Abstract: A problem to be solved by an embodiment of the present application is how to make the structure of a vehicle lamp more compact. According to an embodiment of the present application, an outer lens is provided, wherein the outer lens comprises: a first lens portion; and a reflecting portion, the reflecting portion being disposed on at least one side of the first lens portion, in close contact with the first lens portion, and capable of reflecting a light beam entering the first lens portion so that the light beam is propagated inside the first lens portion. Compared with the prior art, the present application has the following advantages: the structure of the outer lens is more compact, the overall volume of the vehicle lamp is smaller, and the light output is more uniform.

Abstract: A light emitting device includes: a light emitting unit; an optical member configured to transmit or pass light emitted by the light emitting unit, the optical member including: a first region configured to transmit or pass light having a first chromaticity; and a second region configured to transmit or pass light having a second chromaticity different from the first chromaticity; and a movable member configured to move to change a distance between the light emitting unit and the optical member along an optical axis of the light emitting unit.

Abstract: A method for illuminating an environment using an angularly varying light emitting device including determining a target illuminance based on a specification, identifying angular bins corresponding to illuminating one or more spatial zones or areas, and adjusting a first light flux output of at least one light source into angular bins based at least in part on the target illuminance. Adjusting the first light flux output may include adjusting it such that it is different from a second light flux output into a second angular bin. An imager may be used to identify an environment, activity, or estimate or measure the illuminance of the environment. Adjusting the light flux output in a bin may be based on daylight or traditional light fixtures or lamps. An angularly varying light emitting device or system may adjust the light flux output in an angular bin based on a target illuminance.

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate including a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an outer cylindrical portion disposed radially outside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. An opening is provided in a lower portion of the outer cylindrical portion.

Abstract: A spatial light system that may, for example, be used to project image content onto surfaces of a room. The system may include two or more projection units for emitting light onto surfaces within a room. The system may include a controller and two or more projection units, each module including an LED array, an array of light pipes, and a condenser lens. Two or more projection units may be connected to a flexible strip that provides power and data (e.g., serial data) to the projection units, a composable light emitter unit, or a bulb-form projection system. Two or more flex strips or composable light emitter units may be connected together to provide a serially-connected, flexible modular architecture for spatial light systems that allow the projection units to be conformed to a variety of configurations and shapes.

Abstract: Example embodiments relate to methods for assembling optical modules of a luminaire and optical assembly. One example method includes providing a frame with at least one opening. The method also includes providing a plurality of optical modules to the frame, each optical module of the plurality of optical modules being provided to an opening of the at least one opening. Additionally, the method includes providing a support means to each of the plurality of optical modules and/or to each of the at least one opening. Further, the method includes assembling the plurality of optical modules to the frame by plastically reshaping a material portion in contact with the frame and the optical module. When the optical module is assembled to the frame, a first bottom surface of the optical module is substantially at a same level as a second bottom surface of the frame.

Abstract: This disclosure relates to a surgical lighting device comprising a shell (12), a plurality of light sources (24) coupled to the shell, and a closure plate (18) for closing the lighting device by allowing light to pass through. The closure plate comprises a plurality of lens elements, each lens element being configured to collect and focus light from a corresponding light source to generate a light spot of a predetermined diameter located at a predetermined distance from the lighting device. In order to simplify the structure of the lighting device, the light sources and the cover plate are arranged in such a way that the light beams coming from the light sources and received by the associated lens elements arrive at the lens elements without substantial reflection or deflection. The closure plate therefore comprises all the optics necessary for collecting and focusing the light from the light sources.

Abstract: An LED lamp includes a heat sink, an LED light board installed on a front surface of the heat sink, a transparent plate covering on the LED light board, and a buckle assembly. The buckle assembly includes a base fixed to the heat sink, a first limiting portion, a fastener movably connected to the base, and an elastic member with a first end abutting against the base and a second end abutting against the fastener. When the buckle assembly is in a first state, a first portion of the fastener presses on the transparent plate to fix the transparent plate to the heat sink; when the buckle assembly is in a second state, a second portion of the fastener is pressed against the first limiting portion, and the first end of the fastener is detached from the transparent plate, which can manually remove the transparent plate without needing additional tools.

