67-649 25mm Dia. x 35mm 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
- 25 mm
- EFL
- 35 mm
- BFL
- 32.81 mm
- R1
- 35.09 mm
- R2
- -35.09 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
67-649 25mm Dia. x 35mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 25mm diameter, 35mm focal length double-convex lens, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics and is currently in stock.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent transparency in the visible and near-infrared regions. It features a standard curve coating on both the front and back surfaces, specifically the EDM NIR-II coating, which is designed to enhance performance in the NIR II range (750-1550nm).
The lens has a center thickness of 6.6mm and an edge thickness of 2mm. The front and back radii are 35.09mm and -35.09mm respectively, resulting in a back focal length of 32.81mm. The lens is spherical in shape, with no inner or outer radius specified.
This lens is suitable for a wide range of applications that require high-quality imaging in the NIR II spectrum, such as biomedical imaging, night vision, and spectral analysis.
