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Description

Shortpass filters are designed to transmit wavelengths lower than the cut off point and reflect all higher wavelengths. Knight Optical\'s Dichroic filters are comprised of a thin-film dielectric coating on glass, resulting in sharp transitions between the transmitted and reflected bands. With negligible absorption, this type of filter is ideal for high powers and lacks the strong fluorescence of certain glass filters.

Our dichroic shortpass filters are available in a range of wavelengths and are supplied in standard 12.5mm and 25mm diameter or 50mm square types. We are happy to cut and edge filters for non standard sizes to suit your application.

490FDS50 - Dichroic Shortpass Filters

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Specifications

Diameter: Not Specified
Thickness: 1.1 mm
Transmission Wavelength Range: 373 – 490 nm
Cut-Off Wavelength: 490 nm
Transmission: 95 %
Blocking (Optical Density): OD<1
Length: 50.0 mm
Width: 50.0 mm

Got questions about specs? Use the inquiry form to ask.

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Features

  • Available size: Square 7mm-300mm, Diameter 10mm-400mm
  • Cutting down or edged to special shapes and sizes at short notice
  • Mounting of diameters and squares
  • Available in sets, supplied in a wooden storage box for research and laboratory use.

Applications

Dichroic shortpass filters are used in several applications such as stage lighting and entertainment.

Frequently Asked Questions

What are dichroic shortpass filters used for?
Dichroic shortpass filters are used to transmit wavelengths lower than the cut off point and reflect all higher wavelengths. They are commonly used in stage lighting and entertainment.
What are the available sizes for dichroic shortpass filters?
Dichroic shortpass filters are available in standard 12.5mm and 25mm diameter or 50mm square types. They can also be cut and edged for non-standard sizes to suit your application.
What are dichroic filters made of?
Dichroic filters are comprised of a thin-film dielectric coating on glass, resulting in sharp transitions between the transmitted and reflected bands.
What is the transmission accuracy for dichroic shortpass filters?
The transmission accuracy for dichroic shortpass filters is T Max=95% typical, depending on the type and substrate.
What is the wavelength range for dichroic shortpass filters?
The wavelength range for dichroic shortpass filters is 300-1200nm, depending on the type.

Got more questions? Use the inquiry form to ask the supplier directly.

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