3029results about "Light guides for lighting systems" patented technology

The present invention relates to an aperture unit having an optical axis. The aperture unit includes a fixed portion, a guiding element, a first blade and a driving assembly. The guiding element is movably connected to the fixed portion, and the first blade is movably connected to the guiding element and the fixed portion. The driving assembly is disposed on the guiding element for driving the guiding element to move relative to the fixed portion in a first moving dimension. When the guiding element moves relative to the fixed portion in the first moving dimension, the first blade is driven by the guiding element to move relative to the fixed portion in a second moving dimension, and the first moving dimension and the second moving dimension are different.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

A lighting keyboard is provided with at least one keyswitch, a support plate and a backlight module. The keyswitch has a keycap and a switch under the keycap. The support plate connects beneath the keycap by a support mechanism. The backlight module has a lighting board configured underneath the support plate and corresponding to the keycap. The lighting board includes a board, a first reflective layer and a circuit layer. The circuit layer is disposed on the board and includes a concave-convex structure and circuit traces. The circuit traces electrically connects with a light emitting unit. The first reflective layer covers the concave-convex structure to form microstructure regions.

An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and including a protrusion formed on the first surface, a guiding element movably connected to the fixed portion and including a through hole, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly use for driving the guiding element to move for moving the first blade. The optical axis passes through the through hole. The first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

A backlight module for a lighting keyboard having a specific function key comprises a lighting board, a light guide panel and a shielding sheet. The shielding sheet, the light guide panel and the lighting board are stacked from top to bottom. The lighting board has first and second light emitting units. The light guide panel has first and second light guide holes. The first light emitting unit is in the first light guide hole. The second light emitting unit is in the second light guide hole. The shielding sheet has a blocking portion. The blocking portion overlaps in projection with the first light emitting unit and the second light emitting unit. The light guide panel has a light guide panel slot. The light guide panel slot overlaps in projection with the blocking portion and a boundary of a keycap projection area of the specific function key.

A transmission coating for a waveguide is formed with multiple layers. There are steps of a) determining a first coating parameter and a coating function for each layer -3000, b) forming the multiple

An LED filament lamp emits lamp light of a third correlated color temperature, CCT3. An LED filament light source emits LED filament light of a first correlated color temperature, CCT1, of a first light intensity, I1, and a first luminous flux, LF1. A transparent envelope at least partly encloses the LED filament light source. A further LED light source provides further LED light of a second correlated color temperature, CCT2, a second light intensity, I2, and a second luminous flux, LF2. The further LED light source provides the further LED light to the envelope. The envelope is a light emitting structure configured to emit the further LED light and to transmit the LED filament light. The lamp light thus comprises one or more of the LED filament light and the further LED light and CCT1≤2500K, 8000K≥CCT2≥3500K and 2≥LF1 / LF2≥0.5, wherein CCT1, CCT2 and LF1 / LF2 are chosen such that 3400K≥CCT3≥2600K.

An electronic device may include a display with a waveguide and a surface relief grating (SRG) on the waveguide. The SRG may direct image light towards an eye box. An optical blocker may at least partially overlap the SRG. The blocker may include a first optical wedge having a curved surface and a second optical wedge separated from the curved surface by an air gap or a low refractive index material. The curved surface may have a freeform shape that configures the first optical wedge to propagate world light incident upon the blocker within a selected range of incident angles away from the SRG via total internal reflection. The blocker may transmit world light at other incident angles to the eye box through the waveguide. This may allow the blocker to block high incident angle world light from reaching the SRG and producing unsightly rainbow artifacts at the eye box.

The invention relates to the technical field of lighting lamps, in particular to a rhythm sky lamp. The rhythm sky lamp comprises a shell body, a blue sky module, a lighting module and a control module. A first cavity and a second cavity which are independent from each other are formed in the shell body, and the blue sky module is arranged in the first cavity; the blue sky module comprises a mixed light source and a scattering light guide plate, the mixed light source faces the side face of the scattering light guide plate, the light-emitting face of the scattering light guide plate faces the first cavity, and the mixed light source is suitable for irradiating light of different colors to the scattering light guide plate. The lighting module is rotationally arranged in the second cavity, and the light path of the lighting module deviates from the first cavity. The control module is connected with the blue sky module and the illumination module. By adopting the method, the sky effects of multiple time periods can be presented according to the rhythm time efficiency, and the diversity and authenticity of the sky effect simulated by the rhythm sky lamp are improved.

