ir infrared and Bluetooth
Before we get to that, however, let’s talk about the ir infrared
The three bands of ir infrared divided by the atmosphere as follows:

Near-infrared band of 1 to 3 um

In 3 ~ 5 um infrared band

Far infrared wave band of 8 ~ 14 um

According to the infrared spectrum is divided into:

Near infrared wave band of 1 ~ 3 um

In 3 ~ 40 um infrared band

Far infrared wave band of 40 ~ 1000 um

In the field of medicine is often so division:

Near infrared region from 0.76 to 3 um

Mid infrared region from 3 to 30 um

Far infrared region from 30 to 1000 um

The difference between the infrared and Bluetooth

1.The  distance

Infrared: alignment, direct, 1 - 2 metres, one on one

Bluetooth: 10 meters, can strengthen the signal, can not bending, alignment, can be in the same room, the maximum number of links up to 7hardware.

simultaneous,
2 The industry

Infrared: very popular

Bluetooth: preliminary application

3 speed

Infrared: fast

Bluetooth: slow

4 security

Infrared: no difference

Bluetooth: encryption

5 of the cost of

Infrared: Low

Bluetooth: High