EP0072303A1 - Projecteur à écrans colorés sur diques - Google Patents

Projecteur à écrans colorés sur diques Download PDF

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Publication number
EP0072303A1
EP0072303A1 EP82401433A EP82401433A EP0072303A1 EP 0072303 A1 EP0072303 A1 EP 0072303A1 EP 82401433 A EP82401433 A EP 82401433A EP 82401433 A EP82401433 A EP 82401433A EP 0072303 A1 EP0072303 A1 EP 0072303A1
Authority
EP
European Patent Office
Prior art keywords
disc
motor
color
common
projector according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82401433A
Other languages
German (de)
English (en)
French (fr)
Inventor
Didier Jean-Pierre Leclercq
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sarl CAMELEON
Original Assignee
Sarl CAMELEON
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 Sarl CAMELEON filed Critical Sarl CAMELEON
Publication of EP0072303A1 publication Critical patent/EP0072303A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Definitions

  • the present invention relates to a projector with colored screens selectively interposed on the light beam of a light source and mounted on at least one rotating disc driven by a motor device.
  • each projector In order not to prohibitively multiply the number of projectors used, each projector must be able to selectively project several colors, including in general the color white. On the other hand, it is requested by users that the transition between two colors is done without letting appear "white” (or any other color deemed undesirable).
  • the object of the invention is to overcome the drawbacks encountered so far by proposing a projector of the type already mentioned, silent, and allowing a change of colors without intermediate "white".
  • each disc comprises exclusively three colored sectors, one color of which is common to all the discs, and that the drive device of each disc is associated with a control device so as to make turn the disc by an increment corresponding to the passage of the colored sector crossed by the light beam to the new colored sector chosen to be crossed by the light beam by the angular path the shorter, whereby the transition from a color different from the common color to another color, different from the common color, is done without going through the common color.
  • the number of discs of the projector depends on the number of colors desired for the projector.
  • the presence of a disc allows the projection of two colors in addition to white
  • the presence of two discs allows the projection of four pure colors, in addition to white plus four colors of combinations
  • n discs allow the projection of 2n pure colors in addition to white, without counting the 2 n colors of combinations.
  • each disc comprises three sectors and only three, and that the discs can rotate in one direction or the other so that the change of the sector interposed in the light beam to another sector , necessarily neighboring by construction, is done by the shortest path, one is sure to be able to pass from one color to another without going through the white color occupying one of the three sectors.
  • the invention resides in the fact that only three colors, including white, have been placed on each disc, generally in a regular manner (that is to say on three sectors of 120 °) although that it is not an obligation, and that, moreover, the rotation of the disc for the change of colors is done in increments of 120 ° (if the arrangement is regular) positively or negatively to reach the new color.
  • the drive motor of the disc and its associated control device consist of three electromagnetic coils distributed around a central core integral with the axis of the disc, the supply of these coils being done selectively using a keyboard.
  • the shorter angular path is always taken, inherently in the very design of the system.
  • the disk drive device can comprise a stepping motor and a peripheral drive roller for the disk, or else a motor coupled directly or indirectly to the axis of the disk.
  • the first solution is less bulky when the projector has several successive discs.
  • the control of the rotation (and / or the position) of the disc acting through suitable electronics on the control in one direction or the other of the motor, can be done by optical reading, by clock, by potentiometer or other.
  • FIG. 1 shows a disc 1 comprising three sectors 2, 3, 4 regularly distributed and entirely or partially occupied by colored screens 5, 6, 7 one of which, for example 5, is white in color (deemed undesirable for transitions).
  • a light beam not shown, crosses one of the three sectors.
  • the disc 1 can rotate freely on its axis 8.
  • Three electromagnetic coils 9, 10, 11 are arranged fixed around the axis 8, distributed at 120 °. These coils are connected, on the one hand to earth O and, on the other hand, to a common supply A through three conductors 12, 13, 14 interrupted by switches 15, 16, 17. These switches are controlled from conventionally by a selective keyboard, the closing of a switch automatically unlocking the previously closed switch.
  • the disc 1 pivots about its axis 8 under the action of a peripheral roller 18 driven by a motor 19.
  • the control of this motor 19 in one direction or the other is done through conventional electronics 20 in response to manual or programmed positioning instructions on the one hand, and to the result of a digital count indicating the position, carried out by means of a photoelectric cell 21 detecting the passage of a light beam in holes 22 distributed over the entire periphery 23 of the disc 1.
  • a clock 24 replaces the optical control for controlling the motor 19.
  • the axis 8 of the disc 1 is coupled on the one hand to the motor 19 supported by a chassis 25, and, on the other hand, to a feedback potentiometer 26, also supported by the chassis 25, whose disc position indications are transmitted to the electronics 20 for controlling the motor 19.
  • FIG. 5 shows several disks 1a, 1b and 1c mounted on axes 8a, 8b, 8c, aligned on the right 27 and coupled to feedback potentiometers 26a, 26b, 26c for the control of their rotation.
  • the potentiometers are supported by supports 27a, 27b, 27c which also carry the motors 19 with rollers 18.
  • a light beam 28 successively crosses the three discs la, Ib, lc, and the selective interposition of the colored filters allows obtaining, in addition to the white color that carries a filter of each disc, six pure colors and eight combination colors.
  • the projector of the invention is a compact projector, silent thanks to its design and that it avoids unwanted whites when switching from one color to another.
  • each motor requires a positive wire and a negative wire, a common neutral wire being able to be provided for all the discs.
  • the cabling of a device according to the invention comprises only seven wires (for the embodiment of FIG. 5), while that of a conventional device with six controlled filters by cylinders requires more.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP82401433A 1981-08-03 1982-07-30 Projecteur à écrans colorés sur diques Withdrawn EP0072303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115053A FR2510719A1 (fr) 1981-08-03 1981-08-03 Projecteur a ecrans colores sur disques
FR8115053 1981-08-03

