LD5313 25.4 mm Dia. CaF2 Double-Concave Lens; EFL=-50mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -50 mm
- R1
- -43.8 mm
- R2
- 43.8 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4338389315589535
- λ
- 588 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
LD5313 25.4 mm Dia. CaF2 Double-Concave Lens; EFL=-50mm Uncoated
The LD5313 is a spherical lens with a base shape of a circle, sourced from the reputable vendor Thorlabs. This lens falls under the category of a Double-Concave design, featuring two concave surfaces. The lens has a diameter of 25.4 mm and a center thickness of 3 mm, making it suitable for a variety of optical applications.
The effective focal length (EFL) of this lens is -50 mm, indicating that it is a diverging lens, causing incoming parallel rays to spread out. This property is determined by the lens's curvature, specifically the radii of the two spherical surfaces, which are -43.8 mm and 43.8 mm respectively. The lens is made of Calcium Fluoride (CaF2), identified by the Material ID "caf2 mal-1963".
The LD5313 is designed to operate at a wavelength of 588 nm. It does not come with any coating, as indicated in the "coating" field being empty. This means that the lens's surface properties are those of raw Calcium Fluoride, which may have implications for its performance in certain applications.
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