This is a 64-434 12.5 x 12.5 mm Dielectric High Performance Cold Mirror, designed for use with a 0 degree Angle of Incidence (AOI) and suitable for wavelengths ranging from 400 to 1150nm. The mirror is sourced from the reputable vendor, Edmund Optics.
The mirror is rectangular in shape, with a base material of borofloat33. It has a thickness of 1.1mm, providing a sturdy yet lightweight optical component. The mirror is coated on both the front and back with the EDM 64-433 coating, enhancing its performance and durability.
The mirror is categorized as a Hot/Cold Mirror, which is a type of dichroic filter that reflects one wavelength range while transmitting another. In this case, the mirror is designed to reflect heat (infrared light) while allowing visible light to pass through. This makes it ideal for applications such as thermal imaging, where it is crucial to separate the heat and visible light components of an image.
The mirror is available for purchase through the Edmund Optics website, where it is listed as being in stock. Further information, including technical specifications and purchasing options, can be found at the provided weblink: https://www.edmundoptics.com/p/0deg-aoi-125mm-square-cold-mirror/19146/