67-254 40 mm Dia. N-SF5 Precision Aspheric Lens; EFL=25mm; NA=0.8 BBAR 425-675nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 25 mm
- BFL
- 15.73 mm
- R1
- 16.82 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
67-254 40 mm Dia. N-SF5 Precision Aspheric Lens; EFL=25mm; NA=0.8 BBAR 425-675nm
This is the 67-254 model from Edmund Optics, a 40 mm diameter N-SF5 precision aspheric lens with an effective focal length (EFL) of 25mm and a numerical aperture (NA) of 0.8. The lens is coated with BBAR 425-675nm, ensuring high transmission and low reflection across the visible spectrum.
The lens is made of N-SF5 Schott, a high-refractive-index glass that is often used in high-performance optical systems. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses, thereby improving the overall image quality.
The lens has a central thickness of 15.5mm and an edge thickness of 1.49mm. The front and back surfaces of the lens are coated with BBAR 425-675nm, which provides broadband anti-reflection coating for wavelengths from 425nm to 675nm. This coating helps to increase the transmission of light through the lens and reduce surface reflections.
The lens is available from the Edmund Optics website, and the link provided is valid and indicates that the lens is in stock. This lens is a great choice for applications that require high-quality imaging and broadband anti-reflection coating.
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