DE2836184C2 - - Google Patents

Info

Publication number
DE2836184C2
DE2836184C2 DE2836184A DE2836184A DE2836184C2 DE 2836184 C2 DE2836184 C2 DE 2836184C2 DE 2836184 A DE2836184 A DE 2836184A DE 2836184 A DE2836184 A DE 2836184A DE 2836184 C2 DE2836184 C2 DE 2836184C2
Authority
DE
Germany
Prior art keywords
mirror
spherical
image
axis
polarizer
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
Application number
DE2836184A
Other languages
German (de)
English (en)
Other versions
DE2836184A1 (de
Inventor
Joseph A. Yorktown Heights N.Y. Us Larussa
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 Valhalla Ny Us
Original Assignee
Farrand Optical Co Inc Valhalla Ny Us
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 Valhalla Ny Us filed Critical Farrand Optical Co Inc Valhalla Ny Us
Publication of DE2836184A1 publication Critical patent/DE2836184A1/de
Application granted granted Critical
Publication of DE2836184C2 publication Critical patent/DE2836184C2/de
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Eye Examination Apparatus (AREA)
DE19782836184 1977-08-29 1978-08-18 Optisches geraet zur wiedergabe eines abgebildeten bildes im unendlichen Granted DE2836184A1 (de)

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
DE2836184A1 DE2836184A1 (de) 1979-03-08
DE2836184C2 true DE2836184C2 (fr) 1987-12-10

Family

ID=25252736

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782836184 Granted DE2836184A1 (de) 1977-08-29 1978-08-18 Optisches geraet zur wiedergabe eines abgebildeten bildes im unendlichen

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (8)

* 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
US5771124A (en) * 1996-07-02 1998-06-23 Siliscape Compact display system with two stage magnification and immersed beam splitter
US6433935B2 (en) 1996-07-02 2002-08-13 Three-Five Systems, Inc. Display illumination system
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

Family Cites Families (4)

* 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
DE2340687A1 (de) * 1973-08-10 1975-02-20 Sick Optik Elektronik Erwin Optische anordnung
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
FR2402219B1 (fr) 1984-01-20
GB2004383B (en) 1982-07-28
CA1102600A (fr) 1981-06-09
FR2402219A1 (fr) 1979-03-30
DE2836184A1 (de) 1979-03-08
GB2004383A (en) 1979-03-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee