FB4250-500 Dia. 1 in IR Bandpass Filter; CWL=4.25 µm; FWHM=500nm

The FB4250-500 is a high-quality bandpass filter developed by Thorlabs, a leading vendor in the optical industry. This filter is designed with a circular base shape, making it compatible with a wide range of optical systems. The filter boasts a sapphire ow mal-1972 material ID, ensuring durability and reliability in various applications.

The FB4250-500 filter is specifically centered at a wavelength of 4250 nanometers, with a full width at half maximum (FWHM) of 500 nanometers. This means it allows light to pass through if its wavelength falls within this range, making it ideal for applications that require narrowband filtering in the infrared spectrum.

The filter has a diameter of 1 inch (25.4 millimeters) and a thickness of 3 millimeters, providing a robust and compact design. The cut-on wavelength is 4000 nanometers, and the cut-off wavelength is 4500 nanometers, further emphasizing its effectiveness in the infrared spectrum.

The coating on both the front and back of the filter is 'tho fb4250-500', which is specifically designed to enhance the filter's performance and durability. The filter's shape is thin lens, which is beneficial for applications that require minimal optical path length distortion.

According to Thorlabs' website, this item is currently in stock, ensuring quick delivery for your optical system needs. For more information, you can visit the provided weblink.