77results about "Hollow light guides" patented technology

A method of making a thin waveguide illumination system using side-emitting LED packages is disclosed. The method includes providing an optically transmissive sheet with first and second broad-area surfaces, a light coupling area near the first edge, and a two-dimensional light extraction area on at least one of these surfaces. This light extraction area includes a plurality of light extraction elements with variable density. An LED strip having a heat-conducting printed circuit and a linear array of side-emitting LED packages is positioned parallel to the first edge at or near the first edge, with the major surface of the heat-conducting printed circuit extending generally parallel to the first and second broad-area surfaces. A broad-area reflector is positioned parallel to the second broad-area surface of the sheet. The density of the light extraction elements within the two-dimensional light extraction area increases with distance from the light coupling area.

An optical hollow waveguide component (25), particularly for homogenizing EUV light, comprises two support elements (26) and two insert elements (28), which are particularly plate-shaped. The insert elements (28) are inserted between the support elements (26) such that a hollow waveguide (11) is formed between the insert elements (28). The hollow waveguide component (25) is particularly suitable for use in an illumination optic for a mask inspection system (1) for use with EUV illumination light. An optical system with such an illumination optic and a mask inspection system with the optical system are also described.

An antiresonant hollow core optical fibre (30) comprises: an outer jacket (12); cladding capillaries comprising a plurality of primary capillaries (14) which are each bonded to a surface of a cavity (34) within the outer jacket (12); and at least two hollow cores (18a,18b), each hollow core (18a,18b) formed by a void defined within a ring comprising a maximum of four primary capillaries, each primary capillary (14) of the ring being spaced apart from adjacent primary capillaries (14) around the ring.

A light pipe assembly is provided which complies with the International Electrotechnical Commission (IEC) IP ratings for dirt and water ingress while reducing the amount of hardware typically required to mount each light pipe. The light pipe assembly includes a light pipe and an adapter. Each adapter includes a vertically extending center channel which receives and connects a light pipe's first end to an LED mounted upon a printed circuit board (PCB). Each light pipe is intended to project through the hole of an electronic device's panel. Furthermore, each light pipe's second end has flange and a press-fit region, preferably in the form of circumferential ribs, which forms a press-fit engagement with a panel.

A method of making a thin waveguide illumination system using side-emitting LED packages is disclosed. The method includes providing an optically transmissive sheet with first and second broad-area surfaces, a light coupling area near the first edge, and a two-dimensional light extraction area on at least one of these surfaces. This light extraction area includes a plurality of light extraction elements with variable density. An LED strip having a heat-conducting printed circuit and a linear array of side-emitting LED packages is positioned parallel to the first edge at or near the first edge, with the major surface of the heat-conducting printed circuit extending generally parallel to the first and second broad-area surfaces. A broad-area reflector is positioned parallel to the second broad-area surface of the sheet. The density of the light extraction elements within the two-dimensional light extraction area increases with distance from the light coupling area.

An operating device for an electrical appliance such as an oven has a control panel with a front face and with a rear face, and a rotary control unit on the rear face of the panel, which has a rotary shaft which protrudes through a panel opening beyond the front face of the control panel and supports a control knob there. The rotary control unit has a light source, wherein an annular light guiding device is arranged in the panel opening which extends to behind the panel opening as far as the light source. The light guiding device is made of light guiding material and completely surrounds the rotary shaft. Illuminated areas made of light guiding material are provided in the control knob, and extend from a rear face of the control knob close to the light guiding device to a lateral face and / or front face of the control knob. Light can thus be passed easily through the panel to the control knob.

The present invention uses a system of primarily metallic pairs of mirrors which are at an angle of 90° to one another and an angle of 45° to the line axis and which cover only one inner wall of a line for fluids in a parallel arrangement, while the other walls are simply reflective. Through small holes in the bottom of the trough between two mirrors of a pair, the useful radiation from, for example, UV LEDs enters the line in concentrated form. The double reflection in the pairs of mirrors returns the radiation in each section of the line to where it originates - at least the axial component - while at the same time a lateral offset of the beams leads to a chain reflection around the walls of the line, wherein this takes place only within a delimited region which has approximately the extension of the beam cone of the light source onto the opposite wall, which is also slightly concave in order to achieve better focusing of the beams. The more chain reflections can take place here, the more the radiation level within the delimited section intensifies. It is thereby possible to achieve considerably high irradiation values in the line even with a relatively weak UV light source and thus to ensure very effective disinfection of the fluids contained in the line.

