15-142 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.3 mm 850nm

The 15-142 is a Bandpass Filter with a diameter of 25 mm, manufactured by Edmund Optics. This filter is designed to transmit light within a specific range of wavelengths, while blocking other wavelengths, making it ideal for applications that require narrowband light transmission.

The filter is made from borofloat33, a type of glass known for its excellent optical properties and durability. It has a thickness of 3.3 mm, providing structural rigidity and minimizing optical distortions. The filter's base shape is circular, ensuring uniform light transmission and ease of integration into optical systems.

The 15-142 filter's physical data includes a cut-on wavelength of 845 nm and a cut-off wavelength of 855 nm, with a center wavelength (CWL) of 850 nm. This means it allows light transmission between 845 nm and 855 nm, peaking at 850 nm. This makes it suitable for applications that require light in the near-infrared spectrum.

The filter features hard coating on both the front and back surfaces, denoted as 'edm 15-142'. This coating enhances the filter's durability and resistance to scratches and environmental factors, ensuring long-lasting performance. The filter's shape is thin lens, further reducing optical distortions and ensuring easy integration into optical systems.