Abstract: A method and an apparatus and system for producing light using LED lighting with output within a predetermined desired color temperature range for commercial lighting uses. A preferred embodiment includes a first and second group of LEDs arranged in an alternating matrix configuration, each group of LEDs configured to produce light in a predetermined color temperature range. In a preferred embodiment, an LED light system includes a tubular LED lamp having substantially the same size and dimensions as a traditional fluorescent lamp tube and a control box for controlling power input and power gain to the first, second, or both groups of LEDs.

Abstract: An eyepiece waveguide includes a set of waveguide layers having a world side and a user side. The eyepiece waveguide also includes a first cover plate having a first optical power and disposed adjacent the world side of the set of waveguide layers and a second cover plate having a second optical power and disposed adjacent the user side of the set of waveguide layers.

Abstract: A luminaire system has a support rail comprising an elongated support profile and a current conducting profile arranged therein, as well as a component (electrical or electronic) with a coupling element for electrically and mechanically coupling the component to the support rail via an opening in the support profile. The luminaire system has a component with a coupling member that electrically couples and mechanically couples various components, said coupling member also having a blocking element.

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.

Abstract: A lighting assembly includes at least one light source array provided in a housing and a light scattering primary transmissive optical element having at least one focal region positioned substantially parallel or concentric with the light source array. Lens features of the optical element may include a Fresnel lens pattern to produce at least one focal region. An auxiliary transmissive optical element may be provided to further control light distribution and brightness uniformity.

Abstract: A system for illuminating an environment, includes a first and second angularly varying light emitting devices operable to adjust light flux output into different angular bins individually, the second angularly varying light emitting device further comprises an imager positioned to receive light reflected from the environment from the first and second angularly varying light emitting devices, wherein when the first angularly varying light emitting device emits first light flux onto on object or individual in the environment and the object or individual occludes the first light flux creating a shadow region on a surface of the environment, the second angularly varying light emitting device emits second light flux from one or more second light sources into an angular bin that illuminates the shadow region. In one embodiment, the shadow region is identified in part by differentiating between a possible dark surface and a region comprising a shadow.

Abstract: A camera-puddle lamp integrated apparatus is disclosed. The apparatus comprising a lens module; an image sensor; a light source; and an optical unit, wherein the image sensor is spaced apart from a rear of the lens module so that the image sensor and the lens module are formed to operate as a camera, the light source is disposed to be coplanar with the image sensor and disposed at a peripheral portion of the image sensor, the optical unit is disposed in front of the light source so that light emitted from the light source is directed to a rear end of the lens module, and the camera-puddle lamp integrated apparatus is formed to operate as a puddle lamp by the light source and the optical unit.

Abstract: An optical light beam projection device, notably for a motor vehicle, includes upstream in the direction of propagation of the light rays, a set of at least two associated submatrices each provided with primary light sources capable of emitting light rays. Downstream, a primary optical system is provided with a plurality of convergent optics, at least one convergent optic being associated with each submatrix and arranged downstream thereof, the separation between the optical axes of two adjacent convergent optics corresponds respectively to the separation between the centers of the corresponding adjacent submatrices. Another subject of the invention is an optical module comprising the device and a motor vehicle headlight.

Abstract: A telecommunications (telecom) system includes cellular transceivers, a core network, and at least one streetlight-mountable telecom support unit providing communications connectivity between the cellular transceivers and the core network. The cellular transceivers may be mounted to other streetlights. The telecom support unit includes a housing mountable to streetlight, a powerline interface, and a communication interface. The powerline interface is integrated or configured though a boundary structure of the housing and connectable to a complementary powerline interface of the streetlight. The communication interface provides communicative coupling to one or more of the remote cellular transceivers and may be configured through a second boundary structure of the housing. The telecom support unit may also include a clamp configured to enable mechanical coupling of the housing to a support structure of the streetlight.

