Features
- Ideal for Reducing Beam Divergence
- Diffraction-Limited Performance with <λ/4 Wavefront Error Introduced
- Input Aperture is Threaded to Work with our SM05- and SM1-Threaded Adapters
- Easy to Mount and Align using our Standard Posts and Mounts
The BE15M-A 15X Galilean Beam Expander provides an ideal solution for expanding or reducing beam diameters. This beam expander has been designed to minimize the telescope length, minimize the introduced wavefront error (<λ/4), and provide diffraction-limited performance (for <Ø1 mm input). The design incorporates a plano-concave singlet to provide the desired divergence and a doublet, which has been computer optimized to balance aberrations and re-collimate the beam. The rotary barrel controls adjustment of the diverging lens with graduations in 50 µm increments. This product is offered with an A (350-650 nm) broadband antireflection coating.
Specifications
- Expansion: 15X
- Input Aperture: Ø4.5 mm
- Input Beam Diameter: 2.25 mm
- Output Beam Diameter: 32.73 mm
- Wavelength: 543.8 nm
- AR Coating: 350 – 650 nm
- AR Coating Reflectivity: <0.5% Over Coating Range
- Peak-to-Valley Wavefront Distortion: 0.0163λ
- RMS Wavefront Distortion: 0.0034λ
- Wavefront Error: <λ/4
- Scratch-Dig: 20 – 10
- Lens Substrates: N-BK7, N-SF5
- Input Housing Dimension: Ø32.0 mm
- Output Housing Dimension: Ø59.0 mm
- Length of Housing: 197 - 215 mm
- Recommended Mount: KS2, TR2
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