Systems, Methods and Devices for Light Exposure via Visual Displays

Case ID:

This technology is a system and device that modifies visual displays such as computer screens, televisions, and smartphone screens to emit light at wavelengths that provide therapeutic effects.

As electronic devices with display screens are becoming increasingly common, the amount of time spent in front of screens is correspondingly growing. A UK survey found that the respondents spent, on average, 3 hours and 23 minutes of screen time per day, adding up to 50 days over a year. Screen time is particularly high among teens and tweens; in 2019, teens spent 7 hours and 22 minutes of screen time per day, even after excluding screen time for school or homework.

Given the trends in screen time, it is no surprise that society has paid increased attention to the potential harmful effects of spending so much time in front of display screens. In particular, the blue light emitted by these devices has been linked to eye problems such as dry eye, cataracts, and macular degeneration, as well as disruption of biochemical processes like production of melatonin and other hormones. In response to these concerns, solutions have been developed that limit blue light exposure from electronic devices. Popular solution include software that eliminates blue light or simulates the natural sunrise/sunset cycle, tinted glasses, and sheets applied to the physical screen.

This invention takes a different approach. Instead of merely eliminating the effects of blue light, it provides a controllable source of green light. Green light has been shown to be have therapeutic properties, including for pain reduction and reducing the severity and frequency of migraines. This invention therefore offers the potential to provide therapeutic effects by precise control of the intensity, duration, and wavelengths of green light during use of electronic devices.


  • Pain management
  • Stress management
  • Headache and migraine therapy


  • Enables concurrent light therapy and electronic device use
  • Improves sleep
  • Promotes work efficiency
Patent Information:
Contact For More Information:
Mitch Graffeo
Sr. Licensing Manager - COM-T
The University of Arizona
Lead Inventor(s):
Marvin Slepian
Mohab Ibrahim