Shulou(Shulou.com)05/31 Report--

Hello everyone, Lin Fei to answer the above questions, the three-color led light source projector luminous principle, led projector principle many people do not know, now let's take a look!

Projector is an electronic device widely used all over the world. It is widely used in electronic demonstration, home theater and other fields. The projector is very simple to use, easy to operate, and can intuitively and obviously express the problems that people want to express. This is the most widely used in the demonstration.

The use and operation of the projector is very convenient and popular. Now many good families have installed their own home theaters, and the pictures are projected onto the big screen and watched by devices such as DVD. How does the projector work? The following editor will introduce the users in detail.

Introduction to the working principle of projector

There are many kinds of projectors, but basically all projectors work on the same principle and there is no difference. It's just that different levels of projectors work differently.

The basic working principle of the projector is to illuminate the light on the display elements of the image to produce an image, which is then projected through a lens. The display element of the image of the projector includes a transmission type of an image generated by light transmission and a reflection type of an image generated by reflected light. But no matter which type it is, it is the same. It divides the light in the projection lamp into three colors, namely, red, green and blue. These three colors are what we often call three primary colors, and then we can produce images of various colors according to these colors. Finally, the tricolor image is synthesized into an image through a prism, and finally the lens is projected onto the screen.

Among them, there are three types of image display originals, namely, a transmission liquid crystal element using a liquid crystal, a reflective liquid crystal element, and a DMD that uses a mirror to generate pixels. Each of these three elements has its own advantages and disadvantages.

General use of projectors

1. Adjust the light spot so that it can be projected evenly on the large screen. If the spot is uneven, just adjust the position of the light bulb, reflector bowl or condenser, slowly until the position is uniform.

two。 Adjust the optical path, that is, adjust the relative optical axis on the screen to be equal to the optical path of each symmetry point.

3. Adjust the distance, that is, adjust the distance between the slide and the screen to the best state.

4. To adjust the focal length is to adjust the distance between the lens and the projected object to the most appropriate position, so that the picture shows the clearest state.

In fact, the working principle of the projector is not very complicated, that is, it uses the principle of optical mapping and magnification. Its image color is adjusted by three primary colors, so it is very convenient to use.

At the end of this article, I hope it will be helpful to you.

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