An illuminated indicator for a doorbell can be arranged to receive light along an optical axis (e.g., that is perpendicular to a front face of the doorbell housing) and emit the light from an output portion that defines a closed loop (e.g., that extends around the optical axis) and in a direction that is parallel to the optical axis. The illuminated indicator can include a light pipe that receives light along the optical axis and reflects the light to follow a radially outward and divergent path, e.g., that is perpendicular to the optical axis. The radially outward and divergent light can be reflected to follow a path that is parallel to the optical axis for emission at an output portion of the light pipe. The light pipe can be configured to transmit a doorbell switch activation force to other parts of the doorbell to cause actuation of the switch.

A headphone that can replace multiple components without the need for professional tools includes two headphone bodies, which are connected together through headbands. A sheath is provided on the inner side of the headband facing the headphone body, and the end of the sheath is detachably connected to the headband. The bottom of one headphone body is connected with a power cord and a microphone, and the magnetic suction on the back side of the two headphone bodies is equipped with a decorative cover, The opposite side of the two headphone bodies is buttoned and equipped with earmuff.

A light-emitting module includes a light-blocking sheet and a light guide sheet that are arranged on a circuit board. The circuit board includes a light-emitting element. The light-blocking sheet has a hollow portion and a light-blocking portion. The light guide sheet is arranged in the hollow portion, and has a light incident portion and a light guide portion, where the light incident portion includes a first side surface, a second side surface, and a third side surface, the first side surface is adjacent to the light-emitting element, the second side surface and the third side surface are separately connected to the first side surface, the angle formed between the second side surface and third side surface, the angle is smaller than a light-emitting angle of the first light-emitting element, and the light-blocking portion is arranged adjacent to the second side surface or the third side surface.

A surface light source module includes a light guide plate, a light source component, a covering layer, and an optical adhesive layer. The light guide plate has a first surface, a second surface, and a light incident surface. The first surface has multiple microstructures. The optical adhesive layer is disposed between the light guide plate and the covering layer. Each microstructure has a symmetry plane and a first structural surface. The interface between the first structural surface and the symmetry plane has a first intersection line. The first intersection line includes a first-part line segment, a second-part line segment, and a third-part line segment. A third included angle between the third-part line segment and the first surface is 50-90 degrees. A third length of the third-part line segment is greater than or equal to 5% of the total length of the first intersection line.

A system includes a housing including a front panel, a rear panel, an upper panel, and a lower panel. The system includes a first circuit board or substrate, at least one data processor coupled to the first circuit board or substrate and configured to process data, and at least one optical module coupled to the first circuit board or substrate. Each optical module is configured to perform at least one of (i) convert input optical signals to electrical signals that are provided to the at least one data processor, or (ii) convert electrical signals received from the at least one data processor to output optical signals. The system includes at least one inlet fan mounted near the front panel and configured to increase an air flow across a surface of at least one of (i) the at least one data processor, (ii) a heat dissipating device thermally coupled to the at least one data processor, (iii) the at least one optical module, or (iv) a heat dissipating device thermally coupled to the at least one optical module. The system includes at least one laser module configured to provide optical power to the at least one optical module.

A smart mobility vehicle includes a windshield including an electrochromic film having adjustable transparency based on power applied thereto, and a projector configured to project vehicle driving information onto the windshield, wherein the windshield comprises an internal display area and an external display area, the internal display area being configured to display an image toward an inside of the vehicle, the external display area being configured to display an image toward an outside of the vehicle.

The lighting device disclosed at an embodiment of the invention includes a substrate; a first reflective layer disposed on the substrate and having a plurality of reflection patterns; a light source disposed on the substrate; a resin layer disposed on the first reflective layer, and a second reflective layer disposed on the resin layer and having a plurality of holes, wherein an arrangement form of the plurality of holes is the same as that of the plurality of reflection patterns.

