JPS6271610U

JPS6271610U -

Info

Publication number: JPS6271610U
Application number: JP1985163828U
Authority: JP
Priority date: 1985-10-25
Filing date: 1985-10-25
Publication date: 1987-05-07

Description

[Brief explanation of the drawing]

第１図はこの考案に係るプロジエクタ用光学装
置をＣＲＴに取付けた状態を示す要部側面図、第
２図ａ及びｂは夫々この考案に係るプロジエクタ
用光学装置の封印手段を構成する円筒シール体及
び角形シール体を示す概略斜視図、第３図はこの
考案にかかるプロジエクタ用光学装置の保持体を
示す概略斜視図、第４図はこの考案に係るプロジ
エクタ用光学装置のレンズホルダを示す概略斜視
図、第５図はこの考案に係るプロジエクタ用光学
装置の変形例を示す要部断面図、第６図ａ及びｂ
は夫々プロジエクタを示す概略構成図及びＡ―Ａ
矢視図、第７図は従来型のプロジエクタ用光学装
置の構成を示す分解図、第８図は従来型の封印手
段を示す斜視図である。７……ＣＲＴ、４……ＣＲＴホルダ、５……レ
ンズ群、３……レンズホルダ、６……ＣＲＴレン
ズ、２……保持体、Ｌ……液体、１……封印手段
、１ａ……円筒シール体、１ｂ……角形シール体
、３ａ……（レンズホルダの）突出部、２ａ……
（保持体の）取付部、２ｂ……（保持体の）螺孔
、３ｂ……透孔。 FIG. 1 is a side view of the essential parts showing the optical device for a projector according to this invention attached to a CRT, and FIG. FIG. 3 is a schematic perspective view showing a holder of an optical device for a projector according to this invention, and FIG. 4 is a schematic perspective view showing a lens holder of an optical device for a projector according to this invention. Fig. 5 is a sectional view of a main part showing a modification of the optical device for a projector according to this invention, and Fig. 6 a and b.
are a schematic configuration diagram and A-A showing the projector, respectively.
7 is an exploded view showing the structure of a conventional optical device for a projector, and FIG. 8 is a perspective view showing a conventional sealing means. 7...CRT, 4...CRT holder, 5...Lens group, 3...Lens holder, 6...CRT lens, 2...Holder, L...Liquid, 1...Sealing means, 1a...Cylinder Seal body, 1b... Square seal body, 3a... Projection (of lens holder), 2a...
Mounting part (of the holding body), 2b...screw hole (of the holding body), 3b...through hole.

Claims

[Claims for Utility Model Registration] 1. A CRT holder fixed to a fixed part of a CRT, a lens group consisting of a plurality of lenses, and a lens holder that fixes and holds this lens group and is screwed onto the CRT holder. , a CRT lens located between the front side of the CRT and the lens group; a holder provided between the CRT holder and the lens holder to fix and hold the CRT lens; a CRT lens, a CRT holder, and A liquid is filled in the space formed by the front surface of the CRT and has the same refractive index as the CRT lens, and this liquid is filled between the CRT lens and the CRT holder and between the CRT front surface and the CRT.
An optical device for a projector that enlarges and projects an image on a CRT screen onto the screen, comprising a sealing means disposed to prevent leakage from between the CRT lens and the holder, wherein the sealing means is arranged between the CRT lens and the CRT. A cylindrical seal body that prevents the liquid from leaking, and a square seal body that prevents the liquid from leaking from between the CRT front side and the CRT holder, and the holding body is placed on the outside of the lens holder. 1. An optical device for a projector, characterized in that a through hole is formed at a position corresponding to a screw hole formed in the holder of the lens holder for fine adjustment. 2 Utility model registration claim 1, in which a protrusion is formed by making the proximal outer edge protrusion of the lens holder protrude to have substantially the same dimension as the wall thickness of the attachment part of the holder.
An optical device for a projector as described in . 3. The optical device for a projector according to claim 1, wherein the outer surface of the proximal end of the lens holder is formed into a flat surface.