JP2010152263A5 - - Google Patents

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Publication number
JP2010152263A5
JP2010152263A5 JP2008332966A JP2008332966A JP2010152263A5 JP 2010152263 A5 JP2010152263 A5 JP 2010152263A5 JP 2008332966 A JP2008332966 A JP 2008332966A JP 2008332966 A JP2008332966 A JP 2008332966A JP 2010152263 A5 JP2010152263 A5 JP 2010152263A5
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JP
Japan
Prior art keywords
light
screen
area
region
right lower
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Application number
JP2008332966A
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Japanese (ja)
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JP5309980B2 (en
JP2010152263A (en
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Publication date
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Priority to JP2008332966A priority Critical patent/JP5309980B2/en
Priority claimed from JP2008332966A external-priority patent/JP5309980B2/en
Priority to US12/642,280 priority patent/US8434878B2/en
Priority to CN200910258848.3A priority patent/CN101770146B/en
Publication of JP2010152263A publication Critical patent/JP2010152263A/en
Publication of JP2010152263A5 publication Critical patent/JP2010152263A5/ja
Priority to US13/858,787 priority patent/US8794772B2/en
Application granted granted Critical
Publication of JP5309980B2 publication Critical patent/JP5309980B2/en
Active legal-status Critical Current
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Description

ここで、図8に示すように、スクリーン10に投写される光の光量低下が顕著となるのは、左右下端部分に投写される光である。そして、図9に示すように、スクリーン10の左右下端に投写される光(u,v,x,y点)は、防塵カバー204の第2領域16bとして設定された領域に入射し、それ以外のスクリーン10部分に投射される光(光量低下が顕著とならない光)は、ほとんどが防塵カバー204の第1領域16aとして設定された領域に入射する。
Here, as shown in FIG. 8 , it is the light projected on the left and right lower end portions that the light amount of the light projected onto the screen 10 is significantly reduced. As shown in FIG. 9, the light (u, v, x, y points) projected on the left and right lower ends of the screen 10 enters the region set as the second region 16 b of the dustproof cover 204, and the others Most of the light projected onto the screen 10 portion (light whose light amount does not significantly decrease) enters the region set as the first region 16 a of the dust cover 204.

実施例で説明した防塵カバー4のように細かい領域設定をすれば、より多くの投写光をスクリーン10に到達させることができるが、本変形例1のように防塵カバー204の入射面を長手方向に3つに区分して領域を設定した場合でも、観察者に光量の低下を感じさせないようにすることができる。また、細かく領域を設定する場合に比べて、反射防止膜等の処理・加工が容易となり、コストの抑制を図ることができる。
If a fine area is set as in the dustproof cover 4 described in the embodiment, more projection light can reach the screen 10 , but the incident surface of the dustproof cover 204 is set in the longitudinal direction as in the first modification. Even when the area is divided into three areas, it is possible to prevent the observer from feeling a decrease in the amount of light. In addition, the processing and processing of the antireflection film and the like can be facilitated and costs can be reduced as compared with the case where the region is set finely.

ここで、図8に示すように、スクリーン10に投写される光の光量低下が顕著となるのは、左右下端部分に投写される光である。そして、図9に示すように、スクリーン10の左右下端に投写される光(u,v,x,y点)は、防塵カバー404の第2領域18bとして設定された領域に入射し、それ以外のスクリーン10部分に投射される光(光量低下が顕著とならない光)は、ほとんどが防塵カバー404の第1領域18aとして設定された領域に入射する。

Here, as shown in FIG. 8 , it is the light projected on the left and right lower end portions that the light amount of the light projected onto the screen 10 is significantly reduced. As shown in FIG. 9, the light (u, v, x, y points) projected on the left and right lower ends of the screen 10 is incident on the area set as the second area 18b of the dust cover 404, and the others. Most of the light projected onto the screen 10 portion (light whose light amount does not significantly decrease) enters the area set as the first area 18 a of the dust cover 404.

JP2008332966A 2008-12-26 2008-12-26 projector Active JP5309980B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2008332966A JP5309980B2 (en) 2008-12-26 2008-12-26 projector
US12/642,280 US8434878B2 (en) 2008-12-26 2009-12-18 Proximity projector with a transmissive cover with modified reflectance properties
CN200910258848.3A CN101770146B (en) 2008-12-26 2009-12-25 Projector
US13/858,787 US8794772B2 (en) 2008-12-26 2013-04-08 Proximity projector having a dust-proof cover with an anti-reflection film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008332966A JP5309980B2 (en) 2008-12-26 2008-12-26 projector

Publications (3)

Publication Number Publication Date
JP2010152263A JP2010152263A (en) 2010-07-08
JP2010152263A5 true JP2010152263A5 (en) 2012-01-19
JP5309980B2 JP5309980B2 (en) 2013-10-09

Family

ID=42571394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008332966A Active JP5309980B2 (en) 2008-12-26 2008-12-26 projector

Country Status (1)

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JP (1) JP5309980B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5544711B2 (en) * 2008-12-26 2014-07-09 セイコーエプソン株式会社 projector
JP5561087B2 (en) 2010-10-14 2014-07-30 株式会社リコー Image projection device
US8901472B2 (en) * 2011-08-16 2014-12-02 Ricoh Company, Ltd. Image displaying apparatus including a projection optical system and a reflective image display element with plural micro-mirrors
JP6007478B2 (en) * 2011-11-02 2016-10-12 株式会社リコー Image display device
JP6167492B2 (en) * 2012-09-18 2017-07-26 株式会社リコー Image display device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193701A (en) * 1987-10-05 1989-04-12 Mitsubishi Electric Corp Optical device
JP3972956B2 (en) * 2000-01-28 2007-09-05 セイコーエプソン株式会社 projector
JP2005316250A (en) * 2004-04-30 2005-11-10 Fujinon Corp Projector
JP2007011248A (en) * 2005-05-31 2007-01-18 Victor Co Of Japan Ltd Projection type display apparatus
JP2007214078A (en) * 2006-02-13 2007-08-23 Seiko Epson Corp Light source device, and projector
JP5181637B2 (en) * 2006-12-04 2013-04-10 株式会社リコー Image projection device

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