ABLIC Inc. (hereinafter “ABLIC”), the semiconductor manufacturer, launched the S-5420, a UV light photodiode manufactured from silicon (*2) that detects UV light from the UV-A to the UV-B range (*3).
The S-5420 detects UV light without a filter by calculating the difference between high and low-sensitivity photodiode signals to remove visible light. The filter-less structure enables compact applications and prevents filter-induced attenuation. The compact transparent resin package expands the design flexibility of wearable devices.
This product is co-developed by a research team led by professors Shigetoshi Sugawa and Rihito Kuroda at the Graduate School of Engineering, Tohoku University.
(*1) Based on our research as of June 2018.
(*2) A UV light photodiode manufactured from silicon: Silicon semiconductors are highly versatile and silicon sensors readily lend themselves to the future evolution of circuit integration and high performance.
(*3) UV light from the UV-A to the UV-B range: The wavelength of UV-A is 315 – 400 nm, and UV-B is 280 – 315 nm, respectively.
Thanks to the use of silicon semiconductors, the S-5420 can measure UV light from the UV-A range, which causes skin blemishes and wrinkles, to the UV-B range, which causes sunburn. The small size of the S-5420 transparent resin package makes it easy to fit it into a variety of wearable devices allowing anyone to easily measure UV light intensity.
Compact size also promises high design flexibility of industrial devices like UV irradiance and exposure meters.
- Detects UV light from the UV-A to the UV-B range.
- Eliminates the need for a filter by calculating the difference between the two photodiodes.
- Compact resin package
- UV index meters
- UV light irradiation device
Ultraviolet Light Sensor, UV-A to UV-B Sensing Si Photodiode S-5420
Inheriting the semiconductor business of Seiko Instruments Inc., ABLIC Inc. is an IC manufacturer pursuing the further development of analog semiconductors.