49-034 12.5 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=1.5mm 900nm

The 49-034 is a Longpass Filter, a type of optical filter that transmits wavelengths longer than a specified value, while blocking shorter wavelengths. This particular model has a diameter of 12.5 mm and a thickness of 1.5 mm, making it suitable for a wide range of optical applications.

The filter is manufactured by Edmund Optics, a leading supplier of optical components, and is identified by the catalog number 49-034. It is available for purchase directly from the vendor's website, where it is currently listed as in stock.

The 49-034 features a traditional coating on both the front and back surfaces, enhancing its performance and durability. The cut-on wavelength for this filter is 900 nm, meaning it begins to transmit light at this wavelength and beyond. The cut-off wavelength, on the other hand, is 0 nm, indicating that it blocks all wavelengths shorter than 900 nm.

This filter is designed to be used with a Thin Lens, a type of lens with a short focal length and a small diameter relative to its focal length. The filter's geometry is specifically tailored to match this type of lens, ensuring optimal performance and compatibility.