EP1001210A1 - Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio - Google Patents

Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio Download PDF

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Publication number
EP1001210A1
EP1001210A1 EP98120785A EP98120785A EP1001210A1 EP 1001210 A1 EP1001210 A1 EP 1001210A1 EP 98120785 A EP98120785 A EP 98120785A EP 98120785 A EP98120785 A EP 98120785A EP 1001210 A1 EP1001210 A1 EP 1001210A1
Authority
EP
European Patent Office
Prior art keywords
imaging system
lens
gobo
lens element
iris diaphragm
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Withdrawn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
EP98120785A
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German (de)
English (en)
Inventor
Josef Dipl.-Ing. Altmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP98120785A priority Critical patent/EP1001210A1/fr
Publication of EP1001210A1 publication Critical patent/EP1001210A1/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Withdrawn legal-status Critical Current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
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • 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
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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 an imaging system changeable focal length for a headlight Stage / studio technology comprehensively a first, one Illuminated lens member facing and the Illumination location turned away, a light-generating Element facing second lens member, the first and the second lens member displaceable against each other are, as well as one between a condenser system and the second lens element in the beam path arranged combination of an iris, one Panel slider set and a gobo slot (Operating part).
  • the gobo slot serves for insertion of effect diaphragms in the beam path. It can be out there is a slide for receiving the gobo (s), one or more presets for recording from Gobos, which can be optionally in the Beam path of the headlight by moving the Slider can be brought.
  • Headlights are used for lighting, whose light cone depends on the setting at the lighting location have a different size can.
  • the so-called scattering angle, as in DIN 5037 sheet 1, 2.3.1 is defined in one the largest possible area to be changeable. To do this achieve is with known imaging systems provided that the two lens members relative are displaceable to each other.
  • Imaging systems exist Lens and aberration, for example spherical and / or chromatic aberrations.
  • disturbing in the illuminating light cone Effects for example in the form of uneven Illuminance distributions occur. This leads to that several different headlights for a very wide range of scattering angles can be used have to.
  • the invention is therefore based on the object Imaging system with variable focal length for a spotlight of the stage / studio technology of the Generic type in such a way that on the one hand as large a variation of the Scattering angle range, on the other hand a complete Illumination of the iris as well as the Effect panels and the gobos at optimal Mapping performance is made possible.
  • iris diaphragm, gobo slot, Aperture slide set in the beam path behind the condenser system in front iris diaphragm, diaphragm slide set, Gobo slot.
  • the light generating element e.g. a photosensitive Inserted paper into the gobo slot
  • Contour generated elements using the light sensitive Fix paper e.g. during the theatrical performance is inserted into the gobo slot.
  • Another advantageous embodiment provides that on the shutter slide set another compartment is provided, in which a replaceable iris diaphragm or a gobo holder with a gobo or one Decorative perforated panel can be inserted.
  • the shutter set either in Interaction with focusing on one Iris diaphragm or a gobo projection come. Because of the close proximity of the shutter slides there is an iris or gobo good sharpness of the projected subject and the pushed off Contour. It is particularly advantageous that the iris diaphragm exposed to high temperatures if damaged can be replaced without the control part must be dismantled.
  • the power ratio is preferred depending on the shape and luminance of the light-generating element of the headlight selected.
  • both lens elements can comprise one or more lenses with spherical surfaces.
  • first and / or the second lens member a or comprise several lenses with aspherical surfaces.
  • first and / or the second lens member Combinations of one or more lenses with include spherical and aspherical surfaces.
  • first and / or the second lens member one of Center point changing towards the edge, for example decreasing or increasing Refractive index curve on.
  • Adjust headlight tube which is usually rectangular or square.
  • the light sources in most cases either an elongated arc or one have square or rectangular filament.
  • the light source shape appears in a blurred form in the Area of the first lens element in the headlight tube as an image, with certain marginal areas one circular lens is only a small one Have luminance.
  • the cross section of the Headlight tube should be kept as small as possible, it is advantageous to e.g. a square or inscribe a rectangular lens element.
  • the two Lens elements are displaceable against each other in such a way that they are very tight in the maximum shifted state, are arranged adjacent to each other.
  • This will a very large one with an optimal imaging performance Scatter angle variation range, which is defined as the ratio of maximum spread angle to minimum Scattering angle, possible.
