JPH10186232A - 投影レンズおよび投影レンズシステム - Google Patents
投影レンズおよび投影レンズシステムInfo
- Publication number
- JPH10186232A JPH10186232A JP9221636A JP22163697A JPH10186232A JP H10186232 A JPH10186232 A JP H10186232A JP 9221636 A JP9221636 A JP 9221636A JP 22163697 A JP22163697 A JP 22163697A JP H10186232 A JPH10186232 A JP H10186232A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- projection lens
- projection
- image
- refractive power
- 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
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 claims abstract description 19
- 230000004075 alteration Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000005286 illumination Methods 0.000 claims description 18
- 210000001747 pupil Anatomy 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 2
- 238000012937 correction Methods 0.000 abstract description 17
- 239000006185 dispersion Substances 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 description 26
- 229920003023 plastic Polymers 0.000 description 26
- 238000000034 method Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 206010010071 Coma Diseases 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 239000005308 flint glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000511976 Hoya Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- 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
- G02B15/142—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 two groups only
-
- 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
- G02B15/143—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 three groups only
- G02B15/1431—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 three groups only the first group being positive
- G02B15/143103—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 three groups only the first group being positive arranged ++-
-
- 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
- G02B15/143—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 three groups only
- G02B15/1431—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 three groups only the first group being positive
- G02B15/143105—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 three groups only the first group being positive arranged +-+
-
- 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
- G02B15/1441—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 the first group being positive
- G02B15/144111—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 the first group being positive arranged ++-+
-
- 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
- G02B15/1441—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 the first group being positive
- G02B15/144113—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 the first group being positive arranged +-++
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lenses (AREA)
- Transforming Electric Information Into Light Information (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2408396P | 1996-08-16 | 1996-08-16 | |
| US024083 | 1996-08-16 | ||
| US3726697P | 1997-01-31 | 1997-01-31 | |
| US037266 | 1997-01-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10186232A true JPH10186232A (ja) | 1998-07-14 |
| JPH10186232A5 JPH10186232A5 (cg-RX-API-DMAC7.html) | 2005-06-02 |
Family
ID=26698017
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9221636A Pending JPH10186232A (ja) | 1996-08-16 | 1997-08-18 | 投影レンズおよび投影レンズシステム |
| JP9221637A Pending JPH10186233A (ja) | 1996-08-16 | 1997-08-18 | 画素化パネル用小型ズーム投射レンズ |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9221637A Pending JPH10186233A (ja) | 1996-08-16 | 1997-08-18 | 画素化パネル用小型ズーム投射レンズ |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US6023375A (cg-RX-API-DMAC7.html) |
| EP (1) | EP0825474B1 (cg-RX-API-DMAC7.html) |
