The 280nm Filter is a rectangular dichroic filter, measuring 0.25 mm in width and height, with a thickness of 0.04 mm. This filter is sourced from Omega Optical, a reputable vendor known for its high-quality optical elements. The catalog number for this item is 3278, and you can find more information about it on the Omega Optical website.
This filter is made from UVFS MAL-1965 material, which is specifically designed for use in the ultraviolet spectrum. The filter's primary wavelength is 280nm, making it ideal for applications that require precise filtering in this range.
The filter features a dichroic coating on both the front and back surfaces. This coating is specifically designed for the 280nm wavelength, enhancing the filter's performance and ensuring accurate filtering. The coating is referred to as "ome 280 fil" in Omega Optical's catalog.
The filter's shape is described as a thin lens, which suggests that it may have some light-focusing capabilities in addition to its filtering function. However, the specifics of this lens shape are not provided in the item data.