LED Lighting

“Car headlights should be better regulated to reduce the dazzle they cause on-coming drivers”, according to a report produced by Scottish charity Lightaware. Called ‘Modern vehicle headlights dazzle drivers and may compromise road safety’, it highlights the extra-sharp sharp angular transition between the brightest part and the dim ‘cut-off’ of dipped headlight beams made possible by technologies such as LED ...

Rohm has developed a 120W 905nm infra-red laser diode for lidar. Called RLD90QZW8, “original technology allows Rohm to reduce the temperature dependence of the laser wavelength to just Δ11.6nm – 0.10nm/°C”, said the company. “This makes it possible to narrow the bandpass filter while extending the detection range.” 120W is at 38A where the diode drops 13V (50ns pulses, 0.05% ...

LEDlenser has created a range of LED work torches for peering into electrical cabinets, amongst other applications. “Depending on the job at hand, professionals expect different things from their work lights: selectable colour temperature and higher colour rendering indices help electrical contractors test cables, the automotive mechatronics sector needs lamps with plane heads to light up hard-to-reach places,” according to ...

MicroLED’s commercialisation has faced delays, and significant production volumes are not expected for 2-3 years with broader adoption in 5-10 years, says Yole Developpement. As OLED technology advances, the urgency for microLED to deliver clear performance, functionality, and cost advantages has grown. Ecosystem competition is influencing microLED development in regions like China, Taiwan, and South Korea. Microdriver-based architectures could disrupt ...

Littelfuse has introduced an optically isolated photovoltaic gate driver for mosfets and IGBTs. Essentially, photovoltaic gate drivers are opto-isolated relays without the internal output mosfets, allowing mosfets to be picked appropriate to the load. They are not fast, but they allow a microcontroller to switch a large load on and off across a huge potential difference. This one is called ...

Osram is aiming at projectors based on DLP technology with a set of four high-brightness coloured LEDs. With the base part number LE xx P1MS/AS (see table below for details), there are blue, amber, deep blue and green options. Each has a 6.8 x 7.6mm footprint. “The LEDs have a very close etendue match with the 0.33inch DLP imager,” according ...

Panasonic has created a pair of miniature opto-mosfet relays that can handle well over an amp and need little diode current. Both have back-to-back output mosfets, so they can switch ac or dc power, and both come in 4.3 x 6.8 (including leads) x 2.2mm high (SOP4) gull-wing packaging. Days later, it revealed something similar rated at 600V AQY212G3HS can ...

For Nvidia Jetson Orin system-on-modules, E-con Systems has created a rugged waterproof camera aimed at autonomous mobility applications such as delivery robots and agriculture vehicles. SturdeCam31 is a 3Mpixel camera built around Sony’s ISX031 sensor. “Leveraging Sony’s sub-pixel HDR technology, SturdeCam31 has been tuned to provide HDR performance up to 120dB and LFM [LED flicker mitigation], thereby providing a solution ...

Texas Instruments has added an analogue version of the non-optical replacement for digital opto-isolators it just revealed. Called ‘opto-emulators’, both analogue and digital versions replace the LED and photo-diode or photo-transistor within a conventional opto-isolator with an SiO2 barrier across which the a modulated version of the input signal is passed – probably magnetically (Electronics Weekly has requested clarification). The ...

Cree LED has added higher efficiency high colour rendering index versions to its XHP35.2 leds, and introduced leds optimised to dim evenly when used in parallel The company has used its latest phosphor fill technology between the led die for improved optical performance. Optimised for indoor directional lighting, “Pro9 versions of the XHP35.2 HD and HI leds have up to ...