National Treasure: Temple Bell
The Byodoin Temple Bell, a National Treasure believed to have been produced in the 12th century, revealed its bronze tones with cutting-edge LED lighting – a difficult task with conventional halogen lamps. The LEDs used for this project were custom-developed by adding High CRI functionality to glare-reducing dimmable universal down lights (UDL). High CRI LEDs control wavelengths to reduce yellow hues compared to conventional LEDs, reducing dullness and bringing out green and blue coloration. Repeated tests with multiple color temperatures allowed us to express color tones in the Temple Bell that could not be revealed with regular LEDs. Warm white light with a color temperature of 3500K produces the bronze coloration.
Limiting wavelengths that cause dull appearance