LED projector with variable color gamut effect

Abstract

The invention discloses an LED projector with a variable color gamut effect. The LED projector comprises a central processing unit, a green light LED lamp, a light path system, a color filter, a motor, a motor driving circuit and two limiting switches, wherein the color filter is mounted between the green light LED lamp and the light path system; the motor can control the color filter to move in a direction perpendicular to the direction of the emergent light of the green light LED lamp; the two limiting switches are used for detecting signals when the color filter is fully moved in and moved out of the emergent light region of the green light LED lamp; the signal output ends of the two limiting switches and the control signal input end of the motor driving circuit are correspondingly connected with the central processing unit separately; and the output end of the motor driving circuit is connected with the control input end of the motor. According to the LED projector, the color filter is added, and an automatically-controlled color filter control mechanism is adopted, so that a user can choose to perform color filtering or not according to actual needs, so that the use requirements of high-color-gamut image colors and/or high luminance in office occasions can be satisfied, and the range of application of the projector is expanded consequently.

Description

technical field [0001] The invention relates to a projector, in particular to an LED projector with variable color gamut effect. Background technique [0002] As a large-screen projection device, the projector is widely used in concerts, business, conferences, home theaters, etc.; the projector is a precision instrument that integrates optical, mechanical, and electrical complex systems. Because of its large projection screen, it is often The requirements for image quality and screen color are high, so it is especially important to solve the color problem of projection, and the color performance of the projector is described by the color gamut. [0003] The current LED micro-projectors all use LED light sources. Their long life, high light efficiency, energy-saving and environmental protection features increase the selling points of the projectors, so they are favored by the market. However, since LED projections all use RGB primary colors as light sources, the purity of th...

AI Technical Summary

Problems solved by technology

[0004] Due to the LED production process, light effect and other reasons, the color of the LED light source used will not be pure. The most important thing is that the green light does not emit pure green. The spectrum of the green light of the actual LED light source is as follows figure 2 as shown, figure 2 The dotted line in is the spectrum of pure green light, and figure 1 Consistent, the solid line is the spectrum of the actual green light. It can be seen that the actual green

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