Research

The demand for next-generation computers that can quickly calculate and process a lot of information is rapidly increasing. A logic device is a circuit that obtains an output value by applying one or more logic inputs to certain logic operation (AND, OR, etc.). A logic circuit can be made by combining a plurality of electronic transistors.

Mark Halper has an interesting article in LED’s Magazine interviewing Russell Foster, the scientist who predicted the non-visual receptors in the eye that are involved in the circadian response to light (pRGCs / ipRGCs). He says circadian lighting science isn’t ready yet, and there are too many unknowns.

On March 17th, 18 circadian lighting researchers published a “consensus view” of circadian lighting recommendations, titled: Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults, in the journal PLOS Biology. The authors include well-known circadian lighting researchers, George Brainard and Steven Lockley.

Two new studies, one on young children, the other on adults, suggest detrimental health effects of light at night.

Arguably, the biggest gap in LED metrics is a product lifetime metric and test procedure. Currently, the industry is rife with fraudulent emitter life claims used as LED system product life claims (lamps, luminaires, and engines).

In September 2021, the US Department of Energy (DOE) published a research study about how users and stakeholders engage with connected lighting systems (CLS) and make decisions during each step in the supply chain process, from production to operation, in commercial buildings in the United States.

The Portland IES will feature a presentation by John Arthur Wilson of Fernhill Shopworks on Wednesday, February 16, at 11:45 am PST. Wilson will be presenting findings from his 2021 lighting controls research. The free webinar is open to anyone in the industry. No pre-registration is required. Use the link below to join the Teams event : “Luminaire Level Lighting [...]

The All Things Lighting Association (ATLA) has been founded as a non-profit organization to advance, support, promote, and contribute to innovation, science, and engineering in all fields of lighting, including architecture, health, horticulture, and entertainment.

A team of researchers have recently published new research on window views from within buildings and have proposed a new framework for designing “view quality” for window views.  The team identified three critical factors in determining view quality.