| JP (2) | JPH10186232A (cg-RX-API-DMAC7.html) |
| KR (1) | KR100465100B1 (cg-RX-API-DMAC7.html) |
| CN (2) | CN1147753C (cg-RX-API-DMAC7.html) |
| DE (1) | DE69726352T2 (cg-RX-API-DMAC7.html) |
Families Citing this family (70)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110716C (zh) * | 1996-04-29 | 2003-06-04 | 美国精密镜片股份有限公司 | 液晶显示投影透镜 |
| US5870228A (en) * | 1996-05-24 | 1999-02-09 | U.S. Precision Lens Inc. | Projection lenses having larger back focal length to focal length ratios |
| US6084719A (en) * | 1997-08-29 | 2000-07-04 | Canon Kabushiki Kaisha | Projection lens |
| KR100570392B1 (ko) | 1997-11-13 | 2006-04-11 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 화소 패널을 채용한 소형 투사 렌즈 시스템용 광시계투사렌즈 |
| JP2002519707A (ja) * | 1998-06-24 | 2002-07-02 | ユーエス プレシジョン レンズ インコーポレイテッド | 改良された変調伝達関数を備えた投映テレビジョンレンズ系 |
| US6301057B1 (en) | 1999-02-02 | 2001-10-09 | Corning Precision Lens | Long focal length projection lenses |
| US6195209B1 (en) | 1999-05-04 | 2001-02-27 | U.S. Precision Lens Incorporated | Projection lenses having reduced lateral color for use with pixelized panels |
| EP1054280A3 (en) * | 1999-05-20 | 2004-08-18 | Konica Corporation | Zoom lens |
| US6476974B1 (en) | 2001-02-28 | 2002-11-05 | Corning Precision Lens Incorporated | Projection lenses for use with reflective pixelized panels |
| US7002753B2 (en) * | 2004-06-02 | 2006-02-21 | 3M Innovative Properties Company | Color-corrected projection lenses for use with pixelized panels |
| US7009777B2 (en) * | 2004-06-02 | 2006-03-07 | 3M Innovative Properties Company | Compact projection lenses for use with large format pixelized panels |
| US7259801B2 (en) * | 2004-06-02 | 2007-08-21 | 3M Innovative Properties Company | Large-panel table-top rear projection television |
| GB0522968D0 (en) | 2005-11-11 | 2005-12-21 | Popovich Milan M | Holographic illumination device |
| GB0718706D0 (en) | 2007-09-25 | 2007-11-07 | Creative Physics Ltd | Method and apparatus for reducing laser speckle |
| CN101581823B (zh) * | 2008-05-13 | 2011-03-02 | 比亚迪股份有限公司 | 一种投影机镜头 |
| US11726332B2 (en) | 2009-04-27 | 2023-08-15 | Digilens Inc. | Diffractive projection apparatus |
| US9335604B2 (en) | 2013-12-11 | 2016-05-10 | Milan Momcilo Popovich | Holographic waveguide display |
| US11204540B2 (en) | 2009-10-09 | 2021-12-21 | Digilens Inc. | Diffractive waveguide providing a retinal image |
| WO2011162840A1 (en) | 2010-06-24 | 2011-12-29 | Bae Systems Information And Electronic Systems Integration, Inc. | Wide field athermalized orthoscopic lens system |
| WO2012136970A1 (en) | 2011-04-07 | 2012-10-11 | Milan Momcilo Popovich | Laser despeckler based on angular diversity |
| DE102011051120B9 (de) * | 2011-06-16 | 2012-08-30 | Jos. Schneider Optische Werke Gmbh | Kamera-Objektiv |
| EP2748670B1 (en) | 2011-08-24 | 2015-11-18 | Rockwell Collins, Inc. | Wearable data display |
| WO2016020630A2 (en) | 2014-08-08 | 2016-02-11 | Milan Momcilo Popovich | Waveguide laser illuminator incorporating a despeckler |
| US10670876B2 (en) | 2011-08-24 | 2020-06-02 | Digilens Inc. | Waveguide laser illuminator incorporating a despeckler |
| WO2013102759A2 (en) | 2012-01-06 | 2013-07-11 | Milan Momcilo Popovich | Contact image sensor using switchable bragg gratings |
| WO2013163347A1 (en) | 2012-04-25 | 2013-10-31 | Rockwell Collins, Inc. | Holographic wide angle display |
| WO2013167864A1 (en) | 2012-05-11 | 2013-11-14 | Milan Momcilo Popovich | Apparatus for eye tracking |
| US9933684B2 (en) * | 2012-11-16 | 2018-04-03 | Rockwell Collins, Inc. | Transparent waveguide display providing upper and lower fields of view having a specific light output aperture configuration |
| WO2014188149A1 (en) | 2013-05-20 | 2014-11-27 | Milan Momcilo Popovich | Holographic waveguide eye tracker |
