SLB-30B-30NM 30.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- -29.7 mm
- BFL
- -30.3 mm
- R1
- -31.14 mm
- R2
- 31.14 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-30B-30NM 30.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-30B-30NM is a high-quality double-concave lens, boasting a diameter of 30.0 mm and a focal length of -29.7 mm. This lens is sourced from OptoSigma, a renowned vendor known for their precision optical elements.
The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. It features a base shape of a circle, with an edge thickness of 9.7 mm and a center thickness of 2 mm. The lens's effective focal length (EFL) is -29.7 mm, and its back focal length (BFL) is -30.3 mm.
The SLB-30B-30NM is coated with opt m on both the front and back surfaces, enhancing its performance in the 400-700nm wavelength range. This coating ensures high transmission and low reflection, making it ideal for various applications.
The lens's geometry, including its inner and outer radii, is optimized for superior performance. The first radius of curvature (R1) is -31.14 mm, while the second radius (R2) is 31.14 mm. These specifications make the SLB-30B-30NM a spherical lens, a common choice for many optical systems due to its ease of manufacturing and high performance.
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