| 摘要 |
PURPOSE:To release a product without deterioration of optical plane accuracy and external shape accuracy and at low cost by forming a step section between the side of a projected section with the width narrower than that of a base of of a mold, holding the base end with a space between the step section and the base and lifting up the same. CONSTITUTION:A mold 11 consists of a base section 11a and a projected section 11b projecting from said base 11a, and an optical part, for example, a profile 11c of a grating lens, is formed on the surface of the projected section 11b. The width of the projected section 11b is smaller than that of the base 11a, and step section 11d of square shapeare formed above the base 11a on both sides of the projected section 11b. Liquid photosensitive resin 12 is placed on the surface of the projected section 11b, and said photosensitive resin 12 is adhered close on the surface of a transparent base material 13 by pressing with the base material 13, and then light is irradiated from behind the base material 13 to harden the resin 12 and integrate the same with the base material 13. Then a space (a) between the base section 11a and the base material 13 and the end of the base material 13 is held up by tweezers 15 to release the base from the mold 11. The deterioration of optical plane accuracy and external shape accuracy does not occur by said arrangement. |
