SLB-40B-250PIR2 40.0 mm Dia. x 250.6 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 250.6 mm
- BFL
- 249.4 mm
- R1
- 259.5 mm
- R2
- -259.5 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-40B-250PIR2 40.0 mm Dia. x 250.6 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-40B-250PIR2 is a high-quality spherical lens offered by OptoSigma, designed for use within the wavelength range of 750-1550nm. This lens boasts a 40.0 mm diameter and a focal length of 250.6 mm, making it suitable for a variety of optical applications.
The lens is fabricated from the well-regarded material n-BK7 Schott, which is known for its excellent optical properties. The base shape of the lens is circular, and it features a double-convex geometry with a center thickness of 3.5 mm and an edge thickness of 2 mm. The inner and outer radii are 0 mm, and the back focal length is 249.4 mm.
The SLB-40B-250PIR2 comes equipped with front and back coatings of Opt IR2, which are specifically designed to enhance performance within the 750-1550nm wavelength range. This coating aids in reducing surface reflections and increasing transmission, thereby optimizing the lens's efficiency and overall optical performance.
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