JP2016031405A - 投射光学系及び投射型画像表示装置 - Google Patents
投射光学系及び投射型画像表示装置 Download PDFInfo
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- JP2016031405A JP2016031405A JP2014152641A JP2014152641A JP2016031405A JP 2016031405 A JP2016031405 A JP 2016031405A JP 2014152641 A JP2014152641 A JP 2014152641A JP 2014152641 A JP2014152641 A JP 2014152641A JP 2016031405 A JP2016031405 A JP 2016031405A
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- Prior art keywords
- lens
- lens frame
- diaphragm
- optical system
- projection optical
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0988—Diaphragms, spatial filters, masks for removing or filtering a part of the beam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Lens Barrels (AREA)
Abstract
Description
Claims (9)
- 複数のレンズと、
前記複数のレンズのうち少なくとも1つのレンズを保持するレンズ枠と、
前記レンズ枠の光入射側に設けられた第1絞りと、
前記レンズ枠の光射出側に設けられた第2絞りと、を備える投射光学系。 - 前記レンズ枠を支持するレンズ枠支持体をさらに備え、
前記レンズ枠は、前記第1絞りを支持する第1絞り支持部と、前記レンズ枠を前記レンズ枠支持体に連結するための連結部とを有し、
前記レンズの光軸に平行な方向から見たとき、前記第1絞り支持部と前記連結部とは前記レンズの周方向に関して異なる位置に設けられている、請求項1に記載の投射光学系。 - 前記レンズ枠を支持するレンズ枠支持体をさらに備え、
前記レンズ枠は、前記第2絞りを支持する第2絞り支持部と、前記レンズ枠を前記レンズ枠支持体に連結するための連結部とを有し、
前記レンズの光軸に平行な方向から見たとき、前記第2絞り支持部と前記連結部とは前記レンズの周方向に関して異なる位置に設けられている、請求項1又は2に記載の投射光学系。 - 前記レンズ枠の光射出側の開口の内径は、前記少なくとも1つのレンズの有効径より大きく、
前記第1絞りの開口の内径は、前記レンズ枠の光入射側の開口の内径より小さく、
前記第2絞りの開口の内径は、前記レンズ枠の光射出側の開口の内径より小さい、請求項1〜3のいずれか一項に記載の投射光学系。 - 前記第1絞り及び前記第2絞りのうち少なくとも一方は、前記レンズ枠から離間している、請求項1〜4のいずれか一項に記載の投射光学系。
- 前記複数のレンズはズーム機能を有する、請求項1〜5に記載のいずれか一項に記載の投射光学系。
- 前記第1絞り及び前記第2絞りのうち少なくとも一方は、金属からなる、請求項1〜6のいずれか一項に記載の投射光学系。
- 前記第1絞り及び前記第2絞りのうち少なくとも一方は、耐熱性の固定部材によって前記レンズ枠に固定されている、請求項1〜7のいずれか一項に記載の投射光学系。
- 請求項1〜8のいずれか一項に記載の投射光学系と、
前記投射光学系の前段に設けられた像形成光学部とを備える、投射型画像表示装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014152641A JP6496994B2 (ja) | 2014-07-28 | 2014-07-28 | 投射光学系及び投射型画像表示装置 |
US14/801,100 US9696614B2 (en) | 2014-07-28 | 2015-07-16 | Projection optical system and projection-type image display device |
Applications Claiming Priority (1)
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---|---|---|---|
JP2014152641A JP6496994B2 (ja) | 2014-07-28 | 2014-07-28 | 投射光学系及び投射型画像表示装置 |
Publications (2)
Publication Number | Publication Date |
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JP2016031405A true JP2016031405A (ja) | 2016-03-07 |
JP6496994B2 JP6496994B2 (ja) | 2019-04-10 |
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JP2014152641A Active JP6496994B2 (ja) | 2014-07-28 | 2014-07-28 | 投射光学系及び投射型画像表示装置 |
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US (1) | US9696614B2 (ja) |
JP (1) | JP6496994B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017047517A1 (ja) * | 2015-09-17 | 2017-03-23 | 富士フイルム株式会社 | 投射レンズ、プロジェクタ及びその画像劣化防止方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7257971B2 (en) | 2000-07-31 | 2007-08-21 | Autronics Plastics Inc. | Case with internal lock |
JP6377252B2 (ja) * | 2015-03-31 | 2018-08-22 | 富士フイルム株式会社 | プロジェクタ |
TWI768422B (zh) * | 2020-07-31 | 2022-06-21 | 大立光電股份有限公司 | 影像鏡片組、變焦取像裝置及電子裝置 |
CN113075846B (zh) * | 2020-12-23 | 2022-07-15 | 深圳市安华光电技术有限公司 | 光机及投影仪 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006011313A (ja) * | 2004-06-29 | 2006-01-12 | Chinontec Kk | 投射レンズ装置及びプロジェクタ装置 |
JP2009116174A (ja) * | 2007-11-08 | 2009-05-28 | Olympus Corp | ゴースト低減装置およびこれを備えた電子カメラ |
JP2010197886A (ja) * | 2009-02-27 | 2010-09-09 | Olympus Imaging Corp | 光学絞り |
JP2014059333A (ja) * | 2012-09-14 | 2014-04-03 | Ricoh Co Ltd | 投射光学系鏡筒 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US5442484A (en) | 1992-01-06 | 1995-08-15 | Mitsubishi Denki Kabushiki Kaisha | Retro-focus type lens and projection-type display apparatus |
JP2981497B2 (ja) | 1992-01-06 | 1999-11-22 | 三菱電機株式会社 | レトロフォーカス型レンズ |
JP4666900B2 (ja) | 2003-10-23 | 2011-04-06 | キヤノン株式会社 | 投射レンズ鏡筒および投射型画像表示装置 |
JP2010243542A (ja) | 2009-04-01 | 2010-10-28 | Seiko Epson Corp | プロジェクター |
JP5455572B2 (ja) * | 2009-11-16 | 2014-03-26 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
JP2012083623A (ja) * | 2010-10-13 | 2012-04-26 | Sanyo Electric Co Ltd | プロジェクタ |
JP2012189837A (ja) | 2011-03-11 | 2012-10-04 | Canon Inc | 投射レンズ |
JP2013029569A (ja) * | 2011-07-27 | 2013-02-07 | Seiko Epson Corp | 投写光学系及びこれを備えるプロジェクター |
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- 2014-07-28 JP JP2014152641A patent/JP6496994B2/ja active Active
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2015
- 2015-07-16 US US14/801,100 patent/US9696614B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006011313A (ja) * | 2004-06-29 | 2006-01-12 | Chinontec Kk | 投射レンズ装置及びプロジェクタ装置 |
JP2009116174A (ja) * | 2007-11-08 | 2009-05-28 | Olympus Corp | ゴースト低減装置およびこれを備えた電子カメラ |
JP2010197886A (ja) * | 2009-02-27 | 2010-09-09 | Olympus Imaging Corp | 光学絞り |
JP2014059333A (ja) * | 2012-09-14 | 2014-04-03 | Ricoh Co Ltd | 投射光学系鏡筒 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017047517A1 (ja) * | 2015-09-17 | 2017-03-23 | 富士フイルム株式会社 | 投射レンズ、プロジェクタ及びその画像劣化防止方法 |
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Publication number | Publication date |
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JP6496994B2 (ja) | 2019-04-10 |
US20160025954A1 (en) | 2016-01-28 |
US9696614B2 (en) | 2017-07-04 |
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