عدسة فريسنل، القطر 400 مم، البعد البؤري 240 مم، عدسة أكريليك (ليست زجاجية)، لفصول الفيزياء، التدفئة الشمسية، التكبير.
مميزات خاصة
- Size:Φ400mm, Focal Length:240mm, Thickness:3mm, Material: PMMA (Acrylic)
- High Light Transmittance, High Efficiency in Focusing, High Precision.
- Great for Physics Classroom Education, Solar Heating Experiment, DIY Solar Project, Magnifying, Scientific Research
- 1PCS Pack Round Fresnel Lens
- Six Seasons is a Professional Manufacturer of Fresnel Lens and Optical Lens
وصف
Size: Φ400mm, Focal Length: 240mm, Thickness: 3mm, Material: PMMA (acrylic), Groove pitch: 0.5mm, Transmission (%): 92 (from 400-1100nm), Index of Refraction nd : 1.491 Operating Temperature (°C): 80 (Maximum)
{"error":"\u062e\u0637\u0623","cart_limit":"\u0644\u062f\u064a\u0643 \u0627\u0644\u0643\u062b\u064a\u0631 \u0645\u0646 \u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a \u0641\u064a \u0633\u0644\u0629 \u0627\u0644\u062a\u0633\u0648\u0642 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0643.","prod_limit":"\u0644\u0627 \u064a\u0645\u0643\u0646\u0643 \u0625\u0636\u0627\u0641\u0629 \u0627\u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u0647\u0630\u0627 \u0627\u0644\u0645\u0646\u062a\u062c"}