传统LED玻璃透镜出产工艺成型
玻璃透镜单从透镜的用途来看，它不仅可以用于LED，也可用于安防、数码相机、镭射、光学仪器等领域，材质上包括矽胶、PMMA(亚克力)、PC、玻璃等等，但在LED领域方面依然以亚克力和PC为主。 PC的耐热性比较好，广泛应用于户外，如LED路灯。亚克力耐热性稍差，所以一般用于室内。
虽然透镜在国内已经不是新鲜东西，大改进的空间比较有限，但是各个厂家还在努力摸索。

LED透镜厂家传统的玻璃透镜模压成型法，是将熔融状况的光学玻璃毛坯倒入高于玻璃转化点50℃以上的低温模具中加压成形。这种办法不只简单发生玻璃粘连在模具的模面上，并且产品还简单发生气孔和冷模痕迹(水纹)，不易取得抱负的形状和面形精度。后来，选用特别资料精密加工成的压型模具，在无氧化氛围的环境中，将玻璃和模具一同加热升温至玻璃的软化点邻近，在玻璃和模具大致处于相同温度条件下，使用模具对玻璃施压。在坚持所施压力的状况下，一边冷却模具，使其温度降至玻璃的转化点以下。这种将玻璃与模具一同实施等温加压的办法叫等温加压法，是一种对比简单取得高精度，即简单精密地将模具形状外表仿制下来的办法。这种玻璃光学零件的制作办法缺点是：加热升温、冷却降温都需求很长的时刻，因而出产速度很慢。

Traditional Manufacturing Process of LED Glass Lenses
Glass lenses, depending on their purpose, are versatile components used not only in LEDs but also in security systems, digital cameras, lasers, and optical instruments.
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Materials Used
• Silicone, PMMA (Acrylic), PC (Polycarbonate), and Glass are commonly used materials.
• PC:
o Offers good heat resistance, making it suitable for outdoor applications like LED streetlights.
• PMMA (Acrylic):
o Has slightly lower heat resistance, generally used indoors.
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Traditional Glass Lens Molding Process
1. Early Methods:
o Melted optical glass preforms are poured into low-temperature molds at a temperature 50°C above the glass transition point.
o Issues:
 Glass often sticks to the mold surface.
 Common defects include air bubbles and cold mold marks (watermarks).
 Achieving the desired shape and surface precision is difficult.
2. Improved Method:
o Special Precision Molds:
 Manufactured using advanced materials and techniques.
 Glass and molds are heated together to the softening point of the glass in an oxygen-free environment.
o Isothermal Pressing:
 Both the mold and glass are maintained at similar temperatures.
 Pressure is applied to shape the glass, and the mold is gradually cooled below the glass transition point while maintaining pressure.
o Benefits:
 Achieves high precision by accurately replicating the mold surface.
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Limitations
• Slow Production Speed:
o The process requires long heating and cooling times, limiting production efficiency.
Despite these challenges, isothermal pressing remains a reliable method for producing high-precision glass optical components in LED applications and beyond.