  • Scatter angle variation range could especially with the above described, known from the prior art Imaging systems have not yet been achieved.
  • Scatter angle variation ranges from 1: 3 and more achieve while maintaining relatively good imaging properties of the imaging system. Here imaging errors are minimized.
  • the lenses can different technical or optical glasses exhibit.
  • the lens links can be on the most varied Way, for example manually, against each other be moved.
  • An advantageous embodiment the invention provides that the two lens members from one controlled by a control circuit Motor can be moved against each other.
  • the iris diaphragm is advantageously also one open and open motor controlled by a control circuit closable.
  • a Spotlights for stage / studio technology e.g. Daylight gas discharge lamp 10, for example one Xenon short-arc lamp, or a halogen incandescent lamp, with a concave mirror 11 for focusing light, a condenser with two condenser lenses 21, 22 and an imaging system 30 with a first, the Lens member 31 facing illumination location, one second, facing away from the lighting location and the lamp 10 facing second lens member 32, the first and the second lens member 31, 32 so displaceable are that their distance can be changed, an iris diaphragm 33, a gobo slot 34, which the insertion different effects screens, and one Aperture slide set 35.
  • Daylight gas discharge lamp 10 for example one Xenon short-arc lamp, or a halogen incandescent lamp
  • a concave mirror 11 for focusing light
  • a condenser with two condenser lenses 21, 22 for focusing light
  • a condenser with two condenser lenses 21, 22 for focusing light
  • the light rays emerging from the condenser system 20 are slightly convergent. Illumination the iris diaphragm 33 and a strong decrease in illuminance Avoiding to the bezel edge is like in 1, provided that the iris diaphragm 33rd between the gobo slot 34 and the shutter set 35 is arranged.
  • iris diaphragm 33 - as in FIG. 2 shown - also directly behind the condenser system 20 are arranged. This is followed by the Aperture slide set 35 and the gobo slot 34.
  • the iris diaphragm 33 can also be adjacent in FIG a designated storage compartment of the shutter set 35 may be arranged (Fig. 3), which but also the gobo holder 34 instead of the iris diaphragm 33 record with a gobo or with a decorative aperture can.
  • a known one manually or controllable by motor Darkening device 40 is provided especially with gas discharge lamps, their brightness cannot be varied arbitrarily, one enables continuous darkening.
  • this Darkening device 40 can be used Brightness control at the front end of the tube - in front the first lens element 31 in the tube - a fixed one known manually or controllable motor operable blind 50 with movable slats to be ordered. Through this blind a by introducing the darkening device 40 caused within the imaging beam path Reduction of the max. Headlight scattering angle avoided.
  • the second Lens member 32 has a refractive power that is larger or equal to twice and less than or equal to that Three times the refractive power of the first lens member 31 is.
  • the refractive power ratio depends on the luminance and the shape of the light-generating element, e.g. the arc of a gas discharge lamp or Filament of a light bulb, from.
  • a halogen incandescent lamp with 1.2 kW Power is the power ratio, which e.g. a scattering angle variation range of 3: 1 allows at 2.3.
  • a halogen light bulb with 2.5 kW which is a filament with larger Has luminance
  • the refractive power ratio is approx. 2.8: 1.
  • the lenses of the two lens elements have one free diameter from approx. 150 mm up to approx. 250 mm on.
  • the lens members 31, 32 displaceable relative to one another in this way are that both lens members are shifted to the maximum Condition as close to each other as possible are arranged.
  • halogen light bulbs can the two lens members up to about 2 to Approximate 5 mm.
  • the two lens elements 31, 32 can for example one or more lenses with spherical surfaces or Lenses with aspherical surfaces or also Combinations of these have.
  • the second lens member 32 can advantageously also one from the center to the edge the lens / lenses changing, for example have decreasing refractive power curve.
  • the lenses of the lens limbs be rectangular or square.
  • This Training of the headlight tube and the lenses of the Lentils takes into account the fact that the Light sources in most cases either one elongated arc or a square or have rectangular filament. Because the light source shape in the blurred area of the first lens element appears in the headlight tube as a picture and certain edge areas of a circular lens would only have a low luminance, on the other hand, the cross section of the Headlight tube should be kept as small as possible it is advantageous to use the headlight tube square or rectangular lens element to inscribe.
  • the two lens members 31, 32 can on the one hand manually moved against each other. But it is also possible that they shifted against each other by motor be, the motors from a control circuit can be controlled (not shown).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP98120785A 1998-11-02 1998-11-02 Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio Withdrawn EP1001210A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98120785A EP1001210A1 (fr) 1998-11-02 1998-11-02 Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98120785A EP1001210A1 (fr) 1998-11-02 1998-11-02 Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio

