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WO1998037536A1 - Panneau a fibres optiques a changement de couleurs - Google Patents

Panneau a fibres optiques a changement de couleurs Download PDF

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Publication number
WO1998037536A1
WO1998037536A1 PCT/US1997/002593 US9702593W WO9837536A1 WO 1998037536 A1 WO1998037536 A1 WO 1998037536A1 US 9702593 W US9702593 W US 9702593W WO 9837536 A1 WO9837536 A1 WO 9837536A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
optic
recited
neck
sign
Prior art date
Application number
PCT/US1997/002593
Other languages
English (en)
Inventor
Song San Lee
Original Assignee
Fiber Does, Inc.
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 Fiber Does, Inc. filed Critical Fiber Does, Inc.
Priority to PCT/US1997/002593 priority Critical patent/WO1998037536A1/fr
Priority to AU21310/97A priority patent/AU2131097A/en
Publication of WO1998037536A1 publication Critical patent/WO1998037536A1/fr

Links

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
    • 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
    • G02B6/0005—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 of the fibre type
    • G02B6/0008—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 of the fibre type the light being emitted at the end of the fibre
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
    • G02B6/3644—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the coupling means being through-holes or wall apertures

Definitions

  • the present invention relates to signs, in particular, to fiber-optic signs.
  • a major objective of the present invention is to provide a fiber-optic sign that can uniformly render bright color-changed pattern or information.
  • optical fibers Much modern technology is closely identified with the manufacturing and the applications of optical fibers.
  • the critical feature of optical fibers is the transmission of light.
  • the light When the light is traveling in an optical medium of refractive-index n, it strikes an interface with an optical medium of refractive-index n 2 , then the total reflection will occur in case of ni larger than n 2 and an incident angle (measured to the normal of the interface) larger than a critical angle of total reflection. In such a fashion, light rays are repeatedly reflected within the optical medium of refractive-index n, in the direction of the transmission with little loss of light energy.
  • optical fibers are information display in which bare optical fibers are employed. Since an optical fiber possesses a refractive-index larger than that of air, light rays into one end of a bare optical fiber can be transmitted forward along the axis of the optical fiber and finally refracted into air at the other end of the optical fiber.
  • optical fibers allow light from a light source to be transmitted to remote and spaced locations where the light rays may be emitted as either a point or line of illumination. Because of this unique capability of light transmitting, optical fibers are used to create a variety of visual and ornamental displays.
  • U.S. Patent No. 4,917,448 to M. David Oppenheimer, "Oppenheimer” herein disclosed a lighted display device that comprises a display panel having a plurality of lighting elements arranged in a pattern, one ends of a plurality of light conducting fibers are removably received within lighting element locations on the display panel. The other ends of the fibers are received and retained within a support member. Light from a light source is received by the other ends of the fibers and conducted to the one ends of the fibers for illumination of the display panel. A sleeve member engages each of the fibers for establishing a predetermined relationship between the portions of the fibers extending between the ends thereof to facilitate untangling of the fibers.
  • a tip member is secured to the one end of each of the fibers for removably attaching the one end of each of the fibers to the display panel.
  • the bunched optical fiber set is comprised of a plurality of bus wires.
  • Each bus wire is comprised of a plurality of optical fiber filaments arranged in a row.
  • the bus wires are attached with one above another or side by side forming into a bunched optical fiber set for fastened between the color filter light source assembly and the display board.
  • the optical fiber filaments arranged in a row make it easy to pick up in proper order for fastening in the patterns on the display board.
  • an optical element is used to mount each of optic fiber on the display panel.
  • This optical element has a convex head and a cylindrical body with a dent at its tail end to hold the optic fiber.
  • a clear transparent plastic plate has to be provided to sandwich the convex head between the display panel and the transparent plastic plate.
  • a plurality of couplers of unique design can improve the intensity of light rays rendered from each single optical fiber and resiliently retain them.
  • Each display panel is designed to be easily coupled with the other one to form an adjustable display panel.
  • a fiber-optic sign includes a housing and a light filter assembly.
  • a plurality of optic fibers are next to the light filter assembly for transmitting color-changed light from the light filter assembly.
  • a display panel of a plurality of apertures is provided for mounting the optic fibers.
  • a plurality of couplers are employed with each having at least a convex head and a body.
  • the body has a first neck formed next to the convex head for providing a frictional engagement of each coupler and each aperture.
  • the body may be cylindrical in shape.
  • the body is tapered in shape so as to form a stopper next to the first neck to prevent the fiber-optic coupler from out off the aperture after it fits into the aperture.
  • the cylindrical body may have a stopper projected from the body.
  • the body has at least one first longitudinal slot and a longitudinal hole to resiliently hold an optic fiber.
