SLB-25-150NIR2 25.0 mm Dia. x -150.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -150 mm
- BFL
- -151.3 mm
- R1
- -77.85 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-25-150NIR2 25.0 mm Dia. x -150.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-25-150NIR2 is a Plano-Concave Spherical Lens, part of OptoSigma's extensive catalog of optical elements. This lens, with a diameter of 25.0 mm, is designed for use in the near-infrared spectrum, specifically between 750 and 1550 nanometers.
The lens's geometry is characterized by its thickness at the edge, which is 3.0 mm, and its center thickness, which is 2.0 mm. The effective focal length (EFL) is -150.0 mm, indicating a concave shape. The first radius of curvature (R1) is -77.85 mm, and the back focal length (BFL) is -151.3 mm. The lens does not have an inner or outer radius.
The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and wide transparency range. The lens is coated with Opt IR2, a coating specifically designed for the near-infrared spectrum, enhancing its performance in this range.
The lens's coating is applied to both the front and back surfaces. This coating helps reduce reflection and increase transmission, making it ideal for use in high-precision optical systems.
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