FR2695213A1 - Cathode tube image screen filter system - uses semi-reflecting mirror with screen at 45 degree angle to horizontal - Google Patents
Cathode tube image screen filter system - uses semi-reflecting mirror with screen at 45 degree angle to horizontal Download PDFInfo
- Publication number
- FR2695213A1 FR2695213A1 FR9210506A FR9210506A FR2695213A1 FR 2695213 A1 FR2695213 A1 FR 2695213A1 FR 9210506 A FR9210506 A FR 9210506A FR 9210506 A FR9210506 A FR 9210506A FR 2695213 A1 FR2695213 A1 FR 2695213A1
- Authority
- FR
- France
- Prior art keywords
- screen
- semi
- mirror
- reflecting mirror
- user
- 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
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
La présente invention a pour objet à titre de produit industriel nouveau un dispositif de filtration par semiréflexion des rayonnements d'un écran de visualisation a tube cathodique. The subject of the present invention is, as a new industrial product, a device for filtering by semi-reflection of the radiation from a display screen with cathode ray tube.
Les utilisateurs d'écran de visualisation à tube cathodique sont soumis directement aux expositions des divers rayonnements et champs magnéto-électrique émis face à ces écrans. I1 en résulte pour certains des maux de tètes, des allergies, de la fatigue visuelle et nerveuse, etc... The users of cathode ray tube display screens are subjected directly to the exposures of the various radiations and magnetoelectric fields emitted in front of these screens. I1 results for some headaches, allergies, visual and nervous fatigue, etc ...
Le dispositif selon l'invention permet de remédier a cet inconvénient. I1 comporte en effet selon une première caractéristique un miroir semi-réfléchissant placé face à l'écran de visualisation a tube cathodique, dont l'alimentation de la bobine de déviation latérale a été inversé. L'image ainsi restitué est exposée face a l'utilisateur, en étant exempt en bonne partie des rayonnements infra-rouge et ultra-violet ainsi que des champs magnétiques et champs électriques naissant d'un tube cathodique. The device according to the invention overcomes this drawback. In fact, according to a first characteristic, it comprises a semi-reflecting mirror placed facing the display screen with cathode-ray tube, the supply of which of the lateral deflection coil has been reversed. The image thus restored is exposed in front of the user, being largely free from infrared and ultraviolet radiation as well as magnetic fields and electric fields arising from a cathode ray tube.
L'ensemble est fixé dans un meuble formant le bureau, dont une forme de l'invention est décrite ci-après à titre indicatif et nullement limitatif, en se référant au dessin annexé. The assembly is fixed in a piece of furniture forming the desk, a form of the invention of which is described below by way of indication and in no way limitative, with reference to the attached drawing.
- La figure 1 est la vue de coté en coupe de la
présente invention,
- la figure 2 est la vue de face de la présente
invention.- Figure 1 is the side view in section of the
present invention,
- Figure 2 is the front view of this
invention.
Le dispositif objet de la présente invention est remarquable en ce qui comporte un miroir semi-réfléchissant (3) placé face a l'utilisateur et face à l'écran a tube cathodique (2A), ce dernier est encastré dans un meuble (1). The device which is the subject of the present invention is remarkable in that it comprises a semi-reflecting mirror (3) placed facing the user and facing the screen with cathode-ray tube (2A), the latter is embedded in a cabinet (1) .
L'ensemble de l'écran (2) est soutenu par un support réglable (2B), la face de l'écran (2A) formant un angle d'environ 450, par rapport au bord inférieur du plateau (1A). L'inversion latérale de l'image est obtenue en inversant les deux fils de la bobine de déviation latérale du tube cathodique (2A). The entire screen (2) is supported by an adjustable support (2B), the face of the screen (2A) forming an angle of about 450, with respect to the lower edge of the plate (1A). The lateral inversion of the image is obtained by inverting the two wires of the lateral deflection coil of the cathode ray tube (2A).
Le miroir semi-réfléchissant (3) est utilisé sur sa face la plus réfléchissante pour éviter un phénomène de dédoublement. The semi-reflecting mirror (3) is used on its most reflecting side to avoid a phenomenon of duplication.
L'utilisateur peut régler l'inclinaison du miroir (3) d'avant en arrière pour un bon alignement de l'image grâce au système de pivot latéral (4). The user can adjust the tilt of the mirror (3) back and forth for proper alignment of the image thanks to the lateral pivot system (4).
Le dispositif selon l'invention est particulièrement destiné aux utilisateurs d'écran de micro-informatique. The device according to the invention is particularly intended for users of a computer screen.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9210506A FR2695213B1 (en) | 1992-08-27 | 1992-08-27 | Device for semi-reflection filtration of radiation from a cathode ray tube display screen. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9210506A FR2695213B1 (en) | 1992-08-27 | 1992-08-27 | Device for semi-reflection filtration of radiation from a cathode ray tube display screen. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2695213A1 true FR2695213A1 (en) | 1994-03-04 |
FR2695213B1 FR2695213B1 (en) | 1995-01-06 |
Family
ID=9433164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9210506A Expired - Fee Related FR2695213B1 (en) | 1992-08-27 | 1992-08-27 | Device for semi-reflection filtration of radiation from a cathode ray tube display screen. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2695213B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0758141A2 (en) * | 1995-08-05 | 1997-02-12 | Central Research Laboratories Limited | A radio frequency interference shield |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB930848A (en) * | 1960-11-02 | 1963-07-10 | Decca Ltd | Improvements in or relating to cathode ray tube display apparatus |
US4360836A (en) * | 1980-03-03 | 1982-11-23 | Judy A. Breck | Apparatus for removing X-rays and other harmful radiation from visible radiation |
US4668026A (en) * | 1985-02-01 | 1987-05-26 | The Laitram Corporation | Computer terminal support cabinet which eliminates reflection and glare from visual displays |
-
1992
- 1992-08-27 FR FR9210506A patent/FR2695213B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB930848A (en) * | 1960-11-02 | 1963-07-10 | Decca Ltd | Improvements in or relating to cathode ray tube display apparatus |
US4360836A (en) * | 1980-03-03 | 1982-11-23 | Judy A. Breck | Apparatus for removing X-rays and other harmful radiation from visible radiation |
US4668026A (en) * | 1985-02-01 | 1987-05-26 | The Laitram Corporation | Computer terminal support cabinet which eliminates reflection and glare from visual displays |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0758141A2 (en) * | 1995-08-05 | 1997-02-12 | Central Research Laboratories Limited | A radio frequency interference shield |
EP0758141A3 (en) * | 1995-08-05 | 1997-03-12 | Central Research Laboratories Limited | A radio frequency interference shield |
Also Published As
Publication number | Publication date |
---|---|
FR2695213B1 (en) | 1995-01-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |