33-424 40mm Dia. x 80mm 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
- 40 mm
- EFL
- 80 mm
- BFL
- 77.32 mm
- R1
- 81.3 mm
- R2
- -81.3 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
33-424 40mm Dia. x 80mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 40mm diameter, 80mm focal length double-convex lens, designed for use in the near-infrared (NIR) spectrum, specifically between 750nm and 1550nm. The lens is sourced from Edmund Optics, a leading provider of optical components.
The lens is made from N-BK7 Schott glass, a popular choice for its high refractive index and low dispersion. This makes it ideal for imaging and beam shaping applications in the NIR spectrum. The lens features a standard NIR-II coating on both the front and back surfaces, further enhancing its performance in the NIR range.
The geometry of the lens includes a thickness of 3mm at the edge and 8mm at the center. The effective focal length (EFL) is 80mm, and the back focal length (BFL) is 77.32mm. The radii of curvature for the first and second surfaces are 81.3mm and -81.3mm, respectively. The lens has no inner or outer radius specified, indicating a uniform curvature.
This lens is a spherical lens, meaning it has a constant curvature along its surface. This design is simple yet effective, providing a high-quality image while maintaining a compact form factor. The double-convex design further enhances the lens's light-gathering capabilities, making it suitable for use in low-light conditions.
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