| 摘要 |
PROBLEM TO BE SOLVED: To prevent an air bubble liable to cause the deterioration of an optical performance in the resin layer of a manufactured composite optical device by changing a section in which a resin comes into contact with a molding die at a low speed. SOLUTION: The optical face 1a of a molding die 1 is brought into contact with the top part 5a of a resin by moving the molding die 1 at a speed of about 0.1mm/sec. A section in which the molding die 1 is moved at this speed is between the distance h (2.7-0.04T)mm and the lower limits of a variation (2.5-0.04T)mm. Therefore, by moving the molding die 1 at a low speed (0.1mm/ sec) only in this section, the optical face 1a of the molding die 1 comes into contact the resin 5, so that no air bubbles may be mixed into the resin 5. T deg.C is an ambient temperature and h is the distance between the molded face of a basic material 2 on a central axis and the top part 5(a) of the resin 5. |
