CA2305268C - Appareil et technique de projection optique - Google Patents

Appareil et technique de projection optique Download PDF

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Publication number
CA2305268C
CA2305268C CA002305268A CA2305268A CA2305268C CA 2305268 C CA2305268 C CA 2305268C CA 002305268 A CA002305268 A CA 002305268A CA 2305268 A CA2305268 A CA 2305268A CA 2305268 C CA2305268 C CA 2305268C
Authority
CA
Canada
Prior art keywords
image
optical
optical system
horizontal
vertical
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.)
Expired - Fee Related
Application number
CA002305268A
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English (en)
Other versions
CA2305268A1 (fr
Inventor
Leo Beiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002460450A priority Critical patent/CA2460450C/fr
Publication of CA2305268A1 publication Critical patent/CA2305268A1/fr
Application granted granted Critical
Publication of CA2305268C publication Critical patent/CA2305268C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • G03B21/147—Optical correction of image distortions, e.g. keystone
    • 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
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
    • G03B37/06—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe involving anamorphosis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)

Abstract

Certains systèmes optiques d'imagerie présentent des surfaces focales de l'image verticale et de l'image horizontale disparates, dont l'une d'entre elles au moins est inclinée par rapport à l'axe optique. L'optique de projection qui éclaire lesdits systèmes doit faire en sorte que les composants verticaux de l'image convergent sur la surface de l'image verticale nominale et que les composants horizontaux de l'image convergent sur la surface de l'image horizontale disparate. Comme au moins une de ces surfaces d'image peut être inclinée par rapport à l'axe de projection, une correction est nécessaire pour maintenir la convergence sur la totalité des surfaces et éviter la déformation trapézoïdale de l'image. Le système peut également nécessiter des agrandissements verticaux et horizontaux différents des images lorsque celles-ci sont projetées sur lesdites surfaces focales disparates. L'invention décrit, entre autres, les techniques permettant de satisfaire à ces diverses exigences: projeter un champ objet rectiligne dans un système dont les plans d'image sont inclinés et disparates.
CA002305268A 1996-10-08 1996-10-08 Appareil et technique de projection optique Expired - Fee Related CA2305268C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002460450A CA2460450C (fr) 1996-10-08 1996-10-08 Appareil et technique de projection optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB1996/001129 WO1998015164A2 (fr) 1996-10-08 1996-10-08 Appareil et technique de projection optique

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002460450A Division CA2460450C (fr) 1996-10-08 1996-10-08 Appareil et technique de projection optique

Publications (2)

Publication Number Publication Date
CA2305268A1 CA2305268A1 (fr) 1998-04-16
CA2305268C true CA2305268C (fr) 2005-12-27

Family

ID=11004485

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002305268A Expired - Fee Related CA2305268C (fr) 1996-10-08 1996-10-08 Appareil et technique de projection optique

Country Status (3)

Country Link
EP (1) EP0931275A4 (fr)
CA (1) CA2305268C (fr)
WO (1) WO1998015164A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6485145B1 (en) * 1999-12-21 2002-11-26 Scram Technologies, Inc. Optical system for display panel
US6457834B1 (en) * 2001-01-24 2002-10-01 Scram Technologies, Inc. Optical system for display panel
CA2525254A1 (fr) * 2003-05-13 2004-12-25 Scram Technologies, Inc Systeme optique de precision pour panneau d'affichage
WO2009064467A1 (fr) * 2007-11-15 2009-05-22 Tharpe Christopher S Afficheur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212397A (en) * 1962-06-25 1965-10-19 Wendell S Miller Keystone-distortion controlling system
US5220363A (en) * 1988-09-14 1993-06-15 Casio Computer Co., Ltd. Projector
US5016964A (en) * 1989-10-04 1991-05-21 Spectranetics Corporation Optical fiber coupler with linear input
US5422691A (en) * 1991-03-15 1995-06-06 Seiko Epson Corporation Projection type displaying apparatus and illumination system
US5381502A (en) * 1993-09-29 1995-01-10 Associated Universities, Inc. Flat or curved thin optical display panel
US5455882A (en) * 1993-09-29 1995-10-03 Associated Universities, Inc. Interactive optical panel
JPH07159721A (ja) * 1993-12-08 1995-06-23 Sony Corp プロジェクター

Also Published As

Publication number Publication date
EP0931275A4 (fr) 2000-03-01
WO1998015164A2 (fr) 1998-04-16
EP0931275A1 (fr) 1999-07-28
WO1998015164A3 (fr) 1998-08-27
CA2305268A1 (fr) 1998-04-16

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