16-956 20mm Dia. N-SF6 Precision Aspheric Lens; EFL=12.5mm; NA=0.8 VIS-EXT Plus 350-700nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 12.5 mm
- BFL
- 6.68 mm
- R1
- 10.07 mm
- R2
Material
- Name
- N-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.8051741184501493
- λ
- 587.6 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
16-956 20mm Dia. N-SF6 Precision Aspheric Lens; EFL=12.5mm; NA=0.8 VIS-EXT Plus 350-700nm
The 16-956 is a high-precision aspheric lens offered by Edmund Optics, designed for use within the visible light spectrum, specifically between 350 and 700nm. This lens boasts a 20mm diameter and a numerical aperture (NA) of 0.8, making it a versatile choice for a variety of optical applications.
The lens is crafted from N-SF6 Schott glass, a material known for its excellent optical properties and durability. The aspheric design of the lens helps to reduce spherical aberration, a common issue in optical systems, resulting in improved image quality and resolution.
The geometry of the lens includes an inner radius of 0mm, an outer radius of 0mm, a thickness at the edge of 5.01mm, and a thickness at the center of 10.5mm. The effective focal length (EFL) is 12.5mm, and the back focal length (BFL) is 6.68mm. The lens features a high refractive index (R1) of 10.065mm and a conic constant (K1) of -1.206658.
The lens is coated with Edmund Optics' VIS-EXT Plus coating, which is designed to enhance transmission within the specified wavelength range. This coating is applied to both the front and back surfaces of the lens, ensuring optimal performance and longevity.
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