CA2057949C - Display device - Google Patents
Display deviceInfo
- Publication number
- CA2057949C CA2057949C CA002057949A CA2057949A CA2057949C CA 2057949 C CA2057949 C CA 2057949C CA 002057949 A CA002057949 A CA 002057949A CA 2057949 A CA2057949 A CA 2057949A CA 2057949 C CA2057949 C CA 2057949C
- Authority
- CA
- Canada
- Prior art keywords
- optical fiber
- light collector
- display device
- section
- emitter body
- 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 - Fee Related
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 description 4
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Vehicle Body Suspensions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Control Of El Displays (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a display device with a plurality of indicator spots, each display point being formed by the front end of a illuminated optical fiber. The number of indicator spots for a large area display which is being viewed from a greater distance can be considerably reduced in that a light collector is fixed in front of the end of each optical fiber of a message board, which has a round cross section greater than the cross section of the optical fiber and which forms a convexly arched section of a given radius facing the end of the optical fiber and which is supplied with a circular phase facing away from the end of the optical fiber, which is at a given angle in respect to the central axis of the indicator spot, that the light collector extends away from the message board with the section formed by the phase and that the front of the light collector facing away from the optical fiber is roughened.
Description
2~7~49 DI S PI~Y DEVI CE
~ he invention relates to a display device with a plurality of indicator spots, each display point being formed by the front end of a illuminated optical fiber.
The illuminated indicator surfaces of these known display devices are small, because the optical fibers have diameters between 0.5 and 1 mm. To enlarge the indicator surface of the indicator spot, the ends of the optical fibers have already been connected with emitter bodies, which enlarge th~ indicator surface to approximately 5 mm. To generate large area displays which are visible at a large distance by means of such indicator spots it is necessary to arrange the indicator spots at close distances to each other. However, this results in a large number of indicator spots. If it is intended to provide varied messages by means of the display device, it i5 necessary to use switchable indicator spots which must be sequentially adjusted by means of a control device. Because of this the expense of such a large area display becomes very great in the area of the control device, too.
It is the object of the invention to provide a display device of the previously mentioned type, wherein the number of indicator spots is considerably reduced in large area displays wlthout degrading the visibility of the message by this.
This object of the invention is attained in accordance with the invention in that a light collector is fixed in front of the end of each optical fiber of a message board, which has a round cross section greater than the cross section of the optical fiber and which forms a convexly arched section of a given radius facing the end of the optical fiber and which is supplied with a circular phase facing away from the end of the optical fiber, which is at a given angle in respect to the central axis of the indicator spot, ~l-- -. ~ , . .
`, ' ''", " .
. , .
2~7~
that the light collector extends away from the message board with the section formed by the phase and that the front of the light collector facing away from the optical fiber is roughened.
The deflection angle of the indicator spot is enlarged with the aid of the light collector designed in this manner, so that the distances between the indicator spots can be increased and in this way the number of indicator spots per unit of surface can be greatly reduced. This design of the display device is particularly advantageous ~or large area displays which are viewed from a greater distance. The roughened front area of the light collector assures that this area of the light collector is also evenly illuminated, even though the emitting surface of the optical fiber is small. This is caused by scattering occurring at the roughened front end.
By means of the radius and the angle of the light collector it is possible to set the emitting angle of the indicator spot so that, depending on the size of the message and the viewing distance, it is possible to achieve optimal conditions with a greatly reduced number of indicator spots.
If in connection with another embodiment it is provided that the convexly arched section of the light collector extends away from the message board on its back facing the end of the optical fiber, the entrance of light into the light collector also becomes optimal.
Another advantageous embodiment provides that the end of the optical fiber is connected with an emitter body, the diameter of which is greater than that of the optical fiber, but less than that of the diameter of the light collector~ and that the center longitudinal axis of the emitter body is aligned with the center longitudinal axis of the light collector. In this manner the emitting surface is already enlarged at the end of the optical fiber.
2~7~9 So that the display device can also be used for variously adjustable messages it is provided in accordance with a further embodiment that the message board is disposed at a distance from the ends of the optical fibers or the emitter bodies, and that switching means are disposed between the ends of the optical fibers or the emitter bodies and the light collectors, by means of which the optical connections between these parts can be closed and opened.
