FR2402219A1 - Appareil de formation d'image optique - Google Patents

Appareil de formation d'image optique

Info

Publication number
FR2402219A1
FR2402219A1 FR7824675A FR7824675A FR2402219A1 FR 2402219 A1 FR2402219 A1 FR 2402219A1 FR 7824675 A FR7824675 A FR 7824675A FR 7824675 A FR7824675 A FR 7824675A FR 2402219 A1 FR2402219 A1 FR 2402219A1
Authority
FR
France
Prior art keywords
images
optical image
training device
image training
reflections
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.)
Granted
Application number
FR7824675A
Other languages
English (en)
Other versions
FR2402219B1 (fr
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.)
Farrand Optical Co Inc
Original Assignee
Farrand Optical Co Inc
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
Priority claimed from US05/828,783 external-priority patent/US4163542A/en
Application filed by Farrand Optical Co Inc filed Critical Farrand Optical Co Inc
Publication of FR2402219A1 publication Critical patent/FR2402219A1/fr
Application granted granted Critical
Publication of FR2402219B1 publication Critical patent/FR2402219B1/fr
Granted 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
    • 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
    • G02B27/0101—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
    • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects
    • 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
    • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects
    • G02B2027/0121—Parasitic image effect attenuation by suitable positioning of the parasitic images
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Abstract

L'invention concerne la visualisation d'images. Images indésirables et réflexions sont éliminées dans un système d'affichage à l'infini, dans l'axe, par inclinaison de l'ensemble biréfringent 230 du système, sur un certain angle par rapport à un plan perpendiculaire à l'axe optique du miroir courbe 200 de ce système, de sorte que ces images et réflexions sont formées à l'extérieur du champ de vision de l'observateur. L'écran d'affichage 220 est courbe et un polariseur 235 est interposé entre lui et le miroir courbe 200.
FR7824675A 1977-08-29 1978-08-25 Appareil de formation d'image optique Granted FR2402219A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/828,783 US4163542A (en) 1976-05-10 1977-08-29 Optical image-forming apparatus with tilted bi-refringent elements

Publications (2)

Publication Number Publication Date
FR2402219A1 true FR2402219A1 (fr) 1979-03-30
FR2402219B1 FR2402219B1 (fr) 1984-01-20

Family

ID=25252736

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824675A Granted FR2402219A1 (fr) 1977-08-29 1978-08-25 Appareil de formation d'image optique

Country Status (4)

Country Link
CA (1) CA1102600A (fr)
DE (1) DE2836184A1 (fr)
FR (1) FR2402219A1 (fr)
GB (1) GB2004383B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178554A (en) * 1985-07-27 1987-02-11 Stc Plc Optical expanded beam termination
SE455662B (sv) * 1986-11-28 1988-07-25 Hasselblad Ab Victor Anordning vid bildsendare
US5625372A (en) * 1994-12-21 1997-04-29 Siliscape, Inc. Compact compound magnified virtual image electronic display
US5644323A (en) * 1994-12-21 1997-07-01 Siliscape, Inc. Miniature synthesized virtual image electronic display
US5684497A (en) * 1994-12-21 1997-11-04 Siliscape, Inc. Twice folded compound magnified virtual image electronic display
US6433935B2 (en) 1996-07-02 2002-08-13 Three-Five Systems, Inc. Display illumination system
US5771124A (en) * 1996-07-02 1998-06-23 Siliscape Compact display system with two stage magnification and immersed beam splitter
US6340230B1 (en) * 2000-03-10 2002-01-22 Optical Coating Laboratory, Inc. Method of using a retarder plate to improve contrast in a reflective imaging system
DE102009057033A1 (de) * 2009-12-04 2011-06-09 Bayerische Motoren Werke Aktiengesellschaft Projektionseinheit für ein Head-Up-Display und Verfahren zum Betreiben einer Projektionseinheit für ein Head-Up-Display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1321303A (en) * 1970-03-31 1973-06-27 Pilkington Perkin Elmer Ltd Optical systems
US3940203A (en) * 1975-04-01 1976-02-24 Farrand Optical Co., Inc. Image-forming apparatus
US4093347A (en) * 1976-05-10 1978-06-06 Farrand Optical Co., Inc. Optical simulation apparatus using controllable real-life element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340687A1 (de) * 1973-08-10 1975-02-20 Sick Optik Elektronik Erwin Optische anordnung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1321303A (en) * 1970-03-31 1973-06-27 Pilkington Perkin Elmer Ltd Optical systems
US3940203A (en) * 1975-04-01 1976-02-24 Farrand Optical Co., Inc. Image-forming apparatus
US4093347A (en) * 1976-05-10 1978-06-06 Farrand Optical Co., Inc. Optical simulation apparatus using controllable real-life element

Also Published As

Publication number Publication date
DE2836184C2 (fr) 1987-12-10
GB2004383A (en) 1979-03-28
FR2402219B1 (fr) 1984-01-20
CA1102600A (fr) 1981-06-09
GB2004383B (en) 1982-07-28
DE2836184A1 (de) 1979-03-08

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Legal Events

Date Code Title Description
ST Notification of lapse