·Compact tsl2585 ambient light sensor (ALS) is the first product of its kind to support UV-A radiation detection;

·UV-A rays can penetrate the deep layer of the skin and may have a serious impact on health;

·With the UV-A detection function of the new ALS, users can receive the warning of over exposure to UV-A at an early stage;

·High sensitivity bright vision and infrared channels can realize accurate ambient light sensing behind low transmittance materials and OLED screens.

China, October 14, 2021 – Ames OSRAM (Swiss Stock Exchange Stock Code: AMS), the world’s leading optical solution supplier, announced the launch of an ambient light sensor tsl2585 using proprietary UV-A light detection technology. The tsl2585 of Ames OSRAM corresponds to the UV channel, which can detect the UV-A radiation in natural light and remind the user when the UV-A radiation is excessive. This sensor is extremely compact, so it is very suitable for space limited wearable applications and other mobile applications.

Although the earth’s atmosphere can block the UV-C part of sunlight, UV-A and UV-B radiation can reach the earth’s surface. Among them, UV-A radiation accounts for about 90% of the ultraviolet components reaching the earth’s surface, and can penetrate deeply into the lower skin layer of the skin. In some cases, it will have a serious impact on health, such as weakening connective tissue, accelerating skin aging, increasing the risk of skin cancer, etc. By using the new ambient light sensor of Ames OSRAM, smart watch users can receive an immediate warning when the UV-A radiation value in the environment is too high.

Barry Guo, marketing manager of Ames OSRAM, said: “tsl2585 has short integration time and high sensitivity. It can reliably detect ambient light even when placed under low transmittance materials and OLED screens. Its small size packaging and design greatly improve the manufacturer’s industrial design freedom.” this ambient light sensor adopts Ames OSRAM’s advanced interference filter, It can be accurately deposited on each photodiode pixel to create 315 nm-400 nm UV-A channel, human eye responsive bright vision channel and IR channel. They can provide necessary information for indoor and outdoor identification, UV index calculation and environmental illumination detection. In addition, the photodiode of tsl2585 adopts a unique off center arrangement, so that it can support the narrow frame design.

Tsl2585 integrates the light source flicker detection function and is equipped with three modulators with sampling rates up to 14khz. By providing illumination and ambient light stroboscopic information to the mobile phone camera, it can support the rapid automatic exposure of the smartphone camera and eliminate the ripple effect caused by the ambient lighting stroboscopic.

It uses an ultra flat package with a compact size of only 2.0 mm x 1.0 mm x 0.35 mm. It is suitable for space-saving system design and helps manufacturers design extremely compact equipment. The working voltage of this sensor is 1.8V and the current when it is not working is only 0.7 µ a.


Picture: Ames OSRAM

Tsl2585 expands the ambient light sensor product portfolio of Ames OSRAM based on UV-A detection devices.


Picture: Ames OSRAM

Due to the extremely short integration time, this sensor can reliably detect the ambient light even if installed under the OLED screen of the smart watch.

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