Starfield’s adaptive setpoint daylighting introduces a new era of daylighting as evidenced by this analysis of a five zone daylighting system. Each zone is independently controlled, required no manual setup, and seamlessly interacts with user adjustments.

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  • Full room daylight harvesting
  • Unlimited number of daylighting zones
  • Continuous operation with low setpoints
  • Operates in both perimeter and interior zones
  • Self setting, self calibrating, and maintenance free with no manual setup
  • Close-loop and user interactive
  • Estimated 14% greater energy savings¹.


Conventional daylighting systems are neither energy efficient nor user friendly. As originally described by Francis Rubeinstein² in 1988, the central problem is ceiling mounted sensors further compounded by the more recent requirement to interact with user adjustments. The industry “solution” has been a variety of measures including high fixed setpoints, open loop logic, proportional settings, sliding setpoints, sensor location algorithms, and disabling daylighting to avoid interfering with user adjustment. The unsurprising result has been complicated systems that are both inefficient¹ and labor intensive.

A New Approach

Adaptive Setpoint Daylighting³ changes that. With this new patented technology, the daylighting paradigm has been changed from saving energy to serving users and the result is inherently better systems that are cheaper to buy and install, work better, and supports both single or multi-zone applications.


1 Sarith Subramaniam, 2013, Multi-zone Control of Daylight-Responsive Lighting Control Systems, Pennsylvania Stare University.
2 Francis Rubenstein et al, 1988, Improving the Performance of Photo-Electrically Controlled Lighting Systems, LBL-24871, UC-350,
3 Adaptive Setpoint Daylighting, Starfield Lighting Automation, US patent US9084308B2.