Light uniformizing device, projection light machine and projection equipment

Abstract

The invention discloses a dodging device, a projection light machine and projection equipment. The light uniformizing device comprises a support, a light uniformizing rod body and a magnetic field coil assembly. The support is provided with a containing space for containing the light uniformizing rod body in the length direction. The light uniformizing rod body comprises a first light guide rod movably arranged relative to the support and a second light guide rod fixedly arranged relative to the support, and the first light guide rod and the second light guide rod are in lap joint to define a light outlet of the light uniformizing rod body. The magnetic field coil assembly is arranged at the position, close to the light outlet, of the support. The magnetic field coil assembly comprises a magnetic part and a coil, one of the magnetic part and the coil is fixed on the first light guide rod, and the other one is fixed on the bracket; when the coil is powered on, the coil generates Ampere force in the magnetic field of the magnetic part, the first light guide rod shifts along the first direction under the action of the Ampere force to adjust the initial size of the light outlet to the target size, so that the problems that black shadows appear on the edge of an existing projection picture and the display brightness is low are solved, and the display effect and the display quality are improved.

Description

Technical field [0001] This application involves the field of projection technology, especially a uniform device, projection light machine and projection equipment. Background technique [0002] The projection equipment is popular with users because of its projection screen. With the development of electronic technology and multimedia technology, users' requirements for projection equipment have become higher and higher. While the projection equipment projection effect is continuously optimized, it also develops towards miniaturization and lightness. Users are easy to carry and enjoy the visual effects of large screens anytime, anywhere. [0003] Existing projection equipment usually includes light sources and uniform light devices. The uniform light device is used to make light light on the outlet of the light source, and then enters the display chip of the imaging component to form a uniform rectangular lighting spots at the display chip and cover the display display. chip. The...

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