JPS6459226A - Projection type projector - Google Patents
Projection type projectorInfo
- Publication number
- JPS6459226A JPS6459226A JP62215457A JP21545787A JPS6459226A JP S6459226 A JPS6459226 A JP S6459226A JP 62215457 A JP62215457 A JP 62215457A JP 21545787 A JP21545787 A JP 21545787A JP S6459226 A JPS6459226 A JP S6459226A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- curvature
- reflection
- image
- 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.)
- Granted
Links
Landscapes
- Projection Apparatus (AREA)
Abstract
PURPOSE:To make a space compact while holding the light emitting efficiency of an image on a light source side by enlarging and projecting the reduction of a vertical amplitude with the curvature of a reflection mirror and correcting the increase of a trapezoid modulating rate with the curvature of the reflection mirror. CONSTITUTION:Image light from the light source 1 is made incident on a mirror 3 after it is enlarged in a specified magnification by an optical system 2. The mirror 3 is a mirror constituted of cubic curved surface, in which one mirror works as two mirrors. Namely, the curvature of the mirror is adjusted so that the reduction of the vertical amplitude and the increase of the trapezoid modulating rate can be corrected with one reflection. Then, the excellent image can be observed on a screen 5 since the reflected light from the mirror 3 is corrected as stated above and made incident on the screen 5 through a prism 4. Thus, the space can be made compact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215457A JP2659542B2 (en) | 1987-08-31 | 1987-08-31 | Rear projection type projection TV |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215457A JP2659542B2 (en) | 1987-08-31 | 1987-08-31 | Rear projection type projection TV |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6459226A true JPS6459226A (en) | 1989-03-06 |
JP2659542B2 JP2659542B2 (en) | 1997-09-30 |
Family
ID=16672687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62215457A Expired - Lifetime JP2659542B2 (en) | 1987-08-31 | 1987-08-31 | Rear projection type projection TV |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2659542B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030001185A (en) * | 2001-06-27 | 2003-01-06 | 최해용 | Capsule type projection system. |
JP2005043681A (en) * | 2003-07-22 | 2005-02-17 | Canon Inc | Projection display apparatus |
US7101052B2 (en) | 2001-09-04 | 2006-09-05 | Canon Kabushiki Kaisha | Projection optical system and optical system |
JP2006343526A (en) * | 2005-06-09 | 2006-12-21 | Nec Engineering Ltd | Rear projection display apparatus |
KR100708520B1 (en) * | 2004-01-16 | 2007-04-16 | 최해용 | Multi projecton system |
WO2009057522A1 (en) * | 2007-10-30 | 2009-05-07 | Konica Minolta Opto, Inc. | Scan type projection device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4972245U (en) * | 1972-10-05 | 1974-06-22 | ||
JPS6119232U (en) * | 1984-07-06 | 1986-02-04 | 双葉電子工業株式会社 | Reflector for overhead projector |
-
1987
- 1987-08-31 JP JP62215457A patent/JP2659542B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4972245U (en) * | 1972-10-05 | 1974-06-22 | ||
JPS6119232U (en) * | 1984-07-06 | 1986-02-04 | 双葉電子工業株式会社 | Reflector for overhead projector |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030001185A (en) * | 2001-06-27 | 2003-01-06 | 최해용 | Capsule type projection system. |
US7101052B2 (en) | 2001-09-04 | 2006-09-05 | Canon Kabushiki Kaisha | Projection optical system and optical system |
US7182466B2 (en) | 2001-09-04 | 2007-02-27 | Canon Kabushiki Kaisha | Projection optical system and optical system |
JP2005043681A (en) * | 2003-07-22 | 2005-02-17 | Canon Inc | Projection display apparatus |
KR100708520B1 (en) * | 2004-01-16 | 2007-04-16 | 최해용 | Multi projecton system |
JP2006343526A (en) * | 2005-06-09 | 2006-12-21 | Nec Engineering Ltd | Rear projection display apparatus |
WO2009057522A1 (en) * | 2007-10-30 | 2009-05-07 | Konica Minolta Opto, Inc. | Scan type projection device |
JPWO2009057522A1 (en) * | 2007-10-30 | 2011-03-10 | コニカミノルタオプト株式会社 | Scanning projector |
Also Published As
Publication number | Publication date |
---|---|
JP2659542B2 (en) | 1997-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080606 Year of fee payment: 11 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080606 Year of fee payment: 11 |