67-659 30mm Dia. x 30mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- 30 mm
- BFL
- 28.12 mm
- R1
- 45.61 mm
- R2
- -45.61 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
67-659 30mm Dia. x 30mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-659 is a high-quality double-convex lens, boasting a 30mm diameter and a focal length of 30mm, sourced from the renowned optical vendor, Edmund Optics. This lens is specifically designed for use within the near-infrared (NIR) spectrum, covering the wavelength range of 750-1550nm, making it an ideal choice for applications requiring superior performance in this spectral region.
The lens features a sophisticated NIR II coating on both the front and back surfaces, ensuring optimal transmission and minimal reflection across the NIR spectrum. This coating is applied using Edmund Optics' standard curve, which guarantees consistent performance and high-quality results.
The 67-659 lens is constructed from n-SF11 Schott glass, a material well-known for its excellent optical properties within the NIR spectrum. This glass type, combined with the lens's double-convex geometry, provides an effective focal length (EFL) of 30mm and a back focal length (BFL) of 28.12mm. The lens has an outer radius of 0mm and an inner radius of 0mm, with a center thickness of 6.5mm and an edge thickness of 1.43mm.
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