84-702 25 mm Dia. Hard Coated High Performance OD 4.0 Shortpass Filter; t=3 mm 400nm

The 84-702 is a high-performance shortpass filter, designed and manufactured by Edmund Optics, a leading global supplier of optical components. This filter, with a catalog number 84-702, is specifically engineered for applications requiring precise wavelength control in the ultraviolet (UV) range.

The filter features a circular geometry with a diameter of 25 mm and a thickness of 3 mm, making it suitable for a wide range of optical systems. It is constructed from UVFS Mal-1965, a material specifically chosen for its excellent optical properties in the UV range.

The 84-702 filter is coated with EDM 84-689 on both the front and back surfaces. This hard coating enhances the filter's durability and resistance to environmental factors, ensuring reliable performance even in challenging conditions.

The shortpass characteristic of this filter is defined by its cut-on wavelength at 0 nm and cut-off wavelength at 400 nm. This means it allows UV light with wavelengths shorter than 400 nm to pass through while blocking light with longer wavelengths. This property is crucial in various applications, such as UV spectroscopy, fluorescence microscopy, and other UV-based imaging techniques.

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