Abstract
As the prosperous growth in electro-optics industry, the demand on optical components has grown significantly as well. Among the optical components, optical lenses are typically categorized as either plastic or glass type. The objective of this study is to investigate the injection molding of plastic lenses which are known for the process with low cost, high volume, good yields, and high efficiency. Plastics lenses do not need polishing and relevant post processing steps which results in reduction of production times and costs. Nevertheless, birefringence embedded in the lenses have made the optical path difference in lens components too large to be compensated so that scraps becomes a major problem in the industry which needs to be resolved today. Because the optical qualities of injection molded lenses consist of geometric errors and residual birefringence, analysis of contributing factors are conducted with experimental methods for efficiency improvement, cost reduction, and time saving. The key is to get hold of process control factors for combining the optical analysis into flow analysis programs so that optical qualities can be successfully predicted.