Provider of optical components, Edmund Optics has launched Plano-convex (PCX) lenses that are specifically designed for infrared spectroscopy and near-infrared imaging applications.
The TECHSPEC Silicon Plano-convex lenses have accurate polished surfaces with a convex surface on one side and a flat surface on the other. The lenses have a positive focal length and are developed to adjust with the flat surface facing towards the preferred focal plane. They come in various focal lengths that range from 25 to 250 mm and are available in both coated and uncoated versions with customized infrared coatings.
The lenses have low-density silicon and feature 3.422 index of refraction and 2.329 g/cm3 density, which is less than zinc selenide or germanium. They lenses are suitable for 1.2 to 7 µm wavelength range. The silicon can react with dilute alkalis and halogens, but does not react with majority of acids. It has 1150 Knoop Hardness rating that is harder than Germanium.
The TECHSPEC Silicon Plano-convex lenses are low-cost, lightweight and durable products. They are also suitable for focusing and collimation applications.