A luminaire. The luminaire includes a geometric solid. The geometric solid has a length and includes a first geometric solid portion which includes an optically clear material and a second geometric solid portion which includes the optically clear material, wherein the first and second geometric solid portions are conjoined. The luminaire further includes a cavity defined by the first and second geometric solid portions, a plurality of discrete light sources positioned to emit light into the cavity, a first aperture positioned to allow a first portion of light in the cavity to pass into the first geometric solid portion, and a second aperture positioned to allow a second portion of the light in the cavity to pass into the second geometric solid portion.

A method and system for reducing the effects of glare in a system that comprises a picture generating unit or projector, such as a holographic projector. For example, the system may be a head-up display (HUD), which is configured to display a picture to a viewer, without requiring the user to look away from their usual, or required, viewpoint. For example, the HUD system may be comprised within a vehicle. The glare in the system may be caused by light, other than the light of the picture, being incident on a surface comprising a screen or a window, through which the user looks at their usual, or required, viewpoint. For example, the surface may comprise a windshield in a vehicle. The light that causes the glare may be ambient light, such as sunlight. In particular, the method and system are provided for reducing the effects of glare in a system that comprises a waveguide in conjunction with the picture generating unit. The waveguide may be operable to act as an exit pupil expander.

A keypad controller includes a housing portion, which houses therein: a printed circuit board assembly (PCBA) including a plurality of light sources arranged in a single line thereon; a carrier plate arranged adjacent the PCBA, the carrier plate comprising a through opening, aligned with the light sources; a light pipe arranged adjacent the through opening; a plurality of control buttons arranged on the carrier plate on either side of the light pipe. The keypad controller also includes a faceplate having an opening corresponding to the arrangement of the control buttons and light pipe on the carrier plate, permitting access thereto, the faceplate securable to the housing portion. A light pipe, for use in an electronic control device, includes a longitudinal extension and includes a rear face and a front face opposite thereto.

Disclosed are transparent energy relay waveguide systems for the superimposition of holographic opacity modulation states for holographic, light field, virtual, augmented and mixed reality applications. The light field system may comprise one or more energy waveguide relay systems with one or more energy modulation elements, each energy modulation element configured to modulate energy passing therethrough, whereby the energy passing therethrough may be directed according to 4D plenoptic functions or inverses thereof.

An illumination light guide for guiding EUV or DUV illumination light in an illumination optics unit, comprising a tubular guide main body, a guide input and a guide output, wherein the guide main body forms an interior for guiding the illumination light along a longitudinal axis from the guide input to the guide output and wherein a cross-sectional shape of the interior defined perpendicular to the longitudinal axis changes along the longitudinal axis.

A control device for an electrical appliance such as an oven has a control panel with a front and a back, and a rotary control device on the back of the panel. The rotary control device has a rotating shaft that projects through a panel opening beyond the front of the control panel and supports a control knob there. The rotary control device has a light source, with an annular light guide device arranged in the panel opening and extending behind the panel opening to the light source. The light guide device is made of light-guiding material and completely surrounds the rotary shaft. Illuminated areas made of light-guiding material are provided in the control knob and run from a back of the control knob near the light guide device to a lateral side and / or front of the control knob. This allows light to be easily directed through the control panel to the control knob.

The invention relates to a lighting element (1) comprising - a hollow optical fiber (2) with a coupling point (3) for coupling light and - a light coupling element (4) connected to the light guide (2). According to the invention, - a fastening structure (5) is formed on an outer cladding surface of the optical fiber (2) and an inner cladding surface of the optical fiber (2) facing a cavity of the optical fiber (2) has a white or mirrored surface. The invention further relates to a vehicle comprising at least one component covered with a textile and / or leather and at least one lighting element (1).

