工業技術研究院

技術簡介

現有塑膠射出之車用厚件透鏡因單次射出熔膠量大與散熱路徑過長，造成冷卻時間過久的問題。如何快速成型減少生產成本並維持車用光學元件所需之精密生產要求，為目前產業界亟需解決的問題。

Abstract

The thick-wall lens of automotive headlight was made by optical grade PMMA plastic. Due to the volume of the thick-wall lens is too large, the heat of the melt plastic is accumulated in the center of the lens and cannot be transmitted quickly. Therefore, the production cycle of the thick-wall lens with a single injection process is too long, and resulting in low production efficiency. In addition, automotive optical lenses have high requirements for the accuracy of curvature and size. If the curvature, shape or size of the finished product shrinks or deforms due to cooling, it will affect the optical axis / light angle / light type of the lens and the assembly of the lamp.

技術規格

車用厚件透鏡之包覆式雙次射出成型製程及模溫控制技術，相較於既有單次射出冷卻水路成品，厚件透鏡(直徑＞55mm，厚度＞20mm)成品之生產週期縮短38％，收縮量及翹曲量減少11％，且射出成品之實際幾何尺寸誤差小於0.14mm，厚件透鏡之穿透率＞85％以及熱傳效率＞1.2W/cm^2。

Technical Specification

技術特色

應用範圍

本技術可應用於車燈之厚件透鏡(如魚眼透鏡)生產製程，後續可應用於新型車燈之相關光學元件(如矩陣透鏡、智慧車燈透鏡等)或天文望遠鏡等

接受技術者具備基礎建議（設備）

塑膠射出模擬軟體，模具冷卻水路熱流分析軟體

接受技術者具備基礎建議（專業）

機械/模具設計、塑膠射出製程

聯絡資訊