EP2156092A2 - Equipment for exchange of optic-effect elements - Google Patents

Equipment for exchange of optic-effect elements

Info

Publication number
EP2156092A2
EP2156092A2 EP08757914A EP08757914A EP2156092A2 EP 2156092 A2 EP2156092 A2 EP 2156092A2 EP 08757914 A EP08757914 A EP 08757914A EP 08757914 A EP08757914 A EP 08757914A EP 2156092 A2 EP2156092 A2 EP 2156092A2
Authority
EP
European Patent Office
Prior art keywords
segments
carrier
effect elements
base
exchange
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.)
Granted
Application number
EP08757914A
Other languages
German (de)
French (fr)
Other versions
EP2156092B1 (en
Inventor
Pavel Jurik
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.)
Robe Lighting sro
Original Assignee
Robe Show Lighting sro
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 Robe Show Lighting sro filed Critical Robe Show Lighting sro
Publication of EP2156092A2 publication Critical patent/EP2156092A2/en
Application granted granted Critical
Publication of EP2156092B1 publication Critical patent/EP2156092B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/007—Lighting devices or systems producing a varying lighting effect using rotating transparent or colored disks, e.g. gobo wheels
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/105—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using magnets
    • 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 invention relates to equipment for exchange of optic-effect elements provided with a carrier of exchangeable segments holding optic effect elements and means for attachment of the segments at the carrier.
  • optic-effect elements of various kinds are incorporated into an optical path of a projector.
  • the optic-effect elements otherwise known as gobos, generally cover items like colour discs, glass plates of various designs and structures etc. which deform an image projected at a relatively great distance. Due to high temperature of used light source such an image is created on a metal, glass or any other suitable support.
  • the said optic-effect elements are attached at a carrier disc by means of a lamella inserted in to a resilient holder located in the disc centre.
  • a long-time operation results in weariness of the resilient holder and consequently segments are undesirably spontaneously loosened.
  • equipment for exchange of optic-effect elements provided with a carrier of exchangeable segments with optic effect elements and means for attachment of the segments at the carrier, which in accordance with the present invention are provided with permanent magnets, while the carrier and/or the segments are at least partially made of ferromagnetic material.
  • the carrier comprise a first base of ferromagnetic material and a second base of non-ferromagnetic material, the second base being arranged side by side with the first base and provided with a plurality of apertures having their centres located at a first pitch circle, while the means for attachment of the segments at the carrier comprise permanent magnets attached at each of the segments, the magnets showing cross-section which corresponds the shape of the apertures and length corresponding to mutual distance of both bases.
  • the means for attachment of the segments at the carrier further comprise first means for segment setting arranged at the second base and second means for segment setting arranged at each of the segments.
  • first means for segment setting are provided for by a plurality of pins the centres of which are located at the second pitch circle having a diameter different to the one of the first pitch circle, while the second means for segment setting are provided for by a recess the shape of which corresponds to at least a part of the pin cross-section.
  • both bases are mutually spaced apart.
  • the invention offers very simple attachment of the segments with optic-effect elements at the carrier in an exactly defined position, while any exchange of the segments is easy and fast.
  • the whole design manifests also simple manufacture technology feasible by low costs.
  • Fig. 1 shows a top axonometric view on a carrier having seven segments holding colour filters, one of the segments being in a released position and on Fig. 2 there is an underneath axonometric view on the carrier according to Fig. 1.
  • Fig. 3 represents an axonometric view on one segment and on Fig. 4 there is an axonometric view on a carrier with a single attached segment.
  • equipment for exchange of optic- effect elements there is shown equipment for exchange of optic- effect elements. On all the drawing the said elements are for simplicity presented only as white areas. The equipment shows seven positions occupied by the optic-effect elements, the eighths one is designed to direct lighting by plain white light.
  • equipment consisting of a carrier with attached exchangeable segments 1 holding optical-effect elements such as colour filters 2. The elements are secured attached on the carrier through means for attachment of the segments 1.
  • the carrier consists of a first base 3 made of ferromagnetic material and a second base 4 made of non-ferromagnetic material.
  • the second base 4 is arranged plane-parallel, i.e. side by side and mutually spaced apart from the first base 3. Both bases 3,4 having a shape of flat discs are mutually connected by pins 5.
  • the second base 4 is furnished with a plurality of apertures 6 having their centres located at a first pitch circle. Number of apertures 6 corresponds to the number of segments 1 attached at the carrier.
  • the said means for attachment of the segments 1 comprise on the one hand permanent magnets 7, fixed at each of the segments 1, on the other hand means for segment setting, i.e. means allowing for a correct positioning of the segments 1 at the carrier.
  • the permanent magnets 7, having a cross- section corresponding to the shape of apertures 6 and length corresponding to space between faces of both bases 3,4, are preferably stacked on the segments 1 It is obvious they can be fixed at the segments by any other way known as such.
  • a suitable material for the permanent magnets 7 there can be named e.g. NdFeB.
  • the first means for segment setting comprise a plurality of the pins 5, keeping both bases together and having heads which protrude from the outside face surface of the first base 3 of the carrier. Centres of all the pins 5 are located at a second pitch circle, the radius of which is different to the one of the first pitch circle, while angular spacing of the pins 5 is the same as angular spacing of apertures 6 of the second base 4.
  • the second means for segment setting, located at each of the segments are provided for by a recess 8, the shape of which corresponds to at least a part of the pin 5 cross-section.
  • the segment 1 When being put on the carrier the segment 1 rests by its recess 8 on respective pin 5 and its permanent magnet 7 fits into respective aperture 6 in the carrier second base 4.
  • the segment is held in its position by magnetic forces drawing the segment toward the first base 3.
  • the non-magnetic material of the second base 4 makes the insertion of the segment 1 on the carrier easier.
  • the permanent magnet portative force is fully sufficient and withstands even very rough manipulation during transport.
  • the position of the segment 1 and therefore also the optic-effect element hold by the segment 1 on the carrier is by the above described system unambiguously defined.
  • the permanent magnet 7 can be alternatively fixed at the carrier and fit into a hole in the segment ⁇ _.
  • pins 5 there can alternatively be used separate mechanical means, known as such, allowing for proper positioning of the segment 1 on the carrier.
  • the present invention is designed for lighting equipment especially for the equipment used for theatre and show stages and platforms etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Mechanical Conveyors (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

