This is a Germanium Plano-Convex lens, sourced from Alkor Technologies, with a diameter of 25.4 mm. The lens is designed with a focal length of 150mm, making it suitable for a wide range of applications that require precise focusing capabilities. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
The lens's geometry is characterized by its edge thickness of 2mm and center thickness of 2.2mm. The inner and outer radii are 0, indicating a plano-convex shape. The lens is made of Germanium burnett, a material known for its high refractive index and transparency in the infrared region, specifically at a wavelength of 10600nm.
For more information about this lens and its specifications, you can refer to the vendor's website at http://www.alkor.net/germanium_lenses.html. The link is currently valid and indicates that the lens is in stock, ensuring quick delivery upon order.