Vacuum Evaporation Method for Forming a Multilayer Film Filter on a Plastic Component and Multi-Layer Film Filter Optical Image-Capturing Assembly with the Plastic Component
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United States of America Patent
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Issued Date -
Feb 5, 2009
app pub date -
Aug 26, 2007
filing date -
Aug 3, 2007
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Abandoned
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Abstract
A vacuum evaporation method for forming a multi-layer film filter on a plastic optical component and a multi-layer film filter optical image-capturing assembly with the plastic optical component, in which the multi-layer film filter generally refers to various filters produced by adopting the optical interference principle. During the evaporation operation, the evaporation time of each film is not more than four minutes, the distance between the evaporation source and the plastic optical assembly must be more than 100 centimeters, and the ion assisted deposition is performed when the high refraction film and low refraction film are alternately laminated one upon the other to form more than 40 layers of films. The optical image capture assembly with the plastic optical component can be used without additionally adopting a multilayer film filter, thus effectively reducing the volume and the cost.
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