For the lighting equipment used especially for theatre and show stages and platforms there is designed equipment for exchange of optic effect with a carrier of exchangeable segments (1) holding optic effect elements (2) and means for attachment of the segments (1 ) at the carrier which are provided with permanent magnets (7), while the carrier, which consists of two bases (3,4), and/or the segments (1 ) are at least partially made of ferromagnetic material.

Description

EQUIPMENT FOR EXCHANGE OF OPTIC-EFFECT ELEMENTS
Technical Field
The invention relates to equipment for exchange of optic-effect elements provided with a carrier of exchangeable segments holding optic effect elements and means for attachment of the segments at the carrier.
Background of the Invention
To improve performance of lighting apparatus used for theatre show-program stages, optic-effect elements of various kinds are incorporated into an optical path of a projector. The optic-effect elements, otherwise known as gobos, generally cover items like colour discs, glass plates of various designs and structures etc. which deform an image projected at a relatively great distance. Due to high temperature of used light source such an image is created on a metal, glass or any other suitable support. To increase the impact there are used devices with rotating optic-effect elements as a moving picture attracts spectator attention more than static ones. Nevertheless even such elements need not to rotate continuously and an activation of a driving unit is therefore necessary. Basically there are used two systems of attachment of the elements the systems being applied with larger or less differences, by the first system the optic-effect elements are attached at a rotary disc and the elements are manually changes as the need may be. This solution is simple and cheap but uncomfortable from the practical point of view. A device of the kind manifests little space for manipulation with the elements and tools are always necessary. Such a design which is mostly used in simple lighting devices is described e.g. in the paper DE2263689. By modern and more complex devices, such as those with rotating optical effects, the mutually independent segments, each of them holding an individual element, are attached at a disc carrier and always there are changed the complete segments. Solutions of this type are described e.g. in papers US 6,601 ,973 and WO 03/000584. Here the said optic-effect elements are attached at a carrier disc by means of a lamella inserted in to a resilient holder located in the disc centre. A long-time operation results in weariness of the resilient holder and consequently segments are undesirably spontaneously loosened.
It is an object of the invention to simplify the construction of attachment of the optic-effect elements on a carrier disc and make their exchange less time and work costly by both the stationary and the rotation systems
Disclosure and Object of the Invention
The foregoing object is achieved by equipment for exchange of optic-effect elements provided with a carrier of exchangeable segments with optic effect elements and means for attachment of the segments at the carrier, which in accordance with the present invention are provided with permanent magnets, while the carrier and/or the segments are at least partially made of ferromagnetic material. Further in accordance with the present invention the carrier comprise a first base of ferromagnetic material and a second base of non-ferromagnetic material, the second base being arranged side by side with the first base and provided with a plurality of apertures having their centres located at a first pitch circle, while the means for attachment of the segments at the carrier comprise permanent magnets attached at each of the segments, the magnets showing cross-section which corresponds the shape of the apertures and length corresponding to mutual distance of both bases. The means for attachment of the segments at the carrier further comprise first means for segment setting arranged at the second base and second means for segment setting arranged at each of the segments. In a preferred embodiment the first means for segment setting are provided for by a plurality of pins the centres of which are located at the second pitch circle having a diameter different to the one of the first pitch circle, while the second means for segment setting are provided for by a recess the shape of which corresponds to at least a part of the pin cross-section. In another preferred embodiment both bases are mutually spaced apart.
