High-quality 3X Beam Expander designed specifically for handheld laser pointers, perfectly matching Mainely Lasers models and compatible with many similar designs containing M11.4x.5 threading or M9x.5 Lenses using the adapter!
Follow the picture instructions for use on your laser!
This compact, precision-engineered beam expander multiplies your laser's beam diameter by 3x, reducing divergence by approximately 3–3.3x for a dramatically tighter, more focused spot at long distances. The result? Your laser's visible range extends significantly farther—ideal for night use, outdoor pointing, fog/haze penetration, or simply achieving that crisp, "lightsaber-like" beam profile enthusiasts love.
Key Features:
Expansion Ratio: 3X (increases beam diameter ~3x while slashing divergence)
Construction: Durable polished aluminum alloy body with anti-reflective coated optics for maximum transmission and minimal loss across visible wavelengths (especially strong performance on blue 445–462nm, green 520–532nm, red 638–650nm, and more)
Adjustable Focus: Fine-tune collimation for the sharpest possible beam at your preferred distance
Threading: Use the adapter to attach to any laser with a standard M9x.5 lens!
Compact & Lightweight: Mini design keeps your setup balanced and portable
Why this one stands out: Many users pair this exact style with Mainely Lasers handhelds for night astronomy, signaling, or long-range burning demos. It transforms a good laser into an exceptional one by keeping the beam tight over hundreds of meters instead of blooming into a wide spot.
Condition: New – Fully functional, clean lenses, no scratches or damage. Comes as pictured.
Perfect upgrade for any laser with a standard M9x.5 lens or compatible laser enthusiast looking to maximize throw and beam quality without going bulkier (like 5X or 10X options).