67-261 40 mm Dia. N-SF5 Precision Aspheric Lens; EFL=25mm; NA=0.8 BBAR 600-1050nm
- 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
67-261 40 mm Dia. N-SF5 Precision Aspheric Lens; EFL=25mm; NA=0.8 BBAR 600-1050nm
The 67-261 is a high-precision aspheric lens offered by Edmund Optics, boasting a 40 mm diameter and a numerical aperture (NA) of 0.8. This lens is designed for use in the near-infrared (NIR) region, specifically at a wavelength of 587.6 nm.
The lens is made from N-SF5 Schott, a high-refractive index glass that is known for its excellent optical properties. The aspheric design of the lens helps to reduce spherical aberration, providing superior image quality compared to traditional spherical lenses.
The lens features an effective focal length (EFL) of 25 mm, making it suitable for a wide range of applications. The front and back surfaces of the lens are coated with BBAR 600-1050, a broadband anti-reflection coating that enhances transmission in the 600-1050 nm range.
The lens has a center thickness of 15.5 mm and an edge thickness of 1.49 mm. The front and back surfaces of the lens have radii of curvature of 16.818 mm and 0 mm, respectively. The lens also features a high NA of 0.8, which allows for a wide angle of view and high light-gathering capability.
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