Solutions to Achieve High Luminance in LED Lighting Systems

Tunable white light LED device that provides high-quality light with adjustable color temperature and enhanced color rendering for applications like circadian lighting. It uses a combination of three LED strings (blue LEDs with phosphor coatings), each with a different color phosphor, to generate unsaturated light of different colors. These unsaturated light spectra are mixed to create a tunable white light that can be adjusted along the black body locus of correlated color temperatures. The device uses a drive circuit to adjust the relative currents to the LED strings and achieve the desired color point.

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An LED lamp design that allows high-power LEDs to be used without requiring external heat sinks. This is achieved by using a cylindrical transparent housing with the LEDs mounted on a flexible PCB rolled up inside. The PCB is coated with a thin transparent layer to protect the LEDs. The rolled PCB, LEDs, and driver components are all contained within the housing. This allows the LEDs to dissipate heat directly into the surrounding air through the transparent housing.

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Rearview mirror assembly with an integrated blind spot warning indicator. The mirror includes an optical assembly with a housing and lighting module that emits light through an inclined bottom surface. The housing has inner surfaces that increase and then decrease in height towards the light source. This shapes the emitted light beam. The inclined assembly also provides high luminance light to the driver and lower luminance light to vehicles behind.

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LED filament bulb with omnidirectional light emission and high efficiency. The bulb uses a flexible LED filament shaped to emit uniform light in all directions. The filament has multiple flat segments connected by bendable sections. This allows the filament to be shaped in a non-linear configuration compared to traditional straight filaments. The shaped filament emits light uniformly in 360 degrees. The bendable segments prevent disconnection when the filament is flexed.

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White LED lighting that closely mimics natural sunlight and has improved color rendering compared to traditional LEDs. The device uses broad-spectrum blue LEDs as the excitation source along with optimized green-yellow and red phosphors. The broad blue excitation fills in the cyan trough between blue and green phosphors, boosting color rendering. The result is full-spectrum white light that appears more natural, has higher CRI, and reduces eye damage from excessive blue light exposure.

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Lighting apparatus with improved luminance using LEDs and reflectors, without increasing thickness or light sources. A reflective unit with a spaced area under each LED increases reflectivity and luminance. The spaced area can be defined by an optical pattern layer to replace a light guide plate.

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A display module having improved luminance and heat emission performance for display screens that use micro-LEDs. The module includes micro-LEDs on a substrate with a reflective layer surrounding the micro-LEDs' sides and a light-blocking layer on top. The reflective layer helps direct light forward and prevents side emissions, boosting efficiency. The light-blocking layer prevents light leakage.

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Lighting apparatus with high intensity, small volume package, and high-efficiency LEDs. The apparatus includes a board with multiple small LEDs mounted on it and an enclosure that houses the LEDs. The enclosure has a volume of less than 5000 mm3 and protects the LEDs while maintaining high light output.

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A hybrid lighting and communication system that uses an orange nanowire LED combined with a blue laser diode for high-speed communication. This allows tunable white lighting with high color rendering and also optical wireless data transmission. The orange nanowire LED emits broad-spectrum white light with good color rendering. The blue laser provides high-speed communication capability. The combined LED/laser system enables both illumination and data transmission using visible light.

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Light emitting device packages and lighting device designs that aim to improve the light intensity of LED devices. The design includes using insulating reflective layers on the electrodes of the LED device to reduce light absorption and improve light output. The insulating layers are applied to selected areas of the electrodes to expose contact points while reflecting light.

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A light-emitting device that provides a large circular light-emitting region with increased brightness in the center by using a central LED unit surrounded by smaller peripheral LED units. The central unit has a larger light-emitting region area compared to the periphery units. This configuration increases the overall light-emitting region size while concentrating more light at the center. It avoids yield issues of making a single large LED and prevents overheating a large substrate.

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A white light device architecture based on an orange nanowires LED combined with a narrow linewidth blue laser diode for simultaneous illumination and optical wireless communication. The orange nanowires LED provides tunable white light with high color rendering. The blue laser diode enables high-speed data transmission. This hybrid LED/laser system offers improved efficiency, color quality, and data rates compared to conventional phosphor-based white LEDs. The orange nanowires LED has a broad linewidth that fills the spectrum for better color rendering.

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High power density solid-state lighting modules that can produce focused, intense light output for applications like curing polymers, sterilization, cleaning, and material ablation. The lighting module uses dense arrays of solid-state light-emitting diodes (LEDs) on a thermally conductive substrate. The LEDs can be driven at high power to achieve the required power densities. The module allows solid-state lighting to replace high-intensity arc lamps for applications requiring high power density irradiation.

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LED package for motor vehicle lamps that has improved brightness and luminous flux performance compared to conventional packages. The package contains a LED, an optical element, a cover, and optical reference marks. The marks on the optical element and cover are aligned to a reference mark on the substrate or heat sink during assembly. This precise alignment improves the optical performance of the LED package. The marks can be detected and aligned using an optical system during manufacturing.

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An illumination method that creates natural, vivid, highly visible and comfortable color appearances by optimizing the light spectrum for objects. The method involves illuminating objects with light that, when measured at the object position, matches specific criteria for hue, saturation and color temperature compared to a reference light. This recreates natural color appearances indoors under typical lighting conditions. The illumination is achieved using light emitting devices such as LEDs with specific spectra. The method aims to provide favorable color appearances under moderate indoor lighting conditions while maintaining energy efficiency.

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LED light emitting device that combines multiple LED sources into a compact high quality light source. The device uses a single light guide element adjacent to the LED output surfaces to efficiently collect the emitted light and guide it to an output surface. A transparent collimating element captures the guided light and reflects any escaping light back into the guide.

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A white light device architecture suitable for illumination and optical wireless communications. The architecture uses an orange nanowires LED combined with a blue laser diode. This achieves both high quality white light generation and high speed optical communications in a single device. The orange nanowires LED provides tunable color rendering with a high CRI, while the blue laser enables optical wireless data transmission.

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A small form factor LED lighting apparatus with high intensity. The lighting apparatus has a volume less than 5000 mm3 and a light intensity greater than 150 lumens. The compact size makes it suitable for applications where space is limited. The apparatus achieves high brightness from multiple LEDs enclosed in a small package.

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Modular LED light fixture system with arc-shaped array to achieve high intensity illumination and full spectrum for horticulture and other applications. The system uses LED modules arranged along a curved housing that focuses their light output into a concentrated illuminated area. The modules can be adjusted to converge their light patterns. The fixture allows customization of LED colors and lenses.

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A light emitting module with groups of differently colored LEDs arranged in a specific pattern on a circuit board to improve color rendition, color control, and heat distribution. Groups of red LEDs are positioned on the outer circumference, followed by groups of green LEDs, and then groups of blue LEDs in the center. The red LEDs are connected in series, followed by the green and blue LEDs. The number of each type of LED increases as the wavelength decreases. The circuit board has wider traces for the red LED connections.

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