GB1432558A - Graticule - Google Patents
GraticuleInfo
- Publication number
- GB1432558A GB1432558A GB4389472A GB4389472A GB1432558A GB 1432558 A GB1432558 A GB 1432558A GB 4389472 A GB4389472 A GB 4389472A GB 4389472 A GB4389472 A GB 4389472A GB 1432558 A GB1432558 A GB 1432558A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- graticule
- array
- liquid crystal
- electrodes
- 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
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
- G02B27/32—Fiducial marks and measuring scales within the optical system
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
1432558 Controlling light DEFENCE SECRETARY OF STATE FOR 17 Oct 1973 [22 Sept 1972] 43894/72 Heading H4F A graticule in an optical system comprises a liquid crystal film between two parallel transparent plates each supporting an array of parallel electrodes, the arrays being inclined to each other. A cross is displayed when potential is applied to an electrode in each array. When the potential applied to both electrodes is of the same polarity the centre point remains clear. The graticule may be mounted in the image plane of the system or the cross is projected into this plane by a half silvered mirror. In the latter case the cross should be clear against a dark background, this is achieved using polarizing plates on either side of a liquid crystal which exhibits twisted nematic scattering. The display is erased by a h.f. signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4389472A GB1432558A (en) | 1972-09-22 | 1972-09-22 | Graticule |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4389472A GB1432558A (en) | 1972-09-22 | 1972-09-22 | Graticule |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1432558A true GB1432558A (en) | 1976-04-22 |
Family
ID=10430807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4389472A Expired GB1432558A (en) | 1972-09-22 | 1972-09-22 | Graticule |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1432558A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2722018A1 (en) * | 1977-05-14 | 1978-11-16 | Eltro Gmbh | LIQUID CRYSTAL MATRIX |
DE3219940A1 (en) * | 1982-05-27 | 1983-12-01 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Sighting device |
EP0357845A1 (en) * | 1987-04-29 | 1990-03-14 | Varo, Inc. | Solid state reticle projector for a weapon sight |
FR2656078A1 (en) * | 1989-12-20 | 1991-06-21 | France Etat Armement | Sight (aiming) telescope for combat vehicle |
EP0551032A1 (en) * | 1992-01-10 | 1993-07-14 | ESSILOR INTERNATIONAL, Compagnie Générale d'Optique | Electronic reticle, method for achieving higher precision during the use of an electronic reticle, and its application |
WO2018091803A1 (en) * | 2016-11-21 | 2018-05-24 | Psa Automoliles Sa | Lighting device comprising a screen with regions having different light transmission coefficients |
US11578944B2 (en) | 2017-08-23 | 2023-02-14 | Lumineq Oy | Sight display device and method for manufacturing sight display device |
-
1972
- 1972-09-22 GB GB4389472A patent/GB1432558A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2722018A1 (en) * | 1977-05-14 | 1978-11-16 | Eltro Gmbh | LIQUID CRYSTAL MATRIX |
DE3219940A1 (en) * | 1982-05-27 | 1983-12-01 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Sighting device |
EP0357845A1 (en) * | 1987-04-29 | 1990-03-14 | Varo, Inc. | Solid state reticle projector for a weapon sight |
FR2656078A1 (en) * | 1989-12-20 | 1991-06-21 | France Etat Armement | Sight (aiming) telescope for combat vehicle |
EP0551032A1 (en) * | 1992-01-10 | 1993-07-14 | ESSILOR INTERNATIONAL, Compagnie Générale d'Optique | Electronic reticle, method for achieving higher precision during the use of an electronic reticle, and its application |
FR2686161A1 (en) * | 1992-01-10 | 1993-07-16 | Essilor Int | ELECTRONIC RETICLE, METHOD OF OBTAINING IMPROVED PRECISION WHEN USING AN ELECTRONIC RETICLE, AND ITS APPLICATION |
WO2018091803A1 (en) * | 2016-11-21 | 2018-05-24 | Psa Automoliles Sa | Lighting device comprising a screen with regions having different light transmission coefficients |
FR3059082A1 (en) * | 2016-11-21 | 2018-05-25 | Peugeot Citroen Automobiles Sa | ZONED SCREEN LIGHTING DEVICE HAVING DIFFERENT LIGHT TRANSMISSION COEFFICIENTS |
US11578944B2 (en) | 2017-08-23 | 2023-02-14 | Lumineq Oy | Sight display device and method for manufacturing sight display device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |