US2566026A - Back illumination device for translucent indicators - Google Patents

Back illumination device for translucent indicators Download PDF

Info

Publication number
US2566026A
US2566026A US63094545A US2566026A US 2566026 A US2566026 A US 2566026A US 63094545 A US63094545 A US 63094545A US 2566026 A US2566026 A US 2566026A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
panel
dial
panels
coating
indicia
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 - Lifetime
Application number
Inventor
Jr Arthur C Hughes
Original Assignee
Jr Arthur C Hughes
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
Grant date

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/18Edge-illuminated signs
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28Structurally-combined illuminating devices
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/24Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film, e.g. title, time of exposure
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09DRAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS
    • G09D1/00Railway or like time or fare tables; Indicating or reading aids therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B15/00Supervisory desks or panels for centralised control or display
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S116/00Signals and indicators
    • Y10S116/36Illuminated dial and pointer

Description

1951 I A. c. HUGHES, JR 4 2,566,026

BACK ILLUMINATION DEVICE FOR TRANSLUCENT INDICATORS Filed NOV. 26, 1945 6s v I 39 w 38 as ATA A 6 DATA m 6 I I Q 32 30 9 3 ATAC WQ o INVENTOR ARTHUR C.HUGHES JR.

ATTORNEY Patented Aug. 28, 1951 BACK ILLUMINATION DEVICE FOR TRAN SLUCENT INDICATORS Arthur 0. Hughes, Jr., Cambridge, Mass., as-

signor, by mesne assignments, to the United States of America as represented by the Secretary of the Navy Application November 26, 1945, Serial No. 630,945

7 Claims. 1

This invention relates to illuminating devices, and more particularly to an illuminating device comprising coated panels of transparent materials so disposed and lighted as to release illumination at desired spots.

Heretofore the methods of producing illumination on certain portions of large surfaces, such as panels on airborne equipment have involved the use of a considerable number of lamps. Usually such systems used a separate lamp for each dial or illuminated area and if a lamp burned-out, considerable time was necessary before that particular lamp could be replaced and normal illumination restored. In the case of an aircraft in flight, such a delay could be serious.

Other systems involved the use of plastic rods, through which light was piped and released at desired spots from the ends of the rods. This method involved a complicated physical structure where there were a number of areas to be illuminated, since a separate rod was needed for each illuminated spot.

The general object of the present invention is to overcome the foregoing difficulties.

Another object of the present invention is to provide a panel, illuminated at desired spots throughout its surface by one or two lamps so located as to be easily accessible.

An additional object is to provide approximately equal intensities of illumination at spots on a panel which are at different distances from a single source of illumination.

A further object is to minimize the drain caused on the system power supply for illuminating a panel.

A still further object is to provide an illuminated panel, the indicia of which are back illuminated by light of some color easy on the eyes of the observer.

These and other objects will be apparent from the following specification when taken with the accompanying drawings, in which:

Fig. 1 is a front view of a representative embodiment of the invention;

Fig. 2 is an enlarged view of a portion of the front panel illustrated in Fig. 1;

Fig. 3 is a section taken in the plane of line 33 of Fig. 2; and

Figs. 4 and 5 are explanatory of a detail of the invention.

The invention is here shown applied to a control panel for apparatus, such as airborne radar apparatus. In Fig. 1, a panel I carries control handles 30, 3t, and 32. These handles control dials having indicia visible through windows 38,

34 and 35, respectively. The kind of data indicated by the dials is given in illuminated letters at 36, 31 and 38, respectively. All these parts may be illuminated from a single lamp, but for safety two lamps are employed, which in this case are located behind covers 39 and 40.

A portion of panel I! is shown to enlarged scale in Fig. 2. A section through this is shown in Fig. 3.

