A long-life high-pressure discharge lamp

Abstract

This invention discloses a long-life high-pressure discharge lamp, comprising a high-pressure discharge lamp body and a detachable auxiliary lamp body. The high-pressure discharge lamp body includes a discharge lamp light-emitting unit and a corrugated metal foil power supply unit. The surface of the metal foil is coated with a platinum / silver-based anti-oxidation coating to alleviate thermal stress and extend lifespan. The auxiliary lamp body incorporates a multi-layer dielectric reflective film and a parabolic reflective surface, combined with a microprism array, to significantly improve ultraviolet reflectivity and focus it onto the discharge lamp electrodes, effectively reducing the start-up voltage. The auxiliary lamp is externally equipped with heat dissipation fins, a temperature sensor, and an active cooling system. The temperature is controlled in real time by the main control module. Combined with a ceramic heat insulation layer and an aluminum nitride composite reflective layer, heat insulation and heat dissipation are balanced. The sealed part operates at a low temperature, resulting in a long service life. This invention adopts a modular design, with the auxiliary lamp installed via a plug-in interface for convenient maintenance. It is suitable for high-temperature, high-precision light source scenarios such as projection and industrial curing, combining the advantages of high-efficiency reflection, intelligent temperature control, and long lifespan.

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