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LB1199-A N-BK7 Bi-Convex Lens; Dia:2 in; f=200.0 mm ARC 350-700nm

LB1199-A N-BK7 Bi-Convex Lens; Dia:2 in; f=200.0 mm ARC 350-700nm

Type
Lens
Subtype
Spherical Lens (Convex-Convex)
Brand
Thorlabs
Product webpage
Thorlabs products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
50.8 mm
EFL
200 mm
BFL
198 mm
R1
205 mm
R2
-205 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

LB1199-A N-BK7 Bi-Convex Lens; Dia:2 in; f=200.0 mm ARC 350-700nm

The LB1199-A is a high-quality bi-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7, a popular glass type known for its excellent optical properties, and is Schott-manufactured, ensuring a high level of quality and consistency.

The lens features a diameter of 2 inches (50.8 mm) and a focal length of 200.0 mm, making it suitable for use in systems where a long focal length is required. The lens has a double-convex shape, with radii of curvature of 205 mm on both sides. This shape helps to minimize spherical aberration, ensuring that the lens delivers high-quality, distortion-free images.

The lens has a thickness of 3 mm at the edge and 6.2 mm at the center, providing rigidity and durability. The effective focal length (EFL) of the lens is 200 mm, and the back focal length (BFL) is 198 mm. The lens does not have any inner or outer radius, indicating a uniform thickness across the lens.

The lens is coated with a broadband anti-reflection coating, designed to reduce reflection across the visible spectrum (350-700 nm). This coating helps to improve transmission, reducing losses and increasing the efficiency of the optical system.

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