SLB-30B-40NIR2 30.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- -39.7 mm
- BFL
- -40.3 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-30B-40NIR2 30.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-30B-40NIR2 is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 30.0 mm, is specifically engineered for use within the wavelength range of 750-1550nm, making it suitable for a variety of near-infrared applications.
The lens features a base shape of a circle, with a thickness at the edge of 7.6 mm and a center thickness of 2 mm. The effective focal length (EFL) of this lens is -39.7 mm, indicating its double-concave nature. The first radius of curvature (R1) is -41.52 mm, while the second radius (R2) is 41.52 mm, further emphasizing its concave-concave geometry. The back focal length (BFL) is -40.3 mm.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens is coated with Opt IR2 on both the front and back surfaces, enhancing its performance within the specified wavelength range.
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