GB1403575A - Optical viewing system - Google Patents

Optical viewing system

Info

Publication number
GB1403575A
GB1403575A GB3707372A GB3707372A GB1403575A GB 1403575 A GB1403575 A GB 1403575A GB 3707372 A GB3707372 A GB 3707372A GB 3707372 A GB3707372 A GB 3707372A GB 1403575 A GB1403575 A GB 1403575A
Authority
GB
United Kingdom
Prior art keywords
cell
viewing path
light
eye
viewing
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
GB3707372A
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB3707372A priority Critical patent/GB1403575A/en
Publication of GB1403575A publication Critical patent/GB1403575A/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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application

Abstract

1403575 Optical systems RANK ORGANISATION Ltd 12 July 1973 [9 Aug 1972] 37073/72 Heading G2J A viewing system e.g. in a microscope or theodolite, having optical components defining a viewing path 3 along which light passes to an eye-piece 2, includes a liquid crystal cell 4, means 9, 10 additional to the components for directing light through the cell 4 means 8 for applying an activating field to the cell, or to selected parts of the cell, and means 11, 12 for forming an image of the cell 4 in the viewing path 3, e.g. in the image plane 14 of the eye-piece 2, whereby a predetermined display is superimposed on the viewing path on activating the cell. The display may be a digital presentation, a graticule, a scale or cross-wires, and the cell may be of the dynamic scatter type or the high contrast type. If the latter, the cell may have linear surface textures or features on the cell walls arranged at right angles to each other, the cell being located between two polarizing filters (15), Fig. 2 (not shown), the polarizing directions of which are parallel to the linear textures &c. in adjacent walls. Activation of the cell, or selected parts therof, destroys the optical activity of those parts of the cell, which therefore passes no light through those parts.
GB3707372A 1972-08-09 1972-08-09 Optical viewing system Expired GB1403575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3707372A GB1403575A (en) 1972-08-09 1972-08-09 Optical viewing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3707372A GB1403575A (en) 1972-08-09 1972-08-09 Optical viewing system

Publications (1)

Publication Number Publication Date
GB1403575A true GB1403575A (en) 1975-08-28

Family

ID=10393508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3707372A Expired GB1403575A (en) 1972-08-09 1972-08-09 Optical viewing system

Country Status (1)

Country Link
GB (1) GB1403575A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005245A1 (en) * 1978-05-05 1979-11-14 Hughes Aircraft Company Liquid crystal image projector system
DE3622147A1 (en) * 1986-07-02 1988-01-21 Draegerwerk Ag RESPIRATORY DEVICE WITH SIGNAL PROCESSING UNIT
DE9001937U1 (en) * 1990-02-19 1990-04-26 Zapp, Walter, Oberegg, Ch
EP0540393A1 (en) * 1991-10-31 1993-05-05 Thomson-Csf Binoculars with computer system
EP0540394B1 (en) * 1991-10-31 1997-09-17 Thomson-Csf Dual image binoculars

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005245A1 (en) * 1978-05-05 1979-11-14 Hughes Aircraft Company Liquid crystal image projector system
DE3622147A1 (en) * 1986-07-02 1988-01-21 Draegerwerk Ag RESPIRATORY DEVICE WITH SIGNAL PROCESSING UNIT
DE9001937U1 (en) * 1990-02-19 1990-04-26 Zapp, Walter, Oberegg, Ch
EP0540393A1 (en) * 1991-10-31 1993-05-05 Thomson-Csf Binoculars with computer system
FR2683330A1 (en) * 1991-10-31 1993-05-07 Thomson Csf COMPUTER BINOCULARS.
US5579165A (en) * 1991-10-31 1996-11-26 Thomson-Csf Computerized binoculars
EP0540394B1 (en) * 1991-10-31 1997-09-17 Thomson-Csf Dual image binoculars

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee