67-439 3.0mm Dia. x 3.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 3 mm
- EFL
- 3 mm
- BFL
- 1.88 mm
- R1
- 2.35 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
67-439 3.0mm Dia. x 3.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm
The 67-439 is a Plano-Convex lens, a type of spherical lens, with a diameter of 3mm and a focal length of 3mm. This lens is sourced from Edmund Optics, a renowned vendor in the optical industry. The lens is made from n-sf11 Schott, a high-index glass with excellent transmittance in the near-infrared (NIR) region.
The lens features a front and back coating of edm nir-ii std curve, which is specifically designed for the NIR II region, enhancing its performance in the 750-1550nm wavelength range. This coating ensures high transmission and low reflection, making it ideal for applications such as biomedical imaging, night vision, and spectral analysis.
The lens has a thickness of 1.46mm at the edge and 2mm at the center, providing a balanced profile for efficient light transmission. The inner radius is 0, indicating a flat surface on the back side of the lens, while the outer radius is also 0, suggesting a curved surface on the front side. The back focal length (BFL) is 1.88mm, which is the distance from the back surface of the lens to the focal point.
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