VPF-50S-12-65-82000 50 x 50 mm Optical Glass Interference Bandpass Filter 820nm

OptoSigma's VPF-50S-12-65-82000 is a high-quality optical glass bandpass interference filter, designed with a rectangular base shape and a size of 50 x 50 mm. This filter is specifically centered at 820nm, with a 12nm bandwidth, making it ideal for applications that require narrow-band transmission.

The filter is made from UVFS material, identified as MAL-1965, and has a thickness of 3mm. It features a cut-on wavelength of 814nm and a cut-off wavelength of 826nm, ensuring a precise and narrow transmission window around the central wavelength. The cut-on and cut-off values are crucial in determining the filter's performance and are carefully controlled during the manufacturing process.

The VPF-50S-12-65-82000 is coated with OptoSigma's proprietary VPF-12-65-82000 coating on both the front and back surfaces. This coating enhances the filter's performance by reducing unwanted reflections and increasing transmission efficiency. The coating also provides excellent environmental stability, ensuring the filter maintains its performance over time.

The filter's geometry is designed in a Thin Lens shape, which is beneficial for applications where minimal thickness and weight are required. This feature also allows for easy integration into optical systems without causing significant disturbances to the optical path.