Projector light engine and projector

Abstract

The invention discloses a projector light machine. The projector light machine comprises a machine shell, a drive mechanism, a first half prism and a second half prism. The light-emitting end of the machine shell is provided with a first wall board, a second wall board and a third wall board, wherein the second wall board and the third wall board are oppositely arranged. The drive mechanism is arranged on the first wall board and comprises a motor and a transmission shaft connected with the motor. The two ends of the transmission shaft are provided with first threads and second threads respectively. The first half prism is matched with the first threads, and the second half prism is matched with the second threads. The motor drives the transmission shaft to rotate so as to drive the first half prism and the second half prism to move oppositely to close a light path or move away from each other to start the light path. The projector light machine can effectively prevent an IRIS light blocking piece from absorbing a large amount of heat with small area and not dissipating heat in time, and therefore the local temperature is prevented from increasing sharply and the problem of abnormal work of a projector is solved. The invention further provides the projector comprising the projector light machine.

Description

technical field [0001] The invention relates to the technical field of projectors, in particular to a projector optical machine and a projector. Background technique [0002] With the progress of society, people's understanding of projectors is becoming more and more profound, and the requirements for the use of projectors, such as noise, clarity, and contrast, are also getting higher and higher. [0003] Traditional projectors generally control the contrast by controlling the IRIS baffle. However, the contrast of this kind of projector is not very high, and there is still light that can pass through when it is completely dark. This is due to the light blocking of the IRIS baffle. The area is too small. If the light-blocking area of ​​the IRIS light-blocking sheet is increased, the temperature of the projector will be too high to melt when the scene is completely black, and the light reflected back by the IRIS light-blocking sheet will make the temperature of the bulb spher...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a projector optical machine and a projector for the problem that the small area of ​​the IRIS light-shielding sheet absorbs a large amount of heat and cannot dissipate heat in time, so that the local temperature rises sharply, thereby causing the projector to work abnormally.

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