45results about "Hollow light guides" patented technology

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 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.

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 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).

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.

The invention relates to a vacuum cleaner with a hand-held part (1), which has a light source (2) and a light guide (3), and at least one accessory (4, 4a) which is able to be coupled to the hand-held part (1) and has a further light guide (5, 5a), wherein the light guide (3) has a lens-shaped surface such that, during operation, it functions as a light output body when the hand-held part (1) and the at least one accessory (4, 4a) are uncoupled, and functions as a light coupling site for the further light guide (5, 5a) when the hand-held part (1) and the at least one accessory (4, 4a) are coupled.

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 waveguide for plastic welding has an entry end, an exit end as well as a first and a second inner face arranged between the entry end and the exit end, which are arranged opposite to each other and by means of which laser light can be reflected. A first distance between the entry end and the exit end defines a length of the waveguide and a second distance between the first and the second inner face defines a thickness of the waveguide. The exit end may be arranged opposite to the entry end and a central plane of the waveguide may extend centrally from the entry end to the exit end. The first inner face comprises a continuously curved, concave shape so that a third distance between the first inner face and the central plane varies continuously from the entry end in the direction of the exit end.

A system for landscape construction and light environment optimization under overpasses, belonging to the field of landscape construction technology, addresses the problem of poor lighting conditions under overpasses, which is detrimental to plant growth. The system includes light guiding devices, planting beds under the bridge containing a first type of plant, and climbing nylon netting covering the bridge pillars. Several clamps secure the netting to the pillars, and a second type of plant climbs on the netting. A metal mesh frame is installed between the tops of adjacent pillars, with several planting pots containing a third type of plant. Two light guiding devices form a group, with each group's two sunlight-introducing ends positioned on opposite sides of the overpass's width. The sunlight-exiting ends of the light guiding devices face the second and third plants, respectively. Several groups of light guiding devices are arranged at intervals along the length of the overpass. Greening under the bridge helps relieve stress, restore energy, and improve people's mood and health.

A control stick including a stick assembly including: an outer tube-like opaque wall; an annular light guide structure disposed inside the outer tube-like opaque wall in a concentric manner wherein an annular end surface of the annular light guide structure is flushed with a first end of the outer tube-like opaque wall; and an elongated central axial member fitted inside the annular light guide structure and held by the annular light guide structure. A first axial end of the elongated central axial member is directed in a same first direction as the first end of the outer tube-like opaque wall. A second axial end of the elongated central axial member includes a control-engagement-element for engaging with a control stick mechanism. The control stick further including at least one light source disposed to transmit light to the annular light guide structure which is directed to the annular end surface thereof.

To provide a waveguide that is optimized for manufacturing process and cost.SOLUTION: A curved, open-sided plastic welding waveguide (20), in particular a laser transmission welding waveguide, comprises a first reflective element having a reflective surface (26) that is used to enable reflection of laser light. The reflective surface (26) defines a light receiving end (22) capable of receiving laser light from a laser source, particularly one or more light guide paths (10), and a light exiting end (24) at which the laser light can be directed into a workpiece (15) that is transparent to the laser light. The reflective surface (26) of the first reflective element is defined by a curvature between the light receiving end (22) and the light exiting end (24) such that the reflective surface (26) has a continuously curved concave shape when viewed in cross section. Furthermore, the first reflective element is not opposed by a second reflective element such that the waveguide (20) is open in a direction perpendicular to the reflective surface (26).SELECTED DRAWING: Figure 1

Provided is a metal jointed body, joined by solid-phase joining in the atmosphere, in which no protrusion of molten joining material occurs, that improves dimensional stability. A metal jointed body is formed by (A) making Ag films of two metal laminated bodies opposed to each other, the metal jointed body being configured by sequentially laminating a Zn film and an Ag film on an Al substrate serving as a member to be joined, and (B) bringing the Ag films into contact with each other, then (C) heating is performed while pressurizing, and closely adhering and solid-phase joining the Ag films to each other. The completed metal jointed body is a portion where Al—Ag alloy layers are provided on both sides of an Ag—Zn—Al alloy layer to join the Al substrates to each other.

