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AL75150-B 75 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=150 mm; NA=0.23 AR 650-1050nm

AL75150-B 75 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=150 mm; NA=0.23 AR 650-1050nm

Type
Lens
Subtype
Aspheric Lens
Brand
Thorlabs
Product webpage
Thorlabs products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
75 mm
EFL
150 mm
R1
76.68 mm
R2

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5111833144579327
λ
780 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

AL75150-B 75 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=150 mm; NA=0.23 AR 650-1050nm

The AL75150-B is a high-precision aspheric lens, meticulously crafted by Thorlabs. This lens boasts a 75 mm diameter and is designed for use with a wavelength of 780 nm. It is constructed from n-BK7 Schott, a material renowned for its excellent optical properties.

The lens features an effective focal length (EFL) of 150 mm, making it suitable for a wide range of optical applications. The aspheric design, combined with CNC polishing, ensures high-precision performance. The lens's shape is defined by a series of radii (r1: 76.68, r2: 0), thicknesses (edge: 5.7 mm, center: 15 mm), and aspheric coefficients (k1: -0.675, a2 front: 0, a4 front: 2.7709219e-08, a6 front: 6.418186e-13, a8 front: -1.5724014e-17, a10 front: -2.7768768e-21, a12 front: -2.590162e-25, a14 front: 0, a16 front: 0).

The lens's numerical aperture (NA) is 0.23, indicating a wide acceptance angle and high light-gathering capability. The lens is coated with broadband anti-reflection (AR) coatings, optimized for the 650-1050 nm range, which minimizes surface reflections and enhances transmission.

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