JPH0171711U

JPH0171711U -

Info

Publication number: JPH0171711U
Application number: JP1987165640U
Authority: JP
Priority date: 1987-10-29
Filing date: 1987-10-29
Publication date: 1989-05-15

Description

[Brief explanation of the drawing]

第１図は本考案に係る結像光学系の調整装置の
分解斜視図、第２図は同上調整装置の組立状態に
おける平面図、第３図は同上調整装置の正面図、
第４図は同上調整装置の側面図、第５図は同上調
整装置の変形実施例を説明した正面図、第６図は
本考案の実施に適する走査光学系の構成を説明し
た図である。２…レンズホルダ、６…保持部材、１３…偏心
ブツシユ、１４，２２…ばね、２０…調整ねじ、
２３…長穴、２４ａ…レンズホルダ載置面、２５
…位置決めピン。 FIG. 1 is an exploded perspective view of an adjusting device for an imaging optical system according to the present invention, FIG. 2 is a plan view of the adjusting device in an assembled state, and FIG. 3 is a front view of the adjusting device.
FIG. 4 is a side view of the above adjustment device, FIG. 5 is a front view illustrating a modified embodiment of the above adjustment device, and FIG. 6 is a diagram illustrating the configuration of a scanning optical system suitable for implementing the present invention. 2... Lens holder, 6... Holding member, 13... Eccentric bush, 14, 22... Spring, 20... Adjustment screw,
23...Elongated hole, 24a...Lens holder mounting surface, 25
…Positioning pin.

Claims

[Claims for Utility Model Registration] A light source, a first imaging optical system having a function of forming a line-shaped image of the light beam emitted from the light source,
A deflector that receives and deflects the light beam emitted from the first imaging optical system, and a second image forming device that has the function of forming an image on the scanned medium of the light beam deflected in the main scanning direction by the deflector. A scanning optical system having an optical system, comprising: a plate-shaped lens holder holding the first imaging optical system; a holding member for the lens holder having a bottom portion and a wall portion that are orthogonal to each other; a pressing means that elastically presses the lens holder against the wall; and a lens holder mounting surface that is parallel to a virtual plane that includes the optical axis of the first imaging optical system and extends in the main scanning direction. an apparatus main body comprising: an optical axis direction guide means for guiding the holding member placed on the lens holder mounting surface with the bottom thereof facing in the optical axis direction; and moving the holding member in the optical axis direction. a means for moving the lens holder in a plane perpendicular to the optical axis for swinging the lens holder on the wall; and a sub-scanning means for guiding the lens holder in a direction perpendicular to the lens holder mounting surface. The lens holder is characterized by having a guide means, and a sub-scanning moving means that urges the lens holder from one direction with a spring and presses it from the opposite direction with a tip of a screw to move it in a direction perpendicular to the lens holder mounting surface. Adjustment device for the imaging optical system in the scanning optical system.