GB1223173A - Improvements in or relating to head-up displays - Google Patents

Improvements in or relating to head-up displays

Info

Publication number
GB1223173A
GB1223173A GB3122668A GB3122668A GB1223173A GB 1223173 A GB1223173 A GB 1223173A GB 3122668 A GB3122668 A GB 3122668A GB 3122668 A GB3122668 A GB 3122668A GB 1223173 A GB1223173 A GB 1223173A
Authority
GB
United Kingdom
Prior art keywords
light
observer
head
retro
reflectors
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
GB3122668A
Inventor
Michael Harold Freeman
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.)
Qioptiq Ltd
Original Assignee
Pilkington PE Ltd
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 Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to GB3122668A priority Critical patent/GB1223173A/en
Priority to DE19691932326 priority patent/DE1932326C3/en
Priority to FR6921824A priority patent/FR2014456A1/fr
Publication of GB1223173A publication Critical patent/GB1223173A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

1,223,173. Head-up display apparatus. PILKINGTON PERKIN-ELMER Ltd. June 20, 1969 [June 29, 1968], No.31226/68. Heading G2J. A head-up display apparatus comprises a source 5 of light information signals, means 7 to collimate light therefrom to travel in the opposite direction to light 1 from a distant scene, and at least one retroreflector 10 adapted to reflect light from the collimated beam to travel along a path parallel to its original path but in the opposite direction so as to superimpose an image of the light information signals on the field of view of an observer 4. As shown, signals displayed on a C.R.T. 5 are collimated by means 7 which comprises an apertured concave spherical mirror 8 and a convex spherical mirror 9 such that collimated light may pass either side of the observer's head to be reflected by a pair of retro-reflectors 10 into the observer's eyes. The retro-reflectors 10 which may be mounted on a spectacle frame have two of the three mutually perpendicular faces fully reflecting and the third face partially reflecting and are so positioned that the light 1 entering through an aircraft windscreen 2 may pass through the partially reflecting face into the observer's eyes. In a second embodiment two C.R.T. 11, 12 having appropriate collimating means are provided. Lens systems may replace mirrors 8, 9 and the reflecting surfaces of the retro-reflectors 10 may be provided with filters such as di or tri-chroic coatings.
GB3122668A 1968-06-29 1968-06-29 Improvements in or relating to head-up displays Expired GB1223173A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3122668A GB1223173A (en) 1968-06-29 1968-06-29 Improvements in or relating to head-up displays
DE19691932326 DE1932326C3 (en) 1968-06-29 1969-06-26 Device for superimposing optical information and the image of the outside space seen by an observer in a vehicle
FR6921824A FR2014456A1 (en) 1968-06-29 1969-06-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3122668A GB1223173A (en) 1968-06-29 1968-06-29 Improvements in or relating to head-up displays

Publications (1)

Publication Number Publication Date
GB1223173A true GB1223173A (en) 1971-02-24

Family

ID=10319931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3122668A Expired GB1223173A (en) 1968-06-29 1968-06-29 Improvements in or relating to head-up displays

Country Status (3)

Country Link
DE (1) DE1932326C3 (en)
FR (1) FR2014456A1 (en)
GB (1) GB1223173A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753321A1 (en) * 1976-12-03 1978-06-08 Smiths Industries Ltd IMAGING DEVICE
WO2010105338A1 (en) * 2009-03-16 2010-09-23 Brent Sheldon Eyewear with reflective frame
US7828427B2 (en) 2009-03-16 2010-11-09 Brent Sheldon Glasses with reflective frame
US7942521B2 (en) 2009-03-16 2011-05-17 Brent Sheldon Glasses with reflective frames
US8246166B2 (en) 2009-03-16 2012-08-21 Brent Sheldon Eyewear with reflective head strap

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753321A1 (en) * 1976-12-03 1978-06-08 Smiths Industries Ltd IMAGING DEVICE
WO2010105338A1 (en) * 2009-03-16 2010-09-23 Brent Sheldon Eyewear with reflective frame
US7828427B2 (en) 2009-03-16 2010-11-09 Brent Sheldon Glasses with reflective frame
US7942520B2 (en) 2009-03-16 2011-05-17 Brent Sheldon Eyewear with reflective frame
US7942521B2 (en) 2009-03-16 2011-05-17 Brent Sheldon Glasses with reflective frames
US8246166B2 (en) 2009-03-16 2012-08-21 Brent Sheldon Eyewear with reflective head strap

Also Published As

Publication number Publication date
DE1932326B2 (en) 1973-10-11
DE1932326A1 (en) 1970-01-02
FR2014456A1 (en) 1970-04-17
DE1932326C3 (en) 1974-05-16

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