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87-981 10mm Dia. UVFS Aspheric Lens; EFL=8mm; NA=0.63 UV-VIS 250-700nm

87-981 10mm Dia. UVFS Aspheric Lens; EFL=8mm; NA=0.63 UV-VIS 250-700nm

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

Properties

Shape
Circular
Diameter
10 mm
EFL
8 mm
BFL
2.52 mm
R1
3.67 mm
R2

Material

Name
HPFS7980
Dispersion Equation
Sellmeier
n (λ)
1.4584656081538023
λ
587.6 nm
B1
0.683740494
C1
0.00460352869 μm2
B2
0.420323613
C2
0.0133968856 μm2
B3
0.58502748
C3
64.4932732 μm2

87-981 10mm Dia. UVFS Aspheric Lens; EFL=8mm; NA=0.63 UV-VIS 250-700nm

The 87-981 is a high-performance aspheric lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 10mm, is constructed from UV-grade fused silica, ensuring durability and resistance to environmental factors. The lens's design includes a high numerical aperture (NA) of 0.63, which allows for a wide angle of incidence and increased light-gathering capability.

The lens's effective focal length (EFL) is 8mm, making it suitable for applications requiring a short focal length. The lens's geometry is defined by its inner and outer radii, both of which are 0 in this case, indicating a flat surface. The lens's thickness at the edge is 3.05mm, while its center thickness is 8mm.

The 87-981 lens features a UV-VIS coating, which is standard for Edmund Optics. This coating, applied to both the front and back surfaces, enhances the lens's transmission in the UV and visible spectrum (250-700nm). The coating is designed to reduce surface reflections, thereby increasing the lens's overall efficiency.

The lens's shape is aspheric, which means it has a non-spherical surface. This design helps to reduce spherical aberration, a common optical issue that can degrade image quality. The aspheric surface is defined by its conic constant (k1) of -0.6304671 and its aspheric coefficient (r2) of 0.

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