JPS6271609U - - Google Patents
Info
- Publication number
- JPS6271609U JPS6271609U JP16382785U JP16382785U JPS6271609U JP S6271609 U JPS6271609 U JP S6271609U JP 16382785 U JP16382785 U JP 16382785U JP 16382785 U JP16382785 U JP 16382785U JP S6271609 U JPS6271609 U JP S6271609U
- Authority
- JP
- Japan
- Prior art keywords
- crt
- holder
- lens
- sealing
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Lens Barrels (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
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概略断面図、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ａ及び
ｂは夫々プロジエクタを示す概略斜視図、第４図
は、従来型のプロジエクタ用光学装置をＣＲＴに
取付けた状態を示す概略断面図、第５図は従来型
の封印手段を示す斜視図である。
符号説明、８……ＣＲＴ、２……ＣＲＴホルダ
、３……レンズ群、４……レンズホルダ、５……
ＣＲＴレンズ、６……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、２ａ……凹凸面。
FIG. 1 is a schematic sectional view showing a state in which the optical device for a projector according to this invention is attached to a CRT, and FIGS. FIGS. 3A and 3B are schematic perspective views showing a projector, FIG. 4 is a schematic cross-sectional view showing a conventional projector optical device attached to a CRT, and FIG. The figure is a perspective view showing a conventional sealing means. Explanation of symbols, 8...CRT, 2...CRT holder, 3...Lens group, 4...Lens holder, 5...
CRT lens, 6... Holder, L... Liquid, 1...
...Sealing means, 1a... Cylindrical seal body, 1b... Square seal body, 2a... Uneven surface.
Claims (1)
複数のレンズからなるレンズ群と、このレンズ群
を固定・保持し、そのＣＲＴに螺着されたレンズ
ホルダと、前記ＣＲＴ前面側とレンズ群との間に
位置するＣＲＴレンズと、このＣＲＴレンズを固
定・保持するため、前記ＣＲＴホルダとレンズホ
ルダとの間に設けられた保持体と、ＣＲＴレンズ
、ＣＲＴホルダ及びＣＲＴ前面によつて形成され
る空間に充填され、そのＣＲＴレンズと同一屈折
率を有する液体と、この液体がＣＲＴレンズとＣ
ＲＴホルダとの間並びにＣＲＴ前面とＣＲＴホル
ダとの間から漏洩しないように配設した封印手段
とを備え、ＣＲＴ画面上の画像をスクリーン上に
拡大・投射させるプロジエクタ用光学装置におい
て、 前記封印手段を、ＣＲＴレンズとＣＲＴとの間
から前記液体が漏洩するのを防止する円筒シール
体またはシール用粘性体と、前記ＣＲＴ前面側と
ＣＲＴホルダとの間からその液体が漏洩するのを
防止する角形シール体またはシール用粘性体とで
構成し、 前記ＣＲＴからＣＲＴホルダ開口部の内周面に
入射した光を散乱・減衰させるため、そのＣＲＴ
ホルダ内周面側に多数に凹凸面を形成したことを
特徴とするプロジエクタ用光学装置。[Claims for Utility Model Registration] A CRT holder fixed to a fixed part of a CRT;
A lens group consisting of a plurality of lenses, a lens holder that fixes and holds this lens group and is screwed onto the CRT, a CRT lens located between the front side of the CRT and the lens group, and this CRT lens. In order to fix and hold the CRT, the space formed by the holder provided between the CRT holder and the lens holder, the CRT lens, the CRT holder, and the front surface of the CRT is filled with a lens having the same refractive index as the CRT lens. This liquid has a CRT lens and C
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 holder and between the CRT front surface and the CRT holder, the sealing means a cylindrical sealing body or a sealing viscous body that prevents the liquid from leaking between the CRT lens and the CRT; and a rectangular shape that prevents the liquid from leaking between the front side of the CRT and the CRT holder. A sealing body or a sealing viscous body is used to scatter and attenuate the light incident on the inner peripheral surface of the CRT holder opening from the CRT.
An optical device for a projector, characterized in that a large number of uneven surfaces are formed on the inner peripheral surface of the holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16382785U JPS6271609U (en) | 1985-10-25 | 1985-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16382785U JPS6271609U (en) | 1985-10-25 | 1985-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271609U true JPS6271609U (en) | 1987-05-07 |
Family
ID=31092385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16382785U Pending JPS6271609U (en) | 1985-10-25 | 1985-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271609U (en) |
-
1985
- 1985-10-25 JP JP16382785U patent/JPS6271609U/ja active Pending
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