65-623 12.5 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 436nm

The 65-623 is a 12.5 mm diameter mounted traditional coated bandpass interference filter, with a thickness of 7.5 mm, specifically designed for a central wavelength of 436nm. This filter is sourced from the reputable optical vendor, Edmund Optics, and is currently in stock, as indicated by its weblink status.

This bandpass filter is characterized by its unique optical properties, which include a cut-on wavelength of 431nm and a cut-off wavelength of 441nm. These specifications ensure that the filter effectively transmits light within the desired wavelength range while blocking unwanted spectral components. The cut-on and cut-off wavelengths are crucial parameters in determining the filter's performance and are carefully controlled during the manufacturing process.

The 65-623 filter features a circular base shape and is made from a material identified as "uvfs mal- 1965". The circular base shape is a common design for optical filters, providing uniformity and consistency in the transmission of light. The material ID suggests that this filter is specifically designed for ultraviolet and far-blue spectral regions, making it suitable for applications in this wavelength range.

The filter's physical data includes a center wavelength (CWL) of 436nm, which is the wavelength at which the filter exhibits its maximum transmittance. This wavelength is often a key consideration in the selection of optical filters, as it directly impacts the color or spectral composition of the transmitted light.

The 65-623 filter is coated on both the front and back surfaces with coatings identified as "edm 65-623". These coatings are likely designed to enhance the filter's performance by reducing reflections, improving transmission, or providing additional wavelength-selective properties.

Finally, the filter's shape is described as a "Thin Lens", suggesting that it may have some degree of lens-like behavior, possibly due to a slight curvature or other lens-like design features. This could potentially influence the filter's optical performance, particularly in terms of its focus or imaging properties.