A backlight for an LCD display has an optically transmissive sheet with first and second broad-area surfaces, four edges, a light mixing region adjacent to a first edge, and a light extraction region. The mixing region has smooth planar surfaces for guiding light via total internal reflection. Light extraction features are distributed across the extraction region with increasing density toward the opposing edge. A flexible LED strip extends parallel to the first edge, with a flexible circuit and side-emitting LED packages of less than 2 mm in height. The LED packages have light emitting surfaces perpendicular to the circuit's major surface. A metallic housing partially encases the LED array with a linear channel providing light passage to the mixing region. At least one extraction feature has a surface relief microstructure separated from other features and edges by smooth planar portions of the sheet.

The invention relates to a light pipe assembly and a lighting and / or signaling device including the light pipe assembly. The light pipe assembly includes a first section configured to receive light from a light source, a second section extending from the first section, and a third section extending from the second section. The second section consists of a shaping optical structure that is disposed at a side opposite to the first section and integrated within the light pipe. The second section being configured to transmit the received light in a first direction towards the shaping optical structure by total internal reflection. The third section being curved is configured to receive light from the shaping optical structure, and is configured to change direction of light in a direction different from the first direction and towards a light exit surface.

Disclosed is a planar lighting device and more particularly, a planar lighting device including a light emitting device. The planar lighting device includes a plurality of light sources arranged on a first surface of a circuit substrate, the light sources mounted thereon, a light regulator disposed in an edge of the first surface, the light regulator regulating luminance difference caused by difference in distance between a plurality of light sources close to the edge, and an optical sheet disposed on the light sources.

A collimated backlight module (100), its fabrication method, and a display device thereof. The fabrication method of the collimated backlight module (100) includes: providing a light guide plate (110); forming a protective layer (410) on the light-emitting side of the light guide plate (110), the protective layer (410) simultaneously covering the light-emitting area (A1) and the non-light-emitting area (A2) on the light-emitting side; forming a hollow area (Q1) on the protective layer (410) to expose the light-emitting area (A1) of the light guide plate (110); and forming a light-collecting grating (310) on the light-emitting area (A1) of the light guide plate (110).

A display device including a lower cover, a liquid crystal panel, and a backlight unit disposed between the liquid crystal panel and the lower cover and providing light to the liquid crystal panel, wherein the backlight unit includes a circuit substrate disposed on an upper surface of the lower cover, a first adhesive disposed between a lower surface of the circuit substrate and the upper surface of the lower cover, a light source mounted on an upper surface of the circuit substrate, and a reflection layer disposed on the circuit substrate, and the first adhesive is positioned behind the light source.

Illumination light guide (32; 39; 49; 50) for guiding EUV or DUV illumination light (5) in an illumination optic (1), comprising a tubular guide body (51), a guide inlet (55), and a guide outlet (50), wherein the guide body (51) forms an interior space for guiding the illumination light (3) from the guide inlet (55) to the guide outlet (56) along a longitudinal axis (L), and wherein a cross-sectional shape of the interior space defined perpendicular to the longitudinal axis (L) changes along the longitudinal axis (L).

The present application is entitled "Selective Propagation of Energy in Light Fields and Holographic Waveguide Arrays". The disclosed embodiments include an energy waveguide system having a waveguide array and an energy suppression element configured to substantially fill the waveguide element aperture and selectively propagate energy through the waveguide array along some energy propagation paths. In embodiments, such an energy waveguide system may define energy propagation paths through the waveguide array according to a 4D plenoptic system. In embodiments, the energy propagated through the energy waveguide system may include energy propagation for stimulating any sensory receptor response, including visual, auditory, somatosensory systems, and the waveguide may be incorporated into a holographic display or a polymeric bidirectional seamless energy surface capable of receiving and transmitting two-dimensional light fields or holographic energy through waveguides or other 4D plenoptic functions that define energy convergence within an observation volume.

The present application relates to a light strip (1) comprising - at least one ligament body (2) for encircling the animal's leg, as well as, - at least one supply unit (3) for the provision of electrical energy, - at least one lighting device (4) for generating and emitting light, and - at least one locking device (5) with which the opposite ends (6) of the ligament body can be coupled together in a state encircling the animal leg, In order to provide a light strip (1) for an animal leg that eliminates the problems of the prior art, it is proposed according to the invention that in a coupled state of the ends (6) of the strip body (2) light can be emitted from an outer surface (7) of the strip body pointing away from the entwined animal leg essentially over its entire circumference.

