This product is a beam splitter, specifically a thin beam splitter, offered by the vendor Semrock. It is rectangular in shape with dimensions of 35.6mm in width and 25.2mm in height, and a thickness of 3mm. The material used in this beam splitter is UVFS mal- 1965, and it is designed to work with wavelengths of 488nm.
The front of the beam splitter is coated with sem di03-r488561, which is a specific coating for this particular model. The shape of the beam splitter is thin lens, which is a type of optical component that focuses or disperses a light beam by means of curvature.
According to the provided item data, this beam splitter is currently in stock and available for purchase. The product's webpage can be accessed through the following link: https://www.idex-hs.com/store/product-detail/di03_r488_561_t3_25x36/fl-006943.