摘要:
A method for operating a gas discharge lamp featuring a gas discharge lamp burner and a first and a second electrode, wherein the electrodes have a nominal electrode separation in the gas discharge lamp burner before their first activation and said nominal separation is correlated to the lamp voltage. The method may include checking whether the off-time, corresponding to the time duration between two DC voltage phases, has expired; and if the off-time has expired, omitting commutations or applying pseudo-commutations for a predefined time duration which depends on the lamp voltage in such a way that a time duration of the omission of at least one of commutations and application of pseudo-commutations is predefined for each lamp voltage.
摘要:
A method for operating a gas discharge lamp may include; the gas discharge lamp is operated using an intermittently constant lamp current, whose time-relative average value of the frequency is predetermined by the lamp voltage of the gas discharge lamp in the steady state, wherein the lamp current has predefined commutation points in the temporal course, and a commutation for generating a commutation pattern can take place at these commutation points, wherein the time-relative average value of the frequency of the lamp current is adjusted by means of a variation of the commutation pattern.
摘要:
A method for operating a gas discharge lamp featuring a gas discharge lamp burner and a first and a second electrode, wherein the electrodes have a nominal electrode separation in the gas discharge lamp burner before their first activation and said nominal separation is correlated to the lamp voltage. The method may include checking whether the off-time, corresponding to the time duration between two DC voltage phases, has expired; and if the off-time has expired, omitting commutations or applying pseudo-commutations for a predefined time duration which depends on the lamp voltage in such a way that a time duration of the omission of at least one of commutations and application of pseudo-commutations is predefined for each lamp voltage.
摘要:
A semiconductor emitter (1; 12; 14; 18; 21; 23; 25; 27; 30; 32; 34), comprising an amplifier medium (2) and at least one waveguide (3, 4) arranged at the amplifier medium (2), wherein at least one light coupling-out region (10; 13; 15; 19; 20; 22; 24; 26a-e; 33; 35) is present at at least one waveguide (3), and at least one wavelength-converting phosphor (11; 28; 31r, 31g, 31b) is disposed downstream of at least one coupling-out region (10; 13; 15; 19, 20; 22; 24; 26a-e; 33; 35).
摘要:
A lamp having a lamp vessel is provided, the lamp vessel having a shaft, through which a power supply line extends; and a metallically conductive coating on the outer side of the shaft, wherein the maximum layer thickness of the coating is 30 nm, and the layer thickness is designed to minimize the reflection of infrared radiation generated in the lamp.
摘要:
In various embodiments, a method for operating a projector having a high-pressure discharge lamp, wherein an intensity of a light emitted by the high-pressure discharge lamp depends upon an electrical power supplied to the high-pressure discharge lamp, may comprise providing image information to be projected and, depending on the image information, determining a nominal value for the intensity of the light, supplying electrical power to the high-pressure discharge lamp at least in dependence on the nominal value for the intensity, determining a value correlated with a temperature of the high-pressure discharge lamp, and supplying additional electrical power-depending on the value for the temperature.
摘要:
A base for a high pressure lamp, such base having lateral walls enclosing the lamp bulb. Also disclosed are lateral walls for a base, and a lamp system comprising such base.