SLB-50-250NIR2 50.0 mm Dia. x -250.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- -250 mm
- BFL
- -252 mm
- R1
- -129.75 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518720636186463
- λ
- 546.1 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
SLB-50-250NIR2 50.0 mm Dia. x -250.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-50-250NIR2 is a Plano-Concave Spherical Lens, designed with a diameter of 50.0 mm and a focal length of -250.0 mm. This lens is sourced from OptoSigma, a renowned vendor known for their high-quality optical elements. The lens is made from n-bk7 schott, a material widely used in optical applications due to its excellent optical properties.
The lens's geometry is characterized by a thickness edge of 5.4 mm and a thickness center of 3 mm. The inner and outer radii are both zero, indicating a plano surface on both sides of the lens. The back focal length is -252 mm, and the curvature radius (r1) is -129.75 mm.
The SLB-50-250NIR2 is coated with opt ir2 on both the front and back surfaces. This coating is specifically designed for the wavelength of 546.1 nm, enhancing the lens's performance in this spectral region. The coating ensures high transmission and low reflection, making the lens suitable for use in various applications, particularly in the infrared spectrum of 750-1550 nm.