L-BCC012 12.5 mm Dia. Double-Concave Lens; EFL=-20mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Ross Optical
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- -20 mm
- R1
- -21.25 mm
- R2
- 21.25 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-BCC012 12.5 mm Dia. Double-Concave Lens; EFL=-20mm Uncoated
The L-BCC012 is a spherical lens with a base shape of circular, sourced from the renowned vendor Ross Optical. This lens falls under the category of a bi-concave lens, which is a type of spherical lens featuring two concave surfaces. The lens has a diameter of 12.5 mm and a thickness of 3.5 mm at the edge, reducing to 1.5 mm at the center.
The effective focal length (EFL) of this lens is -20 mm, indicating that it is a diverging lens, causing parallel rays to spread out. The first radius of curvature (R1) is -21.25198301 mm, and the second radius of curvature (R2) is 21.25198301 mm. The inner radius is 0 mm, and the outer radius is also 0 mm.
This lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility. The wavelength for this lens is 587.6 nm. The lens does not come with any coating, as indicated in the item data.