The 45-914 is a Plano-Concave Spherical Lens with a 9mm diameter, sourced from the renowned optical components vendor, Edmund Optics. This lens is designed for use within the visible to near-infrared (VIS-NIR) spectrum, spanning from 400 to 1000nm.
The lens's geometry showcases a thickness of 2.89mm at the edge, tapering down to 2.25mm at the center, with an effective focal length (EFL) of -18mm. The front surface radius (R1) is -14.12mm, and the back focal length (BFL) measures -19.26mm. The lens's inner and outer radii are both zero, indicating a plano surface on one side and a concave surface on the other.
The lens is crafted from the high-quality material n-SF11 from Schott, a leading manufacturer of optical glass. This material is known for its excellent optical properties, making it suitable for a wide range of applications.
The lens features a VIS-NIR coating, denoted as 'edm visnir0sp2002000' on both the front and back surfaces. This coating is designed to enhance the lens's performance within the VIS-NIR spectrum, providing improved transmission and reduced reflection.