CA2460450C - Appareil et technique de projection optique - Google Patents

Appareil et technique de projection optique Download PDF

Info

Publication number: CA2460450C
Authority: CA; Canada
Prior art keywords: image; display device; output surface; optical component; light
Prior art date: 1996-10-08
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

CA002460450A

Other languages

English (en)

Other versions

CA2460450A1 (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.)

1996-10-08

Filing date

1996-10-08

Publication date

2005-12-27

1996-10-08 Application filed by Individual filed Critical Individual

1996-10-08 Priority claimed from CA002305268A external-priority patent/CA2305268C/fr

1998-04-16 Publication of CA2460450A1 publication Critical patent/CA2460450A1/fr

2005-12-27 Application granted granted Critical

2005-12-27 Publication of CA2460450C publication Critical patent/CA2460450C/fr

2016-10-08 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

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238000005286 illumination Methods 0.000 claims description 4
230000000295 complement effect Effects 0.000 claims description 2
238000012937 correction Methods 0.000 abstract description 4
238000012634 optical imaging Methods 0.000 abstract 1
238000003384 imaging method Methods 0.000 description 6
239000000463 material Substances 0.000 description 4
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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)
Devices For Indicating Variable Information By Combining Individual Elements (AREA)

CA002460450A 1996-10-08 1996-10-08 Appareil et technique de projection optique Expired - Fee Related CA2460450C (fr)

Applications Claiming Priority (1)

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

Related Parent Applications (1)

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

Publications (2)

Publication Number	Publication Date
CA2460450A1 CA2460450A1 (fr)	1998-04-16
CA2460450C true CA2460450C (fr)	2005-12-27

Family

ID=32399667

Family Applications (1)

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

Country Status (1)

Country	Link
CA (1)	CA2460450C (fr)

1996
- 1996-10-08 CA CA002460450A patent/CA2460450C/fr not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA2460450A1 (fr)	1998-04-16

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Legal Events

Date	Code	Title	Description
2004-03-29	EEER	Examination request
2007-10-09	MKLA	Lapsed