EP0073205A1 - Device allowing the visualization of an image carried by a transparent medium - Google Patents
Device allowing the visualization of an image carried by a transparent mediumInfo
- Publication number
- EP0073205A1 EP0073205A1 EP19820900535 EP82900535A EP0073205A1 EP 0073205 A1 EP0073205 A1 EP 0073205A1 EP 19820900535 EP19820900535 EP 19820900535 EP 82900535 A EP82900535 A EP 82900535A EP 0073205 A1 EP0073205 A1 EP 0073205A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- image
- face
- reflective
- device allowing
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B27/02—Viewing or reading apparatus
- G02B27/022—Viewing apparatus
- G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
Definitions
- the present invention relates to a device for observing an image carried by a transparent support and which, therefore, is mainly intended to allow the observation of photographic or radiological negatives or slides, for example.
- Lighting devices comprising a plate of transparent material lit by the edge. Such devices are intended to make visible, by a contrasting effect, patterns presented by the anterior face of said plate.
- the object of the present invention is to use a device of the same kind for the observation of photographic negatives or slides.
- the single figure is a perspective view, with partial section, of a device allowing the observation of images carried by a transparent support.
- the device shown comprises a plate 1 of artificial glass, known in the trade under the name of PLEXIGLAS (registered trademark), forming a light guide, whose lateral faces such as 2 are perfectly polished, and which is surrounded by a metal frame 3.
- This frame encloses, along one of its sides, a lighting device constituted by a neon tube 4 and by a parabolic reflector 5.
- the means ensuring the lighting of the plate 1, by its edge could be different (incandescent lamp, luminescent source or other), and that they could also extend along more than one sides of the plate, or even along all four sides of it.
- the rear face 6 of the plate is coated with a reflective layer 7 affixed directly on it. This layer 7 could be replaced by a mirror applied against the face 6, provided that the contact is close to the point of actually making an optical contact, for example with intermediate application of Canada balsam.
- the device further comprises a transparent sheet 8, forming a cover, articulated by means of a piano hinge 9 to the front face 3a of the part of the frame 3 covering the inner edge of the plate 1.
- This cover 8 can occupy a position folded down, as shown in the drawing, and, by a rotation in the direction of the arrow 10 around the hinge 9, a second position in which its upper edge, designated by 11, slightly rounded, comes to hang on the front face 3a , of the part of the frame 3 covering the upper edge of the plate 1.
- This part 3a of the frame 3 is chamfered at 12 to receive the edge 11 of the cover 8 while the same chamfer 12 of the front face 3a of the part of the frame 3 covering the lower edge of the plate is intended to receive the transparent film supporting the image to be observed.
- the cover 8 is raised, applying the image tightly against the front face 13 of the plate 1.
- the image, view, text or other is then made visible by the lighting to which the plate 1 is subjected.
Abstract
L'image a observer se place contre la face anterieure (13) d'une plaque transparente (1) de matiere plastique, formant guide de lumiere, eclairee par sa tranche (2) par un tube au neon (4) et un projecteur parabolique (5). La face posterieure (6) de la plaque (1) etant revetue d'une couche de matiere reflechissante (7), l'image, negatif photographique ou diapositive, est eclairee et est ainsi rendue visible.The image to be observed is placed against the front face (13) of a transparent plate (1) of plastic material, forming a light guide, illuminated by its edge (2) by a neon tube (4) and a parabolic projector. (5). The posterior face (6) of the plate (1) being coated with a layer of reflective material (7), the image, photographic negative or slide, is illuminated and is thus made visible.
Description
Dispositif permettant l'observation d'une image portée par un support transparent. Device allowing the observation of an image carried by a transparent support.
La présente invention a pour objet un dispositif permettant l'observation d'une image portée par un support transparent et qui, par conséquent, est principalement destiné à permettre l'observation de négatifs photographiques ou radiologiques ou de diapositives, par exemple.The present invention relates to a device for observing an image carried by a transparent support and which, therefore, is mainly intended to allow the observation of photographic or radiological negatives or slides, for example.
On connaît des dispositifs d'éclairage comportant une plaque de matière transparente éclairée par la tranche. De tels dispositifs sont destinés à rendre visibles, par un effet de contraste, des motifs que présente la face antérieure de ladite plaque.Lighting devices are known comprising a plate of transparent material lit by the edge. Such devices are intended to make visible, by a contrasting effect, patterns presented by the anterior face of said plate.
