Abstract: The invention relates to a scanner for an oral cavity comprising: an optical output unit for outputting a line laser beam; a first optical system for reflecting the line laser beam output from the optical output unit to a scanning target tooth; an optical sensing unit for sensing the line laser beam reflected again by the first optical system after reflected from the scanning target tooth; and a control unit for controlling operations of the optical output unit and the first optical system. The control unit controls the reflection angle and position of the first optical system.

Abstract: The invention relates to a scanner for an oral cavity comprising: an optical output unit for outputting a line laser beam; a first optical system for reflecting the line laser beam output from the optical output unit to a scanning target tooth; an optical sensing unit for sensing the line laser beam reflected again by the first optical system after reflected from the scanning target tooth; and a control unit for controlling operations of the optical output unit and the first optical system. The control unit controls the reflection angle and position of the first optical system.

Abstract: An intra-oral scanner includes an optical output unit; an optical output control unit configured to rotate the optical output unit along a first reference axis or moves the optical output unit so as to control an emission position of the output light; an optical system configured to reflect the output light with the emission position controlled by the optical output control unit to a tooth or teeth being scanned; an optical system driving unit configured to rotate the optical system along a second reference axis so as to control a reflection angle of the output light; a guide; an optical sensing unit configured to sense the light reflected by the optical system and convert the sensed light into an electrical signal; and a data transmitting unit configured to transmit information to a three-dimensional data generating unit to generate three-dimensional scanning model for the tooth or teeth being scanned.