  • the longitudinal hole runs through the body and the first neck for accommodating the optic fiber.
  • the body has a second slot.
  • the first and second longitudinal slots meet at a right angle and run through the body and at least part of the first neck, so the body of the coupler is divided as four parts that resiliently retain the optic fiber when it is forcibly inserted into the hole.
  • a second neck may be formed between the first neck and the convex head to allow the four parts for further flexibility to resiliently hold the optic fiber.
  • the head of the fiber-optic coupler shapes like a convex since in accordance with the optics theory, the convex head helps light to be uniformly and maximally emitted. Also, the convex head of the coupler increases the light-rendering diameter of the optic fiber, so the visible effect of the optic fiber is improved. To provide information presentation of high resolution, a gap between each aperture is defined within a range of 0.2-1.5 inch. As a result, fewer optic fibers can be used to provide a continuous information presentation without a significant discrete visible effect while cutting the workload in assembling.
  • the diameter of the first neck is substantially same as that of each aperture so that the coupler in accordance with the present invention is frictionally engaged to the aperture.
  • the convex head is designed larger than the first neck in diameter to retain the coupler in position and uniformly and maximally render light transmitted from the optic fiber
  • the stopper has a diameter larger than the first neck to hold the coupler in position once it fits into the corresponding aperture
  • the first neck larger than the second neck in diameter to allow the body for further flexibility to resiliently hold an optic fiber.
  • the first neck of the coupler has a height slightly lower than or substantially same as that of the second neck.
  • the longitudinal hole in accordance with the present invention is tapered in shape with a first end contacting with the convex head and a second end in which the first end is larger than the second end in diameter.
  • the first end is designed slightly larger than the optic fiber in diameter and the second end is slightly smaller than the optic fiber in diameter.
  • each aperture on the display panel has an aperture neck and an aperture body.
  • the aperture neck frictionally engages to the first neck of the coupler and the aperture body accommodates the body of the coupler.
  • the display panel has a first side of a pair of flanges and a second side of a projection.
  • the pair of flanges define a channel.
  • two display panels in accordance with the present invention may easily join together with the precision location by the engagement of the projection and channel. Therefore, to construct a fiber-optic sign of larger display area, it simply needs to join two or more display panels together.
  • the apertures may be covered by a plurality of removable masks. The removable masks may be taken off with the couplers being inserted into them. This design provides customers with much flexibility to customize a pattern as desired. After a pattern is determined by customers, the masks are removed with the couplers being inserted into the masked apertures that define the pattern.
  • the light filter assembly includes a halogen lamp or krypton lamp to provide light.
  • the halogen lamp is at one side of the color filter and the optic fibers at the other side of the color filter.
  • the color filter is driven by a motor to provide color-changed light to the optic fibers.
  • the couplers in accordance with the present invention are made of transparent plastic materials.
  • the transparent plastic materials include acrylic material.
  • the acrylic material has a diffusion dye additive in it to help the convex head uniformly render the light from the optic fibers.
  • a paint may be applied to the areas that defines information or pattern to be presented. Therefore, the fiber-optic signs in accordance with the present invention can be visible even in day time.
  • the paint that may be applied to the areas preferably includes vinyl, silkscreen, and enamel.
  • the housing may be taken any of a number configurations, such as circular, oval, muti-sided, or characterized configurations may be utilized as desired.
  • the present invention provides a fiber-optic sign of adjustable display area and bright color-changed light with low costs and simple assembling.
  • FIGURE 1 is an illustrational view of a preferred embodiment of the fiber-optic sign in accordance with the present invention
  • FIGURE 2 is an illustrational view of the light filter assembly in accordance with the present invention.
  • FIGURE 3 is an illustrational view of a preferred embodiment of the fiber-optic coupler in accordance with the present invention.
  • FIGURE 4 is a back view along line A- A of the fiber-optic coupler of FIG. 3 showing its construction
  • FIGURE 5 is an illustrational view of a preferred embodiment of the display panel in accordance with the present invention.
  • FIGURE 6 is an enlarged view of a part of the display panel of FIG. 5;
  • FIGURE 7 is a cross-sectional view taken along line B-B of the display panel of FIG. 5 showing its constructional details;
  • FIGURE 8 is a perspective view of the fiber-optic sign in accordance with one preferred embodiment of the present invention.
  • FIGURE 9 is a cross-sectional view taken along line C-C of the fiber-optic sign of FIG. 8 showing its constructional details;
  • FIGURE 10 is a perspective view of another fiber-optic sign formed with two display panels of FIG. 5 in which the display panels are of a plurality masked apertures;
  • FIGURE 1 1 is a perspective view of another fiber-optic sign in accordance with the present invention.
  • a fiber-optic sign 100 in accordance with the present invention includes a housing 102, a light filter assembly 104, a plurality of optic fibers 106, and a plurality of fiber-optic couplers 108, as shown in FIG. 1.
