48-689 12mm Dia. x -24mm 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
- -24 mm
- BFL
- -24.65 mm
- R1
- -25.14 mm
- R2
- 25.14 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
48-689 12mm Dia. x -24mm FL; MgF2 Coated; Double-Concave Lens 400-700nm
The 48-689 is a double-concave lens with a diameter of 12mm and a focal length of -24mm, making it a negatively powered lens. This lens is sourced from Edmund Optics, a reputable vendor known for its high-quality optical elements. 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 an inner radius of 0mm and an outer radius of 0mm, indicating a symmetrical design.
The 48-689 lens is coated with MgF2, a type of anti-reflective coating. This coating reduces reflective losses at the air-to-glass surface, improving the lens's transmission and overall optical performance. The coating is standard, ensuring a consistent and reliable performance.
The lens is designed to operate within the wavelength range of 400-700nm, making it suitable for a wide range of applications, including but not limited to, visible light imaging, machine vision, and optical metrology. The lens's geometry and coating are optimized for a central wavelength of 587.6nm, which is the peak wavelength of the visible spectrum.
