Patent ID: 11860357
Assignee: NALUX CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  B | IPC B  G  H

Claim 0:
1. A method for manufacturing scanning optical systems, by which the scanning optical systems with different effective scanning widths can be obtained by changing a polygon mirror alone without changing an imaging optical system including a scanning lens and an optical system for receiving light, the method comprising the steps of:
designing a first scanning optical system using a first polygon mirror corresponding to a first value of effective scanning width;
designing a second scanning optical system provided with a second polygon mirror corresponding to a second value of effective scanning width, the second value being smaller than the first value, wherein a reference point of deflection is located at a position of the reference point of deflection of the first scanning optical system, the reference point of deflection being a point of reflection on a reflecting surface of a ray of light when an angle of deflection of a reflected ray is 0; and
adjusting a size and a position of the scanning lens so as to adjust a lateral magnification in a cross section in a sub-scanning direction of the imaging optical system.