JPH0264959U

JPH0264959U -

Info

Publication number: JPH0264959U
Application number: JP9243788U
Authority: JP
Priority date: 1988-06-17
Filing date: 1988-07-14
Publication date: 1990-05-16

Description

[Brief explanation of drawings]

第１図ａ，ｂは本考案の基本構成を示す実施例
の分解斜視図及び断面図、第２図ａ，ｂは本考案
の他の実施例の同様の図、第３図ａ，ｂは本考案
の更に他の実施例の同様の図、第４図は本考案の
更に他の実施例の分解斜視図、第５図及び第６図
は夫々長尺シリンドリカルレンズを光学ハウジン
グ開口の窓板に兼用する場合に適用した本考案の
実施例を示す分解斜視図、第７図はレーザプリン
タの書込光学系の１例を示す斜視図、第８図はそ
のｆ―θレンズのハウジングへの固定手段を示す
分解斜視図、第９図はその断面図、第１０図は上
記書込光学系の光学要素をハウジングへ取付けた
状態の１例を示す斜視図、第１１図ａ，ｂは従来
のレンズ固定手段の他の例の斜視図及び断面図で
ある。６，８……レンズ、６―１，８―１……スナツ
プフイツト突起、１１……光学ハウジング、１１
―１……掛止孔、６―２，８―２……ガイドピン
、８―５……押え部、１１―３……ガイド孔、１
１―４……掛止部。 Figures 1a and b are exploded perspective views and sectional views of an embodiment showing the basic structure of the present invention, Figures 2a and b are similar views of other embodiments of the invention, and Figures 3a and b are Similar views of still another embodiment of the present invention, FIG. 4 is an exploded perspective view of still another embodiment of the present invention, and FIGS. FIG. 7 is an exploded perspective view showing an example of the writing optical system of a laser printer, and FIG. 8 is an exploded perspective view showing an example of the writing optical system of a laser printer. FIG. 9 is an exploded perspective view showing the fixing means, FIG. 9 is a sectional view thereof, FIG. 10 is a perspective view showing an example of the state in which the optical elements of the writing optical system are attached to the housing, and FIGS. 11a and b are conventional FIG. 6 is a perspective view and a sectional view of another example of the lens fixing means of FIG. 6, 8... Lens, 6-1, 8-1... Snap fitting protrusion, 11... Optical housing, 11
-1... Latching hole, 6-2, 8-2... Guide pin, 8-5... Holding part, 11-3... Guide hole, 1
1-4...Latching part.

Claims

[Claims for Utility Model Registration] (1) In an optical device comprising optical elements each including a plastic lens fixed at a predetermined position in an optical housing, at least one of the plastic lenses mentioned above is attached to the optical housing. An optical device characterized in that the fixing means comprises a snap-fit protrusion formed integrally with the plastic lens and a latching hole for the snap-fit protrusion provided at a corresponding position on the optical housing. (2) The above lens is a long cylindrical lens that also serves as a window plate for the exit window from the optical housing of the writing optical system of the laser printer, and the lens has at least one set of snap-fit protrusions perpendicular to the generatrix of the lens. 2. The optical device according to claim 1, wherein the optical device is integrally provided in a direction protruding from the housing and is detachably attached to the housing.