A light source module including a light guide plate, a first light source and a plurality of optical microstructures is provided. The light guide plate has a first light incident surface, a first side surface and a first surface. The first light incident surface and the first side surface connect the first surface. The first surface has a first area and a second area. The second area is located between the first area and one of the first light incident surface and the first side surface. A first light source is disposed on one side of the first light incident surface of the light guide plate. A plurality of optical microstructures are disposed on the first surface. A distribution density of the plurality of optical microstructures in the first area is less than a distribution density of the plurality of optical microstructures in the second area.

An integrated illuminated fan includes a conjoined base, a conjoined fan frame, fans and a lighting structure. The conjoined base is disposed with bearing portions which are arranged at intervals. The conjoined fan frame is connected with the conjoined base and disposed with vane wheel chambers. The vane wheel chamber is arranged correspondingly to the bearing portion. The fan includes a stator assembly and a vane wheel. The stator assembly is separately disposed on the bearing portion. The vane wheel is separately accommodated in the vane wheel chamber and connected correspondingly to the stator assembly. The lighting structure is disposed in the conjoined base and electrically connected to the stator assembly. Thereby, it has a simple structure and can be assembled easily and improve the overall cooling performance.

The utility model provides a lamp effect display structure and an atomization device thereof, the lamp effect display structure is applied to the atomization device, the lamp effect display structure comprises a panel assembly, the panel assembly is provided with a light guide groove and a light hole, the light guide groove is formed in the surface of the panel assembly, the light guide groove is provided with a reflection area, and the light emitting position of the light hole faces the reflection area; the light-emitting component is arranged on one side, opposite to the surface of the panel component, of the panel component and is opposite to the light-transmitting hole; light emitted by the light-emitting assembly is projected to the reflection area through the light-transmitting hole, and the reflection area can reflect the light emitted by the light-emitting assembly to the surface of the panel assembly. According to the panel assembly, the light guide groove is formed in the panel assembly, the light emitted by the light transmitting hole is reflected through the reflection area formed by the light guide groove, then the direct light emitting mode is avoided, the discomfort brought to a user by light emitting of the light transmitting hole is reduced, and the use comfort degree is improved.

A transparent wearable data display having a source of collimated light, a deflector for deflecting the collimated light into a scanned beam, and a first of switchable grating elements sandwiched between first and second parallel transparent substrates, which together functioning as a first light guide. A first coupling is provided for directing the scanned beam into a first total internal reflection (TIR) light path of the first light guide along the first array column. The grating elements having diffracting and non-diffracting states, in their diffracting state deflecting light out of said light guide. The grating elements are switchable into their diffracting states one group of elements at a time.

The invention relates to a lighting device for a motor vehicle, comprising a light-transmissive light guide (2) with a front side (201) facing a side of the lighting device (1), via which light is emitted from the lighting device (1), and a rear side (202) opposite the front side (201) and comprising a structured surface with a macrostructuring (MS). The lighting device further contains a light source (4) for generating light that is fed into the light guide (2), wherein the light guide (2) is configured such that the fed-in light propagates in the light guide (2) along the front side (201) and the rear side (202) and partially exits the light guide (2) via the front side (201) and the rear side (202).The lighting device according to the invention is characterized in that a reflector (3) extends along the rear side (202) of the light guide (2), said reflector having a front surface (301) facing the rear side (202) of the light guide (2) and reflecting light emerging from the rear side (201) of the light guide (2) back to the rear side (2) of the light guide.

A sensing system includes a sensor with transmitters and detectors. A light source is optically coupled to a light guide disposed in the field of view of the sensor. The light guide is generally planar and the light source illuminates the light guide from an edge, or side, to illuminate the length of the light guide. A housing for the sensing system has a surface configured to reflect or diffract light from the light source towards the surrounding environment.

Provided are a backlight module and a display device. The backlight module includes a fixing member and a sealing member. The fixing member includes a side portion, and the side portion includes an opening. At least part of the sealing member is connected between a display panel and the side portion. The sealing member includes a mounting groove, the mounting groove includes a groove wall and a projection on the groove wall, and the projection is disposed in the opening.

