Laser Collimator Lens D20 F50 T3.5

• Diameter: 20mm
• Thickness: 3.5mm
• Focus: 50

1. Diameter (D20): The lens has a clear aperture of 20 mm, meaning it can accommodate laser beams up to this diameter.

2. Focal Length (F50): The lens focuses collimated (parallel) laser light to a point 50 mm from the lens (or vice versa for beam expansion).

3. Thickness (T3.5): The center thickness of the lens is 3.5 mm, which may affect mounting considerations.

Common Applications:

• Laser Collimation: Used to ensure a laser beam is perfectly parallel (collimated).

• Beam Focusing/Expansion: Can focus a collimated beam or expand a divergent beam depending on configuration.

• Optical Systems: Found in laser engraving, alignment tools, or scientific optics setups.

Material & Coating:

• Typically made of N-BK7 or fused silica for high-power lasers.

• Anti-reflective (AR) coatings may be applied to minimize losses at specific wavelengths (e.g., 1064 nm for Nd:YAG lasers).

Part Number/SKU: LensD20F50T3.5

* Product Images are for illustration purposes only, unless otherwise specified colour may be different.