LB1494-C N-BK7 Bi-Convex Lens; Dia:9.0 mm; f=12.0 mm ARC 1050-1700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 750 mm
- BFL
- 10.7 mm
- R1
- 11.7 mm
- R2
- -11.7 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LB1494-C N-BK7 Bi-Convex Lens; Dia:9.0 mm; f=12.0 mm ARC 1050-1700nm
The LB1494-C is a high-quality bi-convex lens from Thorlabs, designed with a diameter of 9.0 mm and a focal length of 12.0 mm. This lens is fabricated from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for various applications.
The lens features an anti-reflection coating, optimized for the wavelength range of 1050-1700nm, which significantly reduces surface reflections, thereby enhancing transmission and improving overall system performance. The front and back surfaces of the lens are coated with the same AR coating, ensuring consistent performance across the entire optical path.
The geometry of the lens includes a thickness of 1.8 mm at the edge and 4.3 mm at the center, with radii of curvature of 11.7 mm for the first surface and -11.7 mm for the second surface. The back focal length is 10.7 mm, and the effective focal length is 750 mm. The lens is spherical in shape, providing a smooth and consistent optical path.
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