FIELD: optics. SUBSTANCE: electrically heated article has heating element put on internal side of one of glasses with conductive wires, two-layer package with additional electrical heating element with conductive wires, temperature sensor placed on external surface of outer layer of package. Electrical heating element is provided with additional conductive wire and conductive wires of additional electrical heating element connected to are wires of basic electrical heating element. EFFECT: simplified design, enhanced reliability. 3 dwg
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Authors
Dates
1995-01-20—Published
1991-06-20—Filed