In this modern age, IR sensors are typically used in motion detectors and the best VR headsets. In the latter, they measure the depth of a space and your proximity to things in your environment.

They are used in TV and AC remotes, heart rate monitoring devices, barcode scanners, motion sensors ... When it comes to currently used infrared photodiode sensors, they are typically made ...

Researchers have developed a sensor that non-invasively visualises respiratory motion during X-ray and CT scans.

As an example, [Circuit Valley] has an IKEA Vallhorn motion sensor for a teardown, it’s as you might expect, a passive infrared sensor (PIR) sensor coupled with a Zigbee interface. Inside the ...

(Passive InfraRed sensor) A device used to detect motion by receiving infrared radiation. When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal.

this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun. The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator ...

The Onvis outdoor motion sensor with Thread technology offers fast alerts, IP66 durability, 4-year battery, and HomeKit ...