| 摘要 |
PURPOSE: To provide an inexpensive optical axis sensor. CONSTITUTION: This sensor is equipped with a lighting surface 2 formed into a semispherical shape, a plate 3 having symmetrical form arranged on the lighting surface 2 set up so as to have its center over lap with the enter axis of the lighting surface 2, a light receiving means 4 set up on a light receiving surface to the lighting surface 2, and an arithmetic storage means (hereinafter referred to as CPU-central processing unit) 5 such as a microcomputer or where output of this light receiving means 4 is inputted, and in this constitution, the sunlight inclusive of a shadow of the plate being incident into the lighting surface is irradiated to the light receiving means 4, whereby an angle of an optical axis is detected on the basis of a light receiving image to be inputted into the CPU 5. In place of this lighting surface 2, such a version that a circular lighting surface equipped with a symmetrical-form plate and a light conducting cylinder to be connected to it are installed and so on, is considerable. |
