AC254-075-AB 25.4 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=75mm 400-1100nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- R1
- 52 mm
- R2
- -43.4 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.811866267147773
- λ
- 550 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
AC254-075-AB 25.4 mm Dia. N-BAF10/N-SF6 Unmounted Achromatic Doublet; EFL=75mm 400-1100nm
The AC254-075-AB is a 25.4 mm diameter achromatic doublet lens, designed and manufactured by Thorlabs. This unmounted lens is part of Thorlabs' extensive catalog of optical elements, and it is specifically designed for use in the 400-1100nm wavelength range.
The lens features a complex geometry, with a central thickness of 8mm and two additional thicknesses of 4mm, located at varying radii from the center. The first radius (r1) is 52mm, the second radius (r2) is -43.4mm, and the third radius (r3) is -217.4mm. This unique geometry allows for precise control over the lens's optical properties, making it suitable for a wide range of applications.
The lens is composed of two types of Schott glass: N-BAF10 and N-SF6. These materials were chosen for their specific refractive indices and dispersion properties, which contribute to the lens's achromatic design. The lens is coated with Thorlabs' AB Achromatic AR coating on both the front and back surfaces, which helps to reduce reflections and increase transmission in the 400-1100nm range.
As an unmounted lens, the AC254-075-AB offers users the flexibility to integrate it into their own optical systems. This lens is currently in stock and available for purchase through Thorlabs' website.
