LED Lighting

ROHM has created a range of five different coloured 0603 (1608 metric 1.6 x 0.8mm) LEDs, the CSL1901 series, optimised for 2mA operation. “In recent years, technological advancements have resulted in dramatically improved luminous efficiency”, according to the company. “At the same time, the market is demanding LEDs tailored to characteristics in the low current range.” It argues that LED ...

High-quality OLED, LCD, TFT and VFD displays. The range of optoelectronic components available in the TME catalogue has just been expanded to include products by Newhaven Display. This is an American supplier specialising in universal displays manufactured in compliance with various standards, with a wide range of technologies applied and versions available. These solutions are now available directly from our ...

Melexis has launched an IC with 21 LED drivers that can power and dim up to 3,000 LEDs. Called MLX81143, it implements CAN-over-UART to control individual LEDs, and the company claims it provides real-time compensation of colour drift caused by environmental changes, and colour-mixing accuracy of less than 1%. The product flyer promises “real-time update of >800 RGB LEDs without ...

Micledi Microdisplays, a spin-put of Belgian semiconductor lab Imec, has revealed a year-long collaboration with augmented reality glasses maker Kura Technologies. AR glasses need far brighter displays than VR goggles, and displays made from arrays of miniaturised conventional III-V LEDs are a contender for this application. Multiple partnerships are racing towards this goal. In this case, it will result in ...

STMicroelectronics has used the ‘CAN FD Light’ protocol in a 32-channel automotive lighting controller. “With 32 regulated current sources, independently programmable from 1mA to 15mA, L99LDLH32 can drive individual pixels in external and interior lighting applications. Global dimming is also provided, with 8-bit resolution,” according to the company, whose data sheet said that it is particularly aimed at external rear ...

Aiming at so-called circadian lighting, Nichia has introduced an ‘azure’ coloured LED for people to wake up to. “What has been lacking in conventional indoor lighting is 480nm light, which is abundant in the morning sun,” according to the company. “This 480nm light stimulates the secretion of serotonin and activates the human body and mind. The more serotonin secreted in ...

Gaggione has produced a family of 45mm collimators for cob (chip-on-board) leds. VEGA45V produces a 50° beam Called Vega, they follow on from its 45mm LLC59 colimators. Like LLC59, Vega collimators will be available in PMMA plastic, but also in polycarbonate. There are eight beam options, some of them compatible with colour mixing or tunable white use. Compatibility is said to ...

For hyperscale data centres, preparing for ‘co-packaged optics’ (CPO) Molex has announced a pluggable module for external laser sources, with a cage and blind-mating hybrid optical-electrical connector. It is called Elsis. “Traditional pluggable modules have their optical connections at the user side of the module, creating concerns about eye safety when used with high-power laser sources, such as those planned ...

Led lighting certification body Zhaga has announced the first products that have met its ‘Book 24’ definition of luminaires that can be programmed over NFC (near-field communications). “Tridonic is the first company that has earned Zhaga-NFC certification for a number of their LED drivers [right],” according to Zhaga, and they can now carry the Zhaga-NFC certification logo. Book 24 application ...

Diodes has introduced a 36V low-drop linear driver for strings of LEDs, with 5kV ESD protection on the input and output current adjustable up to 100mA. The company describes AL5819, as it is known, as “ideal for 5V, 12V, and 24V LED lamps and strips”. Vin and the top of the LED string can be the same or different – ...