Apparatus for molding optical glass elements

Details Apparatus for molding optical glass elements Apparatus for molding optical glass elements

1992-04-27

1994-02-01

Lindsay, Robert L.

Glass manufacturing

Control responsive to condition sensing means

Temperature or heater control

65 29, 65 64, 65102, 65157, C03B 2300

Patent

active

052828786

ABSTRACT:
The apparatus for molding an optical glass element is made up of relatively movable upper and lower molds for press molding a glass blank, and a plurality of infrared ray lamps encircling the upper and lower molds, temperature measuring devices for measuring the temperatures of the upper and lower molds, and a controller responsive to the outputs of the temperature measuring devices for controlling electric inputs to the infrared ray lamps thereby maintaining the temperatures of the upper and lower molds at predetermined values.

REFERENCES:
patent: 4591373 (1986-05-01), Sato
patent: 4778505 (1988-10-01), Hirota et al.
patent: 4913718 (1990-04-01), Yoshimura et al.
patent: 5032159 (1991-07-01), Kuwabara et al.
Masaaki Yokota, "Method for Pressure Molding Optical Element", Japanese Patent Publication No. 216929/1987 Sep. 24, 1987.

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