101results 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.

An illumination system comprising a lighting module with a plurality of LEDs, a flexible optically transmissive sheet disposed in an energy-receiving relationship with the lighting module, and broad-area reflective surface configured to reflectively scatter light. The flexible optically transmissive sheet has a laminated structure with a generally rectangular shape and a thickness between 200 micrometers and 1 millimeter. The laminated structure comprises a first layer of an optically transmissive material, a second layer of an optically transmissive material, a first regular array of linear channels formed in the first layer extending parallel to one another between two edges of the flexible optically transmissive sheet, and a second regular array of linear channels formed in the second layer extending at an angle with respect to the first regular array of linear channels. The linear channels define side walls configured to reflect light using total internal reflection.

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.

In one aspect, an optical system is disclosed, which includes a light guide having an input end for receiving light from at least one light source and an output end through which light exits the light guide, said light guide further having at least one highly reflective surface positioned to provide specular reflection of at least a portion of the light entering via the input end of the light guide, where the highly reflective surface exhibits a specular reflectance of at least about 95% for light with one or more wavelengths in a wavelength range of about 380 nm to about 780 nm.

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.

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.

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.

To provide a backlight for providing illumination to an image forming device.SOLUTION: A backlight 100 includes: a front optical reflector 20 and a back optical reflector 10, which are spaced and define an optical cavity 18; and a light source 15 for emitting light into the optical cavity. The front optical reflector 20 is disposed between the image forming device and the back optical reflector 10. For normally incident light and for non-overlapping first visible light and second infrared wavelength ranges, the front optical reflector 20 transmits 80c 70% of light 80a for each wavelength in the first wavelength range, and reflects 90b 70% of light 90a for each wavelength in the second wavelength range. The back optical reflector 10 reflects 80b 70% of light for each wavelength in the first wavelength range, and transmits 90c 70% of light 90b for each wavelength in the second wavelength range. The light 80a, 90a from the light source 15 has a wavelength in the first wavelength range and a wavelength in the second wavelength range.SELECTED DRAWING: Figure 1

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.

This invention provides a system and method for sterilizing an ISO 594 female Luer fitting and an attached catheter using UV light. An optical plug can be inserted into a female Luer fitting, and UV-C light or a combination of UV-C and UV-A light can be radiated through the optical plug and into the female Luer fitting and attached catheter, thereby sterilizing the fitting and catheter. A sterilizer device can be used to hold the female Luer fitting and catheter, with an optical plug inserted into the female Luer fitting. The sterilizer device can include a UV light source that radiates UV light through the optical plug and into the female Luer fitting and attached catheter. A protective cover can be placed over the optical plug before inserting the optical plug into the female Luer fitting. The protective cover can be disposable.

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.

Disclosed embodiments include an energy directing device having one or more energy relay elements configured to direct energy from one or more energy locations through the device. In an embodiment, surfaces of the one or more energy relay elements may form a singular seamless energy surface where a separation between adjacent energy relay element surfaces is less than a minimum perceptible contour. In disclosed embodiments, energy is produced at energy locations having an active energy surface and a mechanical envelope. In an embodiment, the energy directing device is configured to relay energy from the energy locations through the singular seamless energy surface while minimizing separation between energy locations due to their mechanical envelope. In embodiments, the energy relay elements may comprise energy relays utilizing transverse Anderson localization phenomena.

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.

A light guide device and a method of manufacturing a light guide device is disclosed. The light device comprises a first film and a second film. The light guide device further comprises a frame config

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.