FR2780519B1 - COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT - Google Patents

COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT

Info

Publication number: FR2780519B1
Authority: FR; France
Prior art keywords: transmission coefficient; improved transmission; collimation device; collimation; improved
Prior art date: 1998-06-26
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

FR9808157A

Other languages

French (fr)

Other versions

FR2780519A1 (en

Inventor

Michel Lacroix

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.)

Thales SA

Original Assignee

Thomson CSF SA

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.)

1998-06-26

Filing date

1998-06-26

Publication date

2001-11-30

1998-06-26 Application filed by Thomson CSF SA filed Critical Thomson CSF SA

1998-06-26 Priority to FR9808157A priority Critical patent/FR2780519B1/en

1999-12-31 Publication of FR2780519A1 publication Critical patent/FR2780519A1/en

2001-11-30 Application granted granted Critical

2001-11-30 Publication of FR2780519B1 publication Critical patent/FR2780519B1/en

2018-06-26 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

Classifications

- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- 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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
- 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
- G02B27/30—Collimators
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Liquid Crystal (AREA)
Polarising Elements (AREA)

FR9808157A 1998-06-26 1998-06-26 COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT Expired - Fee Related FR2780519B1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
FR9808157A FR2780519B1 (en)	1998-06-26	1998-06-26	COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR9808157A FR2780519B1 (en)	1998-06-26	1998-06-26	COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT

Publications (2)

Publication Number	Publication Date
FR2780519A1 FR2780519A1 (en)	1999-12-31
FR2780519B1 true FR2780519B1 (en)	2001-11-30

Family

ID=9527927

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR9808157A Expired - Fee Related FR2780519B1 (en)	1998-06-26	1998-06-26	COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT

Country Status (1)

Country	Link
FR (1)	FR2780519B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB8916206D0 (en) *	1989-07-14	1989-11-08	Marconi Gec Ltd	Helmet systems
US5383053A (en) *	1992-04-07	1995-01-17	Hughes Aircraft Company	Virtual image display having a high efficiency grid beamsplitter
FR2690534A1 (en) *	1992-04-24	1993-10-29	Thomson Csf	Optical collimator, especially for helmet with visor - incorporates circular polarisation selector followed by semi-reflective spherical mirror and linear reflective polariser
EP0746782A1 (en) *	1994-02-07	1996-12-11	Virtual I/O, Inc.	Intensified visual display
US6181386B1 (en) *	1995-12-29	2001-01-30	Duke University	Projecting images

1998
- 1998-06-26 FR FR9808157A patent/FR2780519B1/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
FR2780519A1 (en)	1999-12-31

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Legal Events

Date	Code	Title	Description
2002-09-27	CD	Change of name or company name
2006-03-31	ST	Notification of lapse	Effective date: 20060228