The invention offers very simple attachment of the segments with optic-effect elements at the carrier in an exactly defined position, while any exchange of the segments is easy and fast. The whole design manifests also simple manufacture technology feasible by low costs.
Brief Description of the Drawings By way of examples the invention will be now described in details with reference to the accompanying drawings. Fig. 1 shows a top axonometric view on a carrier having seven segments holding colour filters, one of the segments being in a released position and on Fig. 2 there is an underneath axonometric view on the carrier according to Fig. 1. Fig. 3 represents an axonometric view on one segment and on Fig. 4 there is an axonometric view on a carrier with a single attached segment.
(Detailed) Description of Preferred Embodiments
Referring to the drawings there is shown equipment for exchange of optic- effect elements. On all the drawing the said elements are for simplicity presented only as white areas. The equipment shows seven positions occupied by the optic-effect elements, the eighths one is designed to direct lighting by plain white light. Referring to the drawings there is shown equipment consisting of a carrier with attached exchangeable segments 1 holding optical-effect elements such as colour filters 2. The elements are secured attached on the carrier through means for attachment of the segments 1.
According to the invention the carrier consists of a first base 3 made of ferromagnetic material and a second base 4 made of non-ferromagnetic material. The second base 4 is arranged plane-parallel, i.e. side by side and mutually spaced apart from the first base 3. Both bases 3,4 having a shape of flat discs are mutually connected by pins 5. The second base 4 is furnished with a plurality of apertures 6 having their centres located at a first pitch circle. Number of apertures 6 corresponds to the number of segments 1 attached at the carrier.
The said means for attachment of the segments 1 comprise on the one hand permanent magnets 7, fixed at each of the segments 1, on the other hand means for segment setting, i.e. means allowing for a correct positioning of the segments 1 at the carrier. The permanent magnets 7, having a cross- section corresponding to the shape of apertures 6 and length corresponding to space between faces of both bases 3,4, are preferably stacked on the segments 1 It is obvious they can be fixed at the segments by any other way known as such. As a suitable material for the permanent magnets 7 there can be named e.g. NdFeB.
By the embodiment shown on the drawings the first means for segment setting comprise a plurality of the pins 5, keeping both bases together and having heads which protrude from the outside face surface of the first base 3 of the carrier. Centres of all the pins 5 are located at a second pitch circle, the radius of which is different to the one of the first pitch circle, while angular spacing of the pins 5 is the same as angular spacing of apertures 6 of the second base 4. The second means for segment setting, located at each of the segments are provided for by a recess 8, the shape of which corresponds to at least a part of the pin 5 cross-section.
When being put on the carrier the segment 1 rests by its recess 8 on respective pin 5 and its permanent magnet 7 fits into respective aperture 6 in the carrier second base 4. The segment is held in its position by magnetic forces drawing the segment toward the first base 3. The non-magnetic material of the second base 4 makes the insertion of the segment 1 on the carrier easier. The permanent magnet portative force is fully sufficient and withstands even very rough manipulation during transport. The position of the segment 1 and therefore also the optic-effect element hold by the segment 1 on the carrier is by the above described system unambiguously defined.
From the above description it is obvious that the permanent magnet 7 can be alternatively fixed at the carrier and fit into a hole in the segment λ_. Similarly the permanent magnet 7, irrespective to its location, need not to fit in a hole in the opposite part, but only attracted toward the part. Nevertheless in such a case it is necessary to provide for a mechanical securing against the segment 1 side movement. Instead of pins 5 there can alternatively be used separate mechanical means, known as such, allowing for proper positioning of the segment 1 on the carrier.
Industrial applications The present invention is designed for lighting equipment especially for the equipment used for theatre and show stages and platforms etc.

