48-699 6mm Dia. x -12mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- -12 mm
- BFL
- -12.33 mm
- R1
- -12.57 mm
- R2
- 12.57 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
48-699 6mm Dia. x -12mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm
The 48-699 is a double-concave lens with a 6mm diameter and a focal length of -12mm, 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 designed for use in the visible to near-infrared spectrum, spanning 400-1000nm, making it suitable for a wide range of applications.
The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and high transmittance in the visible spectrum. The lens features a double-concave geometry, with radii of curvature of -12.57mm and 12.57mm for the front and back surfaces, respectively. This geometry results in a back focal length of -12.33mm.
The lens is coated with a VIS-NIR coating, specifically the edm visnir0sp2002000 coating, on both the front and back surfaces. This coating is designed to enhance the lens's performance in the visible to near-infrared spectrum, reducing reflection and increasing transmission.
The lens has a thickness of 1.59mm at the edge and 1mm at the center, providing a robust and durable structure. The lens is circular in shape, making it compatible with various optical systems.
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