Optical Touchless Sensor to control a switch without physical contact
April 26, 2022
The NJL5830R is a reflective type optical sensor containing a high-power infrared LED, a photo diode sensor, and a signal processing IC in a unique package.
It has a high resistance to ambient light to prevent operation interference and can even be used for outdoor applications. In addition, the sensor has a reliable built-in interference prevention function between adjacent sensors. The intended applications are devices to be operated via touchless buttons without physical contact, provides a contribution to infection control and hygiene improvement.
Especially due to the Covid-19 pandemic, touchless sensors became much more popular to prevent contamination by bacteria or viruses through specific applications for public use.
Typical Application Circuits
Typical applications for touchless sensors are control panels and buttons for elevators, vending & ticketing machines, toilet flush & water tap control, soap dispensers, beverage server machines to name a few. The sensor has a reliable built-in interference prevention function between adjacent sensors, a detection distance of up to 50 mm is guaranteed and it even operates when wearing gloves. The integrated light modulation offers, beside a reliable interference prevention, a high resistance to ambient light, making it even suitable for outdoor use.
In addition, the IC is embedded in a thin miniature COBP package measuring only L3.6 x W5.8 x H1.2 mm, occupying only 21 square millimetre PCB area.
Samples and evaluation boards are available now and can be obtained from our approved local distributors or online partners.