optical filters
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This is our current range of Stocked Optical Filters. Please contact us for prices.

Express Optics Stock Number Item Description Number Available
EX500 Heat Filter. Material: KG1 or equilivant. 10.0mm diameter +0-0.1mm. Thickness= 3.0mm +/-0.25mm. Optically polished both sides. Edge fine ground 2
EX501 Heat Filter. Material: KG1 or equilivant. 20.0mm diameter +0-0.1mm. Thickness= 3.0mm +/-0.25mm. Optically polished both sides. Edge fine ground 3
EX502 Heat Filter. Material: KG1 or equilivant. 30.0mm diameter +0-0.2mm. Thickness=3.0mm +/-0.25mm. Optically polished both sides. Edge fine ground. 1
EX503 Heat Filter. Material: KG1 or equilivant. 45.0x45.0mm +0-0.2mm. Thickness=4.20mm +/-0.25mm. Optically polished both sides. Edge fine ground. 4
EX504 Heat Filter. Material: KG1 or equilivant. 50.0x50.0mm +0-0.2mm. Thickness=3.0mm +/-0.1mm. Optically polished both sides. Edge fine ground. 0
EX505 Calflex 3000. Length=34.0mm +/-0.2mm. Height=11.0mm +/-0.1mm. Thickness=1.0mm +/-0.2mm. High temperature heat filter. 4
EX506 Calflex 3000. Length=50.0mm +/-0.2mm. Height=50.0mm +/-0.2mm. Thickness=1.0mm +/-0.2mm. High temperature heat filter. 7
EX507 Filter Cyan. Material: C54 Filter. Substrate Materail Borosilicate. 10.0mm diameter +/-0.1mm. Thickness=1.0mm +/-0.2mm 66
EX508 Polarising Filter, material mounted between polished windows. 20.0mm diameter +0-0.1mm. Thickness=2.5mm +/-0.2mm. Edge fine ground. Flatness 3λ Parallel 3 mins of Arc. S/D 60/40 39

If you would like custom filters made up, in whatever quanities please contact us.

Please contact us on 01702 540187 or email info@litetec.co.uk for prices.