The projector picture is distorted? What should I do ?

[loughborough]

Many projection users will always deform the projection screen when using the projection. Each adjustment is always imperfect, which is very uncomfortable for people with advanced obsessive-compulsive disorder.

In the installation and commissioning of the projector, there is a principle that must be followed: the center line of the beam emitted by the projector and the projection screen must be perpendicular, or the plane where the curtain is located and the plane where the projector lens is located must be parallel, so that the projection The picture is not trapezoidal or skewed. The reason is simple: the farther the light is from the electronic board, the larger the image, and the closer it is, the smaller it is. Only the sides are equidistant so that the entire image can be the same size.

Assuming that the projection method is as shown on the upper left, then the following four conditions may occur:

1. If there is a vertical trapezoid that is large in size and small in size, it means that the projection lens (front of the fuselage) is partly upturned;

2. If there is a small upper and a lower upper part, it means that the projection lens (front of the fuselage) is partly crooked down;

3. If the left side is big and the right side is small, it means that the left side of the projector is far away from the projector and the right side is near. Standing at the back of the fuselage and looking at it is equivalent to turning more counterclockwise in the standard position

4. If the left side is big and the right side is small, it means that the right side of the projector is far away from the projector, and the left side is near.

The above problems arise, as long as you return to the most standard position in the opposite direction. Of course, the two problems may be superimposed on the trapezoid, which seems to be more troublesome. The four sides are crooked. At this time, you only need to press the top and bottom, and the left and right parallel to get one of them, and then the other one is OK.

 

[vivian334]

Thanks for sharing