射出成型參數對塑膠透鏡的光學特性之影響

The Influence of Injection Conditions on the Optical Characteristics of Plastic Lenses Fabricated by Using Inject-molding Processing

黃振雄(Chen-Hsiung Huang)

指導教授 ： 莊為群

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2014年)

https://doi.org/10.6827/NFU.2014.00209

摘要

塑膠透鏡具有重量輕且大量生產的優點，因此塑膠光學透鏡在光學系統中扮演越來越重要的角色，但由於塑膠透鏡成型過程中，會因為收縮導致透鏡的輪廓產生形狀誤差或冷卻速率不均產生內縮現象，這些都會對透鏡的品質造成影響，對於成型不良的透鏡表面而言，入射光的反射分為鏡像反射和散射，然而散射的產生會減少到達成像面的光通量，降低圖像的對比度和光學系統的分辨率，故追求較佳的表面平整度可降低散射光，有效的提升透鏡成像的品質，對於在現代化的智慧型頭燈光學上可較易控制運用。
本文利用Lucid Shape設計出一車燈用透鏡模組,再利用模流分析軟體分析後實際開模,並依不同成型參數條件下塑膠透鏡所呈現之實際配光數值與模擬數值來分析出最佳成型參數。

關鍵字

塑膠透鏡 ； 透鏡模組 ； 成型參數

並列摘要

A procedure is the plastic lens has an advantage of being light-weight and mass production; therefore the plastic optics lens is getting more important in the optical systems. But, plastic lens is having the form error or the phenomenon of internal shrinkage because of the contraction or uneven cooling rate in the molding process. These will influence the quality of lens. As to defective lens surface, the reflection of incident light is divided into mirror reflection and scatter, however scatter will reduce luminous flux of image, decrease the contrast of the picture and resolution ratio of the optical system. So good lens flatness can reduce scatter, improve the image quality of lens and it is easier to use in the filed of modern intelligent headlamp optics.
This study is mention that Lucid Shape design a lens module for automobile headlamp. Before actual mold fabrication, it will use the software of mold flow analyze to analyze the best molding condition by referring to the actual and simulate light distribution amount of plastic lens in different molding conditions.

並列關鍵字

Plastic lens ； Lens module ； Molding conditions

參考文獻

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