In accordance with an embodiment the display device for variable messages is provided in such a way, that a housing is provided with one compartment for each optical fiber or emitter body, that the optical fiber or the emitter body is fixed in a hole in the bottom of the associated compartment and extends into the compartment outside of the rotational shaft of a flap seated in the open area of the compartment, that the optical fiber or emitter body limits the rotational movement of the flap to approximately ~0, that in one position the flap covers the associated compartment and in the other positior. opens the optical connection between the optical fiber or emitter body and the light collector, and that the flap can be placed into one or the other position by means of associated, pulse~controlled electromagnets, where the positions are maintained because of the residual magnetism of the electromagnets.
For an emitting angle of 7 of the indicator spot it is provided that for an emitting angle of 7 the emitter body has a diameter of 5 mm, that the light collector has a diameter of 20 mm and is disposed at a distance of 15 mm from the emitter surface of the emitter body, that the phase has an angle ~ = 60 and that the radius of the section has a value of 25 mm.
The invention will be described in detail by means of an indicator spot shown in the drawings. Shown are in:
2 ~
Fig. 1 a sectional view of a switchable indicator point in accordance with the invention in the indicating position, and Fig. 2 a sectional view of the same indicator point in the initial position = non-displaying position.
The display device in accordance with the invention comprises a housing 10 for the rotational seating of flaps 15, as shown in Fig. 1. This housing 10 essentially consists of a plate having compartments 11 which are square in cross section in the direction towards the display side and the walls of which are formed on the plate. This housing 10 may also be composed of several partial housings which have been placed together to obtain a matrix-like display device of sufficient size. The compartments 11 are arranged in lines and columns. A flap 15 is rotatably seated by means of the rotational shaft 14 in each required compartment 11 in such a way that in the initial position shown in Fig. 1, which corresponds to the non-displaying position, the flap 15 covers the associated compartment 11. A bore 12 has been cut into the bottom of the compartment 11, which receives the emitter body 30 disposed on the end of the optical fiber 30. The bore 12 in this case has been designed in such a way that the emitter body 30 is held therein by means o~ snug or press fit and extends into the associated compar~ment 11. The arrangement in this case is such that the emitter body 30 is located outside of the rotational shaft 14 of the flap 15 which preferably extends diagonally and is disposed in the area of the open side of the compartment ll. The pairs o~ electromagnets 13 associated with the flap 15 are disposed behind the compartment 11 on the outside of the bottom, i.e. the plate, by means of which the two positions of the flap 15 are set. However, the flaps 15 cannot turn by 180~ in the display position in accordance with Fig. 1, because the emitter body 30 .
:
forms a stop for the flap 15, so that the latter can turn only by 90O and lets the light coming from the emitter body 30 pass and reach a light collector 22, which is fixed in front of the emitter body 30 in a message board 20. The distance of the message board 20 is selected to be such, that the flaps 15 can take up the display position in accordance with Fig. 1. The light collectors 22 are round in cross section and embodied as sections of a rod made of glass or a transparent plastic. The cross section of the light collectors 22 is larger than the cross section of the emitter bodies 30. The center longitudinal axes of the emitter bodies 22 are aligned with the center longitudinal axes of the associated light collectors 30. The message board 20 has bores 21 for the light collectors 22, which are maintained therein by means of snug or press fit.
To increase the emitting angle of the indicator point, the light collector 22 is provided with a section 23 facing towards the emitter body 30, which is convexly arched with a radius r. On the side facing away from the emitter body 30, the light collector 22 extends out of the message board 20 with a section provided with a phase 24. This phase 24 is at an angle in respect to the center longitudinal axis of the light collector 22. The radius r and the angle ~ are those values by means of which the desired emitting angle can be achieved. The front 25 of the light collector 22 facing away from the emitter body 30 has been roughened, so that it is evenly illuminated. This is achieved, in spite of the small emitting surface of the emitter body 30, by means of light scattering. With increasing distance from the message board 20 the surface of the indicator spot becomes larger, so that the ad~oining indicator spots can be placed at correspondingly increased distances in the message board 20. For example, it is possible to display numbers and letters by means of a 5 x 7 matrix which, with a height of approximatel~ 50 cm, are 2~57~9 easily recognizable at a distance between 10 to 20 meters. In this connection an emitting angle of 7 has been obtained by means of the following layouts:
Diameter of the emitter body 30 50 mm Diameter of the light collector 22 20 mm Distance emitter body 30 to light collector 22 15 mm Radius r of the light collector 22 25 mm Angle ~ of the phase 24 60~
The electromagnets 13 have residual magnetism, so that the respectively set position of the flaps 15 is maintained until a control command for the other position is received. For this reason a pair of electromagnets 13 is assigned to each compartment 11, i.e. each flap 15. The respectively one electromaynets 13 of the pairs are used to set and maintain the display position in accordance with Fig. 1, while the flaps 15 are brought into and maintained in the initial position in accordance with Fig~ 2 when the respectively other electromagnets 13 of the pairs are excited.
