LED Lighting

Cree is aiming at horticulture lighting with a 660nm red led that is 6% more efficient than its XP-G3 Photo Red S Line devices. Called the XP-L Photo Red S Line, “this extra performance can be used to lower Photo Red LED count in luminaires by 35% while still maintaining the same total system efficiency”, according to the company. A typical ...

Toshiba Electronics has introduced a 60V 1A single-contact photo-relay in a 2.6 x 7mm 4pad SO4 package. Called TLP3640A, it can switch 60Vdc or 60Vac peak, with a typical on-resistance of 0.14Ω and maximum off-state leakage of 1µA. 100ms pulses of up to 3A can be carried. Operation is over -40 to +110°C, and de-rating starts at 25°C, dropping linearly ...

ElFys has launched circular four-quadrant near-infra-red detector with a 14mm diameter active area, leading to 38.5mm2 of sensing surface in each quarter. Named QPD-385-Y, the sensor’s dark current is typically 5nA per element (140V bias, 30nA max) with a temperature coefficient of 1.11x/°C. Illuminated with 1.064μm wavelength light, at the same 140V bias typical sensitivity is 640mA/W (500mA/W minimum). Capacitance ...

Augmented reality glasses need extremely micro-bright displays to compete with daylight, and if that is not a sufficient challenge for industry, power consumption and lifetime also need to be kept under control. Towards these triple goals, Fraunhofer Institute for Photonic Microsystems (IPMS) has developed a novel way to stack OLEDs “introducing a highly efficient monochrome OLED microdisplay with a brightness ...

  Gaggione is offering versions of its Avika range of LED streetlight lenses made using recycled plastic. We are “incorporating recycled PMMA into our range, derived from recycled industrial scraps”, according to the company. “Our team selected one of the most transparent recycled materials on the market: recycled Plexiglas 8N. This material, both lightweight and durable, guarantees high performance in ...

Toshiba is aiming at 400V automotive systems with a 400V photo-relay that can handle 900V and ~30mA. Recommended maximum operating voltage is 720V. Called TLX9150M, it measures around 10 x 8 x 2.5mm and can carry 50mA at 25ºC, 20mA at 105ºC and 10mA at 125ºC, or 1ms pulses of 150, 60 and 30mA respectively. The package, SO12L-T has 8mm ...

Delo has developed a transparent adhesive for bonding automotive headlights. “Photobond OB4210 is characterised by its yellowing stability at high temperatures” according to the company. “Manufacturers of automotive headlights can use it to realise optically sophisticated applications – the  transparent characteristics make it hardly distinguishable from the lens material.” Transparency is typically retained after a 500 hour storage at +140°C. It ...

Sony Space Communications Corporation (SSCC) and Astro Digital are partnering for the design, manufacture and launch of two micro-satellites.   The Astro Digital satellites will carry an SSCC optical terminal for establishing high data-rate Lasercom links with each other, as well as with terminals on the Earth. The idea is to showcase SSCC’s optical communications technology and help laser communications ...

Lumissil Microsystems is aiming at adaptive beam vehicle headlights with controller for dozens of power LEDs. It is for ‘matrix’ headlights, that have an array of close-packed power LEDs and projection optics that focus that any pattern on the array forwards from the vehicle – allowing headlights to produce arbitrary beam patterns – usually controlled by an on-board forward facing ...

Vishay has stretched an SO-6 package to accommodate 1kV operation from opto-based mosfet and IGBT gate drivers. The body is ~7mm from end to end and creepage is 8mm. Clearance is 7mm for the ‘option 9’ package which has conventionally bent legs, or 8mm for the ‘option 8’ package which has widely-splayed legs (see image). Peak working voltage is 1.14kV ...