| 摘要 |
PURPOSE: A device for converting image into electronic signal is provided to control the length of beam paths by changing the relative position of a mirror(24) on a support arm through the remote control of a control unit(30). CONSTITUTION: A device for converting image into electronic signal comprises a camera(14)having a first lens(1), a light source(16) having a second lens(3), a first mirror(21), and at least one second mirror(22) mounted to be rotated about a joint(24a) on a support arm(24). Two mirrors(21,22) deflect two beam paths adjusted by the light source and camera and arranged between a project area(10) and two lenses(1,3). The relative position of the second mirror(22) causes the length of the beam path to be changed on the support arm(24).
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