67-252 25 mm Dia. N-SF5 Precision Aspheric Lens; EFL=15mm; NA=0.83 BBAR 425-675nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 15 mm
- BFL
- 8.42 mm
- R1
- 10.09 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
67-252 25 mm Dia. N-SF5 Precision Aspheric Lens; EFL=15mm; NA=0.83 BBAR 425-675nm
This is the 67-252 model from Edmund Optics, a 25 mm Dia. N-SF5 Precision Aspheric Lens with an effective focal length (EFL) of 15mm and a numerical aperture (NA) of 0.83. 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, providing superior image quality. The lens has a base shape of a circle, with an inner radius of 0 and an outer radius of 0. The diameter of the lens is 25 mm, and it has a thickness of 1.64 mm at the edge and 11 mm at the center.
The coating on the lens is BBAR 425-675nm, which stands for Broadband Anti-Reflection coating. This coating is designed to reduce reflection and increase transmission across the visible spectrum, from 425nm to 675nm. The coating is applied to both the front and back surfaces of the lens.
The lens has a numerical aperture (NA) of 0.83, which is a measure of the lens' ability to gather light. A higher NA means that the lens can gather more light, which can be beneficial in low-light conditions. The lens also has an EFL of 15mm, which is the distance from the lens to the point where the light rays converge.
The lens is currently in stock and can be purchased directly from the Edmund Optics website. The catalog number for this lens is 67-252.
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