| 摘要 |
A projector lighting method based on temperature compensation is provided. It includes the following steps: using the three primary colors red, green, blue LED array to simulate a white light as light source; sampling data of said LED array, and calculating the temperature value of the LED array based on the sampling data; adjusting the working current of the LED array according to the feedback of temperature value, controlling the luminous effect of the three primary colors LED array in the temperature value. A device according to the said lighting method includes: a LED array providing a white light source; a temperature sensor sampling data of the LED array; a temperature measuring circuit calculating the temperature value based on the data sampled by the temperature sensor; a control circuit adjusting the working current of the LED array according to the feedback temperature value, controlling the luminous effect of the LED array in the temperature. The invention overcomes the situation that the white light spectrum is non-ideal when the white light LED is used as the projector light source, and eliminates the harmful influence made by the temperature drift to the LED projection effect. |
