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13-497 12.5mm Dia. S-LAH64 NIR Aspheric Lens; EFL=10mm; NA=0.63 Uncoated

13-497 12.5mm Dia. S-LAH64 NIR Aspheric Lens; EFL=10mm; NA=0.63 Uncoated

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

Properties

Shape
Circular
Diameter
12.5 mm
EFL
10 mm
BFL
7.61 mm
R1
7.77 mm
R2

Material

Name
S-LAH64
Dispersion Equation
Sellmeier
n (λ)
1.7768959986651893
λ
780 nm
B1
1.83021453
C1
0.0090482329 μm2
B2
0.29156359
C2
0.0330756689 μm2
B3
1.28544024
C3
89.3675501 μm2

13-497 12.5mm Dia. S-LAH64 NIR Aspheric Lens; EFL=10mm; NA=0.63 Uncoated

This is the 13-497 model from Edmund Optics, a 12.5mm diameter, uncoated NIR (Near-InfraRed) precision aspheric lens designed for use in the 780nm wavelength range. The lens is made from S-LAH64 material, a high-refractive index glass developed by Ohara, which provides excellent optical performance.

The lens features a high numerical aperture (NA) of 0.63, indicating a wide angle of acceptance for incoming light. This makes it suitable for applications where high light-gathering capability is required. The effective focal length (EFL) is 10mm, which, combined with the lens's high NA, results in a compact, high-performance optical system.

The lens's aspheric design is a significant feature. Unlike spherical lenses, which can suffer from spherical aberration, aspheric lenses can focus light more accurately over a wider range of wavelengths and angles. This makes them ideal for applications that require high-precision imaging or beam shaping.

The lens is uncoated, meaning it does not have any anti-reflective coatings. While this can result in higher reflective losses at the lens surfaces, it also means the lens is less susceptible to damage from environmental factors, making it suitable for use in harsh environments.

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