光纤面板放大像畸变的产生机理分析

Principle Analysis of Magnification Image Distortion in Fiber Plate

放大像畸变是光纤面板常见像畸变的一种,由于它的存在,极大地影响了相关元器件的成像质量和精度。研究了光纤面板内部放大像畸变的分布,发现板段内横向放大率变化趋势为由大变小然后又逐渐增大,靠近边缘位置存在一个突变区;纵向上中心放大率最小,两端放大率最大。根据单纤维的局部微观受力情况分析了该种放大率分布产生的原因及影响因素,通过增加润滑材料,以及优化光纤面板毛坯板段的热压温度和下压刻度等工艺参数,实现了有效控制放大像畸变在1%以内的目标。

As one of the common image distortions in fiber plate, the imaging quality and accuracy of rela- tive components are influenced by magnification image distortion greatly. Distribution of magnification image distortion in fiber plate is researched. Changing trend of horizontal magnification in plate is from high to low then grows high gradually and there is an abrupt area close to edges. Center magnification is the lowest at vertical and magnifications at both ends are the highest. According to forced states of single fiber at local micro area, produc- ing reasons and influence factors of the magnification distribution are analyzed. Magnification image distortion is controlled in 1% effectively by adding lubricating materials and optimizing process parameters such as ther- mo-forming temperature and suppressed scale etc. of roughcast sections of optical fiber plates.