66-331 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 600-1050nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- 22.5 mm
- BFL
- 13.73 mm
- R1
- 5.73 mm
- R2
- 300 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
66-331 30 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=22.5mm; NA=0.66 BBAR 600-1050nm
The 66-331 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 30 mm diameter and a numerical aperture (NA) of 0.66, making it suitable for a wide range of optical applications. The lens is made from L-BAL35, a material from Ohara, which is known for its excellent optical properties.
The lens has an effective focal length (EFL) of 22.5mm, which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This EFL makes the lens suitable for use in moderate to high magnification systems.
The lens's geometry includes an inner radius of 0mm, an outer radius of 0mm, and a thickness at the edge of 4.57mm. The thickness at the center is 14.4mm, and the lens has a front diameter (d front) of 0mm. The lens's front and back surfaces are coated with BBAR 600-1050, a coating that reduces reflection and increases transmission in the 600-1050nm wavelength range.
The lens's shape is aspheric, which means it has a non-spherical surface. This design helps to reduce spherical aberration, a common optical problem that can degrade image quality. The lens's aspheric surface is defined by its radius of curvature (r1) of 5.731mm and its conic constant (k1) of -0.62504.
