Optical element molding apparatus
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsShusaku Matsumura, Hirotaka Masaki
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Abstract
An optical element molding apparatus according to the present invention comprises a sealed molding chamber, a pair of molds arranged in the molding chamber, and a vacuum-pump means which vacuum-pumps an inside of the molding chamber. The vacuum-pump means includes a twist-groove-vacuum pump having a twisted groove on a surface of a rotor which is rotated at a high speed, and a rotary pump. The pair of molds are adapted to mold an optical element by press-molding an optical element material which is heated to a temperature higher than a transition point.
Claims2
An optical element molding apparatus comprising:
- a sealed molding chamber;
- a pair of molds arranged in the molding chamber;
- and
- a vacuum-pump means which vacuum-pumps an inside of the molding chamber;
- wherein
- the vacuum-pump means includes a twist-groove-vacuum pump having a twisted groove on a surface of a rotor which is rotated at a high speed, and a rotary pump;
- and
- the pair of molds are adapted to mold an optical element by press-molding an optical element material which is heated to a temperature higher than a transition point.
Dependencies are inferred from the claim text.