SLB-25B-50NIR2 25.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -49.7 mm
- BFL
- -50.3 mm
- R1
- -51.9 mm
- R2
- 51.9 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-25B-50NIR2 25.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-25B-50NIR2 is a high-quality lens offered by OptoSigma, designed for use in the 750-1550nm wavelength range. This lens is a Spherical Lens of the Sub Type Spherical Lens (Concave-Concave), featuring a Base Shape of Circular.
The lens has a diameter of 25.0 mm, with a thickness at the edge of 5.1 mm and a thickness at the center of 2.0 mm. The Effective Focal Length (EFL) is -49.7 mm, making it a double-concave lens. The first radius of curvature (R1) is -51.9 mm, and the second radius of curvature (R2) is 51.9 mm, with a Back Focal Length (BFL) of -50.3 mm. The Inner Radius and Outer Radius are both 0 mm.
The lens is made of n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The lens is coated with opt ir2 on both the front and back, providing enhanced performance in the specified wavelength range.
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