62-494 25 mm Dia. N-BAF10/N-SF10 Negative Achromatic Doublet; EFL=-100mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -100 mm
- R1
- -70.57 mm
- R2
- 45.27 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7336618876174243
- λ
- 550 nm
- B1
- 1.62153902
- C1
- 0.0122241457 μm2
- B2
- 0.256287842
- C2
- 0.0595736775 μm2
- B3
- 1.64447552
- C3
- 147.468793 μm2
62-494 25 mm Dia. N-BAF10/N-SF10 Negative Achromatic Doublet; EFL=-100mm VIS 0° 425-675nm
The 62-494 is a high-quality negative achromatic doublet lens, boasting a 25 mm diameter and a focal length of -100mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm.
Manufactured by Edmund Optics, this lens is a multiplet, meaning it is composed of multiple optical elements. The first element is made from N-BAF10 glass, a Schott product, while the second element is made from N-SF10 glass, also a Schott product. This combination of materials helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.
The lens features a standard coating on both the front and back surfaces, specifically the "edm vis-0 std curve" coating. This coating helps to reduce reflection and increase transmission, improving the overall performance of the lens.
The geometry of the lens is carefully designed for optimal performance. The edge thickness is 5.81mm, while the center thickness is 2mm. The lens also features a curvature radius of -70.57mm on the first surface, 45.27mm on the second surface, and 412.67mm on the third surface. The inner radius is 0mm, and the outer radius is also 0mm.
