49-936-INK 6.25 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=7.5mm VIS 0° 425-675nm

The 49-936-INK is a high-quality Achromatic Doublet Lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 7.5 mm. This lens is designed for use within the visible light spectrum, specifically between 425-675 nm.

The lens is composed of two types of glass, N-BAF10 and N-SF57, both from the reputable Schott brand. This combination is used to correct chromatic aberration, a common issue in lenses where different wavelengths of light are focused at different points. By using these specific types of glass, the 49-936-INK achieves a high level of color correction, making it ideal for applications that require sharp, clear images across the entire visible light spectrum.

The lens features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating helps to reduce surface reflections, thereby increasing the amount of light transmitted through the lens. It also provides some protection against environmental factors, such as dust and moisture.

The geometry of the lens is also noteworthy. It has a thickness of 4.61 mm at the edge, with an inner radius and outer radius of 0. The center thickness is 5 mm, with an additional 1 mm thickness at the center a. The lens's base shape is circular, and it is classified as a multiplet due to its construction from multiple elements.

The lens is available from Edmund Optics, a leading vendor in the field of optical components. According to their website, the lens is currently in stock, indicating its availability for immediate purchase and use.