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66-331 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 600-1050nm

66-331 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 600-1050nm

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

Properties

Shape
Circular
Diameter
30 mm
EFL
22.5 mm
BFL
13.73 mm
R1
5.73 mm
R2
300 mm

Material

Name
L-BAL35
Dispersion Equation
Sellmeier
n (λ)
1.5891276536746055
λ
587.6 nm
B1
1.1626263
C1
0.0125957437 μm2
B2
0.325661051
C2
-0.0032691105 μm2
B3
1.35132486
C3
119.214596 μm2

66-331 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 600-1050nm

The 66-331 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 30 mm diameter and a numerical aperture (NA) of 0.66, making it suitable for a wide range of optical applications. The lens is made from L-BAL35, a material from Ohara, which is known for its excellent optical properties.

The lens has an effective focal length (EFL) of 22.5mm, which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This EFL makes the lens suitable for use in moderate to high magnification systems.

The lens's geometry includes an inner radius of 0mm, an outer radius of 0mm, and a thickness at the edge of 4.57mm. The thickness at the center is 14.4mm, and the lens has a front diameter (d front) of 0mm. The lens's front and back surfaces are coated with BBAR 600-1050, a coating that reduces reflection and increases transmission in the 600-1050nm wavelength range.

The lens's shape is aspheric, which means it has a non-spherical surface. This design helps to reduce spherical aberration, a common optical problem that can degrade image quality. The lens's aspheric surface is defined by its radius of curvature (r1) of 5.731mm and its conic constant (k1) of -0.62504.

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