22-994 15mm Dia. N-SF6 Precision Aspheric Lens; EFL=18.75mm; NA=0.4 SWIR-Plus 900-1700nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 18.75 mm
- BFL
- 14.32 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
22-994 15mm Dia. N-SF6 Precision Aspheric Lens; EFL=18.75mm; NA=0.4 SWIR-Plus 900-1700nm
This is the 22-994 model from Edmund Optics, a high-precision aspheric lens with a 15mm diameter and a numerical aperture (NA) of 0.4. The lens is designed for use in the shortwave infrared (SWIR) region, specifically between 900 and 1700nm.
The lens is made from N-SF6 Schott, a material known for its excellent transmission properties in the SWIR region. It has an effective focal length (EFL) of 18.75mm, making it suitable for a variety of imaging applications. The lens also features a high-quality SWIR-Plus coating on both the front and back surfaces, which enhances its transmission capabilities and protects it from environmental damage.
The geometry of the lens is carefully designed to optimize its performance. It has an inner radius of 0mm and an outer radius of 0mm, with a thickness at the edge of 6.1mm. The thickness at the center is 8mm, and the lens has a base shape of circular. The aspheric design of the lens helps to reduce spherical aberration and distortion, resulting in improved image quality.
The lens has a k1 value of 0.0204531 and a k2 value of 0, indicating a high degree of curvature. The front surface of the lens has an e front value of -2.464272e-05, an f front value of -7.747754e-08, a g front value of -4.303751e-10, and an h front value of -8.575912e-16. The back surface of the lens has a j front value of 0 and an l front value of 0.