  • housing 102 may be taken any of a number configurations. As shown in the drawings, housing 102 is generally rectangular in shape. However, circular, oval, muti-sided, or character configurations may be utilized as desired. In particular, the housing 102 may be formed of plastic materials by plastic molding process or metal materials of good heat-conductive property, such as aluminum or steel.
  • the housing 102 includes a rear panel 110, a display panel 112 of a plurality of apertures 114, a top section 116, and a bottom section 118. Both top section 116 and bottom section 118 are generally formed with similar cross section and include a generally planar outer wall integrated and formed with a pair of outer flanges 120 and 122.
  • the flange 120 is resilient and utilized to compress the display panel 112 against inwardly formed generally linear flange 124.
  • the linear flanges 124 and 126 are spaced relative to the outer flanges 120 and 122 respectively in order to provide elongated channels 128 and 130 in which the edge portions of the panel members 110 and 112 may be selectively and slidingly received.
  • a light filter assembly 104 is provided, which typically includes a halogen lamp or krypton lamp 202 affixed to a lamp holder 204 that is connected to a pair of power lines 206, a color filter 208, and a motor 210, as shown in FIG. 2.
  • the halogen lamp 202 is at one side of the color filter 208 and the optic fibers 106 are mounted by fiber-optic holder 212 at the other side of the color filter 208.
  • the color filter 208 is driven by the motor 210 to rotate so as to render color-changed light.
  • the optic fibers 106 receive color-changed light from the color filter 208, transmit it to the other ends, and emits it to the air from the fiber-optic couplers 108. Consequently, a color-changed picture, design, or information that is patterned with the apertures 114 becomes visible.
  • the optic fibers are commercially available from Mitsubishi Co.
  • the light filter assembly 104 is located inside of the housing 102, however, it may also be located outside of the housing 102 with one ends of the optic fibers 106 next to it.
  • the fiber-optic coupler 108 in accordance with the present invention is shown in FIG. 3, which is made from transparent plastic material, preferably acrylic.
  • the acrylic material is mixed with a diffusion dye to change its optics property.
  • the fiber-optic coupler 108 has a convex head
  • the hole 310 may be cylindrical in shape. Preferably, it is tapered in shape with its diameter bigger as it is closer to the convex head 302.
  • Two longitudinal slots 312 and 314 extend through the body 304 and stop at the end of the first neck 306. The two longitudinal slots
  • the body 304 may be cylindrical in shape.
  • each fiber-optic coupler 108 is first inserted into each aperture 114, and then, each single optic fiber is inserted into the tapered hole 310. To firmly retain each optic fiber 106 in position, it has to first mount the fiber-optic coupler 108 on the display panel 112. To facilitate to do it, a transition portion 316 is formed at the end of the fiber-optic coupler 108. On the other hand, to prevent the fiber-optic coupler 108 from out off the aperture 114, stopper 318 is formed next to the first neck 306 to retain the fiber-optic coupler 108 in position. The convex head 302 and stopper 318 are larger than first neck 306 in diameter. Since the first neck 306 is frictionally engaged to the aperture 114 of the display panel 112, the fiber-optic coupler 108 may be assured to be secured by the space defined with both convex head 302 and stopper 318.
  • While the above preferred embodiments show a frictional engagement by the fiber-optic coupler 108 and the aperture 114, many other couplings are available.
  • a first neck is formed on the body and next to the convex head to provide fastened coupling; also, screw coupling, cap coupling, or bonding can be applied to engage the fiber-optic couplers to the apertures.
  • the coupler in accordance with the present invention may still frictional engage to the aperture by its body and resiliently hold the optic fiber by the one longitudinal slot and the longitudinal hole.
  • the design of the fiber-optic coupler 108 is to allow each single optic fiber not only to be easily inserted, but also to be firmly held. Accordingly, two longitudinal slots 312 and 314 are formed to allow the body 304 to resiliently hold each optic fiber, as shown in FIG. 4. Furthermore, the formation of the second neck 308 allows the body 304 for further flexibility to provide resilient holding of the optic fiber 106.
  • a tapered portion 320 is formed at the end of the body 304.
  • the tapered hole 310 has its diameter slightly smaller than that of the optic fiber 106 at the end of body 304, but slightly larger than or the same as that of the optic fiber 106 at the end of the second neck 308.
  • the diameter of the convex head 302 is about 0.200 inch; the diameter of the body 304 is about 0.140 inch; the diameter of the first neck 306 is about 0.146 inch for fitting into the aperture 114 of the diameter of about 0.150 inch; the diameter of the second neck 308 is about 0.125 inch; the tapered hole 310 to hold the optic fiber 106 of the diameter of about 0.028 inch has a diameter of about 0.030 inch at the biggest end and a diameter of about 0.021 inch at the smallest end; each of slots 312 and 314 is about 0.015 inch in width; the stopper 318 has a diameter of about 0.162 inch at its biggest end and a diameter of about 0.146 inch at its smallest end.
  • FIG. 4 is a back view along line A-A of the fiber-optic coupler 108 of FIG. 3 to show its construction. From FIG. 4, it can be seen that the slots 312 and 314 meet at the right angle and extend the cross section of the fiber-optic coupler 108 to divide the body 304 into four parts to resiliently hold the optic fiber 106 inserted into the tapered hole 310.
  • a display panel 500 is preferably made by plastic molding process and is square in shape, as shown in FIG. 5. It has a body portion 512 on which a plurality of apertures 114 are formed, and four sides 514, 516, 518, and 520.
