TRH254-040-A-ML 25.4 mm Dia. N-F2/N-K5 Mounted Hastings Achromatic Triplet; EFL=40mm 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- R1
- 30.2 mm
- R2
- 14.2 mm
Material 1
- Name
- N-F2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6236565068581217
- λ
- 550 nm
- B1
- 1.39757037
- C1
- 0.00995906143 μm2
- B2
- 0.159201403
- C2
- 0.0546931752 μm2
- B3
- 1.2686543
- C3
- 119.248346 μm2
Material 2
- Name
- N-K5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5243648836873236
- λ
- 550 nm
- B1
- 1.08511833
- C1
- 0.00661099503 μm2
- B2
- 0.199562005
- C2
- 0.024110866 μm2
- B3
- 0.930511663
- C3
- 111.982777 μm2
Material 3
- Name
- N-F2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6236565068581217
- λ
- 550 nm
- B1
- 1.39757037
- C1
- 0.00995906143 μm2
- B2
- 0.159201403
- C2
- 0.0546931752 μm2
- B3
- 1.2686543
- C3
- 119.248346 μm2
TRH254-040-A-ML 25.4 mm Dia. N-F2/N-K5 Mounted Hastings Achromatic Triplet; EFL=40mm 400-700nm
This is the TRH254-040-A-ML Hastings Achromatic Triplet Lens, a high-quality optical component from Thorlabs. The lens is designed for use in the 400-700nm wavelength range, making it suitable for a wide range of applications in the visible spectrum.
The lens is a mounted triplet, meaning it consists of three individual lenses mounted together. This design helps to reduce chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The use of N-F2 and N-K5 Schott glass in the lens' construction further enhances its achromatic performance.
The lens has a diameter of 25.4mm and a thickness of 16.5mm at the edge. The geometry of the lens is defined by its four radii (r1, r2, r3, r4) and three center thicknesses. The first and third center thicknesses are 2.5mm each, while the second is 17mm. The radii are 30.2mm, 14.2mm, -14.2mm, and -30.2mm, respectively.
The lens features Thorlabs' proprietary coatings on both the front and back surfaces, which are designed to enhance its performance in the specified wavelength range. The lens is designed to be used in a multi-element optical system, and its shape and dimensions reflect this.
