SLB-50B-70NIR1 50.0 mm Dia. x -69.5 mm FL; Coated; Double-Concave Lens 633-1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- -69.5 mm
- BFL
- -70.5 mm
- R1
- -72.66 mm
- R2
- 72.66 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-50B-70NIR1 50.0 mm Dia. x -69.5 mm FL; Coated; Double-Concave Lens 633-1064nm
OptoSigma presents the SLB-50B-70NIR1, a high-quality double-concave lens designed for use within the wavelength range of 633-1064nm. This lens boasts a 50.0 mm diameter and a focal length of -69.5 mm, making it suitable for a wide range of optical applications.
The lens is made from the renowned n-BK7 material by Schott, ensuring excellent optical performance and durability. The base shape of this lens is circular, and it features a spherical geometry with inner and outer radii of 0 mm. The edge thickness measures 11.9 mm, while the center thickness is a mere 3 mm, minimizing material while maintaining structural integrity.
The SLB-50B-70NIR1 comes equipped with an anti-reflective coating (AR) on both the front and back surfaces, specifically the opt IR1 coating. This coating enhances the lens's performance by reducing unwanted reflections and increasing transmission within the specified wavelength range.
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