Long Pass Glass Filters
Long-pass
glass
filters limit
the short wavelength transmittance of an optical system.
They are used
in conjunction with the upper wavelength limit of a detector to define
the spectral response
of the device or instrument.
These are polished
glass filters using
Schott glasses.
Standard filters are circular (12.7 or 25.4mm diameter) or square (50.8 x 50.8 mm) in shape. Thickness usually between 1 and 3 mm.
A wide selection of Schott glasses are available including: WG-225, WG-280, WG-295, WG-305, WG-320, GG-385, GG-395, GG-400, GG-420, GG435, GG-455, GG-475, GG-495, OG-515, OG-530, OG-550, OG-570, OG-590, RG-610, RG-630, RG-645, RG-665, RG-695, RG-715, RG-780, RG-830, RG-850, RG-900, RG-1000.
Please ask for the glass type and size that you require.