LD4771-UV 12.7 mm Dia. UVFS Double-Concave Lens; EFL=-15mm 245-400nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -15 mm
- R1
- -14.3 mm
- R2
- 14.3 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458448271212196
- λ
- 588 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
LD4771-UV 12.7 mm Dia. UVFS Double-Concave Lens; EFL=-15mm 245-400nm
The LD4771-UV is a spherical lens from Thorlabs, featuring a unique double-concave design with a diameter of 12.7 mm and a center thickness of 3 mm. This lens is specifically designed for use in the ultraviolet (UV) spectrum, with an effective focal length (EFL) of -15 mm and a wavelength of 588 nm.
The lens is made from UVFS, a material with a refractive index optimized for UV applications. It comes with a UV-enhanced broadband anti-reflection (BBAR) coating on both the front and back surfaces, which significantly reduces surface reflections and increases transmission in the UV range (245-400 nm).
The double-concave geometry of this lens, characterized by radii of curvature of -14.3 mm and 14.3 mm, provides a negative focal length. This makes it suitable for use in a variety of applications where light needs to be diverged or focused over a short distance.
The LD4771-UV is currently in stock and available for purchase through the Thorlabs website. With its specifications and features, it is an ideal choice for users working with UV light in applications that require a high-quality, double-concave lens.