48-937 12mm Dia. x -18mm FL; MgF2 Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- -18 mm
- BFL
- -18.65 mm
- R1
- -18.94 mm
- R2
- 18.94 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
48-937 12mm Dia. x -18mm FL; MgF2 Coated; Double-Concave Lens 400-700nm
The 48-937 is a double-concave lens with a diameter of 12mm and a focal length of -18mm, making it a negatively powered lens. This lens is sourced from Edmund Optics, a reputable vendor known for its high-quality optical components. The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility.
The lens features a double-concave geometry, meaning it has two concave surfaces. This design is often used to spread out or diverge light rays, making it suitable for applications such as beam expansion or collimation. The lens has a central thickness of 2mm and an edge thickness of 3.76mm, providing robustness and durability.
The 48-937 lens is coated with MgF2, a broadband anti-reflection coating that reduces surface reflections and increases transmission. This coating is standard across both the front and back surfaces, ensuring optimal performance across the visible spectrum (400-700nm). The coating is applied using a standard curve, ensuring consistent and reliable performance.
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