L-BCC020 12.5 mm Dia. Double-Concave Lens; EFL=-75mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Ross Optical
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- -75 mm
- R1
- -77.88 mm
- R2
- 77.88 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
L-BCC020 12.5 mm Dia. Double-Concave Lens; EFL=-75mm Uncoated
The L-BCC020 is a spherical lens with a base shape of a circle, sourced from the renowned optical vendor, Ross Optical. This lens falls under the category of a bi-concave lens, characterized by its double-concave structure. The lens has a diameter of 12.5 mm, making it suitable for applications requiring compact optical components.
The lens's geometry is intricately designed with a thickness of 2.1 mm at the edge and 1.5 mm at the center. The effective focal length (EFL) of this lens is -75 mm, indicating that it is a diverging lens, which spreads out light rays. The first radius of curvature (R1) is -77.87611721 mm, and the second radius of curvature (R2) is 77.87611721 mm, further emphasizing its double-concave nature.
The L-BCC020 is made from the high-quality material N-BK7 Schott, a borosilicate glass known for its excellent optical properties. The wavelength for this lens is 587.6 nm. Notably, this lens does not come with any coating, which may be a consideration for users who require specific coatings for their applications.
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