47-731 25 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=31.25mm; NA=0.4 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 31.25 mm
- BFL
- 27.16 mm
- R1
- 18.41 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
47-731 25 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=31.25mm; NA=0.4 Uncoated
The 47-731 is a high-precision aspheric lens offered by Edmund Optics. This lens, with a catalog number 47-731, is made from L-BAL35 material, a unique type of optical glass developed by 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 25 mm. The edge thickness of the lens is 2.04 mm, and it has an effective focal length (EFL) of 31.25 mm. The lens's first radius of curvature (R1) is 18.41 mm, and it does not have a second radius of curvature (R2), indicating a unique aspheric design.
The lens has a numerical aperture (NA) of 0.4, which is a measure of its light-gathering ability. The back focal length (BFL) of the lens is 27.16 mm, and the center thickness is 6.5 mm. The lens's conic constant (k1) is -1.607913, indicating a relatively steep aspheric surface.
The lens is designed to operate at a wavelength of 587.6 nm. It is in stock and available for immediate purchase. The lens's web links are provided for further details and specifications.
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