N-BK7 Windows ~ Optical Window Manufacturer ~ Advanced Optics
N-BK7
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Al Mirror 10-50mm N-BK7 Optical Glass Protective Al Metalized Coating Reflector | eBay
Applied Sciences | Free Full-Text | Effect to the Surface Composition in Ultrasonic Vibration-Assisted Grinding of BK7 Optical Glass
Optical Materials
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5pcs Total Size Diameter 50mm And 4mm Thickness Transparent Uv And Ir Rays Bk7 Optical Window Glass - Optical Filters - AliExpress
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BK7(K9) Optical Glass Plates L7mm to 53mm – MICQstore