LED Luminaries

LED news and insight from our technology editor Steve Bush, who has been messing with LED lighting for more years than he would care to remember.

Replacement lighting

Bulb maker starts to tackle sleep issues

Utah-based Saffron has launched the Drift Light, a smart LED light bulb designed to improve the transition to sleep.

Electronics Weekly covered the effect of LED light circadian (sleep-wake) rhythms – scroll down to ‘Sleep’ here.

There are a whole bunch of inter-related light effects in the eye…

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Induction lamp competes with LED on price

A US company is attempting to compete with LED light bulbs using induction technology.

The Finally Light Bulb Company of Massachusetts makes a lot of claims about the quality of light – for example it has the “first energy-efficient A type light bulb that truly replicates the familiar warm and…

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Luxeon M aimed at outdoor lighting

Lumileds has announced Luxeon M, aimed at outdoor lighting, writes Steve Bush. With an 8mm2 emission area producing 900 lm at 700mA (Tj=85°C Vf=12V) from its 8W package, application in high-bay lighting is also expected. It will be released in three different colour temperatures: 3,000K…

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Sharp LED module is 50W HID halogen replacement

Ismosys has released details of Sharp Microelectronics 50W LED module which is capable of replacing traditional 50W HID halogen lamps in the same performance class, writes Richard Wilson.

The 50W Mega Zeni features a luminous efficiency of between 3590 and 4770 lm, a light output of up to 100 lm…

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Multi-die LED is brighter than halogen MR16

Cree’s multi-die MT-G LED is at the centre of this reference design which replaces 35-50W halogen MR16 bulbs, writes Steve Bush.

Available free from Cree’s website, it includes contributions from Diodes, National Semiconductor and Texas Instruments (alternative electronics); Neng Tyi Precision Industries (heatsink); Carclo and…

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Comment: LED lighting output standards needed

Poorly designed metrics hinder the development of efficient lighting technologies, writes Adrian Rawlinson, managing director of Marl International

Under the stricter requirements of Part L of the UK Building Regulations which came into effect in October 2010, lighting should produce at least 45lm/W measured at the circuit.

It is…

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ON Semi single channel LED driver for low power apps

Don’t miss the exhaustive look by our Technology Editor, Steve Bush, at the latest LED products hitting the market from Cree, Lumileds, Seoul Semiconductor, Osram, Nichia, and Sharp. He begins: All the major LED suppliers have released additional lighting-class LEDs over the past few months, particularly at the…

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