitting components. To improve the efficiency and contrast of the light plate assembly, reflective fill material may be formed around each light-emitting component, and absorptive fill material may surround the reflective fill material. The absorptive fill material may absorb ambient light, while the reflective fill material may redirect stray light out of the display. Dam material may surround the absorptive fill material and/or the reflective fill material.

Abstract: A projection screen, with a design in which the apexes of multiple triangular pyramidal units of the projection screen in an array arrangement change gradually according to a predetermined relation, an image light shone from a projector is reflected by a microstructure layer having the triangular pyramidal units and then converged in a range centered around the human eyes, so as to reduce the degree of difference in brightness at different viewing positions, thus ensuring that the projection screen is provided with excellent uniformity and high gain.

Abstract: A system may have lights for providing illumination. The lights may be electrically adjustable so that the color and pattern of the illumination may be varied. Sensor data and/or other data may be used in determining how to adjust the lights. A light may have a light source such as a white light source or multicolored light source, a light collimator that receives light from the light source, and an adjustable lens array that receives collimated light from the light collimator and outputs corresponding adjustable vehicle illumination. The adjustable lens array may have fixed and/or adjustable lens elements and corresponding electrically adjustable light modulator elements.

Abstract: An antifouling dispersant composition having an alcohol polyoxyethylene (EO) ether (EO number 1-14), represented by the general formula wherein R is an alkyl with about 3-20 carbon atoms; and n is 1-14.

Abstract: Methods and compositions for inhibiting carbonyl-based fouling of basic wash systems. The methods comprise contacting the hydrocarbon stream that is or will be subjected to such washing with water soluble or water dispersible copolymers comprising repeat units of 1) ethylenically unsaturated monomers such as acrylic acid with one or more 2) other repeat units such as alkyl acrylates, allyl ethers, ethoxylated allyl repeat units, etc. In other embodiments, a third repeat unit 3) is present and may comprise a hydrophobic moiety such as a styrene repeat unit. The compositions may be terpolymers comprising repeat units 1), 2), and 3).

Abstract: The present disclosure relates generally to roofing products, for example, suitable for use covering and protecting the roofs of structures. The present disclosure relates more particularly to a roofing product including an upper section and an exposed section. The roofing product includes a substrate having a top surface and a bottom surface, and a plurality of zones of roofing granules disposed on the top surface of the substrate. The plurality of zones includes first, second and third zones within the exposed section. The first zone includes a first collection of algae-resistant roofing granules and has a first algae-resistance intensity. The second zone includes a second collection of algae-resistant roofing granules and has a second algae-resistance intensity. The third zone has a third algae-resistance intensity that is different from the first algae-resistance intensity.

Abstract: A system may have an exterior display. The exterior display may display symbols that correspond to intended actions for the system or instructions for nearby viewers. The exterior display may include an array of light-emitting diodes, a collimator, a one-way filter to prevent sunlight from washing out the display, and a cover layer. The one-way filter may include a microlens array and a masking layer. The collimator is configured to collimate light from the array of light-emitting diodes and provide the collimated light to the one-way filter. The microlens array receives the collimated light and focuses the collimated light through a plurality of holes in the masking layer. In this way, the majority of display light is passed through the one-way filter towards a viewer. However, the majority of ambient sunlight is blocked by the masking layer, thus preserving a high contrast for the exterior display even in bright sunlight.

Abstract: An optical component, an optical module, and a communication device are provided. The optical component includes a chip (11), a fiber array unit (12), and at least one fastener (13). The fiber array unit (12) is located on a side of the chip (11), the fiber array unit (12) includes at least one optical fiber (121), at least one waveguide (141) is disposed on a surface of the chip (11), and matching glue is filled between an end face of the waveguide (141) and an end face of the optical fiber (121). One end of the fastener (13) is bonded to the chip (11) by using fastening glue, and the other end is bonded to the fiber array unit (12) by using the fastening glue. Bonding strength of the fastening glue is greater than bonding strength of the matching glue.

Abstract: A head-up display screen, a head-up display assembly, and a vehicle are provided. The head-up display screen is attached to an inner side of an attachment surface of a windshield and configured to reflect image light emitted towards the windshield. The head-up display screen includes a functional layer, a reflective layer, and a protective layer that are sequentially arranged in a direction from the windshield to a driving position. The functional layer includes prism microstructures protruding from the inner side of the attachment surface of the windshield. The reflective layer is at least attached to lower inclined surfaces of the prism microstructures and is configured to reflect the image light towards the driving position. The protective layer covers the reflective layer and the functional layer.

Abstract: An antifouling dispersant composition having an alcohol polyoxyethylene (EO) ether (EO number 1-14), represented by the general formula (I), wherein R is an alkyl with about 3-20 carbon atoms; and n is 1-14.

Abstract: The present application provides a projection screen and a projection system. The projection screen includes an optical structure layer and a reflective layer, where the optical structure layer includes a plurality of microstructure units; each of the plurality of microstructure units include a first sidewall and second sidewalls; the reflective layer covers at least part of the first sidewall to form a first working surface, and the reflective layer covers at least part of the second sidewalls to form second working surfaces, respectively; the first working surface deflects an input image beam, and at least part of the input image beam is transmitted to viewer's field and the second working surfaces; and the second working surfaces deflect an input image beam came from the first working surface, and the input image beam came from the first working surface is transmitted to the viewer's field. The present application improves the brightness evenness of the projection screen.

