SLB-15B-40PIR2 15.0 mm Dia. x 40.6 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 40.6 mm
- BFL
- 39.4 mm
- R1
- 41.52 mm
- R2
- -41.52 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518720636186463
- λ
- 546.1 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
SLB-15B-40PIR2 15.0 mm Dia. x 40.6 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-15B-40PIR2 is a spherical lens with a base shape of a circle, designed and manufactured by OptoSigma. This lens is specifically designed for use within the wavelength range of 750-1550nm, making it suitable for a variety of applications within the infrared spectrum.
The lens has a diameter of 15.0 mm and a thickness at the edge of 2.0 mm, while the thickness at the center measures 3.4 mm. The effective focal length (EFL) of this lens is 40.6 mm, which is a critical specification for determining the lens's magnification power. The first radius of curvature (R1) is 41.52 mm, and the second radius of curvature (R2) is -41.52 mm, indicating a double-convex lens design. The back focal length (BFL) of this lens is 39.4 mm.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high transmittance in the visible and near-infrared spectral regions. The lens is coated with Opt IR2 on both the front and back surfaces, which is a broadband anti-reflection coating designed for the 750-1550nm range. This coating helps to reduce surface reflections, thereby increasing the amount of light transmitted through the lens.
