AL100200 100 mm Dia. N-BK7 High-Precision; CNC Polished Aspheric Lenses; EFL=200 mm; NA=0.23 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 100 mm
- EFL
- 200 mm
- R1
- 102.24 mm
- R2
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5111833144579327
- λ
- 780 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
AL100200 100 mm Dia. N-BK7 High-Precision; CNC Polished Aspheric Lenses; EFL=200 mm; NA=0.23 Uncoated
The AL100200 is a high-precision aspheric lens offered by Thorlabs, a leading vendor in the optical industry. This lens, crafted from N-BK7 Schott glass, boasts a diameter of 100 mm and an effective focal length of 200 mm, making it suitable for a wide range of optical applications.
The lens's aspheric design, achieved through CNC polishing, ensures high-quality imaging with minimal spherical aberration. The base shape is circular, and the lens features a center thickness of 19 mm and an edge thickness of 6.5 mm. The lens's numerical aperture (NA) is 0.23, indicating a wide acceptance angle for light rays, which can be beneficial in various imaging scenarios.
The lens's geometry includes a range of parameters that define its curvature and thickness distribution. The front surface has a conic constant of -1 and aspheric coefficients up to the 8th order, indicating a high degree of curvature control. The back surface is planar.
Notably, this lens is uncoated. While coatings can enhance transmission and reduce reflection, an uncoated lens can be advantageous in certain applications where specific reflectance properties are desired or where cost is a significant factor.