Publications (1)

Publication Number Publication Date
EP0072303A1 true EP0072303A1 (fr) 1983-02-16

Family

ID=9261117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401433A Withdrawn EP0072303A1 (fr) 1981-08-03 1982-07-30 Projecteur à écrans colorés sur diques

Country Status (4)

Country Link
EP (1) EP0072303A1 (cg-RX-API-DMAC10.html)
JP (1) JPS5846501A (cg-RX-API-DMAC10.html)
ES (1) ES8305480A1 (cg-RX-API-DMAC10.html)
FR (1) FR2510719A1 (cg-RX-API-DMAC10.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260895A3 (en) * 1986-09-11 1989-07-26 Starlite Technology Limited An illumination lamp apparatus
EP0399496A1 (en) * 1989-05-24 1990-11-28 Morpheus Lights, Inc. Selectable mechanical and electronic pattern generating aperture module
GB2290133A (en) * 1994-06-07 1995-12-13 Robert James Clutterham Lighting effect producing device
EP0685681A3 (en) * 1994-05-31 1997-08-27 Sanyo Electric Co Lighting device using solar light and control unit for such a device.
GB2311172A (en) * 1996-02-20 1997-09-17 Mad Lighting Ltd Low-torque,interchangable-rotor electric motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2511454Y2 (ja) * 1992-04-17 1996-09-25 オーデリック株式会社 投光表示装置
ES2066654B1 (es) * 1992-06-04 1998-05-01 Llorente Burgueno Maria Angele Sistema de proyectores sumergibles de iluminacion multicolor.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1453240A (fr) * 1964-08-31 1966-06-03 Perfectionnement pour lampe à éclairage réglable
GB1036900A (en) * 1963-05-18 1966-07-20 Ivor David Martin Improvements in or relating to lamps for producing coloured light

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036900A (en) * 1963-05-18 1966-07-20 Ivor David Martin Improvements in or relating to lamps for producing coloured light
FR1453240A (fr) * 1964-08-31 1966-06-03 Perfectionnement pour lampe à éclairage réglable

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260895A3 (en) * 1986-09-11 1989-07-26 Starlite Technology Limited An illumination lamp apparatus
EP0399496A1 (en) * 1989-05-24 1990-11-28 Morpheus Lights, Inc. Selectable mechanical and electronic pattern generating aperture module
US5113332A (en) * 1989-05-24 1992-05-12 Morpheus Lights, Inc. Selectable mechanical and electronic pattern generating aperture module
EP0685681A3 (en) * 1994-05-31 1997-08-27 Sanyo Electric Co Lighting device using solar light and control unit for such a device.
GB2290133A (en) * 1994-06-07 1995-12-13 Robert James Clutterham Lighting effect producing device
GB2311172A (en) * 1996-02-20 1997-09-17 Mad Lighting Ltd Low-torque,interchangable-rotor electric motor
GB2311172B (en) * 1996-02-20 2000-04-19 Mad Lighting Ltd Low-torque,interchangable-rotor electric motor

Also Published As

Publication number Publication date
ES514474A0 (es) 1983-04-16
FR2510719A1 (fr) 1983-02-04
JPS5846501A (ja) 1983-03-18
FR2510719B1 (cg-RX-API-DMAC10.html) 1984-01-06
ES8305480A1 (es) 1983-04-16

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840130

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LECLERCQ, DIDIER JEAN-PIERRE