To provide an assembly capable of stabilizing a position of a second component relative to a first component even if a temperature environment is changed.SOLUTION: An assembly includes a first component 10, and a second component 20 formed from a material different from that of the first component 10. The first component 10 includes a projection section 131a, and an opposing section 132a that opposes the projection section 131a with a gap in a predetermined direction. The second component 20 includes an inserted section 21a into which the projection section 131a is inserted. The inserted section 21a includes an interposition section 22a positioned between the projection section 131a and the opposing section 132a. The interposition section 22a can abut on one of the projection section 131a and the opposing section 132a in a predetermined direction according to a temperature environment.SELECTED DRAWING: Figure 2

To provide an optical fiber light source having high spectral wavelength flexibility and enabling incoherent continuous-wave output in a single transverse mode.SOLUTION: An optical fiber light source has: an optical fiber having a first end, a second end, and a tapered part positioned between the first and second ends, which is a single mode fiber; a wavelength conversion part; a light source for exciting the wavelength conversion part; and a support part. The first end outputs radiant light emitted from the excited wavelength conversion part. The tapered part includes: a constricted part; a first tapered region in which a diameter gradually decreases from the second end side toward the constricted part; and a second tapered region in which a diameter gradually increases from the constricted part toward the first end side. The constricted part has a diameter smaller than those of the first and second ends, and has a size of the wavelength or less of the radiant light. The wavelength conversion part is composed of liquid or gas and is disposed so as to surround at least an outer periphery of the constricted part of the tapered part. The light source simultaneously excites the outer peripheral portion surrounding the wavelength conversion part.SELECTED DRAWING: Figure 2

Direct-bonded lamination for improved image clarity in optical devices is provided. An example process planarizes and plasma-activates optical surfaces to be laminated together, then forms direct bonds between the two surfaces without an adhesive or adhesive layer. This process provides improved optics with higher image brightness, less light scattering, better resolution, and higher image fidelity. The direct bonds also provide a refractory interface tolerant of much higher temperatures than conventional optical adhesives. The example process can be used to produce many types of improved optical components, such as improved laminated lenses, mirrors, beam splitters, collimators, prism systems, optical conduits, and mirrored waveguides for smartglasses and head-up displays (HUDs), which provide better image quality and elimination of the dark visual lines that are apparent to a human viewer when conventional adhesives are used in conventional lamination.

The utility model relates to a light-transmitting guide pipe structure of a light-transmitting concrete outer wall, which is used for being matched with construction of a non-contact double-layer outer wall and forming a light guide channel penetrating through the double-layer outer wall at the same time after the construction is completed. The light-transmitting guide pipe structure comprises a first sleeve, a second sleeve and a transparent light guide rod; one end of the first sleeve is connected to one end of the second sleeve in a sleeved mode, and a pipe cavity with the inner diameter decreasing from the first sleeve to the second sleeve is formed in the pipe. The length and the shape of the transparent light guide rod correspond to those of the tube cavity; the first sleeve and the second sleeve are sequentially matched with the double-layer wall body for construction and connection, while sequential construction of the double-layer wall body is not affected, a lateral light shielding channel is formed after the double-layer wall body is used, and then a light guide channel penetrating through the double-layer wall body at the same time is formed after the transparent light guide bar is inserted into the double-layer wall body; the limitation that a conventional light-transmitting rod can only be applied to a single-layer concrete wall is eliminated, and the application scene of the light-transmitting concrete wall is expanded.

Waveguide modification includes modifying waveguide combiners, output coupler, and pupil expander regions, which contain diffraction gratings, based on user and display characteristics during manufacturing. The diffraction grating is generally configured to combine received display light, representing an image for display, and directs the combined light to a location where the image can be comfortably viewed by the user. Because the desired location for the display can vary based on characteristics of the user, the diffraction grating is modified during manufacturing, such as by covering portions of the grating, to tailor the characteristics of the diffraction grating for a particular user or group of users.

The utility model relates to an explosion-proof lighting device which comprises a light source machine and a light guide fiber, the light source machine comprises a light source assembly and a driving power supply, the driving power supply is connected with the light source assembly through an electric wire, the light source assembly comprises a coupling connector and a radiator, the coupling connector is fixed at the front end of the radiator, and the light guide fiber is fixed at the front end of the radiator. A parallel light lamp bead is arranged at the joint of the coupling connector and the radiator, and the light guide fiber is inserted into an optical fiber interface of the coupling connector. Through mutual cooperation of the coupling connector and the radiator, parallel light emitted by the light source machine can cope with long-distance transmission scenes, the attenuation degree is low, and the light source machine is suitable for illumination of various limited spaces.