69-438 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 633nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 20 mm
- BFL
- 17.69 mm
- R1
- 10.34 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
69-438 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 633nm
The 69-438 is a Plano-Convex Spherical Lens, 12.0mm in diameter and featuring a 20.0mm focal length, specifically designed for use with a 633nm wavelength. This lens is sourced from Edmund Optics, a reputable vendor known for their high-quality optical components.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. It has a refractive index of 1.5168 at 587.6nm and a Abbe number of 64.17, making it an ideal choice for a wide range of optical applications.
The lens features a Plano-Convex geometry, where one side is flat and the other side is curved. The curvature of the lens is defined by a radius of 10.34mm, which contributes to its focal length of 20.0mm. The lens has an edge thickness of 1.58mm and a center thickness of 3.5mm, providing structural integrity and resistance to damage.
The lens is coated with Edmund Optics' Las V-Coat 633, a broadband anti-reflection coating designed for use with 633nm lasers. This coating reduces surface reflections, improving transmission and overall performance. The coating is applied to both the front and back surfaces of the lens.
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