  • the left side 514 is a pair of flanges extending outwardly from the body portion 512
  • the top side 516 has the similar construction as left side 514; the right side 518 and the bottom side 520 project from the body portion 512, as shown in FIG. 7.
  • At the center of each of the left side 514 and the top side 516 is of a location projection 522 or 524.
  • at the center of each of the right side 518 and the bottom side 520 is of a location concavity 526 or 528. Accordingly, two or more display panels 500 can be combined to provide a larger and adjustable display area.
  • FIG. 6 An enlarged view of a part of the display panel 500 is shown in FIG. 6 in which two kinds of apertures are shown only for illustration.
  • One is masked aperture 602 that has an aperture mask 606 of four tabs 610 connected to the body portion 512 of the display panel 500.
  • Another one is aperture 604.
  • the display panel 500 may be of only apertures 602 or 604, but not both. For example, in case that users are not for sure what the pattern or information to be presented is exactly to be or they like to design a pattern by themselves, the display panel of masked apertures 602 may be chose. Otherwise, the display panel of apertures 604 may be used.
  • users may design any pattern or information to be presented on the display panel 500, and by taking off masks 606 with the insertion of the fiber-optic couplers 108, the pattern or information defined by those apertures is displayed with the optic fibers 106. It allows users for much flexibility to display the patterns or information they desire to present, thereby making a sign with capability of customer design.
  • the display panel of masked apertures is made by plastic molding process and used for custom design, so users may combine two or more square display panel together to form a shape as required, but the display panel made by metal is a integrated sheet that has been constructed by manufactures before delivering to users.
  • FIG. 7 A cross-sectional view taken along line B-B of the display panel 500 of FIG. 5 is shown in FIG. 7.
  • the display panel 500 of apertures 702 is made from plastic, preferably acrylic material, by plastic molding process.
  • Each aperture 702 has an aperture neck 704 to engage to the first neck of the fiber-optic coupler 306.
  • An aperture body 706 is formed next to the aperture neck 704 for accommodating the body 304 and stopper 318, thereby retaining the optic fiber 106 in position.
  • Also shown in FIG. 7 is an illustration after the fiber-optic coupler 708 fits into the aperture 710.
  • the height of the aperture body 706 is preferably about 0.140 inch and the height of the aperture neck 704 is about 0.060 inch.
  • the left side 514 is of a pair of flanges 714 that define a channel 712 and the right side 518 is a projection.
  • the thickness of projection 518 matches with that of the channel 712 so that the projection 518 may closely fit into the channel 712.
  • the distance between two apertures is about 0.400 inch.
  • Rectangle fiber-optic sign 800 is a sign for one hour photo express film develop in which only apertures defining the information "1 HR PHOTO" are formed on the display panel 802.
  • the display panel 802 is made from metal material, preferably aluminum.
  • a paint may be applied to the areas 804 defined by those apertures 806 so that the information or pattern to be presented can be visible without the light source turned on. Therefore, the fiber-optic signs in accordance with the present invention can be used even in day time.
  • the paint that may be applied to the areas 804 preferably includes vinyl, silkscreen, and enamel.
  • FIGURE 9 is a cross-sectional view taken along line C-C of the display panel 802 of
  • FIG. 8 To keep panel members 902 and 904 in position, four plastic U rings 906, 908, 910, and 912 are applied to the top and bottom edges of the panel members so as to have them filled in the channels defined by each pair of flanges 914 and 916.
  • the display panel is made from metal.
  • the display panel of masked apertures is formed by plastic molding process, as shown in FIG. 10.
  • the users may design any pattern or information they like to present with removing masks from the masked apertures 902. For example, "1 HR PHOTO" may be presented with the apertures 902 defining these characters inserted by fiber-optic couplers.
  • the display panel is constructed by combining two square display panels shown in FIG. 5 that are made from plastic material, preferably acrylic, by plastic molding process Consequently, users enjoy the flexibility for customer design. Therefore, this flexibility plus the adjustable display area brings the fiber-optic signs in accordance with the present invention to a variety of applications.
  • the fiber-optic sign shown in FIG. 9 is similar to that shown in FIG 1 in construction or configuration; the only difference between them is the display panel member.
  • the one shown in FIG. 1 is made from plastic materials by plastic molding process and is constructed with the assembling two square display panels as shown in FIG. 5, but the one shown in FIG. 9 is made from one integrated metal sheet, such as aluminum sheet
  • the fiber-optic sign may be a of a character configuration.
  • FIG. 11 shows a fiber-optic sign 11A of a character "B".
  • the light filter assembly 11B is located outside the housing of the fiber-optic sign 11 A.
  • Fiber-optic bundle 11C has its one end next to the light filter assembly 11B and its another end coupled to the couplers inside of the housing 11D.
  • the fiber-optic sign in accordance with the present invention may display a word or phrase or any information as requested.
  • the maintenance of the fiber-optic signs in accordance with the present invention becomes much easy since it may use one single light filter assembly for a plurality of character fiber-optic signs and the light filter assembly may be located anywhere outside of the housing as requested

