The difference between tungsten bulb and halogen lamp
While the rest are in the form of heat loss, low color temperature (2700-3100K). Halogen bulbs in the retention of the above advantages on the basis of greatly improve these shortcomings.
Ordinary tungsten bulbs have many advantages: simple, low cost, easy to adjust and control brightness, good color rendering (Ra = 100) and so on, but there are also many fatal shortcomings: such as short life, low luminous efficiency , Generally only 6% can be converted into light energy
Halogen bulbs can operate at higher temperatures than conventional tungsten bulbs, and their brightness and efficiency are higher. However, at this temperature, ordinary glass may soften, so halogen bulbs need to use a higher melting point of quartz glass. Since quartz glass can not block ultraviolet light, so halogen bulbs are usually required to use another UV filter.
Halogen lamps can be operated at higher temperatures because of the filament, resulting in higher brightness, higher color temperature and higher luminous efficiency.
