Gigahertz-Optik GmbH, Germany (EU), is the only manufacturer of precise lighting measuring equipment that provides an integrated hardware and software solution to streamline the assessment of Human Centric Lighting (HCL) / Integrative Lighting, from design and prototyping, to commissioning in real-life spaces (offices, schools, etc.). The solution is compliant with “CIE S026/E:2018 - “ClE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light” and with “Performance Verification (PV)” of the “WELL Building Standard”. It also provides assessment of the Eh/Evmel performance metric.
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Up to now, assessing Human Centric Lighting (HCL) / Integrative Lighting has been a challenging process for researchers, lighting fixtures manufacturers, architects, lighting designers and end-users. The typical workflow consisted in measuring lighting conditions with spectrophotometers and proprietary software, saving the different (horizontal and vertical) spectral measurements (SPD) in excel-readable files (typically CSV, comma separated values), and then doing calculations, first in the Lucas et al. 2014 workbook, and lately in the CIE S026/E:2018 Toolbox. Reporting was next.
The “WELL Building Standard” provides different lighting requirement specifications for the built environment, in the photopic (visual lighting), and in the circadian (non-visual) domains. The environment has to be assessed for compliance with several lighting quality parameters such as light levels for visual acuity (illuminance), electric light quality (color rendering -CRI and IES-TM3018- and flicker/TLA) , and circadian lighting (equivalent melanopic lux -EML- and/or CIE melanopic equivalent daylight illuminance -MEDI D65-).
According to the “WELL Performance Verification Guidebook (Q3-2019)”, all these parameters must be calculated from illuminance and spectral measurements performed with calibrated meters (calibrated as per manufacturer specifications in an ISO/IEC 17025 Accredited Calibration Laboratory and/or with NIST/USA traceable calibration).
The recommended laboratory and field spectral lighting meters for HCL / Integrative Lighting are the following:
- MSC15 precise entry-level handheld stand-alone spectrophotometer with display, battery and USB for photometric and spectral measurements and calculations.
- CSS-45 sensor for photometric spectral measurements with USB (available with optional display CSS-D).
- BTS256-EF advanced handheld stand-alone spectrophotometer with display, battery and USB, for photometric and spectral and flicker/TLA (Temporal Light Artifacts) measurement and calculations.
Gigahertz-Optik is a well established and recognized European manufacturer of precise lighting measurement devices. All the devices are calibrated upon delivery and can be regularly calibrated per ISO/IEC 17025 Accredited Calibration Laboratories and/or NIST traceable facilities (upon request). The operation of these three families of devices can be automated through the use of different software solutions. Gigahertz-Optik provides single device software and SDK DLLs (software development kits) to perform lighting measurements in the Microsoft Windows operating system platform.
As a result of the collaboration of Gigahertz-Optik with Dr. Octavio L. Perez, Ph.D, WELL Accredited Professional (WELL AP), expert independent HCL consultant, and adjunct researcher at Mount Sinai Hospital in New York City, NY, we offer now an integrated hardware and solution for Human Centric Lighting (HCL) / Integrative Lighting where horizontal and vertical measurements can be taken simultaneously, working with different Gigahertz-Optik sensors/meters. With the single push of a button we can get now all the measurements and reports, a tedious work prior to the introduction of this solution. The software is compliant with “CIE S026/E:2018 - ClE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light” and can provide reporting and mission planning for evaluation and Performance Verification (PV) for the “WELL Building Standard”.
Contact:
Gigahertz-Optik+1-978-462-1818
