1. Field of the Invention
The present invention relates to a holding apparatus; in particular, the present invention relates to a holding apparatus for a projector that can adjust the position of a laser source according to the disposing surface.
2. Description of the Prior Art
Projection device has the advantage of outputting large size image. With the technical development of the image quality, projectors have been widely used in conference rooms, exhibitions, or classrooms. There are some products combining the projector with a laser touch module for users to write directly on the projection image. Specifically, the technology uses a laser touch module generating laser beams to form a laser screen which covers the projection image. When an object touches the projection image, the laser beams will be reflected. The lens of the projector will identify the relative position to achieve the direct writing operation.
However, the present products combining projectors with the laser touch module require the laser touch module directly installed on a wall or at an inner side of a border of a white board. After deducting safety distance of the laser touch module, the laser screen cannot match the projection image. In other words, writing actions cannot be sensed at some locations on the projection image resulted from the configuration of the traditional laser touch module. When users write on the projection image, the writing actions may not be identified. As such, the present products combining projectors with the laser touch module need to be improved.