Le but de la présente invention est d'utiliser un dispositif du même genre pour l'observation de négatifs photographiques ou de diapositives.The object of the present invention is to use a device of the same kind for the observation of photographic negatives or slides.
Ce but est atteint grâce aux moyens définis dans la revendication 1.
Le dessin représente, à titre d'exemple, une forme d'exécution de l'objet de l'invention.This object is achieved by the means defined in claim 1. The drawing represents, by way of example, an embodiment of the subject of the invention.
La figure unique est une vue en perspective, avec coupe partielle, d'un dispositif permettant l'observation d'images portées par un support transparent.The single figure is a perspective view, with partial section, of a device allowing the observation of images carried by a transparent support.
Le dispositif représenté comprend une plaque 1 de verre artificiel, connu dans le commerce sous le nom de PLEXIGLAS (marque déposée), formant guide de lumière, dont les faces latérales telles que 2 sont parfaitement polies, et qui est entourée d'un cadre métallique 3. Ce cadre enferme, le long d'un de ses côtés, un dispositif d'éclairage constitué par un tube au néon 4 et par un réflecteur parabolique 5.The device shown comprises a plate 1 of artificial glass, known in the trade under the name of PLEXIGLAS (registered trademark), forming a light guide, whose lateral faces such as 2 are perfectly polished, and which is surrounded by a metal frame 3. This frame encloses, along one of its sides, a lighting device constituted by a neon tube 4 and by a parabolic reflector 5.
Il est à remarquer que les moyens assurant l'éclairage de la plaque 1, par sa tranche, pourraient être différents (lampe à incandescence, source luminescente ou autre), et qu'ils pourraient également s'étendre le long de plus d'un des côtés de la plaque, voire le long des quatre côtés de celle-ci.
La face postérieure 6 de la plaque est revêtue d'une couche réfléchissante 7 apposée directement sur elle. Cette couche 7 pourrait être remplacée par un miroir appliqué contre la face 6, pour autant que le contact soit étroit au point de réaliser réellement un contact optique, par exemple avec application intermédiaire de baume du Canada.It should be noted that the means ensuring the lighting of the plate 1, by its edge, could be different (incandescent lamp, luminescent source or other), and that they could also extend along more than one sides of the plate, or even along all four sides of it. The rear face 6 of the plate is coated with a reflective layer 7 affixed directly on it. This layer 7 could be replaced by a mirror applied against the face 6, provided that the contact is close to the point of actually making an optical contact, for example with intermediate application of Canada balsam.
Le dispositif comprend en outre une feuille transparente 8, formant couvercle, articulée au moyen d'une charnière-piano 9 à la face antérieure 3a de la partie du cadre 3 recouvrant le bord intérieur de la plaque 1. Ce couvercle 8 peut occuper une position rabattue, comme représenté au dessin, et, par une rotation dans la direction de la flèche 10 autour de la charnière 9, une deuxième position dans laquelle son bord supérieur, désigné par 11, légèrement arrondi, vient s'accrocher à la face antérieure 3a, de la partie du cadre 3 recouvrant le bord supérieur de la plaque 1. Cette partie 3a du cadre 3 est chanfreinée en 12 pour recevoir le bord 11 du couvercle 8 alors que le même chanfrein 12 de la face antérieure 3a de la partie du cadre 3 recouvrant le bord inférieur de la plaque est destiné à recevoir le film transparent supportant l'image à observer.
Lorsque l'image est en place dans le chanfrein inférieur 12, le couvercle 8 est relevé, appliquant l'image étroitement contre la face antérieure 13 de la plaque 1.The device further comprises a transparent sheet 8, forming a cover, articulated by means of a piano hinge 9 to the front face 3a of the part of the frame 3 covering the inner edge of the plate 1. This cover 8 can occupy a position folded down, as shown in the drawing, and, by a rotation in the direction of the arrow 10 around the hinge 9, a second position in which its upper edge, designated by 11, slightly rounded, comes to hang on the front face 3a , of the part of the frame 3 covering the upper edge of the plate 1. This part 3a of the frame 3 is chamfered at 12 to receive the edge 11 of the cover 8 while the same chamfer 12 of the front face 3a of the part of the frame 3 covering the lower edge of the plate is intended to receive the transparent film supporting the image to be observed. When the image is in place in the lower chamfer 12, the cover 8 is raised, applying the image tightly against the front face 13 of the plate 1.
L'image, vue, texte ou autre, est alors rendue visible par l'éclairage auquel est soumise la plaque 1.
