17-419 25mm Dia. N-SF6 Precision NIR Aspheric Lens; EFL=25mm; NA=0.5 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 25 mm
- BFL
- 18.97 mm
- R1
- 19.07 mm
- R2
Material
- Name
- N-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7627040319398362
- λ
- 1550 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
17-419 25mm Dia. N-SF6 Precision NIR Aspheric Lens; EFL=25mm; NA=0.5 Uncoated
The 17-419 is a high-precision NIR (Near-InfraRed) Aspheric Lens, designed for use in the 1550nm wavelength range. This lens is manufactured by Edmund Optics, a leading provider of optical components.
The lens features a base shape of a circle, with a diameter of 25mm. The lens is made from N-SF6 Schott, a high-quality optical glass known for its excellent transmission properties in the NIR spectrum. The lens has a high numerical aperture (NA) of 0.5, which allows for a wide angle of view and high light-gathering capability.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. However, this also means that the lens is less susceptible to damage from environmental factors, making it suitable for use in harsh environments.
The lens has an effective focal length (EFL) of 25mm, which is the distance from the lens's optical center to the point where the lens focuses light. The lens also has a thickness of 4.25mm at the edge and 8.5mm at the center.
The lens's geometry is defined by its inner and outer radii, both of which are 0 in this case. The lens also has a conic constant of -1, which is a measure of the lens's asphericity.