Abstract: An LED package comprising a submount having a top and bottom surface with a plurality of top electrically and thermally conductive elements on its top surface. An LED is included on one of the top elements such that an electrical signal applied to the top elements causes the LED to emit light. The electrically conductive elements also spread heat from the LED across the majority of the submount top surface. A bottom thermally conductive element is included on the bottom surface of said submount and spreads heat from the submount, and a lens is formed directly over the LED. A method for fabricating LED packages comprising providing a submount panel sized to be separated into a plurality of LED package submounts. Top conductive elements are formed on one surface of the submount panel for a plurality of LED packages, and LEDs are attached to the top elements. Lenses are molded over the LEDs and the substrate panel is singulated to separate it into a plurality of LED packages.

Abstract: Lighting device of a motor vehicle headlamp, comprising a lens (1, 10) and at least one light source (2), wherein a lighting pattern (LI) can be generated by the at least one light source (2), wherein the lighting pattern (LI) generated by the light source (2) can be projected in front of the lighting device in the form of a light distribution by means of the lens (1, 10), wherein the lens (1, 10) has at least one projection optics (3, 30, 31) and one projection optics holder (4, 40), wherein at least one receiving means (5, 50, 51) is designed in the projection optics holder (4, 40), wherein the at least one receiving means (5, 50, 51) corresponds to the at least one projection optics (3, 30, 31), the at least one projection optics (3, 30, 31) is accommodated in the at least one receiving means (5, 50, 51), wherein a reference point system (6, 60, 61) is defined in the at least one receiving means (5, 50, 51) for determining a position of the projection optics (3, 30, 31) accommodated in this receiving means

Abstract: A lens including a light entering part having a concave shape in a lower region of the lens, and on which light emitted from a light emitting device is to be incident, and a light exiting part through which the incident light is emitted to an outside of the lens, in which each of the light entering part and the light exiting part has a major axis and a minor axis in plan view, and the major axis of the light entering part is orthogonal to the major axis of the light exiting part, the light entering part includes a light incident vertical surface extending from a lower surface of the lens, and a light incident inclined surface extending upward from the light incident vertical surface, and the light incident vertical surface surrounds the light emitting device.

Abstract: The present disclosure provides a light bar, a backlight assembly and a display device. The light bar includes a substrate; a first metal layer disposed on a first side of the substrate and comprising a plurality of first metal segments disposed at intervals along a length direction of the light bar; a second metal layer disposed on a second side opposite to the first side of the substrate and comprising a plurality of second metal segments disposed at intervals along the length direction of the light bar, a projection of the interval between two adjacent first metal segments on the substrate falls into projections of the second metal segments on the substrate, and a projection of the interval between two adjacent second metal segments on the substrate falls into projections of the first metal segments on the substrate.

Abstract: A lens cover for a plurality of light emitting devices is provided. The lens cover includes a base substrate and an optical lens element. The optical lens element extends from the base substrate and defines a focal center. The optical lens element includes a length and a width and includes an exterior surface and interior surface. The exterior surface extends from the base substrate along an outer perimeter and is symmetrical about the focal center. The interior surface is symmetrical about the focal center.

Abstract: An optical member includes a curved portion comprising an optically transmissive material. The enclosure has an outer surface and an inner surface opposite the outer surface. At least one light redirection feature protrudes from the inner surface. At least one indentation defined on the outer surface is configured to refract light.

Abstract: A light system comprising: (a) a plurality of printed circuit boards; (b) a plurality of sets of light sources on each of the plurality of printed circuit boards that are configured to provide a different lighting function, wherein each of the plurality of sets of light sources include one or more light source that generates light; (c) a plurality of light bars that distribute the light from each of the plurality of sets of light sources; and (d) one or more light guides on each of the plurality of light bars, wherein each of the one or more light guides is aligned with one or more of the one or more light sources so that the light passes from the one or more light sources into one of the one or more light guides and into one of the plurality of light bars to provide one of the different lighting functions.

Abstract: A high-definition vehicular headlamp has a light module configured to produce a matrix of light-emitting points each of which has a coordinate pair. The headlamp generates a light image in front of the vehicle, and the light image is divided into a matrix of pixels that correspond respectively to the light-emitting points of the light module. A specified partial image content is generated in a partial region of the light image. The partial image content acts upon a set of coordinate pairs of light-emitting points, including coordinate pairs having defective light-emitting points that could cause pixel errors. A displacement vector is formed by comparing coordinate pairs of defective light-emitting points with the set of coordinate pairs of the light-emitting points on which the partial image content acts, and the partial image content is reproduced in the partial region of the light image that has been displaced by the displacement vector.

