光模组用镜头盖、光模组以及光模组用镜头盖之制造方法;LENS CAP FOR OPTICAL MODULE, OPTICAL MODULE, AND METHOD FOR MANUFACTURING LENS CAP FOR OPTICAL MODULE

摘要

一种可防止光输出变动，确保气密性之光模组用镜头盖、光模组以及光模组用镜头盖之制造方法。;镜筒2由金属材料构成。冲压镜头3由玻璃构成，其被保持在镜筒2上。玻璃的线膨胀系数系6~8ppm/K。金属材料的线膨胀系数，系在150~800℃为10ppm/K以上，100℃以下为8ppm/K以下。; and a press lens made of glass and held to the barrel, wherein a coefficient of linear expansion of the glass is 6 to 8 ppm/K, and a coefficient of linear expansion of the metal material is 10 ppm/K or above at 150 to 800℃ and 8 ppm/K or less at 100℃