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66-321 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 425-675nm

66-321 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 425-675nm

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

66-321 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 425-675nm

The 66-321 is a high-precision aspheric lens offered by Edmund Optics, featuring a 30 mm diameter and a numerical aperture of 0.66. This lens is designed for use in the visible spectrum, with a wavelength of 587.6 nm.

The lens is made from L-BAL35, a material from Ohara, which is known for its excellent optical properties. The aspheric design of the lens helps to reduce spherical aberration, providing sharper images than spherical lenses.

The lens has an effective focal length (EFL) of 22.5 mm, which is the distance over which the lens focuses light. This, combined with the high numerical aperture, allows the lens to capture a large amount of light, making it suitable for use in low-light conditions.

The lens is coated with BBAR (Broadband Anti-Reflection) coating, which reduces reflection and increases transmission in the 425-675 nm range. This coating helps to improve the contrast and clarity of the images captured by the lens.

The lens has a thickness of 4.57 mm at the edge and 14.4 mm at the center. The front and back surfaces of the lens are coated with the same BBAR coating, ensuring high transmission and low reflection from both sides.

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