Abstract: A Fresnel lens includes multiple different zones. At least one of the zones may be an asymmetric zone that is radially asymmetric. The asymmetric zone may redirect light received from a light source located within a focal length of the Fresnel lens to a portion of a field of view of an image sensor. In some embodiments, multiple asymmetric zones may be implemented within the same Fresnel lens, which may have different radial asymmetry.

Abstract: A line source lighting system including the following: lamp holder; printed circuit board; a plurality of point light sources; at least one lens, located in a light-emitting direction of the point light source for adjusting the light distribution of the point light source on a plane perpendicular to the length direction of the lamp holder; strip-shaped convex lens array, arranged along the length direction of the lamp holder for converting each point light source into a plurality of continuous sub-point light sources, the sub-point light sources converted by the adjacent point source is connected or coincident. the invention adopts a strip-shaped convex lens array for diffusing light from the point source only in the length direction of the lamp holder to form a line source, which can well prevent the light from diffusing in multiple directions, so that the line source get purified.

Abstract: A luminaire head comprising: a thermally conductive metal body comprising a plate like portion, a tube portion and at least one cooling fin; said plate like portion extending in a longitudinal direction (L) of the metal body and having a flat first surface and a second surface opposite said first surface, said tube portion extending in said longitudinal direction at said second surface; said at least one cooling fin extending away from said second surface adjacent to the tube portion; and at least one support substrate with a plurality of light emitting elements, said at least one support substrate being arranged against the first surface, at least in an area opposite the tube portion.

Abstract: Methods and apparatus for fabricating light-emitting diodes (LEDs) that include polarizing or wavefront-altering optical components are described in which additional optical components are added to the LED package to filter or modify the polarization of the emitted photons. Packaged LEDs that include polarizing or wavefront-altering optical components are also described. The packaged LEDs may emit infrared light that is polarized or otherwise altered by the optical components added during the fabrication process.

Abstract: The present disclosure provides a fire resistant LED module, including a metal mask and a printed circuit board (PCB). A layer of flame-retardant glue is coated on one side, facing the PCB, of the metal mask, and the metal mask is pasted with the PCB through the flame-retardant glue. A sub-black insulating surface layer is disposed on the metal mask. The present disclosure further provides a manufacturing method of the fire resistant LED module, including following steps: processing surfaces of the metal mask after etching to form the sub-black insulating surface layer; coating the flame-retardant glue on one surface of the metal mask facing the PCB; and covering the metal mask on the PCB through the flame-retardant glue. The sub-black insulating surface layer is formed through processing the surfaces of the metal mask 1.

Abstract: A modular lighting system and method having a control PCB, an LED and a housing with a housing base. The LED is attached to a module PCB, wherein the LED and the module PCB are part of an LED module, wherein the module PCB of the LED module is electrically connected to the control PCB.

Abstract: LED retrofitting system for retrofitting High Intensity Discharge Lighting (HID) fixtures with Light Emitting Diode (LED) arrays and the method for retrofitting.

Abstract: A light collimation device, a backlight module and a display panel are provided. The light collimation device includes a lampshade and a light guiding part, wherein the lampshade includes a plurality of curved reflecting parts, a first total reflecting part and a second total reflecting part. The curved reflecting part is configured to reflect part of light from a light source arranged at a focal point of curved reflecting part to the first total reflecting part. The first total reflecting part is configured to reflect part of incident light to the second total reflecting part and directly direct another part of light to the light guiding part. The second total reflecting part is configured to reflect incident light to the light guiding part. The light guiding part is configured to cause incident light to propagate in a total reflection.

