David Shiller

Amber LED light fixtures are used in cleanrooms to minimize the impact on photochemically sensitive materials and processes, such as photoresists used in semiconductor manufacturing. The 590nm amber light filters out shorter, potentially damaging wavelengths (like blue and UV), preventing premature reactions or exposure. Why Amber Lighting is Used in Cleanrooms: Protection of Photoresists: In semiconductor manufacturing, [...]

A new study was published last month, Non-Image-Forming Effects of Daytime Electric Light Exposure in Humans: A Systematic Review and Meta-Analyses of Physiological, Cognitive, and Subjective Outcomes, in the IES journal Leukos. Light exerts numerous nonvisual or non-image-forming, effects – such as its impact on melatonin suppression, circadian phase-shifts, sleep quality, and alertness. While research [...]

  A recent article, Guidelines for Converting LED to LED: What Turnkey Lighting Contractors Need to Know, by George McIntyre, addresses the emerging need for second-generation LED retrofits in commercial and industrial buildings. As many first-generation LED systems installed between 2015 and 2020 begin to show signs of decline, lighting contractors should approach LED-to-LED conversions [...]

  Osteo-odonto-keratoprosthesis (OOKP), commonly referred to as “tooth-in-eye” surgery, is a remarkable and complex surgical procedure designed to restore vision in patients who are blind due to severe corneal damage, particularly when all other treatments have failed. Developed over 60 years ago by Italian ophthalmic surgeon Benedetto Strampelli, OOKP is now performed in select centers [...]

  CANADA LIGHT EXPO 2025 Dates:  November 12-13, 2025 Location: International Centre, Toronto, Canada Focuses of the show include: Architectural Lighting Landscape Lighting Smart Lighting Energy Efficient | Sustainable Lighting Human Centric Lighting High End Decorative Lighting Horticulture Lighting Healthcare Lighting Over 75 exhibitors and conference educational sessions. One highlight will be Keynote Speaker Douglas Steel [...]

T1L (10BASE-T1L) Ethernet technology has significant potential to accellerate building automation, by enabling the reuse of existing wiring to upgrade network infrastructure without costly running of new wiring. Building management systems (BMS) can been run on T1L and this can have implications for lighting systems. T1L Ethernet is a long-distance networking solution that leverages a [...]

  Here is my latest article published in the May issue of LD+A Magazine: Al Jamea-tus-Saifiyah University’s Nairobi, Kenya campus stands as a testament to the seamless integration of historical inspiration and contemporary design. Drawing from the rich architectural heritage of the 10th-century Fatimid era, the campus design incorporates verdant gardens and tranquil spaces that [...]

The Crestron SolarSync Outdoor Daylight and Color Temperature Sensor (GLS-LCCT) enables the ability to regulate indoor lighting to match the intensity and color temperature of actual daylight outdoors. A single SolarSync sensor installed on a building’s rooftop measures the exact correlated color temperature (CCT) and illuminance (lux) of the natural daylight, and reports it to [...]

A decade after the widespread shift from fluorescent and HID lighting to LEDs, early adopters are now facing the need to replace their first-generation LED fixtures. Traditionally, utility rebate programs have not supported “LED-to-LED” upgrades, focusing instead on the initial move away from legacy lighting. However, as LED technology and energy efficiency standards have advanced, [...]