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

Claim 3:
4. The method for manufacturing scanning optical systems according to claim 1, wherein in the step of adjusting a size and a position of the scanning lens so as to adjust the lateral magnification in the cross section in the sub-scanning direction of the imaging optical system, the lateral magnification is adjusted such that a relationship

0≤|ΔD|≤4.35 mm  (5), holds, where

|ΔD|

represents a maximum absolute value of difference between an amount of curvature of field of a first optical scanning system in the cross section in the sub-scanning direction and an amount of curvature of field of a second optical scanning system in the cross section in the sub-scanning direction.