Abstract: A lens including a light entering part having a concave shape in a lower region of the lens, and on which light emitted from a light emitting device is to be incident, and a light exiting part through which the incident light is emitted to the outside, in which each of the light entering part and the light exiting part has a major axis and a minor axis in plan view, and the major axis of the light entering part is orthogonal to the major axis of the light exiting part, and the light entering part includes a light incident vertical surface extending from a lower surface of the lens and a light incident inclined surface extending upward from the light incident vertical surface.

Abstract: The present disclosure provides a backlight module and a display device. The backlight module includes a tight source layer, a light guiding layer and a dotted layer, a plurality of light emitting units is arranged on the light source layer; a plurality of reflective prism units is arranged on one side of the light guiding layer away from the light source layer, and positions of the plurality of reflective prism units are corresponding to the plurality of light emitting units respectively; the reflective prism unit is configured to reflect a light emitted by the light emitting unit into the light guiding layer and cause total reflection of the reflected light within the light guiding layer; and an optical structure for extracting light from the light guiding layer is provided with the dotted layer.

Abstract: A diffusion lens may include a plurality of diffusion portions which contacts with an LED, is symmetrical to each other with respect to an optical axis which is a straight direction of the light emitted from the LED, and has convex surfaces.

Abstract: Device for acquiring images inside a vehicle, comprising an illuminator to illuminate a field of view, an image sensor that is arranged to acquire images from the field of view, and an optical element having a light-transparent portion and a light-blocking portion, wherein the light-transparent portion is arranged so that light of the illuminator being emitted to the field of view passes through the light-transparent portion, and wherein the light-blocking portion is arranged to block light of the illuminator being emitted in a direction towards the image sensor.

Abstract: A ruggedized, high efficiency, diffuse luminaire with a shaped lens diffuser that is composed of a semi-soft, flexible material that helps withstand damaging impacts and protects the internal electrical components. The lens diffuser may enclose one or more internal mirrors or employ an innovative Fresnel-like lens that projects light omni-directionally and that wraps around the inside of the lens for more efficient distribution of illumination and the elimination of up and down loss through re-projecting vertical losses onto the horizontal plane. The lens diffuser may incorporate a UV filtration compound molded directly into the materials composing the lens rather than applied or painted onto the surface or surfaces of the lens.

Abstract: A spotlight and a method of controlling the spotlight with an external device. The spotlight having a first light source including a center spotlight, a second light source including area lights, a power supply, a transceiver configured to communicate wirelessly with the external device, and a processor. The processor is operable to receive a first input from the external device specifying a first amount of power to be provided to the first light source, and receive a second input from the external device specifying a second amount of power to be provided to the second light source. The processor is also operable to control the power supply to provide the first amount of power to the first light source in response to the first input, and control the power supply to provide the second amount of power to the second light source in response to the second input.

Abstract: An improved vehicle light apparatus including an auxiliary light having a housing defining a front opening extending in a horizontal direction and a vertical direction perpendicular to the horizontal direction. A light emitting device is mounted in the housing. A transparent cover is mounted over the front opening. A rib extends rearwardly from the housing opposite the front opening and a plurality of fins are mounted on the rib.

Abstract: The embodiments of the invention provide a multi-focal collimating lens and a bi-function headlight assembly. With the relative positions referring to the mounting position of the multi-focal collimating lens within the bi-function headlight assembly, the multi-focal collimating lens includes a lower collimating lens part and an upper collimating lens part located on top of the lower collimating lens part. One focal point of the lower collimating lens part is located on a vertical symmetry plane of the lower collimating lens part, and two focal points of the upper collimating lens part are symmetrically located on both sides of a vertical symmetry plane of the upper collimating lens part, so that a cut-off line of a low beam can be generated in a far-field light pattern of the multi-focal collimating lens.

Abstract: A lighting fixture comprising: an elongate housing having an outer surface and an inner surface and having an elongate opening extending in a longitudinal direction of the housing; wherein the elongate housing comprises a first wall and a second wall extending towards the elongate opening; a light module for emitting light having a first face through which light is emitted and an opposite second face; a plurality of retainer means provided at the second face and configured for engaging the first and second walls such that the light module is retained within the elongate housing; a stopper means for preventing inward displacements of the light module past a predetermined boundary.