Claims

C L A I M S
1. Equipment for exchange of optic effect elements provided with a carrier of exchangeable segments holding optic effect elements and means for attachment of the segments at the carrier, characterized in, that the means for attachment of the segments (1) at the carrier are provided with permanent magnets (7), while the carrier and/or the segments are at least partially made of ferromagnetic material.
2. Equipment for exchange of optic effect elements according to claim 1 , characterized in, that the carrier comprise a first base (3) of ferromagnetic material and a second base (4) of non-ferromagnetic material, the second base (4) being arranged plane-parallel with the first base (3) and provided with a plurality of apertures (6) having their centres located at a first pitch circle, while the means for attachment of the segments at the carrier comprise permanent magnets (7) attached at each of the segments (1), the permanent magnets (7) showing cross-section which corresponds the shape of the apertures and length corresponding to mutual distance of both bases, provided the means for attachment of the segments at the carrier further comprise first means for segment setting arranged at the second base (4) and second means for segment setting arranged at each of the segments (1)
3. Equipment for exchange of optic effect elements according to claim 2, characterized in, that the first means for segment setting are provided for by a plurality of pins (5) the centres of which are located at the second pitch circle having a diameter different to the one of the first pitch circle, while the second means for segment setting are provided for by a recess (8) the shape of which corresponds to at least a part of the pin cross-section
4. Equipment for exchange of optic effect elements according to claim 2 or 3, characterized in, that both bases (3,4) are mutually spaced apart.
EP08757914.0A 2007-06-06 2008-06-03 Equipment for exchange of optic-effect elements Active EP2156092B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ20070390A CZ2007390A3 (en) 2007-06-06 2007-06-06 Device for changing effects
PCT/CZ2008/000060 WO2008148362A2 (en) 2007-06-06 2008-06-03 Equipment for exchange of optic-effect elements

Publications (2)

Publication Number Publication Date
EP2156092A2 true EP2156092A2 (en) 2010-02-24
EP2156092B1 EP2156092B1 (en) 2014-05-21

Family

ID=40094219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08757914.0A Active EP2156092B1 (en) 2007-06-06 2008-06-03 Equipment for exchange of optic-effect elements

Country Status (3)

Country Link
EP (1) EP2156092B1 (en)
CZ (1) CZ2007390A3 (en)
WO (1) WO2008148362A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100246182A1 (en) * 2009-03-31 2010-09-30 Robe Lighting Spring slot&lock quick-change gobo changer system
JP5702216B2 (en) * 2011-04-22 2015-04-15 株式会社小糸製作所 Optical unit
US10408402B2 (en) 2014-03-10 2019-09-10 Robe Lighting S.R.O. Optical system for a LED luminaire
CN107152636B (en) * 2017-05-31 2020-10-13 苏州元联科技创业园管理有限公司 Lamp capable of emitting light locally

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862733A (en) * 1958-05-02 1961-03-15 Margarete Camilla Schneider An adapter for the attachment of lens accessories
FR2754041B1 (en) * 1996-10-02 1998-12-04 Marechal Dominique DEVICE FOR THE OCCULTATION OF LIGHT RAYS FROM PROJECTORS
US6601973B2 (en) 2000-06-26 2003-08-05 Martin Professional A/S Light effects system
CZ14789U1 (en) 2001-06-22 2004-10-11 Rudolf Ing. Müller Mobile gasoline filling station
US6971770B2 (en) * 2001-09-06 2005-12-06 Martin Professional A/S Lighting apparatus
GB2423144B (en) * 2005-02-10 2009-08-05 Richard Liddle Lighting system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008148362A2 *

Also Published As

Publication number Publication date
WO2008148362A3 (en) 2009-03-26
WO2008148362A2 (en) 2008-12-11
EP2156092B1 (en) 2014-05-21
CZ2007390A3 (en) 2008-12-17

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