62-494-INK 25 mm Dia. N-BAF10/N-SF10 Negative Achromatic Doublet; EFL=-100mm VIS 0° 425-675nm

The 62-494-INK is a 25 mm diameter Negative Achromatic Doublet lens, sourced from Edmund Optics. This lens is specifically designed for the visible spectrum, with a wavelength range of 425-675nm. The lens boasts an effective focal length (EFL) of -100mm, making it suitable for a variety of applications.

The lens is composed of two materials: N-BAF10 and N-SF10, both from Schott. These materials are chosen for their specific refractive indices and dispersion properties, which contribute to the lens's achromatic design. This design ensures that the lens minimizes chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The lens has a base shape of a circle and features a multilayer coating on both the front and back surfaces. This coating, designated as 'edm vis-0 std curve', is designed to enhance the lens's transmission and reduce reflection in the visible spectrum.

The lens's geometry includes a thickness of 5.81mm at the edge, with a central thickness of 2mm. The lens's inner and outer radii are 0, and it features three radii of curvature: r1=-70.57, r2=45.27, and r3=412.67. The lens's thickness at the center 'a' is 2.57mm.

According to the vendor's website, the lens is currently in stock, making it readily available for immediate use. For more information, including detailed specifications and purchasing options, please refer to the provided weblink.