FSQ-U330 Optical Filter

Optical Filter, Visible Absorbing, 50.8 x 50.8 mm, Hoya U-330 Glass

Model: FSQ-U330

$192.00

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Product Series Overview

Colored Glass Absorptive UV Bandpass Filters

The FSQ-U330 Visible Absorbing Filter is a 50.8 x 50.8 mm dark glass optical filter that passes UV and absorbs visible wavelengths made of Hoya U-330 filter glass. These filters are precision polished for demanding research or OEM applications and are ideal for extraction of UV wavelengths.

Warning - this filter is extremely susceptible to high humidity. The filter will absorb moisture, and discoloration may happen. Please store this in a low humidity environment. We offer the FSQ-U330-C

, a coated version of this filter for humid environments. It prevents moisture from contaminating filter material, preventing stains, discoloration, and contamination. It also has 3% increase of transmission compared to uncoated version.

Specifications

Technical Specs

Type

Visible Absorbing Filter
Material

Hoya U330 or equivalent
Center Wavelength

330 nm
Angle of Incidence

0°
Size

50.8 x 50.8 mm
Size Tolerance

±0.3 mm
Thickness

2.0 to 3.0 mm, typical
Surface Flatness

≤2λ at 632.8 nm over the clear aperture

Surface Quality

60-40 scratch-dig
Damage Threshold

30 W/cm² CW, Typical
Wedge

≤3 arc min
Clear Aperture

central ≥ 80% of area
Chamfers

Up to 1 mm face width
Chamfers Angle Tolerance

45° ±15°
Cleaning

See How to Clean Optics

Type

Visible Absorbing Filter
Material

Hoya U330 or equivalent
Center Wavelength

330 nm
Angle of Incidence

0°
Size

50.8 x 50.8 mm
Size Tolerance

±0.3 mm
Thickness

2.0 to 3.0 mm, typical
Surface Flatness

≤2λ at 632.8 nm over the clear aperture

Surface Quality

60-40 scratch-dig
Damage Threshold

30 W/cm² CW, Typical
Wedge

≤3 arc min
Clear Aperture

central ≥ 80% of area
Chamfers

Up to 1 mm face width
Chamfers Angle Tolerance

45° ±15°
Cleaning

See How to Clean Optics

Resources & Downloads

2D / 3D CAD Software

Download CAD Files

Drawings And Cad

COLOREDG-S (61 kB, PDF)

Other

FSQ-U330 RoHS Certificate (703.5 kB, PDF)

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