High-Efficiency G8 Glass Collimating Lens - Broadband AR Coated 400-700nm - M9x0.5 Threaded - Best Balance of Power & Beam Quality
Description:
Elevate your high-power laser diode project with the renowned G8 single-element glass collimating lens – the ultimate compromise between raw power output and excellent beam characteristics!
Key Features:
Single-element aspheric design with longer focal length (~8mm EFL) for reduced divergence and a cleaner beam profile compared to short-FL lenses.
Broadband Anti-Reflective (AR) coating (400-700nm) for high transmission across violet (405nm), blue (445-450nm), green (520nm), and red wavelengths.
~90-91% transmission efficiency – Captures significantly more power than 3-element lenses while providing better far-field performance than G2.
Large aperture minimizes clipping on multi-mode diodes (e.g., NICHIA NUBM44/47/08, Osram, Mitsubishi high-power blues).
Standard M9x0.5 threading in durable anodized aluminum barrel – Compatible with most 12mm diode modules, Aixiz housings, and laser pointers/burners.
Excellent stray light suppression for a tight, round spot with minimal artifacts/splash.
Why Choose G8 Over Others?
Vs. G2 (short FL single-element): Higher power (~95-96%) but worse divergence and more splash. G8 gives ~90% power with much better beam at distance.
Vs. 3-Element: Cleaner, lower-divergence beam (~70% power) – G8 delivers 20%+ more output while matching or exceeding far-field spot quality.
Perfect middle ground: Great for burning, cutting, engraving, pointers, or projectors needing both power and visibility/range.
Ideal For:
High-power blue lasers (445nm/450nm), greens, or multi-wavelength builds.
CNC/engraving machines requiring longer working distance and balanced performance.
Condition: Brand new, precision-mounted, dust-protected packaging. Note: For absolute maximum power, choose G2. For lowest divergence, choose 3-element. G8 is the "have it all" option!