66-310 20 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=20mm; NA=0.5 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 20 mm
- BFL
- 15.19 mm
- R1
- 9.08 mm
- R2
- 200 mm
Material
- Name
- L-BAL35
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5891276536746055
- λ
- 587.6 nm
- B1
- 1.1626263
- C1
- 0.0125957437 μm2
- B2
- 0.325661051
- C2
- -0.0032691105 μm2
- B3
- 1.35132486
- C3
- 119.214596 μm2
66-310 20 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=20mm; NA=0.5 Uncoated
The 66-310 is a high-precision aspheric lens offered by Edmund Optics. This lens, with a catalog number 66-310, is designed for use with a wavelength of 587.6 nm. The lens is made from L-BAL35, a material from Ohara, and features a base shape of a circle.
The lens has a diameter of 20 mm and a thickness at the edge of 3.44 mm. The effective focal length (EFL) of this lens is 20 mm, and its numerical aperture (NA) is 0.5. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties.
The lens's geometry is defined by its inner radius, which is 0, and its outer radius, also 0. The thickness at the center of the lens is 8 mm. The lens's first radius of curvature (R1) is 9.082 mm, and its second radius of curvature (R2) is 200 mm. The back focal length (BFL) of the lens is 15.19 mm.
The lens's shape is aspheric, which means it has a shape that deviates from a simple sphere. This design allows for improved optical performance compared to traditional spherical lenses. The lens does not have any coating, as indicated in the 'coating' parameter.
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