Flashlight lamps:
Che Ling manufactures a wide variety of incandescent vacuum and high pressure gas-filled lamps for flashlight applications. Most of them is designed as bi-pin type for easy replacement.
The light of vacuum lamp is generated through the incandescence of the tungsten filament under the vacuum environment within the lamp glass envelope. Its typical color temperatures range from 2400 K to 2700 K and its current draw is less than 0.8A. As the tungsten evaporates and deposites on the interior glass surface, light output decreases and the lamp wall darkens over the life of the lamp, there refer to the loss of maintenance – the ability of the lamp to maintain its initial level of light output. The rate of darkening increases as the color temperature increases. The maintenance is only 30% to 50% to its initial level of light output when the lamp reaches its life expectancy.
Our flashlight gas-filled lamps are made under special designed vacuum furnaces to fill in high pressure of krypton or xenon gas. Gas-filled lamps achieve light output through the incandescence of a tungsten filament in a pressurized, inert gas atmosphere that suppresses the evaporation of tungsten. This lamp design offers higher color temperatures, higher candle power per watt, better maintenance and longer life. Its typical color temperatures range from 2600 K to 3200 K, and current draw is less than 3A. Surface temperatures of the glass envelope run higher than vacuum lamps of comparable size and wattage due to the transduction of heat of the internal gas atmospheres and higher allowable current draw. The lamp wall is quite hot and runs up to 300 C. Light output will decrease somewhat over the life of the lamp, but this loss of maintenance is slight compared to a corresponding vacuum lamps. The maintenance is 75% to 85% to its initial level of light output when the lamp reaches its life expectancy.
Che Ling manufactures a wide variety of incandescent vacuum and high pressure gas-filled lamps for flashlight applications. Most of them is designed as bi-pin type for easy replacement.
Vacuum lamps:
The light of vacuum lamp is generated through the incandescence of the tungsten filament under the vacuum environment within the lamp glass envelope. Its typical color temperatures range from 2400 K to 2700 K and its current draw is less than 0.8A. As the tungsten evaporates and deposites on the interior glass surface, light output decreases and the lamp wall darkens over the life of the lamp, there refer to the loss of maintenance – the ability of the lamp to maintain its initial level of light output. The rate of darkening increases as the color temperature increases. The maintenance is only 30% to 50% to its initial level of light output when the lamp reaches its life expectancy.
Gas-filled lamps:
Our flashlight gas-filled lamps are made under special designed vacuum furnaces to fill in high pressure of krypton or xenon gas. Gas-filled lamps achieve light output through the incandescence of a tungsten filament in a pressurized, inert gas atmosphere that suppresses the evaporation of tungsten. This lamp design offers higher color temperatures, higher candle power per watt, better maintenance and longer life. Its typical color temperatures range from 2600 K to 3200 K, and current draw is less than 3A. Surface temperatures of the glass envelope run higher than vacuum lamps of comparable size and wattage due to the transduction of heat of the internal gas atmospheres and higher allowable current draw. The lamp wall is quite hot and runs up to 300 C. Light output will decrease somewhat over the life of the lamp, but this loss of maintenance is slight compared to a corresponding vacuum lamps. The maintenance is 75% to 85% to its initial level of light output when the lamp reaches its life expectancy.
Xenon gas is the best performing fill gas and provides the maximum candle power per watt. Xenon gas-filled lamps will exhibit about 15% more candle power per watt than krypton gas-filled lamps.
The information listed in the above tables is for reference only. Custom specifications can be made on request.