Abstract: A system may have lights. The lights may be moved using a positioner. Control circuitry may use sensor circuitry to monitor the environment surrounding the system. The sensor circuitry may include one or more sensors to measure the shape of a surface in front of the system and the location of the surface relative to the system. The sensor circuitry may also measure light illumination on the surface. Based on the known shape of the surface in front of the system and the distance of the surface from the system, the control circuitry can predict where a light should be aimed on the surface. By comparing predictions of light illumination on the surface to measurements of light illumination on the surface, the system can determine how to move the light with the positioner to align the light.

Abstract: A system may have lights produce illumination. A light may be provided with a collimated light source that produces collimated light. The collimated light source may use lenses or reflective optical elements to produce the collimated light. The light may have an array of light elements each of which emits a respective beam of the illumination. Each light element may have a preshaping lens that receives the collimated light and produces corresponding preshaped output light and an output lens that receives the output light from the preshaping lens and produces a corresponding beam of the illumination. An electrically adjustable shutter may be located between each preshaping lens and output lens to adjust the illumination between a low-beam pattern and high-beam pattern.

Abstract: An integrated circuit device includes a plurality of integrated circuit chips located on a common substrate, each respective integrated circuit chip from among the plurality of integrated circuit chips including functional circuitry, a clock generator, clock circuitry including clock terminals at an edge of the respective integrated circuit chip, initial clock conductors configured to conduct a clock signal output by the clock generator from the clock generator to the clock terminals, and functional clock conductors configured to conduct the clock signal from the clock terminals to the functional circuitry. Each respective chip is located on the common substrate in an orientation that exposes the clock terminals on the respective chip to face corresponding clock terminals on at least one other chip among the plurality of integrated circuit chips, configured for interconnection of the plurality of integrated circuit chips into a multi-chip module with a common clock.

Abstract: A light-shielding frame and an LED display device are provided and respectively has excellent light-shielding performance and optical display performance. The light-shielding frame includes a retaining wall and hollow grids; the retaining wall includes first and second retaining walls connected in a stacked manner along a light-emitting direction of the grids, and each grid includes first and second grid portions. The thickness of the first retaining wall decreases from one end thereof close to the second retaining wall to the other end thereof distant from the second retaining wall to form a first draft angle; the thickness of the second retaining wall decreases from one end thereof close to the first retaining wall to the other end thereof distant from the first retaining wall to form a second draft angle; the first retaining wall has the same thickness as the second retaining wall in the connection position thereof.

Abstract: A system may have lights produce illumination. A light may be provided with a collimated light source that produces collimated light. The collimated light source may use lenses or reflective optical elements to produce the collimated light. The light may have an array of light elements each of which emits a respective beam of the illumination. Each light element may have a preshaping lens that receives the collimated light and produces corresponding preshaped output light and an output lens that receives the output light from the preshaping lens and produces a corresponding beam of the illumination. An electrically adjustable shutter may be located between each preshaping lens and output lens to adjust the illumination between a low-beam pattern and high-beam pattern.

Abstract: A vehicle may have lights such as headlights. The lights may be moved using a positioner. Control circuitry in the vehicle may use sensor circuitry to monitor the environment surrounding the vehicle. The sensor circuitry may include one or more sensors such as a lidar sensor, radar sensor, image sensor, and/or other sensors to measure the shape of a surface in front of the vehicle and the location of the surface relative to the vehicle. These sensors and/or other sensors in the sensor circuitry also measure headlight illumination on the surface. Based on the known shape of the surface in front of the vehicle and the distance of the surface from the vehicle, the control circuitry can predict where a headlight should be aimed on the surface. By comparing predictions of headlight illumination on the surface to measurements of headlight illumination on the surface, the vehicle can determine how to move the headlight with the positioner to align the headlight.

Abstract: A system may have lights. A light may include a first light source and a first reflector configured to provide lighting for a high-beam mode and for a low-beam mode. The light may include a second light source and a second reflector configured to provide lighting for a cornering light mode. The lighting provided by the first light source and the lighting provided by the second light source may pass through the same headlight lens aperture. A light blocking structure may provide a cutoff pattern that define the illumination pattern of the low-beam lighting and the cornering lighting. One or more additional light sources may be provided to boost the intensity of a hot spot for high-beam lighting.

Abstract: The present invention discloses a fabrication method and use of a ?40 mm large-size and high-contrast fiber optic image inverter, belonging to the field of manufacturing of fiber optic imaging elements. The light-absorbing glass for preparing the ?40 mm large-size and high-contrast fiber optic image inverter consists of the following components in molar percentage: SiO2 60-69.9, Al2O3 1.0-10.0, B2O3 10.1-15.0, Na2O 1.0-8.0, K2O 3.0-10.0, MgO 0.1-1.0, CaO 0.5-5.0, ZnO 0-0.1, TiO2 0-0.1, ZrO2 0.1-1.0, Fe2O3 3.0-6.5, Co2O3 0.1-0.5, V2O5 0.51-1.5 and MoO3 0.1-1.0. The fiber optic image inverter has the advantages of low crosstalk of stray light, high resolution and high contrast.