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Cold mirrors are dielectically coated onto a glass substrate to reflect the visible spectrum of light and transmit the near infra-red, which contains the thermal energy. Deisnged for use at 45°, cold mirrors are used to control thermal energy entering temperature sensitive systems and are also an excellent alternative for transmitting the near infra-red spectrum. Cold mirrors have a sharp cut off between IR and visible because they have a dielectric coating that can be controlled. Cold mirrors are often used with tungsten lamps which are the source in a projector or lighting system.

Our stock range of cold mirrors reflect greater than 90% in the visible range of 425nm to 650nm and transmit highly between 800nm to 1200nm. All of our filters are tested in our state of the art metrology facility, using Agilent Cary 5000 spectrophotometers and full spectral data is available on request.

In addition to stocking 45° cold mirrors we also hold large sheets of 0° Cold Mirror available that can be cut to custom sizes at short notice. For more information on our stock range of cold mirrors, or to enquire about a custom quotation, please contact our technical sales team.

Material:
Diameter:
Length/width:
Thickness:
Surface quality:
Flatness:
Parallelism:
Coating Specification:
Borosilcate (LEGB) or equivalent
+0/-0.2mm
± 0.2mm
± 0.25mm
<60-40 scratch/dig
< average 5λ over 25mm (sheeted material)
< average 10 arcmin (not guaranteed)
Reflectance (45°) >90% average over 425-650nm
Transmittance (45°) >85% average over 800-1200nm
Cold mirror coating @ 45° AOI

Cutting down or edged to special shapes and sizes
Special sizes
Mounting (circles)

12 Items

Name Type Description Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
700FCQ2500 pdf Cold Mirror Transmits IR/Absorbs Visible 25 3.3 Borosilicate
$33.99
700FCQ4000 pdf Cold Mirror Transmits IR/Absorbs Visible 40 3.3 Borosilicate
$48.58
700FCQ5000 pdf Cold Mirror Transmits IR/Absorbs Visible 50 3.3 Borosilicate
$62.48
700FCQ2515 pdf Cold Mirror Transmits IR/Absorbs Visible 25 15 3.3 Borosilicate
$26.34
700FCQ2525 pdf Cold Mirror Transmits IR/Absorbs Visible 25 25 3.3 Borosilicate
$27.73
700FCQ4025 pdf Cold Mirror Transmits IR/Absorbs Visible 40 25 3.3 Borosilicate
$35.38
700FCQ4040 pdf Cold Mirror Transmits IR/Absorbs Visible 40 40 3.3 Borosilicate
$36.77
700FCQ5050 pdf Cold Mirror Transmits IR/Absorbs Visible 50 50 3.3 Borosilicate
$52.06
700FCQ6540 pdf Cold Mirror Transmits IR/Absorbs Visible 65 40 3.3 Borosilicate
$52.75
700FCQ6565 pdf Cold Mirror Transmits IR/Absorbs Visible 65 65 3.3 Borosilicate
$66.03
700FCQ10065 pdf Cold Mirror Transmits IR/Absorbs Visible 100 65 3.3 Borosilicate
$74.30
700FCQ160100 pdf Cold Mirror Transmits IR/Absorbs Visible 160 100 3.3 Borosilicate
$118.50

12 Items

1

Cold Mirrors

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