| US9727772B2 (en) | 2013-07-31 | 2017-08-08 | Digilens, Inc. | Method and apparatus for contact image sensing |
| WO2016020632A1 (en) | 2014-08-08 | 2016-02-11 | Milan Momcilo Popovich | Method for holographic mastering and replication |
| WO2016042283A1 (en) | 2014-09-19 | 2016-03-24 | Milan Momcilo Popovich | Method and apparatus for generating input images for holographic waveguide displays |
| EP3198192A1 (en) | 2014-09-26 | 2017-08-02 | Milan Momcilo Popovich | Holographic waveguide opticaltracker |
| CN111323867A (zh) | 2015-01-12 | 2020-06-23 | 迪吉伦斯公司 | 环境隔离的波导显示器 |
| US20180275402A1 (en) | 2015-01-12 | 2018-09-27 | Digilens, Inc. | Holographic waveguide light field displays |
| US10330777B2 (en) | 2015-01-20 | 2019-06-25 | Digilens Inc. | Holographic waveguide lidar |
| US9632226B2 (en) | 2015-02-12 | 2017-04-25 | Digilens Inc. | Waveguide grating device |
| US10459145B2 (en) | 2015-03-16 | 2019-10-29 | Digilens Inc. | Waveguide device incorporating a light pipe |
| WO2016156776A1 (en) | 2015-03-31 | 2016-10-06 | Milan Momcilo Popovich | Method and apparatus for contact image sensing |
| CN108474945B (zh) | 2015-10-05 | 2021-10-01 | 迪吉伦斯公司 | 波导显示器 |
| TWI700517B (zh) * | 2015-10-22 | 2020-08-01 | 新加坡商海特根微光學公司 | 無熱光學組件 |
| CN109073889B (zh) | 2016-02-04 | 2021-04-27 | 迪吉伦斯公司 | 全息波导光学跟踪器 |
| WO2017162999A1 (en) | 2016-03-24 | 2017-09-28 | Popovich Milan Momcilo | Method and apparatus for providing a polarization selective holographic waveguide device |
| US10890707B2 (en) | 2016-04-11 | 2021-01-12 | Digilens Inc. | Holographic waveguide apparatus for structured light projection |
| US11513350B2 (en) | 2016-12-02 | 2022-11-29 | Digilens Inc. | Waveguide device with uniform output illumination |
| WO2018129398A1 (en) | 2017-01-05 | 2018-07-12 | Digilens, Inc. | Wearable heads up displays |
| CN107357027B (zh) * | 2017-07-17 | 2019-09-24 | 北京交通大学 | 一种耦合成像光学系统 |
| JP7399084B2 (ja) | 2017-10-16 | 2023-12-15 | ディジレンズ インコーポレイテッド | ピクセル化されたディスプレイの画像分解能を倍増させるためのシステムおよび方法 |
| JP7135298B2 (ja) * | 2017-10-27 | 2022-09-13 | 株式会社リコー | 投射光学系、画像投射装置 |
| KR20250089565A (ko) | 2018-01-08 | 2025-06-18 | 디지렌즈 인코포레이티드. | 도파관 셀을 제조하기 위한 시스템 및 방법 |
| KR20250027583A (ko) | 2018-01-08 | 2025-02-26 | 디지렌즈 인코포레이티드. | 도파관 셀 내의 홀로그래픽 격자의 높은 처리능력의 레코딩을 위한 시스템 및 방법 |
| JP7250799B2 (ja) | 2018-01-08 | 2023-04-03 | ディジレンズ インコーポレイテッド | 光学導波管を加工するための方法 |
| WO2019136476A1 (en) | 2018-01-08 | 2019-07-11 | Digilens, Inc. | Waveguide architectures and related methods of manufacturing |
| EP4372451A3 (en) | 2018-03-16 | 2024-08-14 | Digilens Inc. | Holographic waveguides incorporating birefringence control and methods for their fabrication |
| US11402801B2 (en) | 2018-07-25 | 2022-08-02 | Digilens Inc. | Systems and methods for fabricating a multilayer optical structure |
| US10782509B2 (en) | 2018-09-14 | 2020-09-22 | Bae Systems Information And Electronic Systems Integration Inc. | Orthoscopic projection lens |
| US20200225471A1 (en) | 2019-01-14 | 2020-07-16 | Digilens Inc. | Holographic Waveguide Display with Light Control Layer |
| US20200247017A1 (en) | 2019-02-05 | 2020-08-06 | Digilens Inc. | Methods for Compensating for Optical Surface Nonuniformity |
| US20200264378A1 (en) | 2019-02-15 | 2020-08-20 | Digilens Inc. | Methods and Apparatuses for Providing a Holographic Waveguide Display Using Integrated Gratings |
| US20220283377A1 (en) | 2019-02-15 | 2022-09-08 | Digilens Inc. | Wide Angle Waveguide Display |
| CN113728258A (zh) | 2019-03-12 | 2021-11-30 | 迪吉伦斯公司 | 全息波导背光及相关制造方法 |
| WO2020247930A1 (en) | 2019-06-07 | 2020-12-10 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
| CN114341729A (zh) | 2019-07-29 | 2022-04-12 | 迪吉伦斯公司 | 用于使像素化显示器的图像分辨率和视场倍增的方法和设备 |
| JP2022546413A (ja) | 2019-08-29 | 2022-11-04 | ディジレンズ インコーポレイテッド | 真空回折格子および製造方法 |
