LB1409-B N-BK7 Bi-Convex Lens; Dia:1 in; f=1000.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 1000 mm
- BFL
- 999.3 mm
- R1
- 1029.8 mm
- R2
- -1029.8 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LB1409-B N-BK7 Bi-Convex Lens; Dia:1 in; f=1000.0 mm ARC 650-1050nm
The LB1409-B N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of optical equipment. This lens, with a diameter of 1 inch, is designed for use in a wide range of applications, particularly where precise focusing and beam shaping are required.
The lens is made from N-BK7, a popular borosilicate glass known for its excellent optical properties. It features a bi-convex geometry, meaning it has two spherical surfaces that are both convex, or outwardly curved. This design allows for efficient light transmission and minimal spherical aberration.
The LB1409-B has a focal length of 1000.0 mm, as indicated by its 'efl' value. This long focal length makes it suitable for applications requiring a narrow, highly focused beam of light. The lens's thickness varies from 2 mm at the edge to 2.2 mm at the center, providing structural rigidity while minimizing optical distortion.
The lens is coated with THo BBAR, a broadband anti-reflection coating that enhances its light transmission capabilities across the 650-1050 nm spectral range. This coating reduces surface reflections, thereby improving the lens's overall efficiency and performance.