Passive daytime radiative cooling technology
Through ongoing research, collaboration, and customer feedback, OPTOCOOL innovated advanced passive daylight radiative cooling (PDRC) techniques in technical textiles.
These advanced fabric technologies enable us to create innovative sun protection products.
How does the technology work?
Passive daylight radiative cooling technology works by reflecting UV and visible light while simultaneously rejecting the infrared rays that cause heat.
This is achieved by strategically transmitting those infrared rays via an atmospheric transparency window in outer space
The fabric rejects heat as explained below.
- High Solar Reflectance: Reflect sunlight, mostly visible and ultraviolet rays to avoid heating up from the sun.
- High Infrared Emittance: Emit infrared radiation at the specific wavelengths that correspond to the atmospheric window.
This allows the fabric to radiate heat back towards the cooler sky.
In summary, the fabric/material radiates more heat than it absorbs, leading to a cooler temperature than the surroundings.
What is an Atmospheric Transparency Window?
Our Earth's atmosphere has a "window" where certain infrared wavelengths can easily pass through. This window is between 8 and 13 micrometers.
How OPTOCOOL fabrics stay cool?
Our fabrics are engineered to have a high thermal emissivity with the use of specialized nanoparticle additives that act as tiny mirrors, bouncing sunlight away from the fabric's surface.
Through a combination of nanoparticle additives, specialized weaves, and our patent-pending technology, This fabric delivers unparalleled comfort and exceptional sun protection
Tested and Rated UPF 50+
Highest UV protection from sun damage
Blocks 99.95% of UVA & UVB rays.
With UPF 50+ certification, you can trust that you're shielding your skin from the sun's damaging effects while staying comfortable and stylish.
How do we prevent solar heating?
Imagine thick low clouds that act like a giant shade reflecting a significant portion of the sunlight back toward space to help keep the ground cooler.
Similarly, our passive daytime radiative cooling technology with UPF 50+ UV protection reflects sunlight and effectively radiates away the absorbed solar heat.
Safe for the environment
The technology doesn't involve any refrigerants or chemicals like air conditioners to keep cool.
Traditional air conditioning relies on chemical refrigerants that can leak and contribute to greenhouse gas emissions.
Zero energy cooling solution
Active cooling technologies require energy input.
Our fabric technology passively keeps cool through their reflective and emissive properties, making them highly energy-efficient.
Best hat and caps technology for outdoor activities?
- UPF 50+ excellent UV protection.
- Passive daylight radiative cooling technology the material keeps up to 6°C cooler than the surroundings
- Durable for prolonged use ensuring long-lasting comfort during sports, hikes, workouts, or any outdoor activity.