The 450DIB25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to center at 450nm. This filter is sourced from Knight Optical, a renowned vendor known for their high-quality optical elements.
The filter is of the Bandpass type, which means it allows transmission of light within a specific range of wavelengths while blocking out unwanted light from other spectral regions. This particular model has a cut-on wavelength of 445nm and a cut-off wavelength of 455nm, making it ideal for applications that require narrow-band light in the blue region of the spectrum.
The 450DIB25 is made from UVFS Mal-1965, a material known for its excellent optical properties. It features a Thin Lens shape, which is beneficial for applications where space is a constraint. The filter has a thickness of 6.1mm, providing sufficient structural integrity while minimizing unnecessary weight.
Both the front and back surfaces of the filter are coated with KNI 450DIB, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency.