infrared radiation has three broad categories: near infrared (0.7–1.4 μm and 0.78–3 μm according to CIE and ISO 20473, respectively), mid-infrared (0.4–3 μm and 3–50 μm according to CIE and ISO 20473, respectively) and far infrared (3–100 μm and 50–1000 μm ...