Intuitively, you can think of IR illuminators as a flashlight that makes it always bright for the camera, regardless of the time of day. The use of this light to illuminate the interactive floor is possible because human eyes do not see this light, and thus the light does not interfere with the use of the interactive floor by users.
There are two types of IR illuminators:
- Illuminators integrated with the camera - this is usually the case with CCTV cameras.
- External illuminators - required for use with USB cameras that do not have an integrated IR illuminator.
Criteria for selecting the right IR illuminator:
- Choose an illuminator with 850nm diodes (in practice, all popular illuminators use this wavelength of light).
- Look for illuminators with a wide beam angle (optimally 120 degrees or more) to evenly illuminate the interaction area.