LED Lighting

Gaggione is focussing on narrower beams with two acrylic collimators and a set of radial beam masks. LLC22R (pictured) is a 16mm collimator claimed to achieve ±4.45° (8.9° FWHM) and 34.2cd/lm with Cree XP-P leds. Emitters up to 5 x 5mm can be accommodated. LLC25R is a 32mm collimator claimed to achieve ±2.15 (4.3° FWHM) and 149.9cd/lm with Cree XP-P ...

Cree has introduced a pair of circular emitter LEDs with no over-die lens for beam-forming applications. Colour temperature options are 5,000, 5,700 or 6,000K. “These LEDs deliver smoother, more focused light output through optics compared to traditional square LES designs – perfect for premium flashlights, torches, bike lights and headlamps,” according to the company. Using the same 3.45 x 3.45mm ...

How do you stop migrating birds from being attracted to oil rigs at night? The reasons that they should not land are two-fold: the mess that they make adds to maintenance costs, and birds that land are more likely to die before competing their journey. “Offshore platforms, such as oil and gas rigs, wind turbines, and their substations, offer a ...

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 ...

Castle Wonderland had one of the first fully-dimmable LED-lit rooms anywhere, when, in 2011, I made up 11 luminaires, each with an early 3W Cree led, and wired them in series for one of the ceilings here. It was my first experience of having aluminium and Perspex laser-cut – excellent fun. Initially, an commercially-made mains dimmer module was used, which ...

  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 ...

AL8866Q is an AEC-Q100 (Grade 1) qualified dc-dc converter controller aimed at automotive front lights such has headlamps. In needs an external n-channel power mosfet, and can implement buck, boost, buck-boost or SEPIC (single-ended primary-inductance converter, pictured) topologies. Operation is from 4.7 to 85V, covering 12V, 24V and 48V battery power rails. Analogue and PWM dimming are possible via a ...

LED lighting body Zhaga has released a standard for ‘linear socketable LED modules for non-SELV applications’ – Zhaga Book 26 – intended luminairs with LED modules that can be replaced without tools and that simply plug into internal wiring. Earlier Book 21 covers ‘linear socketable LED modules for SELV applications’ – SELV is an acronym for separated (or safety, depending ...

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 ...

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 ...