Compare Model Drawings, CAD & Specs Optic Size Transmittance Range Availability Price
25.4 mm diameter cold mirror and longpass filter
Cold Mirror, 25.4 mm, 45° AOI, 780-2500 nm Transmittance
$44
In Stock
Ø25.4 mm 780-2500 nm
In Stock
Cold Mirror, 50.8 x 50.8 mm, 45° AOI, 780-2500 nm Transmittance
$77
50.8 x 50.8 mm 780-2500 nm

Specifications

  • Type
    Cold Mirror
  • Transmittance Range
    780-2500 nm
  • Transmission
    Tavg≥85% 780-1250 nm; Tavg≥80% 850-2500 nm
  • Reflectance Band
    400-700 nm
  • Reflectance
    Ravg≥95%
  • Angle of Incidence
    45° ±5°
  • Material
    Borofloat® borosilicate float glass
  • Surface Quality
    80-50 scratch-dig
  • Surface Flatness
    6–8λ per 25.4 mm at 546.1 nm over the clear aperture
  • Thickness
    3.3 mm
  • Thickness Tolerance
    ±0.2 mm
  • Size Tolerance
    ±0.4 mm
  • Clear Aperture
    ≥central 90% of dimensions
  • Temperature Range
    -100 to 500°C

Features

Transmit Heat Away From Optical Systems

Cold mirrors reflect visible wavelengths at a 45° angle of incidence while transmitting IR wavelengths.

Cold Mirror Transmission by Wavelength