| 摘要 |
A scanning system mainly consists of a condenser, a rotating mirror, and a ringlike lens. Collimating laser beams shine the condenser in designative position and the leaving beam combined to one powerful beam, or the leaving beams extremely close together. Therefore, the intensity increases greatly. Then, laser beams reflect on a rotating mirror. Along with the rotation of the mirror inside spiral, the mirror moves up and down along the appointed angle line in the effective range. After that, the beams refract in the ringlike lens. The direction of the mirror's normal and the position of the mirror change continuously, so the reflective beams can have different directions and leaving positions. The ringlike lens can refract the laser beams coming from the mirror with varied directions and positions because of the ringlike shape. This system can nearly cover whole space round it. In combination with all improved elements of the system, functions of wide, adjustable scanning area are achieved. To design, the system should require much more optics. Here, we lay emphasis on main parts of the system.
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