SLB-40B-100NIR1 40.0 mm Dia. x -99.7 mm FL; Coated; Double-Concave Lens 633-1064nm

The SLB-40B-100NIR1 is a high-quality double-concave lens, precision-engineered by OptoSigma. This lens, designed for use within the wavelength range of 633-1064nm, is constructed from n-bk7 Schott, a material renowned for its excellent optical properties.

The lens boasts a diameter of 40.0 mm and a back focal length of -99.7 mm, making it suitable for a wide range of optical applications. The edge thickness measures 5.9 mm, while the center thickness is a slender 2.0 mm, contributing to its overall compact design. The radii of curvature for this lens are -103.8 mm for the first surface and 103.8 mm for the second, ensuring optimal light refraction.

The SLB-40B-100NIR1 comes with a broadband anti-reflection coating, specifically designed for the infrared region (opt IR1), on both the front and back surfaces. This coating significantly reduces surface reflections, thereby enhancing the overall transmission efficiency of the lens.

This lens is a spherical lens, a common type of lens used in various optical systems due to its ease of manufacturing and high optical quality. The spherical shape allows for a more straightforward production process compared to aspherical lenses, making it a cost-effective choice for many applications.