In the initial position, i.e. non--displaying position, the flaps 15 close off the associated compartments 11, one sidewall of the compartment 11 being used as a stop. In this case the illuminated optical fiber 31 with the emitter body 30 is covered, so that no light can reach the associated light collector 22 placed in front.
The front of the light collector 22 and the phase 24 remain absolutely dark, so that a switching xatio between the display position and the initial position, i.e. non-displaying position, of a flap 15 can be achieved.
The display device can be constructed in the form of a matrix, where the flaps 15 with the electromagnets 13 are arranged in lines and columns. Wiring can be by means of a printed circuit board, on which the housing 10 with the connectors for the 2~5~9 electromagnets can be set and soldered. The setting coils of the pairs of electromagnets 13 form the setting matrix, while the resetting coils of the pairs of electrGmagnets 13 form the resetting matrix.
~ he invention relates to a display device with a plurality of indicator spots, each display point being formed by the front end of a illuminated optical fiber.
The illuminated indicator surfaces of these known display devices are small, because the optical fibers have diameters between 0.5 and 1 mm. To enlarge the indicator surface of the indicator spot, the ends of the optical fibers have already been connected with emitter bodies, which enlarge th~ indicator surface to approximately 5 mm. To generate large area displays which are visible at a large distance by means of such indicator spots it is necessary to arrange the indicator spots at close distances to each other. However, this results in a large number of indicator spots. If it is intended to provide varied messages by means of the display device, it i5 necessary to use switchable indicator spots which must be sequentially adjusted by means of a control device. Because of this the expense of such a large area display becomes very great in the area of the control device, too.
It is the object of the invention to provide a display device of the previously mentioned type, wherein the number of indicator spots is considerably reduced in large area displays wlthout degrading the visibility of the message by this.
This object of the invention is attained in accordance with the invention in that a light collector is fixed in front of the end of each optical fiber of a message board, which has a round cross section greater than the cross section of the optical fiber and which forms a convexly arched section of a given radius facing the end of the optical fiber and which is supplied with a circular phase facing away from the end of the optical fiber, which is at a given angle in respect to the central axis of the indicator spot, ~l-- -. ~ , . .
`, ' ''", " .
. , .
2~7~
that the light collector extends away from the message board with the section formed by the phase and that the front of the light collector facing away from the optical fiber is roughened.
The deflection angle of the indicator spot is enlarged with the aid of the light collector designed in this manner, so that the distances between the indicator spots can be increased and in this way the number of indicator spots per unit of surface can be greatly reduced. This design of the display device is particularly advantageous ~or large area displays which are viewed from a greater distance. The roughened front area of the light collector assures that this area of the light collector is also evenly illuminated, even though the emitting surface of the optical fiber is small. This is caused by scattering occurring at the roughened front end.
By means of the radius and the angle of the light collector it is possible to set the emitting angle of the indicator spot so that, depending on the size of the message and the viewing distance, it is possible to achieve optimal conditions with a greatly reduced number of indicator spots.
If in connection with another embodiment it is provided that the convexly arched section of the light collector extends away from the message board on its back facing the end of the optical fiber, the entrance of light into the light collector also becomes optimal.
Another advantageous embodiment provides that the end of the optical fiber is connected with an emitter body, the diameter of which is greater than that of the optical fiber, but less than that of the diameter of the light collector~ and that the center longitudinal axis of the emitter body is aligned with the center longitudinal axis of the light collector. In this manner the emitting surface is already enlarged at the end of the optical fiber.
2~7~9 So that the display device can also be used for variously adjustable messages it is provided in accordance with a further embodiment that the message board is disposed at a distance from the ends of the optical fibers or the emitter bodies, and that switching means are disposed between the ends of the optical fibers or the emitter bodies and the light collectors, by means of which the optical connections between these parts can be closed and opened.
In accordance with an embodiment the display device for variable messages is provided in such a way, that a housing is provided with one compartment for each optical fiber or emitter body, that the optical fiber or the emitter body is fixed in a hole in the bottom of the associated compartment and extends into the compartment outside of the rotational shaft of a flap seated in the open area of the compartment, that the optical fiber or emitter body limits the rotational movement of the flap to approximately ~0, that in one position the flap covers the associated compartment and in the other positior. opens the optical connection between the optical fiber or emitter body and the light collector, and that the flap can be placed into one or the other position by means of associated, pulse~controlled electromagnets, where the positions are maintained because of the residual magnetism of the electromagnets.
