440HC10-25 25mm Dia. 440nm Borosilicate Glass Hard-Coated Narrowband Bandpass Filter, 10.0nm Bandwidth

The 440HC10-25 is a high-quality Bandpass Filter, sourced from the reputable Andover Corporation. This filter is specifically designed for applications requiring narrowband transmission, making it ideal for use in spectroscopy, fluorescence microscopy, and other precision optical systems.

The filter boasts a center wavelength of 440nm, with a 10.0nm bandwidth, providing a sharp passband and excellent out-of-band rejection. The cut-on wavelength is 435nm, and the cut-off wavelength is 445nm, further enhancing its performance.

The 440HC10-25 filter is constructed from borofloat33, a type of borosilicate glass known for its excellent optical properties and durability. The filter has a circular shape with a diameter of 25mm and a thickness of 5mm, ensuring robustness and ease of integration into various optical systems.

The filter's coatings are another notable feature. Both the front and back surfaces are hard-coated with the Andover Corporation's proprietary 440HC10 coating, which provides excellent environmental stability and resistance to scratching and abrasion. This coating also enhances the filter's overall transmission and maintains its specified performance over time.

The filter's geometry is that of a Thin Lens, which can be beneficial in certain optical system designs. It is currently in stock and available for immediate purchase, as indicated by its weblink status. For more information, please refer to the Andover Corporation's product page.