Referring to Fig. 3, the cross section of three collaterally disposed panels is shown, panels l0 and I I being transparent plastic having metal, in this case silver, coating l2 and I3 respectively, on sides and edges, and panel I4 being translucent plastic having an opaque film IS on the face and and a colored translucent film IS on the back. A dial I! is disposed between panels [0 and II and is composed of translucent plastic having an opaque film l8 on the face and a colored translucent film IS on the back. A lamp 20 is placed in aligned holes in the two panels l0 and II, prefrably within a metal cylinder 4|, said cylinder bein cut away at the inner periphery of the holes in panels l0 and II so that light beams from the lamp can enter the panels. Light beams are reflected back and forth in panel [0 between the inner surfaces of the silver coatings I2, and in panel ll between the inner surfaces of coatings I3, and light becomes distributed within the panels in intensities dependent on the distance from the lamp. This distributed light is used to illuminate various indicia as will be hereinafter described.

Light beams 2| traveling within panel ID are released at interruptions in the silver coating l2 opposite dial H. The surface is preferably scored or scratched, as indicated at 22, and the light is released with an intensity dependent on the number and depth of the scratches. These light beams 2| pass through the colored film l9 and translucent plastic of dial l1, and illuminate in color the indicia on the face of dial II, where the opaque coating I8 is cut away or engraved. The silver coating I3 is interrupted on both sides of panel H at this spot, and the panel I4 is completely cut away at this spot, thus forming the window 35 through which dial l1 and its indicia are observed. Panel H at this spot forms in addition a dust cover and protector for dial l1.

Light beams 23 traveling within panel II are released opposite the indicia 24 forming data B in an intensity dependent on the number and.

depth of scratches 25.

Fig. 4 and Fig. 5 illustrate two forms the scratches may take, the form in Fig. 4 being used to illuminate indicia relatively close to a lamp.

such as those associated with dial 3! in Fig. 1. and the form in Fig. 5 being used to illuminate indicia farther away from a lamp, such as those associated with dial 34 in Fig. 1. The same applies to the scratches behind the windows 33, 34, and 35, there being more scratches for window 34 than for window 35.

Referring to Figs. 1 and 3, the light beams pass through the colored film l6 and, panel 14 and illuminate in color the indicia engraved in the opaque film l5 on the face of panel H. The light beams 23 in panel Ii also escape at a fiducial line 26 scratched in the rear surface of panel ll oppositedial H.

In one particular case the panels and H were made of a material known commercially as "Plexiglas and in another case of "Lucite."

Thedial I1 and panel ll were made of 3. iminated plastic material known commercially as Lamicoid.

This illuminating device solves many of the problems heretofore associated with the lightin of aircraft instrument panels and associated airborne equipment. By using only two lamps to light a large panel having many indicia, a saving in power is effected. Also, if one lamp burns out, there is still enough illum.nation to read all the panel indicia, and the diminution of intensity warns that a lamp should be replaced. Protection is also given the dials and indicators from dust and damage. The indicia are observed in red light which is the best way of avoiding the temporary blindness caused by looking at too bright an indicator, and by varying the number and depth of the scratches where light is released, 1

any desired intensity of illumination is had for each particular indicator.

By mounting the lamps behind readily removable caps 39 and 48 at the front of the panel, a

burned out lamp may be replaced from the front. Even better, a modern type of lamp may be used in which the lamp and cap are integral, and are replaced as a unit.

The invention described in the foregoing specification need not be limited to the details shown,

which are considered to be merely illustrative of one form the invention may take.

What is claimed is:

1. An illuminated indicator device comprising first and second panels of transparent material, each panel being metal coated on both faces and edges, said panels being collaterally disposed and having aligned lamp holes, a lamp in said holes, the edge coating being interrupted in said holes. a dial of translucent plastic between said panels, said dial having an opaque film engraved with indicia', the coating on the front of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at saiddial, a third panel in front of the aforesaid panels, said third panel being made of translucent plastic having a translucent colored film on the back and an opaque film on the face, said third panel having indicia engraved out of the opaque film, and the coating of said second panel being interrupted behind said indicia.

2. An illuminated indicator device comprising first and second collateral panels of transparent material having a metallic coating on both faces and edges, a lamp at an edge of said panels, the edge coating being interrupted where said lamp is locaie'i, a movable dial of translucent material located intermediate said panels, said dial having an opaque film on the face engraved with indicia. the coating and surface of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial and its surface engraved to provide a reference marker, said indicia on said movable dial being illuminated by light beams released from the interruptions in the coating of said first panel.