For an emitting angle of 7 of the indicator spot it is provided that for an emitting angle of 7 the emitter body has a diameter of 5 mm, that the light collector has a diameter of 20 mm and is disposed at a distance of 15 mm from the emitter surface of the emitter body, that the phase has an angle ~ = 60 and that the radius of the section has a value of 25 mm.
The invention will be described in detail by means of an indicator spot shown in the drawings. Shown are in:
2 ~
Fig. 1 a sectional view of a switchable indicator point in accordance with the invention in the indicating position, and Fig. 2 a sectional view of the same indicator point in the initial position = non-displaying position.
The display device in accordance with the invention comprises a housing 10 for the rotational seating of flaps 15, as shown in Fig. 1. This housing 10 essentially consists of a plate having compartments 11 which are square in cross section in the direction towards the display side and the walls of which are formed on the plate. This housing 10 may also be composed of several partial housings which have been placed together to obtain a matrix-like display device of sufficient size. The compartments 11 are arranged in lines and columns. A flap 15 is rotatably seated by means of the rotational shaft 14 in each required compartment 11 in such a way that in the initial position shown in Fig. 1, which corresponds to the non-displaying position, the flap 15 covers the associated compartment 11. A bore 12 has been cut into the bottom of the compartment 11, which receives the emitter body 30 disposed on the end of the optical fiber 30. The bore 12 in this case has been designed in such a way that the emitter body 30 is held therein by means o~ snug or press fit and extends into the associated compar~ment 11. The arrangement in this case is such that the emitter body 30 is located outside of the rotational shaft 14 of the flap 15 which preferably extends diagonally and is disposed in the area of the open side of the compartment ll. The pairs o~ electromagnets 13 associated with the flap 15 are disposed behind the compartment 11 on the outside of the bottom, i.e. the plate, by means of which the two positions of the flap 15 are set. However, the flaps 15 cannot turn by 180~ in the display position in accordance with Fig. 1, because the emitter body 30 .
:
forms a stop for the flap 15, so that the latter can turn only by 90O and lets the light coming from the emitter body 30 pass and reach a light collector 22, which is fixed in front of the emitter body 30 in a message board 20. The distance of the message board 20 is selected to be such, that the flaps 15 can take up the display position in accordance with Fig. 1. The light collectors 22 are round in cross section and embodied as sections of a rod made of glass or a transparent plastic. The cross section of the light collectors 22 is larger than the cross section of the emitter bodies 30. The center longitudinal axes of the emitter bodies 22 are aligned with the center longitudinal axes of the associated light collectors 30. The message board 20 has bores 21 for the light collectors 22, which are maintained therein by means of snug or press fit.
To increase the emitting angle of the indicator point, the light collector 22 is provided with a section 23 facing towards the emitter body 30, which is convexly arched with a radius r. On the side facing away from the emitter body 30, the light collector 22 extends out of the message board 20 with a section provided with a phase 24. This phase 24 is at an angle in respect to the center longitudinal axis of the light collector 22. The radius r and the angle ~ are those values by means of which the desired emitting angle can be achieved. The front 25 of the light collector 22 facing away from the emitter body 30 has been roughened, so that it is evenly illuminated. This is achieved, in spite of the small emitting surface of the emitter body 30, by means of light scattering. With increasing distance from the message board 20 the surface of the indicator spot becomes larger, so that the ad~oining indicator spots can be placed at correspondingly increased distances in the message board 20. For example, it is possible to display numbers and letters by means of a 5 x 7 matrix which, with a height of approximatel~ 50 cm, are 2~57~9 easily recognizable at a distance between 10 to 20 meters. In this connection an emitting angle of 7 has been obtained by means of the following layouts:
Diameter of the emitter body 30 50 mm Diameter of the light collector 22 20 mm Distance emitter body 30 to light collector 22 15 mm Radius r of the light collector 22 25 mm Angle ~ of the phase 24 60~
The electromagnets 13 have residual magnetism, so that the respectively set position of the flaps 15 is maintained until a control command for the other position is received. For this reason a pair of electromagnets 13 is assigned to each compartment 11, i.e. each flap 15. The respectively one electromaynets 13 of the pairs are used to set and maintain the display position in accordance with Fig. 1, while the flaps 15 are brought into and maintained in the initial position in accordance with Fig~ 2 when the respectively other electromagnets 13 of the pairs are excited.
