LASER SCANNING UNIT CAPABLE OF CORRECTING A VARIATION OF FOCAL LENGTH DUE TO A VARIATION OF TEMPERATURE

摘要

The present invention will automatically compensate for changes in the focal length of the optical system due to the temperature increase inside the optical scanning device scanning devices that will be on . According to one aspect of the invention, the light emitted from the light source to scan on the photosensitive face value Guangzhou CEO phase , the light emitted from the light source by positioning and fixing the respective components of the optical system for image formation on the photosensitive face , in accordance with a temperature change to automatically compensate for changes in the focal length of the optical system as a function of temperature ; and a holding member for changing the distance between the respective parts .