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Preparation of plastic spherical microlenses by use of a fluoropolymer stencil and oil-bath heating

机译:使用含氟聚合物模版和油浴加热制备塑料球形微透镜

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A new method for fabricating plastic spherical microlenses was developed, which allowed self-alignment of lenses and self-organized formation of a spherical shape. First a low-surface-energy fluoropolymer thin film was deposited and patterned as a stencil. Then photosensitive phenol resin was patterned on it as the lens material. Finally the resin was annealed in an oil bath to form a sphere. The molten phenol resin spontaneously formed a sphere and positioned itself in the center of the fluoropolymer ring pattern as a result of the difference of surface free energy and the equivalently zero-gravity condition in the oil bath. When a light-emitting-diode printer head was loaded with spherical microlenses, its optical output increased by 1 order of magnitude.
机译:开发了一种制造塑料球形微透镜的新方法,该方法可以实现透镜的自对准和自组织形成的球形。首先,沉积低表面能的含氟聚合物薄膜并将其图案化为模版。然后,在其上将光敏酚醛树脂构图为透镜材料。最后,将树脂在油浴中退火以形成球体。由于表面自由能的不同和油浴中等效的零重力条件,熔融的酚醛树脂自发地形成一个球体并将其自身定位在含氟聚合物环状图案的中心。当发光二极管打印头装有球形微透镜时,其光学输出增加了1个数量级。

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    《Applied optics》 |2003年第19期|共8页
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