49-542 6mm Dia. x -12mm FL; NIR I Coated; Double-Concave Lens 600-1050nm
- 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
49-542 6mm Dia. x -12mm FL; NIR I Coated; Double-Concave Lens 600-1050nm
The 49-542 is a double-concave lens with a diameter of 6mm 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 within the near-infrared (NIR) spectrum, specifically between 600-1050nm, making it suitable for a variety of applications within this range.
The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens features a standard NIR I coating on both the front and back surfaces, which is designed to enhance transmission within the NIR spectrum. This coating helps to reduce reflection and increase the overall efficiency of the lens.
The geometry of the lens is characterized by its inner and outer radii, both of which are 0mm in this case. The lens has a thickness of 1.59mm at the edge and 1mm at the center. The back focal length (BFL) is -12.33mm, and the effective focal length (EFL) is -12mm. The first and second radii of curvature (R1 and R2) are -12.57mm and 12.57mm, respectively.