Longpass Coloured Glass Filter

Coloured glass filters absorb and transmit different spectral bands. Unlike dielectric filters, the center wavelength does not change when the AOI of the beam changes. YZSY Optics provides all kinds of optical coloured glass filters to suit your application.

Material:Coloured glass

Surface Accuracy:λ/ 2 @ 633 nm (25mm Area)

Parallelism:＜1 arcmin

Surface Quality:40-20

Dimension Tolerance:＋0.0/-0.2mm

Thickness:2mm ±0.2mm

Central Wavelength Tolerance:±10nm

Transmission Tavg:＞85%

Central Wavelength :Location of wavelength point with 50% of peak transmittance