Projection device and temperature regulation and control method thereof

Abstract

The invention discloses a projection device. The device comprises a shell, a light source module, a light valve, a projection lens and a temperature control element. The light source module is arranged in the shell and is suitable for providing an illumination light beam. The light valve is arranged on the transmission path of the illumination light beam and used for converting the illumination light beam into an image light beam. The projection lens is disposed on a transmission path of the image beam. The projection lens comprises a lens barrel, and the lens barrel is provided with a curvedsurface. The temperature control element is arranged on the projection lens and is suitable for cooling or heating the projection lens. The temperature control element has a temperature control surface. The shape of the temperature control surface fits the curved surface of the lens barrel, and the temperature control surface is used for being connected to the curved surface of the lens barrel. The invention further provides a temperature regulation and control method of the projection device. According to the projection device and the temperature regulation and control method thereof providedby the invention, the projection lens can be effectively cooled or heated, so that the projection quality of the projection device is improved.

Description

technical field [0001] The present invention relates to an optical device and its regulation method, and in particular to a projection device and its temperature regulation method. Background technique [0002] Projection devices can be used to produce large-scale images. With the evolution and innovation of science and technology, projection technology is also constantly improving. The imaging principle of the projection device is, for example, to convert the illumination beam generated by the lighting system into an image beam through a light valve, and then project the image beam onto the projection target (such as a screen or wall) through the projection lens to form a projection screen . Generally speaking, projection lenses used in projection devices can be classified into replaceable lenses and non-replaceable lenses. Non-replaceable lenses are generally available for home use and educational use where projection brightness requirements are generally low. Intercha...

AI Technical Summary

Problems solved by technology

On the one hand, the axial flow fan or blower fan is difficult to control the temperature of the airflow for cooling or heating; on the other hand, the cooling or heating effect of the axial flow fan or blower fan working for a long time is not ideal

It is also possible to use a planar cooling chip for cooling or heating, but the planar cooling chip is not easy to fit the cylindrical lens, and it is difficult to achieve a better heat conduction effect

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