690DIB25 25 mm Dia. Standard Interference Bandpass Filter 690nm

The 690DIB25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 690nm range while blocking light at other wavelengths. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.

The filter is made from UVFS Mal-1965, a material that ensures reliable and consistent performance. It features a circular base shape, with a thickness of 6.1mm, making it suitable for a wide range of optical applications. The filter's geometry is designed to provide a balance between compactness and durability, ensuring it can withstand typical handling and usage in optical systems.

The 690DIB25 has a cut-on wavelength of 685nm and a cut-off wavelength of 695nm, meaning it begins transmitting light at 685nm and stops transmitting at 695nm. The central wavelength (CWL) of the filter is 690nm, which is the wavelength at which the filter has its maximum transmittance. This makes it ideal for applications that require narrow-band light in the 690nm range.

The filter is coated with KNI 690DIB on both the front and back surfaces, which enhances its performance and durability. The shape of the filter is thin lens, which is designed to minimize optical aberrations and ensure optimal light transmission.

The 690DIB25 is currently in stock and available for immediate purchase. More information about this product, including pricing and delivery times, can be found on the Knight Optical website using the provided weblink.