| CN111427139B (zh) * | 2020-05-08 | 2024-12-17 | 深圳市雷影光电科技有限公司 | 内合焦式成像镜头 |
| WO2021230218A1 (ja) * | 2020-05-12 | 2021-11-18 | 株式会社nittoh | レンズシステムおよびプロジェクタ |
| US12222499B2 (en) | 2020-12-21 | 2025-02-11 | Digilens Inc. | Eye glow suppression in waveguide based displays |
| US12399326B2 (en) | 2021-01-07 | 2025-08-26 | Digilens Inc. | Grating structures for color waveguides |
| EP4288831A4 (en) | 2021-03-05 | 2025-01-15 | Digilens Inc. | Evacuated periodic structures and methods of manufacturing |
| CN114578515B (zh) * | 2022-03-10 | 2023-08-08 | 江西晶超光学有限公司 | 光学镜头、摄像模组及电子设备 |
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| JPS58125007A (ja) * | 1982-01-20 | 1983-07-25 | Matsushita Electric Ind Co Ltd | 投影レンズ |
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| US5200861A (en) * | 1991-09-27 | 1993-04-06 | U.S. Precision Lens Incorporated | Lens systems |
| US5218480A (en) * | 1991-12-03 | 1993-06-08 | U.S. Precision Lens Incorporated | Retrofocus wide angle lens |
| US5442484A (en) * | 1992-01-06 | 1995-08-15 | Mitsubishi Denki Kabushiki Kaisha | Retro-focus type lens and projection-type display apparatus |
| JPH05273464A (ja) * | 1992-03-27 | 1993-10-22 | Fuji Photo Optical Co Ltd | 可変焦点距離レンズ |
| US5313330A (en) * | 1992-08-31 | 1994-05-17 | U.S. Precision Lens Incorporated | Zoom projection lens systems |
| US5309283A (en) * | 1993-03-30 | 1994-05-03 | U.S. Precision Lens Incorporated | Hybrid, color-corrected, projection TV lens system |
| US5659424A (en) * | 1993-05-25 | 1997-08-19 | Hitachi, Ltd. | Projecting lens and image display device |
| JPH06347695A (ja) * | 1993-06-14 | 1994-12-22 | Nikon Corp | 投影レンズ |
| US5329363A (en) * | 1993-06-15 | 1994-07-12 | U. S. Precision Lens Incorporated | Projection lens systems having reduced spherochromatism |
| US5455713A (en) * | 1993-06-23 | 1995-10-03 | Kreitzer; Melvyn H. | High performance, thermally-stabilized projection television lens systems |
| US5625495A (en) * | 1994-12-07 | 1997-04-29 | U.S. Precision Lens Inc. | Telecentric lens systems for forming an image of an object composed of pixels |
| JP3394107B2 (ja) * | 1995-01-19 | 2003-04-07 | 三菱電機株式会社 | ズームレンズ及び投写型表示装置 |
| ES2199266T3 (es) * | 1995-09-21 | 2004-02-16 | 3M Innovative Properties Company | Sistema de lentes de proyeccion para television. |
| JPH09304694A (ja) * | 1995-11-07 | 1997-11-28 | Nikon Corp | 投射レンズ系及びそれを備えた投射装置 |
| CN1110716C (zh) * | 1996-04-29 | 2003-06-04 | 美国精密镜片股份有限公司 | 液晶显示投影透镜 |
-
1997
- 1997-08-08 EP EP97113714A patent/EP0825474B1/en not_active Expired - Lifetime
- 1997-08-08 DE DE69726352T patent/DE69726352T2/de not_active Expired - Fee Related
- 1997-08-11 US US08/908,115 patent/US6023375A/en not_active Expired - Lifetime
- 1997-08-11 US US08/908,118 patent/US5900989A/en not_active Expired - Lifetime
- 1997-08-15 CN CNB97117606XA patent/CN1147753C/zh not_active Expired - Fee Related
- 1997-08-15 CN CNB971176094A patent/CN1153995C/zh not_active Expired - Fee Related
- 1997-08-16 KR KR1019970039083A patent/KR100465100B1/ko not_active Expired - Fee Related
- 1997-08-18 JP JP9221636A patent/JPH10186232A/ja active Pending
- 1997-08-18 JP JP9221637A patent/JPH10186233A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0825474A2 (en) | 1998-02-25 |
| US5900989A (en) | 1999-05-04 |
| EP0825474B1 (en) | 2003-11-26 |
| CN1177115A (zh) | 1998-03-25 |
| CN1147753C (zh) | 2004-04-28 |
| DE69726352T2 (de) | 2004-09-09 |
| JPH10186233A (ja) | 1998-07-14 |
| KR100465100B1 (ko) | 2005-06-13 |
| EP0825474A3 (en) | 1998-10-28 |
| CN1153995C (zh) | 2004-06-16 |
| CN1186254A (zh) | 1998-07-01 |
| KR19980018720A (ko) | 1998-06-05 |
| DE69726352D1 (de) | 2004-01-08 |
| US6023375A (en) | 2000-02-08 |
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