Thorlabs FGB37 BG40 bandpass filter

Product Description

Thorlabs FGB37 BG40 Colored Glass Bandpass Filter
This precision filter provides spectral control for applications requiring UV-to-orange wavelength transmission.

Key Specifications:

• Material: BG40 colored glass

• Diameter: 25mm (±0.2mm)

• Thickness: 3mm nominal

• Transmission: >80% @ 400-550nm

• Blocking: OD>4 outside passband

Optical Performance:

• Cut-On: 335nm (50% point)

• Cut-Off: 610nm (50% point)

• Surface Quality: 60-40 scratch-dig

• Coating: AR on both sides (400-700nm)

Condition:

✅ NEW IN PROTECTIVE PACKAGING
✅ OPTICALLY INSPECTED
✅ EDGES BEVELED (chamfered for safety)

Applications:

• Fluorescence microscopy

• Machine vision lighting

• Spectral imaging

• Laser beam conditioning