Discharging lamp turning-on device and discharging lamp turning-on method

Abstract

The invention discloses a discharging lamp turning-on device and a discharging lamp turning-on method, wherein the discharging lamp turning-on device and the discharging lamp turning-on method comprising a discharging lamp turned on horizontally and a power supply device for turning on the discharging lamp prevents extinguishment caused by electric arc when the discharging lamp is to be turned on and unstability of the electric arc when the discharging lamp is turned on stably. A magnetic flux supplying mechanism is provided close to the discharging lamp for control, so that magnetic flux can be supplied from the magnetic flux supplying mechanism to a direction where the downward side of the electric arc is attracted when the discharging lamp is applied with a start voltage, and the magnetic flux is set to have a smaller density than the magnetic flux when the start voltage is applied after the discharging lamp is at a stable state.

Description

technical field [0001] The present invention relates to a lighting device and a lighting method of a horizontally lit discharge lamp, and more particularly to a lighting device and a lighting method of a discharge lamp such as a discharge lamp used as a light source of a digital projector. Background technique [0002] A discharge lamp in which xenon gas is sealed in a discharge space is widely used as a light source of a projector device for projecting images in a movie theater or the like. In the past, in the projection system in movie theaters, a film projector that irradiates radiated light from a discharge lamp to a 35mm film and projects it on a screen has been used as a standard, but recently, in the projection system of movie theaters, it has become possible to The high degree of CG using digital technology with improved image quality has advantages such as no film degradation and cost reduction associated with film production. Therefore, digital movies are gradually...

AI Technical Summary

Problems solved by technology

[0018] However, in this prior art, when the trajectory (arc) of electrons fluctuates while the lamp is stably lit, it is corrected and a magnetic field is stably generated near the lamp, rather than trying to eliminate extinguishment when the lamp is started.

[0019] And, if the emitter (electron-radiating substance) contained in the cathode passes through a certain amount of cumulative lighting time, its content will decrease, and the emitter will no longer be stably supplied to the front end of the cathode. However, at this time, if If the magnetic flux is continuously supplied to the stably lit arc, it will be affected by it instead, and the problem of arc instability will occur instead.

Images