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RFQ

Long pass filter

Product Info

A filter in which the pass band is a wavelength range higher than the wavelength range that is blocked. Long pass filters pass all wavelengths longer than the cut off wavelength. Long pass filters include cold mirrors, colored glass filters, and thermo set ADC (optical cast plastic) filters. 



 

Specifications

 

Material:

Optical glass, fused silica

Diameter:

+0/-0.2mm

Thickness:

+/-0.1mm

Clear aperture:

> 80% of diameter

Surface quality:

60-40 scratch and dig

Transmitted wavefront, P-V

λ/4 @632.8nm

Coating type:

Long pass filter

Surface 1:

multi-layer dielectric coating

Surface 2:

MgF2

Transmission:

>85%

Cut-on tolerance:

2%

Cut-on Slope:

3%

Blocking:

Optical density, OD > 2

 

A filter in which the pass band is a wavelength range higher than the wavelength range that is blocked. Long pass filters pass all wavelengths longer than the cut off wavelength. Long pass filters include cold mirrors, colored glass filters, and thermo set ADC (optical cast plastic) filters. 



 

Specifications

 

Material:

Optical glass, fused silica

Diameter:

+0/-0.2mm

Thickness:

+/-0.1mm

Clear aperture:

> 80% of diameter

Surface quality:

60-40 scratch and dig

Transmitted wavefront, P-V

λ/4 @632.8nm

Coating type:

Long pass filter

Surface 1:

multi-layer dielectric coating

Surface 2:

MgF2

Transmission:

>85%

Cut-on tolerance:

2%

Cut-on Slope:

3%

Blocking:

Optical density, OD > 2