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention concerne un panneau à fibres optiques à changement de couleurs (100) comprenant un boîtier (102), un ensemble filtre lumineux (104), une pluralité de fibres optiques (106) à proximité de l'ensemble filtre lumineux pour émettre une lumière à changement de couleurs à partir de l'ensemble filtre lumineux, un panneau d'affichage (112, 500) comportant une pluralité d'ouvertures (114) pour le montage de fibres optiques. Afin de monter lesdites fibres sur le panneau d'affichage, il est prévu une pluralité de coupleurs (108) réalisés dans un matériau acrylique comportant un additif colorant, chaque coupleur présentant au moins une tête convexe, un corps, et un premier col formé entre la tête convexe (302) et le corps (304) pour assurer un couplage par friction entre les coupleurs et les ouvertures. Le corps présente deux fentes longitudinales (312, 314), perpendiculaires, et un trou conique (310). Les fentes séparent le corps en quatre parties pour maintenir de manière élastique une fibre optique dans le trou conique. Un second col (308) est formé à proximité de la tête convexe pour permettre un accroissement de l'élasticité. Les coupleurs améliorent l'effet du rendu lumineux des fibres optiques et facilitent le montage et le positionnement des fibres optiques. En outre, le panneau comporte au moins un rebord (518, 520) présentant une partie concave (526, 528) et un côté de logement (514, 516) avec une partie saillante (522, 524) de façon à permettre le raccordement d'au moins deux panneaux et assurer ainsi une grande zone d'affichage.
PCT/US1997/002593 1997-02-21 1997-02-21 Panneau a fibres optiques a changement de couleurs WO1998037536A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1997/002593 WO1998037536A1 (fr) 1997-02-21 1997-02-21 Panneau a fibres optiques a changement de couleurs
AU21310/97A AU2131097A (en) 1997-02-21 1997-02-21 Color-changed fiber-optic signs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/002593 WO1998037536A1 (fr) 1997-02-21 1997-02-21 Panneau a fibres optiques a changement de couleurs