Abstract: A programmable glare-free high beam device onboard a vehicle includes a plurality of light sources and an input coupler for combining light from the plurality of light sources. A focusing lens is adapted to receive light emitted from the input coupler and focus the light onto a digital micro-mirror device (DMD). The DMD has a plurality of individual micro-mirrors for reflecting light received from the focusing lens. A projection lens is adapted to receive light from the DMD and to project the light to form a spot distribution of a high beam light pattern. A plurality of auxiliary optics are adapted to form a broadened distribution of the high beam light pattern. A controller is provided for adaptively controlling the plurality of LEDs, the DMD, and the plurality of auxiliary optics to actively dim or turn off portions of the high beam light pattern.

Abstract: A strip light used in showcase, comprising strip light holder; circuit board; at least three light sources; at least three optical components; the optical components comprising first light splitting member, including two first light splitting surfaces distributed on two sides of the optical axis of the light source; the first light splitting surface directs light of the light source at the optical axis and its vicinity outward along the width direction of the strip light holder and projects the light to the distal end of the illumination surface; light stretching member, being located between two adjacent groups of first light splitting members, and used for diffusing the light of the light source along the length direction of the strip light holder and projecting it onto the illumination surface directly in front of the first light splitting member of the adjacent group.

Abstract: A pixel light source includes having a light source array, an optical system and an imager matrix arrangement, wherein the optical system maps light radiated by the light source array onto the imager matrix arrangement, the light source array includes a plurality of light emitting diode elements and a plurality of LARP elements, and the optical system is configured to map the light radiated by at least one of the LARP elements into a gap in the angular aperture situated between the light radiated by the light emitting diode elements.

Abstract: A virtual image interaction method and relevant devices are disclosed. The virtual image interaction method for use in a master virtualization device includes: projecting a first virtual image to a first predetermined position, and transmitting projection data for projection of the first virtual image to a slave virtualization device; acquiring an operational instruction for the first virtual image; updating the first virtual image in accordance with the operational instruction, to acquire a second virtual image; and projecting the second virtual image to the first predetermined position, and transmitting projection data for projection of the second virtual image to the slave virtualization device.

Abstract: A warning light beacon having a base, a lens providing a dome over the base, and a circuit board extending upright from the base perpendicular to the base. The circuit board has two surfaces with mounted light sources, such as LEDs, providing a same or different colors of light. One or more light blocking elements, each preferably a non-operative electrical component, are mounted upon each of the surfaces, each between groups of one or more light sources, to dispose each of the groups to substantially illuminate a different one of a plurality of regions about 360 degrees of the lens. Sequential illumination of each of the regions along the 360 degrees of the lens by at least one light source associated with the region enables perception of rotating light outward via the lens. Such regions along the lens may also be illuminated simultaneously to provide solid-on or flashing patterns.

Abstract: Apparatus and system for producing light using LED lighting with output within a predetermined desired color temperature range for commercial lighting uses. A preferred embodiment includes a first and second group of LEDs arranged in an alternating matrix configuration, each group of LEDs configured to produce light in a predetermined color temperature range. In a preferred embodiment, an LED light system includes a tubular LED lamp having substantially the same size and dimensions as a traditional fluorescent lamp tube and a control box for controlling power input and power gain to the first, second, or both groups of LEDs.

Abstract: Systems and methods are provided for forming a composite optical element having a transparent lens carrier and a lens attached to the transparent lens carrier. The lens is formed from liquid silicone rubber. The Young's modulus of the material of the lens carrier is higher than that of liquid silicone rubber. The lens carrier includes a plurality of surface features configured to interface with the transparent lens.

Abstract: A light source guiding device comprises a light source refracting unit and a light source reflecting unit. The light source refracting unit receives a part of a light beam emitted by a light source, and the light source refracting unit utilizes geometric shapes disposed on inner and outer surfaces to form a rectangular light spot on a light-receiving surface by the part of the light beam. The light source reflecting unit receives another part of the light beam emitted by the light source, and the light source reflecting unit reflects the other part of the light beam emitted by the light source to form another rectangular light spot by using geometric shapes disposed on its surface, and the two rectangular light spots are overlapped with each other to enhance an illuminance of the rectangular light spot.