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Линза фокусирующая 38.1 мм F=5

Линза фокусирующая 38,1 мм, F = 5 дюймов (127 мм)

Линзы изготовлены из селенида цинка (ZnSe). Селенид цинка (ZnSe), представляет собой светло-желтый материал, с низким коэффициентом поглощения до 0,0005 на длине волны CO2 лазеров 10600нм, а также прозрачный в широком диапазоне спектра от видимого до инфракрасного что позволяет быстро осуществлять юстировку  оптических систем с использованием излучателей видимого спектра. От перегрева растрескивается.

Благодаря вышеперечисленным свойствам селенид цинка используют при изготовлении оптических линз в углекислотных лазерах (CO2). В процессе эксплуатации линзы нужно содержать в чистоте, отводить продукты горения материалов с помощью сжатого воздуха, обдувать от пыли и сажи, а при сильном загрязнении аккуратно протирать, чтобы исключить царапины, безворсовой салфеткой с изопропиловым спиртом.

Устанавливаются линзы в головку лазерного гравера выпуклой стороной вверх - к излучателю. Аккуратно затягивайте фиксирующее кольцо лазерной головки, чтобы линза не лопнула.

Из-за меньшего показателя преломления чем у арсенида галия (GaAs), линзы из селенида цинка имеют увеличенную глубину фокуса, что позволяет прорезать более толстые материалы без нарушения прямолинейной геометрии реза, осуществлять гравировку при перепаде высот гравируемой поверхности, но вместе с тем диаметр фокусного пятна будет немногим больше чем у линз из арсенида галия, что может быть недопустимым для очень тонкой гравировки.

  • Линзы с фокусным расстоянием от 1,5 до 2 дюймов как правило используются преимущественно для гравировки и резки тонких материалов толщиной до 2мм

  • Линзы с фокусным расстоянием 2,5 дюйма считаются универсальными и используются в равной степени и для гравировки и для резки материалов толщиной до 3мм

  • Линзы с фокусным расстоянием 3 дюйма и более используются в основном для резки более толстых материалов, для сохранения прямолинейной геометрии реза, и редко для гравировки с большими перепадами высоты поверхности