The 49-393 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and an effective focal length of 250mm. This lens is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm.
The lens is crafted from two types of Schott glass, N-BAK4 and N-SF10, which are renowned for their excellent optical properties. The use of these materials ensures high image quality, low chromatic aberration, and excellent light transmission.
The lens geometry is meticulously designed, with a central thickness of 9.75mm and edge thickness of 10.54mm. The radii of curvature are R1: 162.59mm, R2: -123.82mm, and R3: -402.58mm, which contribute to the lens's superior optical performance.
The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces. This coating enhances the lens's durability and resistance to environmental factors, while also reducing surface reflections and improving light transmission.
The 49-393 is currently in stock and available for purchase on the Edmund Optics website. With its superior optical performance, robust construction, and wide spectral range, this lens is an excellent choice for a variety of applications in the fields of imaging, spectroscopy, and metrology.