In the initial position, i.e. non--displaying position, the flaps 15 close off the associated compartments 11, one sidewall of the compartment 11 being used as a stop. In this case the illuminated optical fiber 31 with the emitter body 30 is covered, so that no light can reach the associated light collector 22 placed in front.
The front of the light collector 22 and the phase 24 remain absolutely dark, so that a switching xatio between the display position and the initial position, i.e. non-displaying position, of a flap 15 can be achieved.
The display device can be constructed in the form of a matrix, where the flaps 15 with the electromagnets 13 are arranged in lines and columns. Wiring can be by means of a printed circuit board, on which the housing 10 with the connectors for the 2~5~9 electromagnets can be set and soldered. The setting coils of the pairs of electromagnets 13 form the setting matrix, while the resetting coils of the pairs of electrGmagnets 13 form the resetting matrix.
Claims (7)
1. A display device with a plurality of indicator spots, each display point being formed by the front end of a illuminated optical fiber, characterized in that a light collector (22) is fixed in front of the end of each optical fiber (31) of a message board (20), which has a round cross section greater than the cross section of the optical fiber (31) and which forms a convexly arched section of a given radius (r) facing the end of the optical fiber (31) and which is supplied with a circular phase (24) facing away from the end of the optical fiber (31), which is at a given angle (.alpha.) in respect to the central axis of the indicator spot, the light collector (22) extends away from the message board (20) with the section formed by the phase (24), and the front (25) of the light collector (22) facing away from the optical fiber (31) is roughened.
2. A display device in accordance with claim 1, characterized in that by means of the radius (r) and the angle (.alpha.) of the light collector (22) it is possible to set the emitting angle of the indicator spot.
3. A display device in accordance with claims 1 or 2, characterized in that the convexly arched section (23) of the light collector (22) extends away from the message board (20) on its back facing the end of the optical fiber (31).
4. A display device in accordance with one of claims 1 to 3, characterized in that the end of the optical fiber (31) is connected with an emitter body (30), the diameter of which is greater than that of the optical fiber (31), but less than that of the diameter of the light collector (22), and the center longitudinal axis of the emitter body (30) is aligned with the center longitudinal axis of the light collector 22).
5. A display device in accordance with one of claims 1 to 4, characterized in that the message board (20) is disposed at a distance from the ends of the optical fibers (31) or the emitter bodies (30), and switching means are disposed between the ends of the optical fibers (31) or the emitter bodies (30) and the light collectors (22), by means of which the optical connections between these parts can be closed and opened.
6. A display device in accordance with claim 5, characterized in that a housing (10) is provided with one compartment (11) for each optical fiber (31) or emitter body (30), the optical fiber (31) or the emitter body (30) is fixed in a hole (12) in the bottom of the associated compartment (11) and extends into the compartment (11) outside of the rotational shaft (14) of a flap (15) seated in the open area of the compartment (11), the optical fiber (31) or emitter body (30) limits the rotational movement of the flap (15) to approximately 90°, in one position the flap (15) covers the associated compartment (11) and in the other position opens the optical connection between the optical fiber (31) or emitter body (30) and the light collector (22), and the flap (15) can be placed into one or the other position by means of associated, pulse-controlled electromagnets (13), where the positions are maintained because of the residual magnetism of the electromagnets (13).
