Cold Filter 50mm 700nm

CLDF-50S

The principle of the cold filter is similar to the glass that is used in a halogen lamp to protect the heat. It enables the visible range to transmit and cut-off the IR range (heat).
◦The feature of the dielectric optical coating filter is to have a steep decline of transmittance from the visible range to IR range. In addition to this; the heat absorption filter is efficient for transmitting at the visible range and cutting off the IR range.
◦It is frequently used as a IR cut filter on a CCD sensor.
◦It is also used as a filter to cut-off the heat from the illumination in a biological microscope to avoid heating up the specimen.
More Information
Name Cold Filter 50mm 700nm
Weight 0.0130kgs
Standard Coatings Available No
Guide
  • Different size, wavelength and deviation ratio that are not mentioned on-line or in our catalog are available as custom products upon on request.
  • For a specific filter holder, please contact our Sales Division.
Remark -
Attention
  • The transmittance graph drops on the long side of the visible range when the incident angle is slightly slanting.
  • When placing the filter too close to a light source, the heat absorption may damage the filter due to a rapid change of the temperature.
  • The backside of the cold filter is not coated with AR. The absorption filter may have a backside reflectance value of 4%, a total of 20% of loss can occurred.
Image Label Cold Filter 50mm 700nm
Material Heat Absorbing glass
Incident angle
Wavelength Range 400 - 2000nm(Wavelength above 900nm is brocked )
Surface Quality (Scratch-Dig) 60-40
Clear aperture Circle of 90% of the diameter or Circle inscribed in a square of 90% of the dimensions
High transmittance range <br>(normal incident) 400 - 600nm
Transmittance <br>(normal incident) >80%
Cutoff range <br>(normal incident) 800 - 2000nm
Transmittance of cutoff range <br>(normal incident) <10%
Wavelength at 50% 700±20nm
In stock
SKU
CLDF-50S
£137.20

Delivery in : 3-5 days

The principle of the cold filter is similar to the glass that is used in a halogen lamp to protect the heat. It enables the visible range to transmit and cut-off the IR range (heat).

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