49-392 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=200mm VIS-NIR 400-1000nm

The 49-392 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and an effective focal length of 200mm. This lens is designed for use in the visible to near-infrared spectrum, covering a wavelength range of 400-1000nm.

The lens is composed of two elements, made from N-BAK4 and N-SF10 Schott glass, which are renowned for their excellent optical properties. The use of these materials helps to minimize chromatic aberration, ensuring sharp, clear images across the entire spectral range.

The lens has a robust construction, with a thickness of 9.11mm at the edge and 9mm at the center. The center thickness is further reduced to 3.5mm at the 'a' position, providing a compact and lightweight design. The inner and outer radii of the lens are 0mm, indicating a symmetrical design that can be beneficial for certain optical applications.

The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating is designed to enhance the lens' performance in the visible to near-infrared spectrum, reducing reflection and increasing transmission.

The 49-392 is available from Edmund Optics and is currently in stock, making it an ideal choice for users looking for a high-performance achromatic doublet lens for their optical system.