To solve the problem of no existence of an indoor interactive virtual world seen within a "holodeck".SOLUTION: A method determines four dimensional (4D) plenoptic coordinates for content data by: receiving content data; determining locations of data points with respect to creating a digital volumetric representation of the content data, a first surface being a reference surface; determining 4D plenoptic coordinates of the data points at a second surface by tracing location data points in the volumetric representation to the second surface where a 4D function is applied; and determining energy source location values for 4D plenoptic coordinates that have a first point of convergence.SELECTED DRAWING: Figure 12

An optical hollow waveguide component (25), in particular for the homogenization of EUV light, comprises two support elements (26) and two insertion elements (28), in particular two plate-shaped insertion elements. The insertion elements (28) are inserted between the support elements (26) in such a way that a hollow waveguide (11) is formed between the insertion elements (28). The hollow waveguide component (25) is suitable in particular for use in an illumination optics unit for a mask inspection system (1) for use with EUV illumination light. An optical system having such an illumination optics unit and a mask inspection system having the optical system are also described.

The invention provides a dual-channel high-power femtosecond laser deciduous tooth selective ablation system, and relates to the field of solid ultrafast laser. Comprising a laser transmitter, a power output unit and an optical fiber clamp, the power output unit comprises a primary output module and a secondary output module, and the primary output module and the secondary output module are respectively connected with the optical fiber clamp. Through the dual-wavelength laser output system, 1 [mu] m near-infrared femtosecond laser and 6.1 [mu] m and 9.5 [mu] m intermediate-infrared tunable femtosecond laser can be output at the same time, meanwhile, a groove is further formed in the optical fiber clamp, reagents such as a decayed tooth display agent can be stored, the needed reagents can be directly and synchronously injected to a target part, and more convenient and accurate ablation experience is achieved.

A light emitting device (1) comprising at least one light source (2) adapted for, in operation, emitting light source light, a cavity (3) being diffusely reflective and comprising a light exit plane (6), the at least one light source (2) being arranged in the cavity (3), and at least two lamellae (41, 42) arranged extending from a position level with the light exit plane (6) and away from the cavity (3), the at least two lamellae (41, 42) being spaced apart by a spacing (9), wherein each of the at least two lamellae (41, 42) comprises a first major surface (411, 421) being specular reflective and extending in a direction being parallel with a center axis (A) of a main issue direction of light emitted by the light emitting device (1) and facing the spacing (9), and wherein at least one of the at least two lamellae (41, 42) comprises a first plurality of prismatic elements (51, 52) arranged on the first major surface (411, 421) such that at the first major surface (411, 421) light is reflected by the first plurality of prismatic elements.

A vacuum cleaner with a hand-held part, which has a light source and a light guide, and at least one accessory which is able to be coupled to the hand-held part and has a further light guide. The light guide has a lens-shaped surface such that, during operation, it functions as a light output body when the hand-held part and the at least one accessory are uncoupled, and functions as a light coupling site for the further light guide when the hand-held part and the at least one accessory are coupled.

A backlight for an image forming device includes spaced apart front and rear optical reflectors defining an optical cavity therebetween, at least one light source for emitting light into the optical cavity, and a thermal management layer. The front optical reflector is disposed between the image forming device and the rear optical reflector, substantially transmits light in a first wavelength range toward the image forming device, and substantially reflects light in a second wavelength range toward the rear optical reflector. The rear optical reflector substantially reflects light in the first wavelength range toward the front optical reflector, and substantially transmits light in the second wavelength range. The thermal management layer absorbs at least a portion of light in a third wavelength range. The light in the third wavelength range is emitted by an electronic circuit disposed adjacent to the backlight.