3. An illuminated indicator device comprising first and second panels of transparent material. each panel being metallic coated on both faces and edges, said panels being collaterally disposed and having aligned lamp holes, a lamp in said holes, the edge coating being interrupted in said holes, a dial of translucent plastic between said panels, said dial having an opaque film engraved with indicia, the coating on the front of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial, a third panel in front of the aforesaid panels, said third panel being made of translucent plastic having a translucent colored film on the back and an opaque film on the face, said third panel having indicia engraved out of the opaque film, the coating of said second panel being interrupted behind the indicia of said third panel, and means located in said third panel for exposing said lamp holes in said first and second panels whereby said lamp may be removed from the front face of said indicator device.

4. An illuminated indicator device comprising first and second collateral panels of transparent material having a metallic coating on both faces and edges, a lamp at an edge of said panels, the edge coating being interrupted where said lamp is located, a movable dial of translucent material located intermediate said panels, said dial having an opaque film on the face engraved with indicia, the coating and surface of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial and its surface engraved to provide a reference marker, said indicia on said movable dial being illuminated by light beams released from the interruptions in the coating of .said first panel. a third panel of similar material mounted in front of the aforesaid panels and having a translucent colored film on the back and an opaque film bearing appropriate engraved indicia on the face, and the coating of said second panel being interrupted behind said indicia.

5. An illuminated indicator device comprising first and second panels of transparent material, cach panel being metal coated on both faces and edges, said panels being collaterally disposed and having aligned lamp holes, a lamp in said holes, the edge coating being interrupted in said holes, a dial of translucent plastic between said panels, said dial having an opaque film engraved with indicia, the coating on the'front of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial, a third panel in front of the aforesaid panels, said third panel being made of translucent plastic having a translucent colored film r on the back and an opaque film on the face, said third panel having indicia engraved out of the opaque film, the coating of said second panel being interrupted behind said indicia, said third panel having an opening formed therein for the observation of said dial.

6. An illuminated indicator device comprising first and second panels of transparent material, each panel being metallic coated on both faces and edges, said panels being collaterally disposed and having aligned lamp holes, a lamp in said holes, the edge coating being interrupted in said holes, a dial of translucent plastic between said panels, said dial having an opaque film enraved with indicia, the coating on the front of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial, a third panel in front of the aforesaid panels, said third panel being made of translucent plastic having a translucent colored film on the back and an opaque film on the face, said third panel having indicia engraved out of the opaque film, the coating of said second panel being interrupted behind the indicia of said third panel, and means located in said third panel for exposing said lamp holes in said first and second panels whereby said lamp may be removed from the front face of said indicator device, said third panel having an opening formed therein for the observation of said dial.

7. An illuminated indicator device comprising first and second collateral panels of transparent material having a metallic coating on both faces and edges, a lamp at an edge of said panels, the edge coating being interrupted where said lamp is located, a movable dial of translucent material located intermediate said panels, said dial having an opaque film on the face engraved with indicia, the coating and surface of said first panel being interrupted at said dial, the coating of said second panel being interrupted on both sides at said dial and its surface engraved to provide a reference marker, said indicia on said movable dial being illuminated by light beams released from the interruptions in the coating of said first panel, and a third panel of similar material mounted in front of the aforesaid panels and having a translucent colored film on the back and an opaque film bearing appropriate engraved indicia on the face, and the coating of said second panel being interrupted behind said indicia. said third panel having an opening formed therein for the observation of said dial.

ARTHUR C. HUGHES, JR.

