Standard Solutions > Optics > Hot mirrors

Hot mirrors

Mirrors

Hot mirrors

Hot mirrors are used to separate visible light from heat. The use of borosilicate type glass enables operation at high temperatures. They should preferably be operated at an AOI of 0°. The most common wavelength range for an average transmission of 85% through the hot mirror is 420 nm – 700 nm. The reflection range for the hot mirror for R > 95% is 800 nm – 1000 nm.

Features

  • High transmission for the visible wavelength range
  • Highly reflective for infrared
  • Removes heat from the system
  • Uses Borofloat® type glass
  • Dielectric coating
  • Angle of incidence 0° or 45°
  • Custom mirrors available for your configuration

Technical data

Hot mirrors
Material

Borosilicate glass

Size

15 mm to 300 mm

Thickness

3.3 mm

Dielectric mirror coating
Transmission (typical)

> 85 % between 425 nm – 700 nm

Reflection (typical)

> 90% between 750 nm – 1050 nm

Surface quality

80/50 scratch/dig

Flatness

λ/2 @ 633 nm per inch

Protective chamfer

0.3 mm x 45°

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