10CGA-645 25.4 mm Dia. High Performance Colored Glass Alternative Longpass Filter 645nm

The 10CGA-645 is a high-performance colored glass alternative longpass filter, designed with a 25.4 mm diameter and a thickness of 1.1 mm. This filter, manufactured by MKS/Newport, is a crucial component for applications that require precise wavelength control.

The filter's primary function is to allow light transmission above a specified wavelength while blocking or attenuating light below that wavelength. In this case, the 10CGA-645 is designed to cut on at 645nm, meaning it begins to transmit light at this wavelength. The cut off is 0, indicating that it blocks all wavelengths below 645nm.

The filter's geometry is defined by its diameter and thickness. With a diameter of 25.4 mm, it is suitable for a wide range of optical systems. The thickness of 1.1 mm is designed to provide structural integrity while minimizing optical distortions.

The 10CGA-645 features a coating on both the front and back surfaces, identified as 'new 20cga-645'. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency.

The filter's shape is described as a 'Thin Lens', indicating that it has been designed to minimize optical aberrations and distortions. This makes it ideal for applications that require high-precision optical performance.