REFERENCES CITED The following references are of record in the file 01' this patent:

UNITED STATES PATENTS Number Name Date 1,950,548 Fuller Mar. 13, 1934 2,071,284 Hyland Feb. 16, 1937 2,247,969 Stewart July 1, 1941 2,272,806 Klein et a1 Feb. 10, 1942 2,278,520 Klein et a1 Apr. 7, 1942 2,305,991 Price Dec. 22, 1942 4 Hardesty Oct. 29, 1946

US2566026A 1945-11-26 1945-11-26 Back illumination device for translucent indicators Expired - Lifetime US2566026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2566026A US2566026A (en) 1945-11-26 1945-11-26 Back illumination device for translucent indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2566026A US2566026A (en) 1945-11-26 1945-11-26 Back illumination device for translucent indicators

Publications (1)

Publication Number Publication Date
US2566026A true US2566026A (en) 1951-08-28

Family

ID=24529215

Family Applications (1)

Application Number Title Priority Date Filing Date
US2566026A Expired - Lifetime US2566026A (en) 1945-11-26 1945-11-26 Back illumination device for translucent indicators

Country Status (1)

Country Link
US (1) US2566026A (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612133A (en) * 1950-04-25 1952-09-30 Avco Mfg Corp Range cluster switch
US2671163A (en) * 1949-07-01 1954-03-02 Measurements Corp Illuminated dial scale
US2672551A (en) * 1949-06-09 1954-03-16 Douglas Aircraft Co Inc Self-lighted control operating member
US2680803A (en) * 1949-08-01 1954-06-08 Bendix Aviat Corp Illuminating means for thermostats
US2682251A (en) * 1951-10-25 1954-06-29 Edwin A Neugass Illuminated knob
US2696550A (en) * 1951-11-26 1954-12-07 Edwin A Neugass Instrument lighting
US2712593A (en) * 1951-04-21 1955-07-05 Bendix Aviat Corp Edge illuminated dial
US2724766A (en) * 1952-09-19 1955-11-22 Hawley Mones Edgar Indirect panel lighting system
US2737573A (en) * 1953-10-28 1956-03-06 Gen Electric Lighting means for automatic clothes washers
US2737146A (en) * 1951-10-16 1956-03-06 Nash Kelvinator Corp Heating element control position indicator for electric range
US2740372A (en) * 1952-09-29 1956-04-03 Bendix Aviat Corp Lighting system for indicating instruments
US2751584A (en) * 1953-11-10 1956-06-19 Ncr Co Visual readout device
US2768605A (en) * 1952-04-16 1956-10-30 Bendix Aviat Corp Indicating instrument
US2821799A (en) * 1954-08-16 1958-02-04 Raymond E Partridge Composite indirectly illuminated instrument panels
US2831453A (en) * 1956-07-26 1958-04-22 George K C Hardesty Illuminated panel, dial and/or pointer by geometrical surfaces
US2848830A (en) * 1951-05-08 1958-08-26 Boeing Co Indirectly illuminated instrument panels
US2886911A (en) * 1953-07-23 1959-05-19 George K C Hardesty Duo-panel edge illumination system
DE1089842B (en) * 1953-07-13 1960-09-29 Licentia Gmbh Panel floodlit disc, especially for marine applications
DE1120716B (en) * 1956-05-15 1961-12-28 Fairey Aviat Ltd Means for illuminating the scale of combined in a display panel measuring instruments
US3020391A (en) * 1954-10-07 1962-02-06 Stiglin Vincent Vehicle illumination
US3043038A (en) * 1960-04-08 1962-07-10 Gen Electric Illuminated dial face
US3043947A (en) * 1960-04-08 1962-07-10 Gen Electric Light distributing lens system
US3162375A (en) * 1962-01-17 1964-12-22 American Radiator & Standard Instrument illuminating means
US3308785A (en) * 1963-01-30 1967-03-14 George K C Hardesty Panel mounted meter and accessory illumination system
US3578973A (en) * 1969-03-06 1971-05-18 American Atomics Corp Self-luminous light sources employing fiber optics
US3625179A (en) * 1970-03-17 1971-12-07 Mc Graw Edison Co Indirectly lighted vertical scale indicator instrument
US4012632A (en) * 1975-12-18 1977-03-15 United Technologies Corporation Discrete function advisory illumination
US4257084A (en) * 1979-02-21 1981-03-17 Reynolds Christopher H Display device
FR2492602A1 (en) * 1980-10-17 1982-04-23 Bosch Siemens Hausgeraete Household appliance has bulletin board and control eclaire
US4373282A (en) * 1979-12-26 1983-02-15 Hughes Aircraft Company Thin-panel illuminator for front-lit displays
DE3215184A1 (en) * 1982-04-23 1983-10-27 Vdo Schindling Display device, particularly for tachometers
US4431966A (en) * 1981-05-12 1984-02-14 Sangamo Weston, Inc. Modular backlighted analog/digital instrument display
US20030123262A1 (en) * 2001-12-05 2003-07-03 Toyoda Gosei Co., Ltd. Light emitting apparatus and display
US20070159846A1 (en) * 2006-01-11 2007-07-12 Alps Electric Co., Ltd. Surface emitting device
US20110273773A1 (en) * 2010-05-07 2011-11-10 Ryan Mongan Three-dimensional Screen Protector
US20120188779A1 (en) * 2011-01-24 2012-07-26 Johnson Controls Technology Company System for illuminating a vehicle interior trim component

