L-BCC042 20 mm Dia. Double-Concave Lens; EFL=-20mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Ross Optical
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -20 mm
- R1
- -21.77 mm
- R2
- 21.77 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-BCC042 20 mm Dia. Double-Concave Lens; EFL=-20mm Uncoated
The L-BCC042 is a 20 mm diameter Double-Concave Spherical Lens, featuring a negative focal length (EFL) of -20mm. This lens is sourced from Ross Optical, a reputable vendor known for their high-quality optical elements.
The lens is designed with a base shape of Circular, and its geometry includes a thickness edge of 6.8mm and a thickness center of 2mm. The inner and outer radii are both 0, indicating a symmetrical design. The curvature radii (R1 and R2) are -21.77191462mm and 21.77191462mm respectively, which are equal in magnitude but opposite in sign, further emphasizing the double-concave nature of the lens.
The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility. The wavelength for this lens is 587.6nm, which is within the visible light spectrum.
Notably, this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflections, increasing transmission, or providing other desirable optical properties. However, this lens has been left uncoated, which may be suitable for certain applications where specific coating characteristics are not required.
The lens data is valid and indicates that it is currently in stock, making it readily available for your optical design needs.
