JPH0290802U - - Google Patents
Info
- Publication number
- JPH0290802U JPH0290802U JP17026888U JP17026888U JPH0290802U JP H0290802 U JPH0290802 U JP H0290802U JP 17026888 U JP17026888 U JP 17026888U JP 17026888 U JP17026888 U JP 17026888U JP H0290802 U JPH0290802 U JP H0290802U
- Authority
- JP
- Japan
- Prior art keywords
- prism
- dichroic prism
- exit surface
- view
- light
- 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
- 230000003287 optical effect Effects 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図ａはこの考案の第１実施例によるダイク
ロイツクプリズムの平面図、第１図ｂは同ダイク
ロイツクプリズムのＧ用液晶表示パネル方向の側
面図、第１図ｃは同ダイクロイツクプリズムのＢ
用液晶表示パネル方向の側面図、第２図は同ダイ
クロイツクプリズムの入射面および射出面での光
の入射状態および光の射出状態を示した断面図、
第３図ａは同第２実施例によるダイクロイツクプ
リズムの平面図、第３図ｂは同ダイクロイツクプ
リズムのＧ用液晶表示パネル方向の側面図、第３
図Ｃは同ダイクロイツクプリズムのＢ用液晶表示
パネル方向の側面図、第４図は従来の３板式液晶
プロジエクタの概略構成図、第５図は同３板式液
晶プロジエクタにおけるダイクロイツクプリズム
の入射面での光の入射状態、射出面での光の射出
状態および投影レンズの入射面での光の入射状態
を示した模式図である。
１，１′……ダイクロイツクプリズム、２ａ，
２ａ′，３ａ，３ａ′，４ａ，４ａ′……入射面
、５ａ，５ａ′……射出面、ａ１〜ａ２……反射
光。
FIG. 1a is a plan view of a dichroic prism according to the first embodiment of this invention, FIG. 1b is a side view of the dichroic prism in the direction of the G liquid crystal display panel, and FIG. B
2 is a cross-sectional view showing the incident state of light and the state of light exit from the entrance surface and exit surface of the dichroic prism,
FIG. 3a is a plan view of the dichroic prism according to the second embodiment, FIG. 3b is a side view of the dichroic prism in the direction of the G liquid crystal display panel, and FIG.
Figure C is a side view of the same dichroic prism in the direction of the B liquid crystal display panel, Figure 4 is a schematic configuration diagram of a conventional three-panel liquid crystal projector, and Figure 5 is the entrance plane of the dichroic prism in the same three-panel liquid crystal projector. FIG. 2 is a schematic diagram showing the incident state of light, the exit state of light on the exit surface, and the incidence state of light on the entrance surface of the projection lens. 1,1'...dichroic prism, 2a,
2a', 3a, 3a', 4a, 4a'...Incidence surface, 5a, 5a'...Emission surface, a1 to a2 ...Reflected light.
Claims (1)
れの入射面又は射出面で反射する光が光路外に導
かれる角度を有する傾斜面としたことを特徴とす
るダイクロイツクプリズム。 A dichroic prism characterized in that a prism entrance surface and a prism exit surface are inclined surfaces having an angle such that light reflected by the respective entrance surface or exit surface is guided out of the optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17026888U JPH0290802U (en) | 1988-12-30 | 1988-12-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17026888U JPH0290802U (en) | 1988-12-30 | 1988-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290802U true JPH0290802U (en) | 1990-07-18 |
Family
ID=31461065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17026888U Pending JPH0290802U (en) | 1988-12-30 | 1988-12-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290802U (en) |
-
1988
- 1988-12-30 JP JP17026888U patent/JPH0290802U/ja active Pending
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