66-320 20 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=20mm; NA=0.5 BBAR 425-675nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 20 mm
- BFL
- 15.19 mm
- R1
- 12.34 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
66-320 20 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=20mm; NA=0.5 BBAR 425-675nm
The 66-320 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 20 mm diameter and a numerical aperture (NA) of 0.5, 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 is designed to operate at a wavelength of 587.6 nm, and it features a focal length (EFL) of 20 mm. The aspheric design of the lens helps to reduce spherical aberration, thereby improving the overall image quality. The lens has a front inner radius of 0 mm and a back inner radius of 0 mm. The thickness at the edge of the lens is 3.44 mm, and the thickness at the center is 8 mm.
The lens is coated with BBAR 425-675, a broadband anti-reflection coating that enhances the transmission of light in the visible spectrum (425-675 nm). This coating reduces surface reflections, thereby improving the overall efficiency of the optical system.
The lens is available for purchase through the Edmund Optics website, and it is currently in stock. The catalog number for this lens is 66-320.
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