Method and circuit for lighting high-pressure discharge lamp

摘要

A method of lighting a high-pressure discharge lamp is configured to change a power to be supplied to the high-pressure discharge lamp in accordance with a luminance parameter of an image content. The method includes switching between a low temperature operation and a high temperature operation so as to maintain a condition that mercury encapsulated into an arc tube part of the high-pressure discharge lamp constantly partially deposits without evaporating. The low temperature operation is performed where the temperature in the arc tube part is less than or equal to the deposition temperature of the mercury, whereas the high temperature operation is performed where the temperature in the arc tube part is greater than the deposition temperature of the mercury.

主权项

1. A method of lighting a high-pressure discharge lamp being configured to change a power to be supplied to the high-pressure discharge lamp in accordance with a luminance parameter of an image content, comprising:
switching between a low temperature operation and a high temperature operation on an as-needed basis regardless of the luminance parameter so as to maintain a condition that mercury encapsulated into an arc tube part of the high-pressure discharge lamp constantly partially deposits without evaporating, the low temperature operation being performed where a temperature in the arc tube part is less than or equal to a deposition temperature of the mercury, the high temperature operation being performed where the temperature in the arc tube part is higher than the deposition temperature of the mercury.