7. A display device in accordance with one of claims 1 to 6, characterized in that for an emitting angle of 7° the emitter body (30) has a diameter of 5 mm, the light collector (22) has a diameter of 20 mm and is disposed at a distance of 15 mm from the emitter surface of the emitter body (30), the phase (24) has an angle .alpha. = 60° and the radius (r) of the section (23) has a value of 25 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4040567.2-32 | 1990-12-19 | ||
| DE4040567A DE4040567C1 (en) | 1990-12-19 | 1990-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2057949A1 CA2057949A1 (en) | 1992-06-20 |
| CA2057949C true CA2057949C (en) | 1999-01-05 |
Family
ID=6420671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002057949A Expired - Fee Related CA2057949C (en) | 1990-12-19 | 1991-12-18 | Display device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0491156B1 (en) |
| AT (1) | ATE126915T1 (en) |
| CA (1) | CA2057949C (en) |
| DE (2) | DE4040567C1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793349A (en) * | 1992-03-20 | 1998-08-11 | Mark Iv Industries Limited | Electromagnetic shutter and cover |
| NL9301884A (en) * | 1993-11-02 | 1995-06-01 | Nederland Haarlem B V | Optical switch, and information medium |
| DE19824425A1 (en) * | 1998-05-30 | 1999-12-09 | Dambach Werke Gmbh | Illuminated display device for road traffic |
| DE19824499A1 (en) * | 1998-06-02 | 1999-12-09 | Dambach Werke Gmbh | Illuminated display device |
| DE20121725U1 (en) * | 2001-08-17 | 2003-04-03 | Dambach-Werke Gmbh, 76456 Kuppenheim | Illuminated display device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2172568A5 (en) * | 1972-02-18 | 1973-09-28 | Rank Organisation Ltd | |
| DE8124380U1 (en) * | 1981-08-20 | 1983-03-24 | Siemens AG, 1000 Berlin und 8000 München | INTERCHANGEABLE DISPLAY DEVICE, IN PARTICULAR FOR TRAFFIC SIGNAL INDICATORS |
| DE3319179A1 (en) * | 1983-05-21 | 1985-01-24 | Joachim Dipl.-Phys. 5020 Frechen Schick | Optical fibre system for, e.g., motor vehicle rear lamp groups |
| DE3511839A1 (en) * | 1985-03-30 | 1986-10-02 | Braun Ag, 6000 Frankfurt | Light guide for illuminating instrument displays |
| DE3822105A1 (en) * | 1988-06-30 | 1990-01-11 | Schoelly Fiberoptic Gmbh | ALTERNATIVE CHARACTER |
| DE3910678A1 (en) * | 1989-04-03 | 1990-10-04 | Philipp Struth | Single matrix in dot character, which, by the interaction of permanently luminous light sources, represents three-dimensional contours, alphanumeric characters and graphics by means of electromagnetic components |
| DE8913499U1 (en) * | 1989-05-19 | 1990-02-08 | Dambach-Werke Gmbh, 7560 Gaggenau | Display device for alphanumeric displays |
-
1990
- 1990-12-19 DE DE4040567A patent/DE4040567C1/de not_active Expired - Fee Related
-
1991
- 1991-11-11 DE DE59106313T patent/DE59106313D1/en not_active Expired - Fee Related
- 1991-11-11 EP EP91119148A patent/EP0491156B1/en not_active Expired - Lifetime
- 1991-11-11 AT AT91119148T patent/ATE126915T1/en not_active IP Right Cessation
- 1991-12-18 CA CA002057949A patent/CA2057949C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0491156A3 (en) | 1992-08-05 |
| EP0491156B1 (en) | 1995-08-23 |
| ATE126915T1 (en) | 1995-09-15 |
| DE4040567C1 (en) | 1992-06-17 |
| DE59106313D1 (en) | 1995-09-28 |
| EP0491156A2 (en) | 1992-06-24 |
| CA2057949A1 (en) | 1992-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4257041A (en) | Electro optical display device | |
| EP0463725B1 (en) | Display indicator and reed switch | |
| WO1994022127A1 (en) | Portable communication device | |
| CA2057949C (en) | Display device | |
| AU2004229057A1 (en) | Liquid crystal display device and gaming machine | |
| EP0953138A1 (en) | Device for determining the point of impact of darts on a practice target | |
| JP3199900B2 (en) | Shutter | |
| US5247600A (en) | Fiber optic data/graphic display screen | |
| JP2001149596A (en) | Pachinko machine | |
| DE69310906T2 (en) | VENDING MACHINE WITH DIAL PANEL ARRANGEMENT | |
| JPH07155442A (en) | Display of game machine | |
| US5351065A (en) | Indicator device | |
| EP0885437B1 (en) | Display device and array | |
| CA2047136A1 (en) | Processor-controlled indicator device for changes in traffic conditions | |
| CA2118702A1 (en) | Information display device | |
| US5266935A (en) | Pixel display assembly | |
| US6115013A (en) | Display element having retroreflective surface | |
| CA2171054C (en) | Display device and array | |
| CA2047135C (en) | Indicator device | |
| GB2056150A (en) | Display device | |
| US4410888A (en) | Component for module for presenting alpha numeric or like information | |
| US4103261A (en) | Laser beam shutter and beam indicator | |
| EP0288586A1 (en) | Method and apparatus for displaying information | |
| CA2093897A1 (en) | Matrix-shaped display device | |
| EP1591985A2 (en) | Electromagnetic display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |