FR2690534B1 - - Google Patents

Info

Publication number
FR2690534B1
FR2690534B1 FR9205055A FR9205055A FR2690534B1 FR 2690534 B1 FR2690534 B1 FR 2690534B1 FR 9205055 A FR9205055 A FR 9205055A FR 9205055 A FR9205055 A FR 9205055A FR 2690534 B1 FR2690534 B1 FR 2690534B1
Authority
FR
France
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
FR9205055A
Other languages
French (fr)
Other versions
FR2690534A1 (en
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 filed Critical
Priority to FR9205055A priority Critical patent/FR2690534A1/en
Publication of FR2690534A1 publication Critical patent/FR2690534A1/en
Application granted granted Critical
Publication of FR2690534B1 publication Critical patent/FR2690534B1/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
    • G02B27/017—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
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • 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
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3016—Polarising elements involving passive liquid crystal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
FR9205055A 1992-04-24 1992-04-24 Optical collimator, especially for helmet with visor - incorporates circular polarisation selector followed by semi-reflective spherical mirror and linear reflective polariser Granted FR2690534A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9205055A FR2690534A1 (en) 1992-04-24 1992-04-24 Optical collimator, especially for helmet with visor - incorporates circular polarisation selector followed by semi-reflective spherical mirror and linear reflective polariser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9205055A FR2690534A1 (en) 1992-04-24 1992-04-24 Optical collimator, especially for helmet with visor - incorporates circular polarisation selector followed by semi-reflective spherical mirror and linear reflective polariser

Publications (2)

Publication Number Publication Date
FR2690534A1 FR2690534A1 (en) 1993-10-29
FR2690534B1 true FR2690534B1 (en) 1997-02-21

Family

ID=9429217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9205055A Granted FR2690534A1 (en) 1992-04-24 1992-04-24 Optical collimator, especially for helmet with visor - incorporates circular polarisation selector followed by semi-reflective spherical mirror and linear reflective polariser

Country Status (1)

Country Link
FR (1) FR2690534A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903396A (en) 1997-10-17 1999-05-11 I/O Display Systems, Llc Intensified visual display

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021391A1 (en) * 1994-02-07 1995-08-10 Virtual I/O, Inc. Intensified visual display
EP0710865A1 (en) * 1994-10-31 1996-05-08 Kaiser Electro-Optics, Inc. Optical collimating device
JP3295583B2 (en) * 1994-12-19 2002-06-24 シャープ株式会社 Optical device and head-mounted display using the optical device
WO1997034182A1 (en) * 1996-03-11 1997-09-18 Seiko Epson Corporation Head-mounted display
FR2776881B1 (en) * 1998-03-24 2001-11-16 Thomson Csf THREE-DIMENSIONAL VIEWING DEVICE
FR2776882B1 (en) * 1998-03-24 2001-11-16 Thomson Csf STEREOSCOPIC DISPLAY DEVICE
FR2780519B1 (en) * 1998-06-26 2001-11-30 Thomson Csf COLLIMATION DEVICE WITH IMPROVED TRANSMISSION COEFFICIENT
KR20010089170A (en) * 1999-06-22 2001-09-29 요트.게.아. 롤페즈 Head-mounted display
JP3918487B2 (en) * 2001-07-26 2007-05-23 セイコーエプソン株式会社 Stereoscopic display device and projection-type stereoscopic display device
US11586024B1 (en) 2019-08-05 2023-02-21 Meta Platforms Technologies, Llc Peripheral see-through pancake lens assembly and display device with same
US11579425B1 (en) 2019-08-05 2023-02-14 Meta Platforms Technologies, Llc Narrow-band peripheral see-through pancake lens assembly and display device with same
US11592608B2 (en) 2019-09-10 2023-02-28 Meta Platforms Technologies, Llc Switchable polarization retarder array for active zonal illumination of display
US11391948B2 (en) 2019-09-10 2022-07-19 Facebook Technologies, Llc Display illumination using a grating
US11726336B2 (en) 2019-09-10 2023-08-15 Meta Platforms Technologies, Llc Active zonal display illumination using a chopped lightguide
US11372247B2 (en) 2019-09-17 2022-06-28 Facebook Technologies, Llc Display device with diffusive display and see-through lens assembly
US11360308B2 (en) 2020-01-22 2022-06-14 Facebook Technologies, Llc Optical assembly with holographic optics for folded optical path

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443858A (en) * 1966-02-23 1969-05-13 Farrand Optical Co Inc Infinite optical image-forming apparatus
US4859031A (en) * 1987-08-03 1989-08-22 Kaiser Electronics Optical collimating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903396A (en) 1997-10-17 1999-05-11 I/O Display Systems, Llc Intensified visual display

Also Published As

Publication number Publication date
FR2690534A1 (en) 1993-10-29

Similar Documents

Publication Publication Date Title
DE9200027U1 (en)
FR2690534B1 (en)
DE9200110U1 (en)
FR2693004B1 (en)
DE9212168U1 (en)
DE9200178U1 (en)
DE9200663U1 (en)
DE9200185U1 (en)
DE9200225U1 (en)
DE9200266U1 (en)
DE9200215U1 (en)
DE9200300U1 (en)
DE9200280U1 (en)
DE9200083U1 (en)
DE9200022U1 (en)
BR9202713C1 (en)
DE9200246U1 (en)
DE9200181U1 (en)
DE9200158U1 (en)
DE9204002U1 (en)
DE9200340U1 (en)
DE9200130U1 (en)
DE9200228U1 (en)
DE9200129U1 (en)
DE9200151U1 (en)

Legal Events

Date Code Title Description
ST Notification of lapse