Zero Blue LED Phosphor Technology

Zero blue LED technology have gained traction recently following numerous studies that established the impact of light on the circadian rhythms. The photo receptors in our eyes are highly sensitive to blue at night (scotopic eye response) and green during the day (photopic eye response). Blue light, therefore, appears to have the strongest impact on the circadian rhythm while red light has minimal impact.

Since white daylight contains significant amount of blue light, exposure to white light during the daytime can have positive effects including boosting alertness and mood. On the other hand, exposure to blue light in the evening can cause sleep disruptions and prevent nighttime rest. That’s where zero blue LED lighting technology can help.

Our unique and proprietary amber phosphor sheet technology can help produce LED light with zero-blue content. The remote phosphor products can be used with blue LEDs or any commercial white LED products that contain a significant amount of blue light. The zero-blue products also enable direct conversion into the SAE Amber Zone for a wide range of automotive, maritime, and aerospace applications.

The light-converting films use a unique roll-based coating process to achieve superior performance while simultaneously reducing phosphor material usage between 33-50%, depending on the desired color temperature. The higher performance is a result of increased blue LED light absorption combined with reduced optical scattering losses. The phosphor films are compatible with a wide range of printing technologies  including 3D printing, which enable the production of hybrid light-emitting 3-dimensional photonic structures never before possible.

Production of the zero-blue amber light sheet products started in 2013 and the company’s ISO 9001 certification was maintained continuously since 2015. Light converting films are used today by several industry-leading LED and lamp manufacturers in the production of a wide range of LED parts annually.