Publications (1)

Publication Number Publication Date
WO1998037536A1 true WO1998037536A1 (fr) 1998-08-27

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PCT/US1997/002593 WO1998037536A1 (fr) 1997-02-21 1997-02-21 Panneau a fibres optiques a changement de couleurs

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WO (1) WO1998037536A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096906A1 (fr) 2010-02-08 2011-08-11 Renda Helin Cilalioglu Plaque à surface opaque qui obtient une transmittance de la lumière par l'intermédiaire des fibres optiques qu'elle contient et procédé de fabrication associé

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814948A (en) * 1987-07-02 1989-03-21 Yasuo Hasegawa Light-emitting-end mounting mechanism in optical display panel
US4917448A (en) * 1988-10-27 1990-04-17 Oppenheimer M David Lighted display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814948A (en) * 1987-07-02 1989-03-21 Yasuo Hasegawa Light-emitting-end mounting mechanism in optical display panel
US4917448A (en) * 1988-10-27 1990-04-17 Oppenheimer M David Lighted display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096906A1 (fr) 2010-02-08 2011-08-11 Renda Helin Cilalioglu Plaque à surface opaque qui obtient une transmittance de la lumière par l'intermédiaire des fibres optiques qu'elle contient et procédé de fabrication associé

Also Published As

Publication number Publication date
AU2131097A (en) 1998-09-09

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