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950548A (en) * 1932-07-07 1934-03-13 Jr Thomas J D Fuller Illuminated sign
US2071284A (en) * 1935-10-23 1937-02-16 Bendix Radio Corp Indicating device
US2247969A (en) * 1937-12-31 1941-07-01 Adlake Co Edge glow lighting system
US2272806A (en) * 1938-11-29 1942-02-10 Us Gauge Co Illuminating indicating instruments
US2278520A (en) * 1938-11-29 1942-04-07 Us Gauge Co Illuminable panel, dial, and pointer structure
US2305991A (en) * 1938-07-07 1942-12-22 Charles S Price Instrument, dial, and sheet material
US2410064A (en) * 1943-07-17 1946-10-29 George K C Hardesty Illuminated dial and pointer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950548A (en) * 1932-07-07 1934-03-13 Jr Thomas J D Fuller Illuminated sign
US2071284A (en) * 1935-10-23 1937-02-16 Bendix Radio Corp Indicating device
US2247969A (en) * 1937-12-31 1941-07-01 Adlake Co Edge glow lighting system
US2305991A (en) * 1938-07-07 1942-12-22 Charles S Price Instrument, dial, and sheet material
US2272806A (en) * 1938-11-29 1942-02-10 Us Gauge Co Illuminating indicating instruments
US2278520A (en) * 1938-11-29 1942-04-07 Us Gauge Co Illuminable panel, dial, and pointer structure
US2410064A (en) * 1943-07-17 1946-10-29 George K C Hardesty Illuminated dial and pointer

