The ultraviolet curing resin material
41 is filled in a space between the back surface of the upper mold
24 and the front surface of the lower mold
25, that is, in the cavity
22 in the same manner as described above. As shown in
FIG. 27, the first parallel beam
74 is emitted in the first direction
73 to the ultraviolet curing resin material
41 from the first light emission unit
71. The ultraviolet curing resin material
41 gets cured at positions off the masks
35. The ultraviolet curing resin material
41 starts getting cured at an area closest to the first light emission unit
71. The cured area gradually spreads in the overall ultraviolet curing resin material
41. Likewise, the second parallel beam
76 is emitted to the masks
35 and the ultraviolet curing resin material
41 from the second emission unit
72. The second parallel beam
76 serves to cure the ultraviolet curing resin material
41 behind the masks
35.