Plessey packaged LEDs to be used in CIRCADIAN ZircLight's circadian-modulated lighting systems

Jan. 7, 2016
PLYMOUTH, ENGLAND - Plessey will provide CIRCADIAN ZircLight, a global leader in providing 24/7 workforce performance solutions, with packaged LEDs for the development of circadian-modulated, smart LED lighting systems and lamps.

Based near Boston, Massachusetts, USA, CIRCADIAN ZircLight's lighting division is developing high quality, white light fixtures and backlighting which control bioactive light spectral wavelengths to maximize productivity during the day and prevent the harmful effects of light exposure at night.

The technological developments of CIRCADIAN ZircLight build upon a growing body of research showing that exposure to light at night causes a disruption of brain neuroendocrine systems, including melatonin and cortisol rhythms. This research suggests that the myriad of health issues related to shift workers may be due to the night time light exposure during night shifts.

Harish Rao, CIRCADIAN ZircLight's VP Lighting Products, said, 'We are developing a comprehensive set of smart, human-centric LED product solutions to provide the right light for human health, safety and productivity across the 24 hour day without changing colour temperature or dimming the lights. By working with partners such as Plessey, who are leaders in LED lighting and light sensors and controls, we are bringing a healthy revolution to how light is used during day and night.'

Dr. Keith Strickland, Plessey's CTO, said, 'There are more benefits to LED lighting than just cost saving. The possibilities of integrated solutions is the future of solid state lighting, and Plessey is at the forefront of this revolution. We are excited to be a part of this project and believe the combined skillset will create a ground-breaking product.'

The first range of the ZircLight products with Plessey's spectrum specific LEDs will be released in 2016.
Plessey is a leading expert in the manufacture of semiconductor products used in sensing, measurement and controls applications, and is now at the forefront of the Solid State Lighting revolution. Its MaGIC™ (Manufactured on GaN-on-Si I/C) LED technology has won numerous awards for its innovation and ability to cut the cost of LED lighting by using standard silicon manufacturing techniques.By using its understanding of electronics and expertise in micro-electronic product design and manufacture, Plessey is radically enhancing the human experience with micro-electronics solutions such that people achieve more than they thought possible.

CIRCADIAN is the pioneer and global leader in 24/7 workforce risk management systems. Supported by over 30 years of research and field application experience, CIRCADIAN provides consulting and technology solutions for employers who operate night shifts or round-the-clock schedules. Working from offices in North America, South America, Europe, Australia, and Asia, CIRCADIAN experts ensure that over half the Fortune 500, and other leading international companies, improve their health, safety and competitiveness in the global 24/7 economy. To learn more about CIRCADIAN, visit

About CIRCADIAN ZircLight
CIRCADIAN ZircLight owns an IP portfolio which provides solutions to optimizing 24/7 human performance and productivity and removing the potentially harmful blue light wave lengths which have been associated with breast, prostate and other cancers, diabetes and other metabolic syndromes, sleep disorders and depression. CIRCADIAN ZircLight is currently developing technologies and bringing to market products including LED lighting systems, eyewear and display screens which control the circadian timing of human exposure to spectrum-specific wavelengths for industrial, commercial and residential applications.