| 摘要 |
The device for correcting the change of wavelength of a hologram scanner has a laser diode 1 for emitting laser; a hologram scan disc 2 for diffracting the laser emitted from the laser diode 1; a plane reflector 4 for reflecting the laser beam diffracted by the hologram scan disc; a curved surface reflector 5 and a correcting hologram 6 for sending the laser beam reflected by the plane reflector to a photosensitive drum; and a reflector controller for changing the reflecting angle of the laser beam emitted to the plane reflector according to the surrounding temperature.
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