47-725 15 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=11.25mm; NA=0.66 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 11.25 mm
- BFL
- 6.85 mm
- R1
- 6.63 mm
- R2
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
47-725 15 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=11.25mm; NA=0.66 Uncoated
The 47-725 is a high-precision aspheric lens offered by Edmund Optics. This lens, with a catalog number 47-725, is made from L-BAL35 material, a product of Ohara. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties.
The lens has a base shape of a circle and a diameter of 15 mm. The edge thickness of the lens is 1.94 mm, and it has an effective focal length (EFL) of 11.25 mm. The lens's numerical aperture (NA) is 0.66, indicating a wide acceptance angle and high light-gathering capability.
The lens's geometry is defined by several parameters. The inner radius is 0, and the outer radius is also 0, suggesting a symmetrical design. The lens's front surface has a radius of curvature (R1) of 6.628 mm, while the back surface (R2) is flat. The back focal length (BFL) is 6.85 mm. The center thickness of the lens is 7 mm.
The lens's aspheric surface is defined by a conic constant (K1) of -1.076527. This value indicates a mild asphericity, which helps to correct spherical aberration and improve the lens's optical performance. The lens's front surface has a decentering of 0.000239604 mm, a figure error of 6.41e-07 mm, a sagittude error of 7.69e-09 mm, and a tangential error of -6.48e-11 mm.
