Barium tungsten cathodes are also used in signal lamps. Signal lights are commonly used in road traffic management, railway traffic and other places to indicate when vehicles and pedestrians can pass or stop. The following is the application of barium tungsten cathode in signal lamps:
Light-emitting principle: Barium-tungsten cathode can be used as a part of the light-emitting element to generate light to build signal lights. When electrons are released from the barium tungsten cathode and accelerated, they strike the fluorescent material, causing the fluorescent material to emit visible light. This light is used to display different signal states such as red, yellow and green.
High Brightness and Visibility: The light produced by the barium tungsten cathode has high brightness, which is especially important in signal lights, which need to remain visible at a distance and under different lighting conditions.
Fast Response Time: The light generated by the barium tungsten cathode has a fast response time, which allows the signal light to quickly switch states to provide accurate instructions to traffic participants.
Long life and stability: Barium tungsten cathode can provide a stable light source with a long service life. This is very important for signal lights, because signal lights need to work stably for a long time.
Energy saving: Barium tungsten cathodes produce light that is relatively bright and energy efficient, which helps save on energy costs.
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