16-981 25mm Dia. N-SF6 Precision Aspheric Lens; EFL=18.75mm; NA=0.66 NIR-Plus 600-1050nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 18.75 mm
- BFL
- 11.27 mm
- R1
- 15.1 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
16-981 25mm Dia. N-SF6 Precision Aspheric Lens; EFL=18.75mm; NA=0.66 NIR-Plus 600-1050nm
The 16-981 is a high-precision aspheric lens, boasting a 25mm diameter and a numerical aperture (NA) of 0.66. This lens is designed for use in the near-infrared spectrum, specifically for wavelengths between 600 and 1050nm.
The lens is crafted from N-SF6 Schott, a high-quality optical material known for its excellent transmission properties in the near-infrared region. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses, resulting in improved image quality and resolution.
The lens features an effective focal length (EFL) of 18.75mm, making it suitable for a variety of optical applications. The front and back surfaces of the lens are coated with Edmund Optics' NIR-Plus 600-1050nm coating, which enhances its transmission capabilities within the specified wavelength range.
The lens has a thickness of 7.97mm at the edge and 13.5mm at the center. The inner and outer radii are not specified, indicating that they are not critical to the lens's performance. The front and back focal lengths are 2.137395e-05mm and 2.276332e-09mm, respectively, while the conic constant (k1) is -1.169836.
