Description
Manufacturer customized laser galvanometer automotive welding laser protection window lens
Specifications
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Material:— JGS1 UV-Grade Fused Silica (imported — low OH⁻, high damage threshold, low autofluorescence)— K9 Optical Glass (N-BK7 equivalent — cost-effective for lower power / less demanding environments)— Chemical Strengthening (optional — ion-exchange tempered for improved thermal shock resistance)
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Diameter Range: 20 mm – 140 mm (custom per head model; common Ø25 / Ø30 / Ø38 / Ø50 / Ø60 / Ø80 / Ø100 mm)
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Thickness: 1.0 mm – 9.0 mm (typical 1.5 / 2.0 / 3.0 / 5.0 mm per head design)
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Diameter Tolerance: +0.0 / −0.05 mm
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Thickness Tolerance: ±0.05 mm
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Surface Figure: λ/4 @ 632.8 nm (λ/6 or λ/10 on request)
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Surface Quality: 40-20 / 20-10 Scratch-Dig
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Parallelism: < 1 arcmin (standard); < 10 arcsec (precision)
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Clear Aperture: ≥ 90% of diameter
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Coating:— Double-sided BBAR @ 1030–1090 nm (fiber laser standard)— Optional: BBAR @ 915–980 nm + 1030–1090 nm (dual-band for diode + fiber)— Optional: BBAR @ 1064 nm + 532 nm (frequency-doubled YAG)— Hydrophobic / Oleophobic top coat (anti-stick for spatter) — optional
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Transmission: ≥ 99.5% (standard); ≥ 99.8% (premium grade)
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Damage Threshold: > 15 J/cm² @ 1064 nm, 10 ns pulse; > 10 J/cm² @ 10 ns, 532 nm (if dual-band)
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Edge Treatment: Ground / beveled 0.2×45°; optional edge blackening
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Mounting: Unmounted / Drop-in for cutting head seat / Retaining ring / Pre-assembled in quick-change cartridge
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Operating Temperature: −40 °C ~ +200 °C (continuous); short spikes to 400°C (spatter)