The image, view, text or other, is then made visible by the lighting to which the plate 1 is subjected.
Claims
1. Dispositif permettant l'observation d'une image portée par un support transparent, caractérisé par le fait qu'il comporte un guide de lumière formé d'une plaque de matière translucide ou transparente éclairée par sa tranche, dont le fond est réfléchissant, la face antérieure de ladite plaque étant destinée à recevoir l'image à observer.1. Device allowing the observation of an image carried by a transparent support, characterized in that it comprises a light guide formed by a plate of translucent or transparent material illuminated by its edge, the bottom of which is reflective, the front face of said plate being intended to receive the image to be observed.
2. Dispositif suivant la revendication 1, caractérisé par le fait que le fond réfléchissant de ladite plaque est constitué par une couche de matière réfléchissante apposée directement sur la face postérieure de la plaque.2. Device according to claim 1, characterized in that the reflective bottom of said plate is constituted by a layer of reflective material affixed directly on the rear face of the plate.
3. Dispositif suivant la revendication 1, caractérisé par le fait que le fond réfléchissant de ladite plaque est constitué par un miroir appliqué contre la face postérieure de la plaque et qui est en contact optique avec elle.3. Device according to claim 1, characterized in that the reflective bottom of said plate is constituted by a mirror applied against the rear face of the plate and which is in optical contact with it.
4. Dispositif suivant la revendication 1, caractérisé par le fait, qu'il comprend une feuille de matière transparente articulée sur la face antérieure de la plaque et qui est destinée à occuper deux positions, l'une dans laquelle elle découvre ladite face antérieure, ce qui permet la mise en place et l'enlèvement de l' image, et l'autre dans laquelle elle est appliquée contre la face antérieure de la plaque, pressant l'image contre celle-ci. 4. Device according to claim 1, characterized in that it comprises a sheet of transparent material articulated on the front face of the plate and which is intended to occupy two positions, one in which it uncovers said anterior face, which allows the positioning and removal of the image, and the other in which it is applied against the anterior face of the plate, pressing the image against it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH132581A CH640356A5 (en) | 1981-02-27 | 1981-02-27 | Device for observing an image by a transparent support reach. |
| CH1325/81 | 1981-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0073205A1 true EP0073205A1 (en) | 1983-03-09 |
Family
ID=4207802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19820900535 Withdrawn EP0073205A1 (en) | 1981-02-27 | 1982-02-23 | Device allowing the visualization of an image carried by a transparent medium |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0073205A1 (en) |
| CH (1) | CH640356A5 (en) |
| WO (1) | WO1982002959A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980840A (en) * | 1997-04-25 | 1999-11-09 | Bp Amoco Corporation | Autothermic reactor and process using oxygen ion--conducting dense ceramic membrane |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3233005C2 (en) * | 1982-09-04 | 1984-07-26 | W.C. Heraeus Gmbh, 6450 Hanau | Device for checking the authenticity of stamps |
| DE8315274U1 (en) * | 1983-05-25 | 1983-11-03 | W.C. Heraeus Gmbh, 6450 Hanau | PRESSURE RECORDING BODY FOR A TEST DEVICE |
| DE9217383U1 (en) * | 1992-12-19 | 1993-02-18 | Roehm Gmbh, 6100 Darmstadt, De |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE531639A (en) * | ||||
| CH192945A (en) * | 1936-11-16 | 1937-09-15 | Mueller Daley J | Advertising device. |
| US3197902A (en) * | 1962-08-22 | 1965-08-03 | Emerson Electric Co | Light responsive sign |
| US4059916A (en) * | 1975-01-30 | 1977-11-29 | Copal Company Limited | Light diffusing device |
| GB2030750A (en) * | 1978-10-04 | 1980-04-10 | Pierre Lo International Ltd | Illuminated signs |
-
1981
- 1981-02-27 CH CH132581A patent/CH640356A5/en not_active IP Right Cessation
-
1982
- 1982-02-23 EP EP19820900535 patent/EP0073205A1/en not_active Withdrawn
- 1982-02-23 WO PCT/CH1982/000027 patent/WO1982002959A1/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8202959A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980840A (en) * | 1997-04-25 | 1999-11-09 | Bp Amoco Corporation | Autothermic reactor and process using oxygen ion--conducting dense ceramic membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1982002959A1 (en) | 1982-09-02 |
| CH640356A5 (en) | 1983-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE DE FR GB LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19830511 |