| 摘要 |
FIELD: laser-projection engineering. ^ SUBSTANCE: device has laser, two mirrors, power unit, control unit, resilient flexible member. First mirror is fixed onto resilient flexible member. Electromagnetic field of first electromagnet induces oscillations and keeps, by means of metal member, frequency of resilient flexible member being resonant to frequency of first mirror. First mirror oscillates in horizontal plane. Second mirror is fixed onto other resilient flexible member. Electromagnetic field of the second electromagnet induces oscillation and helps to keep, by mean of other metal member, frequency of oscillations of other flexible resilient member being resonant to frequency of second mirror. Second mirror oscillates in vertical plane. Frequency of oscillations of first mirror is n times higher than frequency of oscillations of the second mirror, where n is number of light projection points in vertical. Laser switches on and off during oscillation of first and second mirrors to form light projection points. According to another version of the device, the first mirror oscillates in vertical plane and the second mirror does in horizontal plane. Digital and textual data can be output onto screen, as well as drawings and pictures. Operative changes in data projected can be made by means of keyboard. ^ EFFECT: improved efficiency. ^ 23 cl, 1 dwg |
