39-543 12.7mm Dia. x 20mm FL; Coated; ZnSe Plano-Convex Lens BBAR 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 20 mm
- R1
- 28.05 mm
Material
- Name
- ZnSe
- Dispersion Equation
- Sellmeier
- n (λ)
- 2.402780893783937
- λ
- 10600 nm
- B1
- 4.45813734
- C1
- 0.040344681 μm2
- B2
- 0.467216334
- C2
- 0.15317139 μm2
- B3
- 2.8956629
- C3
- 2221.822369 μm2
39-543 12.7mm Dia. x 20mm FL; Coated; ZnSe Plano-Convex Lens BBAR 8-12µm
The 39-543 is a 12.7mm diameter, 20mm focal length plano-convex lens, designed for use in the 8-12µm spectral range. This lens is sourced from Edmund Optics and is currently in stock.
The lens is made from ZnSe (Zinc Selenide) material, specifically the 'connolly' variant, which is known for its excellent transmission properties in the infrared spectrum. The front and back surfaces of the lens are coated with BBAR (Broadband Anti-Reflection) coating, optimized for the 8-12µm range, which reduces surface reflections and improves overall transmission.
The lens has a planar front surface and a convex rear surface, with a center thickness of 1.85mm and an edge thickness of 1.12mm. The effective focal length (EFL) of the lens is 20mm, making it suitable for a variety of applications that require a high-quality, mid-range focal length lens.
The lens is spherical in shape, with a radius of curvature (R1) of 28.05mm for the convex rear surface. The inner and outer radii are both zero, indicating a simple, single-curvature design.
For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.
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