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FR2279122A1 - Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles - Google Patents

Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles

Info

Publication number
FR2279122A1
FR2279122A1 FR7415377A FR7415377A FR2279122A1 FR 2279122 A1 FR2279122 A1 FR 2279122A1 FR 7415377 A FR7415377 A FR 7415377A FR 7415377 A FR7415377 A FR 7415377A FR 2279122 A1 FR2279122 A1 FR 2279122A1
Authority
FR
France
Prior art keywords
transparent
shades
parallel
opaque
semi
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
FR7415377A
Other languages
French (fr)
Other versions
FR2279122B1 (en
Inventor
Pierre Leclerc
Roger Parus
Jean-Claude Reymond
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.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7415377A priority Critical patent/FR2279122A1/en
Priority to DE19752519308 priority patent/DE2519308A1/en
Publication of FR2279122A1 publication Critical patent/FR2279122A1/en
Application granted granted Critical
Publication of FR2279122B1 publication Critical patent/FR2279122B1/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
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Blinds (AREA)

Abstract

The window has a special Venetian blind effect in that it permits light beams lying parallel to a certain plane to pass through while having a semi-transparent to opaque quality for other beams depending upon their angle of incidence. It is created from a main transparent pane in which parallel rows of shades are spaced at equal distances from each other. The shades are very thin with respect to their spaced distances from each other. The planes of the shades lie in parallel to the permitted light plane. A preferred method of production utilizes two transparent half-panes which interdigitate by means of saw-tooth end sections, each second flank having a layer of opaque material to form the parallel row of shades.
FR7415377A 1974-05-03 1974-05-03 Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles Granted FR2279122A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7415377A FR2279122A1 (en) 1974-05-03 1974-05-03 Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles
DE19752519308 DE2519308A1 (en) 1974-05-03 1975-04-30 BLINDERING WINDOW AND METHOD OF ITS MANUFACTURING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7415377A FR2279122A1 (en) 1974-05-03 1974-05-03 Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles

Publications (2)

Publication Number Publication Date
FR2279122A1 true FR2279122A1 (en) 1976-02-13
FR2279122B1 FR2279122B1 (en) 1976-12-17

Family

ID=9138434

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7415377A Granted FR2279122A1 (en) 1974-05-03 1974-05-03 Window with shutter effect - is transparent for parallel lying beams and semi-transparent or opaque for other angles

Country Status (2)

Country Link
DE (1) DE2519308A1 (en)
FR (1) FR2279122A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506466A1 (en) * 1981-05-22 1982-11-26 Thomson Csf MICRO-FLAP OPTICAL FILTER, PROCESS FOR OBTAINING THE SAME, AND USE FOR AN AIRPORT CATHODE INDICATOR
FR2507563A1 (en) * 1981-06-12 1982-12-17 Deutsche Forsch Luft Raumfahrt SCREEN APPARATUS FOR CONDUCTING A TURRET HELICOPTER AT NIGHT

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399048A (en) * 1977-10-06 1983-08-16 Colgate-Palmolive Company High bulk density particulate heavy duty laundry detergent
US4287235A (en) * 1979-05-29 1981-09-01 Massachusetts Institute Of Technology X-ray lithography at ˜100 A linewidths using X-ray masks fabricated by shadowing techniques
DE3822222A1 (en) * 1988-07-01 1990-01-04 Bosch Gmbh Robert DEVICE FOR HEAD-UP DISPLAYS ON MOTOR VEHICLES
CA2023264C (en) * 1989-08-31 1995-03-21 John J. Ferrer Louvered reflective head-up display for automobiles
ES2060911T3 (en) * 1990-12-12 1994-12-01 Vdo Schindling PRESENTATION UNIT.
IT1246064B (en) * 1991-04-24 1994-11-07 Veglia Borletti Srl APPARATUS FOR DISPLAYING DATA IN A VEHICLE
DE19961572C2 (en) 1999-12-21 2003-10-09 Bosch Gmbh Robert display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506466A1 (en) * 1981-05-22 1982-11-26 Thomson Csf MICRO-FLAP OPTICAL FILTER, PROCESS FOR OBTAINING THE SAME, AND USE FOR AN AIRPORT CATHODE INDICATOR
EP0066496A1 (en) * 1981-05-22 1982-12-08 Thomson-Csf Method for the production of a microlamellar optical filter and utilization in an aircraft cathode ray tube indicator
FR2507563A1 (en) * 1981-06-12 1982-12-17 Deutsche Forsch Luft Raumfahrt SCREEN APPARATUS FOR CONDUCTING A TURRET HELICOPTER AT NIGHT

Also Published As

Publication number Publication date
FR2279122B1 (en) 1976-12-17
DE2519308A1 (en) 1975-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse