69-858 12.5 mm Dia. N-SF5 Precision Aspheric Lens; EFL=9.5mm; NA=0.66 BBAR 425-675nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 9.5 mm
- BFL
- 6.51 mm
- R1
- 6.39 mm
- R2
Material
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6727030184452947
- λ
- 587.6 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
69-858 12.5 mm Dia. N-SF5 Precision Aspheric Lens; EFL=9.5mm; NA=0.66 BBAR 425-675nm
This is the 69-858 model from Edmund Optics, a high-precision 12.5 mm diameter Aspheric Lens made from N-SF5 Schott material. The lens boasts a 0.66 numerical aperture (NA) and features Broadband Anti-Reflection (BBAR) coating for the 425-675nm wavelength range, ensuring optimal light transmission and minimal loss due to reflection.
The lens's geometry is meticulously designed with an inner radius of 0 and an outer radius of 0, providing a perfect balance for its application. The effective focal length (EFL) is 9.5mm, and the back focal length (BFL) is 6.51mm, making it suitable for various optical systems.
The lens's front and back surfaces are coated with EDMBBAR 425-675, providing excellent anti-reflection properties. The lens's shape is aspheric, which helps reduce spherical aberration and provides better image quality compared to traditional spherical lenses.
The lens's thickness at the edge is 1.6mm, and the center thickness is 5mm, providing structural rigidity and minimizing optical distortions. The lens's front and back surfaces have a very low eccentricity (e), flatness (f), and curvature (g and h), ensuring excellent image quality and minimal distortions.
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