FEL1500 Dia:1in Longpass Filter; Cut-On Wavelength: 1500nm

The FEL1500 is a Longpass Filter, part of the extensive catalog of optical elements offered by Thorlabs. This filter, designed for use in optical systems, is characterized by its circular shape and thin lens design. The FEL1500 is fabricated from soda lime ru clear, a material known for its optical clarity and durability.

The filter has a diameter of 1 inch (25.4 mm) and a thickness of 3.5 mm, making it compatible with a wide range of optical systems. The Longpass Filter feature is particularly noteworthy. With a cut-on wavelength of 1500 nm, it allows the transmission of longer wavelengths while blocking shorter ones. This can be crucial in applications where specific wavelength selection is required.

The FEL1500 is coated on both the front and back with tho fel1500, a coating that enhances its performance and longevity. The coating ensures the filter maintains its specified characteristics even under demanding conditions.

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