Optical components and methods of manufacture thereof. A first optical component has a hollow-core photonic crystal fiber includes internal capillaries for guiding radiation and an outer capillary sheathing the internal capillaries; and at least an output end section having a larger inner cross-sectional dimension over at least a portion of the output end section than an inner cross-sectional dimension of the outer capillary along a central portion of the hollow-core photonic crystal fiber prior to the output end section. A second optical component includes a hollow-core photonic crystal fiber and a sleeve arrangement.

A method of making a daylight redirecting window film having a layered structure with a total thickness of less than one millimeter and having at least two optical films bonded together. One of the optical films has a first light redirecting layer disposed on a first side of the film and including a linear array of light redirecting structures configured to reflect light using a total internal reflection and defining a parallel array of narrow channels, and a second light redirecting layers disposed on an opposite second side of the film and including light scattering surface microstructures. The method includes coating a surface of at least one of the films with an optical adhesive, positioning the optical films such that the top portions of the light redirecting structures face inwards, and bonding the films together to form a monolithic multi-layer light redirecting film structure.

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). hi general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles, hi some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector, hi certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinetlighting, garage lighting, wall wash, stack lighting, and downlighting.

The invention discloses a light source module which comprises a light-emitting element, a light guide pipe, a wave plate and a polaroid. The light-emitting element emits a light beam. The light pipe includes a concave curved surface, an output surface, a first convex surface, and a second convex surface. The concave curved surface faces the light emitting element. The output surface is opposite the concave curved surface. The first convex surface connects the concave curved surface with the output surface. A second convex surface connects the concave curved surface and the output surface and is opposite the first convex surface, where the light beam enters the light pipe through the concave curved surface and exits the light pipe through the output surface. The wave plate is disposed on a path of the light beam from the output surface. The polarizer is disposed on a path of the light beam from the wave plate.

An antiresonant hollow core optical fibre 30 has an outer jacket 12. Primary capillaries 14 are each bonded to a surface of a cavity within the outer jacket. At least two hollow cores 18a-b are forme

A light pipe assembly is provided which complies with the International Electrotechnical Commission (IEC) IP ratings for dirt and water ingress while reducing the amount of hardware typically required to mount each light pipe. The light pipe assembly includes a light pipe and an adapter. Each adapter includes a vertically extending center channel which receives and connects a light pipe's first end to an LED mounted upon a printed circuit board (PCB). Each light pipe is intended to project through the hole of an electronic device's panel. Furthermore, each light pipe's second end has flange and a press-fit region, preferably in the form of circumferential ribs, which forms a press-fit engagement with a panel.

The present invention relates to a laser waveguide component, a laser generating device and a laser ablation device, comprising a waveguide body and a reflective layer, wherein the waveguide body is a hollow structure, and the reflective layer covers the inner wall of the hollow structure; the waveguide body has a first end and a second end, the first end is used to receive laser pulses, and the second end is used to output laser pulses after being transmitted in the waveguide body; the inner diameter of the waveguide body is not less than the diameter of the input laser spot, and the cross-sectional area of ​​the waveguide body is funnel-shaped and gradually decreases from the first end to the second end. The first end with a larger cross-sectional area is conducive to collecting scattered light and avoiding energy waste, while the gradually decreasing second end is conducive to reducing the spot size, making the laser energy more concentrated and easier to couple with the rear-end optical transmission component; at the same time, the waveguide body with a hollow structure can provide a total reflection structure that excites multiple high-order modes, thereby achieving uniform light intensity in the cross-sectional area of ​​the light beam and reducing damage to the device.

Lighting device comprising a light source (1), an optical unit (20) designed to adjust the direction of the light from the light source (1), and a reflector (7), characterized in that the lighting device further comprises a light tube (5) and an exciter (6), the light tube (5) receives light (L1) with a first wavelength from the optical unit (20) and directs the light (L1) with the first wavelength onto the exciter (6), the exciter (6) converts the light (L1) with the first wavelength into light (L2) with a second wavelength and reflects the light (L2) with the second wavelength onto the reflector (7), wherein a circumferential wall of the light tube (5) is designed to reflect the light (L1) with the first wavelength and to transmit the light (L2) with the second wavelength.