beam expander telescope

Product Description

Adjustable Beam Expander Telescope (2–10X Typical)

This is a versatile Keplerian beam expander designed to increase the diameter of a collimated input beam (typically from a laser) while reducing its divergence. Featuring an adjustable magnification range (commonly 2–10X), it allows precise control over final beam size for applications like laser material processing, long-distance projection, interferometry, and spatial filtering.

Key Features & Specifications:

• Type: Keplerian (lens-based, internal focus) or Galilean (specify if known)

• Magnification: Adjustable, typically 2–10X (varies by model)

• Input Aperture: Accepts collimated beam, often 3–10 mm diameter

• Threads: Standard C-mount (1″-32) or SM1 (1.035″-40) threads for integration

• Lenses: Multi-element, coated for common laser wavelengths (e.g., 532 nm, 632.8 nm, 1064 nm)

• Adjustment: Rotating barrel or helical focus for magnification change

Applications:

• Laser Material Processing: Expanding beams for uniform illumination in cutting, engraving, or annealing

• Long-Range Alignment & LIDAR: Reducing beam divergence for precise targeting over distance

• Interferometry & Holography: Preparing beam size for reference and object illumination

• Spatial Filtering: Integrating with a pinhole for beam cleanup and mode improvement