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672551A (en) * 1949-06-09 1954-03-16 Douglas Aircraft Co Inc Self-lighted control operating member
US2671163A (en) * 1949-07-01 1954-03-02 Measurements Corp Illuminated dial scale
US2680803A (en) * 1949-08-01 1954-06-08 Bendix Aviat Corp Illuminating means for thermostats
US2612133A (en) * 1950-04-25 1952-09-30 Avco Mfg Corp Range cluster switch
US2712593A (en) * 1951-04-21 1955-07-05 Bendix Aviat Corp Edge illuminated dial
US2848830A (en) * 1951-05-08 1958-08-26 Boeing Co Indirectly illuminated instrument panels
US2737146A (en) * 1951-10-16 1956-03-06 Nash Kelvinator Corp Heating element control position indicator for electric range
US2682251A (en) * 1951-10-25 1954-06-29 Edwin A Neugass Illuminated knob
US2696550A (en) * 1951-11-26 1954-12-07 Edwin A Neugass Instrument lighting
US2768605A (en) * 1952-04-16 1956-10-30 Bendix Aviat Corp Indicating instrument
US2724766A (en) * 1952-09-19 1955-11-22 Hawley Mones Edgar Indirect panel lighting system
US2740372A (en) * 1952-09-29 1956-04-03 Bendix Aviat Corp Lighting system for indicating instruments
DE1089842B (en) * 1953-07-13 1960-09-29 Licentia Gmbh Panel floodlit disc, especially for marine applications
US2886911A (en) * 1953-07-23 1959-05-19 George K C Hardesty Duo-panel edge illumination system
US2737573A (en) * 1953-10-28 1956-03-06 Gen Electric Lighting means for automatic clothes washers
US2751584A (en) * 1953-11-10 1956-06-19 Ncr Co Visual readout device
US2821799A (en) * 1954-08-16 1958-02-04 Raymond E Partridge Composite indirectly illuminated instrument panels
US3020391A (en) * 1954-10-07 1962-02-06 Stiglin Vincent Vehicle illumination
DE1120716B (en) * 1956-05-15 1961-12-28 Fairey Aviat Ltd Means for illuminating the scale of combined in a display panel measuring instruments
US2831453A (en) * 1956-07-26 1958-04-22 George K C Hardesty Illuminated panel, dial and/or pointer by geometrical surfaces
US3043038A (en) * 1960-04-08 1962-07-10 Gen Electric Illuminated dial face
US3043947A (en) * 1960-04-08 1962-07-10 Gen Electric Light distributing lens system
US3162375A (en) * 1962-01-17 1964-12-22 American Radiator & Standard Instrument illuminating means
US3308785A (en) * 1963-01-30 1967-03-14 George K C Hardesty Panel mounted meter and accessory illumination system
US3578973A (en) * 1969-03-06 1971-05-18 American Atomics Corp Self-luminous light sources employing fiber optics
US3625179A (en) * 1970-03-17 1971-12-07 Mc Graw Edison Co Indirectly lighted vertical scale indicator instrument
US4012632A (en) * 1975-12-18 1977-03-15 United Technologies Corporation Discrete function advisory illumination
US4257084A (en) * 1979-02-21 1981-03-17 Reynolds Christopher H Display device
US4373282A (en) * 1979-12-26 1983-02-15 Hughes Aircraft Company Thin-panel illuminator for front-lit displays
FR2492602A1 (en) * 1980-10-17 1982-04-23 Bosch Siemens Hausgeraete Household appliance has bulletin board and control eclaire
US4431966A (en) * 1981-05-12 1984-02-14 Sangamo Weston, Inc. Modular backlighted analog/digital instrument display
DE3215184A1 (en) * 1982-04-23 1983-10-27 Vdo Schindling Display device, particularly for tachometers
US20030123262A1 (en) * 2001-12-05 2003-07-03 Toyoda Gosei Co., Ltd. Light emitting apparatus and display
US7029156B2 (en) * 2001-12-05 2006-04-18 Toyoda Gosei Co., Ltd. Light emitting apparatus and display
US20070159846A1 (en) * 2006-01-11 2007-07-12 Alps Electric Co., Ltd. Surface emitting device
US20110273773A1 (en) * 2010-05-07 2011-11-10 Ryan Mongan Three-dimensional Screen Protector
US20120188779A1 (en) * 2011-01-24 2012-07-26 Johnson Controls Technology Company System for illuminating a vehicle interior trim component
US8596803B2 (en) * 2011-01-24 2013-12-03 Johnson Controls Technology Company System for illuminating a vehicle interior trim component

Similar Documents

Publication Publication Date Title
US3481659A (en) Microscope slide
US4561042A (en) Instrument illuminating arrangement
US5037166A (en) Holographic optical element for instrument panel displays
US5404133A (en) Luminous key top
US5063379A (en) Liquid crystal indicator, preferably for motor vehicles
US4233927A (en) Instrument assembly with illuminated meter mounting panel
US2749794A (en) Illuminating glassware and method of making it
US4386826A (en) Alphanumeric display with electronically controlled colors
US4724629A (en) Illuminated display board
US3121163A (en) Luminous reticle
US1902440A (en) Sign
US2561885A (en) Illuminated dial
US3439492A (en) Chromoclock
Barry III Relationships between child training and the pictorial arts.
Ullman On visual detection of light sources
US3562746A (en) Character display device employing optical laminas of light piping elements
US3938140A (en) Data display device
US2916011A (en) System for integral instrument lighting
US5992068A (en) Sign for illumination utilizing translucent layers
US2436162A (en) X-ray film viewer
US4424449A (en) Shielded fluorescent signs
US4044708A (en) Transilluminated dial presentation
GB1097812A (en) Optical projection device
US2392979A (en) Luminous reticle
US4722028A (en) Night vision compatible and sunlight readable, lighted, word indicating pushbutton switch and indicator