Perfect N-BK7 Plano-Concave Lens; Dia:25 mm; f=-75.0 mm Perfect Transmission
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- 3DOptix
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -75 mm
- BFL
- -77.3 mm
- R1
- -38.6 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167817367777034
- λ
- 588 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Perfect N-BK7 Plano-Concave Lens; Dia:25 mm; f=-75.0 mm Perfect Transmission
This is a Perfect N-BK7 Plano-Concave Lens, a high-quality optical component sourced from the reputable vendor, 3DOptix. The lens, which has a diameter of 25 mm, is designed with a plano-concave geometry, featuring a flat surface and a curved surface that faces inward. This specific lens has an effective focal length (EFL) of -75 mm, making it suitable for applications that require a negative focal length.
The lens is made from N-BK7, a popular glass type in the optical industry, known for its excellent optical properties. The base shape of the lens is circular, and it has a thickness of 3.5 mm at the edge and 5.6 mm at the center. The lens's front and back surfaces are coated with a 3DO per transmission coating, ensuring high transmission and minimal reflection.
The lens's geometry includes a radius of curvature (R1) of -38.6 mm and a back focal length (BFL) of -77.3 mm. The lens does not have an inner radius, and the outer radius is also 0, indicating a simple plano-concave design.
This lens is designed to work at a wavelength of 588 nm, making it suitable for applications that use this specific wavelength. The lens's spherical shape ensures excellent image quality and low distortion.