49-955 18 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=22.5mm VIS-NIR 400-1000nm

The 49-955 is a high-quality achromatic doublet lens, boasting an 18 mm diameter and an effective focal length of 22.5mm. This lens is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm, making it a versatile choice for a wide range of optical applications.

The lens is composed of two elements, N-BAF10 and N-SF57, both from Schott, a renowned manufacturer known for their precision and quality. The N-BAF10 element is a borosilicate glass with high transparency and low autofluorescence, while the N-SF57 is a dense flint glass with excellent refractive index and dispersion properties. This combination helps to correct chromatic aberration, ensuring sharp, clear images.

The lens features a robust construction, with a center thickness of 8.7mm and edge thickness of 8.03mm. The inner and outer radii are 0mm, indicating a symmetrical design. The lens also includes a coating on both the front and back surfaces, specifically the EDM VIS-NIR 0SP2002000 coating, which enhances its transmission and durability in the specified wavelength range.

This lens is available from Edmund Optics, a leading supplier of optical components. The item data indicates that the lens is currently in stock, ensuring quick delivery for your optical project needs.