Tungsten halogen lamp with infrared reflecting film and...
Tungsten halogen lamp with specific fill material, fill pressure
Tungsten laden emission mix of improved stability
Tungsten-halogen incandescent and metal vapor discharge lamps an
Tungsten-halogen incandescent lamp containing additive to reduce
Tungsten-halogen lamp with means for reducing filament embrittle
Tungsten-halogen lamp with organic and inorganic getters
Tungsten-halogen lamp with preferential tungsten deposition site
Tungsten-halogen light bulb, and reflector lamp using the same
Tungsten-rhenium filament and method for producing same
Type of light
Type of light