Publications (1)

Publication Number Publication Date
EP1001210A1 true EP1001210A1 (fr) 2000-05-17

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EP98120785A Withdrawn EP1001210A1 (fr) 1998-11-02 1998-11-02 Système de projection d'images, à longeur focale modifiable pour les techniques d'éclairage sur scène ou en studio

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20091563A1 (it) * 2009-09-11 2011-03-12 Clay Paky Spa Proiettore per palcoscenico e metodo per operare un proiettore per palcoscenico
ITMI20121060A1 (it) * 2012-06-18 2013-12-19 Clay Paky Spa Proiettore da palcoscenico per variare l'uniformita' di concentrazione del fascio luminoso e metodo per operare detto proiettore da palcoscenico

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890208A (en) * 1986-09-19 1989-12-26 Lehigh University Stage lighting apparatus
GB2239938A (en) * 1990-01-15 1991-07-17 Pierce Harvey Peter Roger Variable colour spotlight
US5402326A (en) * 1993-11-12 1995-03-28 High End Systems, Inc. Gobo holder for a lighting system
DE19643220C1 (de) 1996-08-23 1998-02-12 Josef Dipl Ing Altmann Abbildungssystem mit veränderbarer Brennweite für einen Scheinwerfer der Bühnen-/Studiotechnik
EP0828111A1 (fr) 1996-08-23 1998-03-11 Altmann, Josef, Dipl.-Ing., Ingenieurbüro für Optik und Lichttechnik Système de formation d'image à focale variable pour un projecteur de plateau
GB2317003A (en) * 1996-09-06 1998-03-11 Starlite Systems Technology Li Lamp unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890208A (en) * 1986-09-19 1989-12-26 Lehigh University Stage lighting apparatus
GB2239938A (en) * 1990-01-15 1991-07-17 Pierce Harvey Peter Roger Variable colour spotlight
US5402326A (en) * 1993-11-12 1995-03-28 High End Systems, Inc. Gobo holder for a lighting system
DE19643220C1 (de) 1996-08-23 1998-02-12 Josef Dipl Ing Altmann Abbildungssystem mit veränderbarer Brennweite für einen Scheinwerfer der Bühnen-/Studiotechnik
EP0828111A1 (fr) 1996-08-23 1998-03-11 Altmann, Josef, Dipl.-Ing., Ingenieurbüro für Optik und Lichttechnik Système de formation d'image à focale variable pour un projecteur de plateau
GB2317003A (en) * 1996-09-06 1998-03-11 Starlite Systems Technology Li Lamp unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J. ALTMANN: "darstellung verschiedener scheinwerfersysteme", ZEITSCHRIFT BUEHNENTECHNISCHE RUNDSCHAU, vol. 3, 1979, pages 20 - 23

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20091563A1 (it) * 2009-09-11 2011-03-12 Clay Paky Spa Proiettore per palcoscenico e metodo per operare un proiettore per palcoscenico
US8408755B2 (en) 2009-09-11 2013-04-02 Clay Paky S.P.A. Stage lighting fixture and method of operating a stage lighting fixture
ITMI20121060A1 (it) * 2012-06-18 2013-12-19 Clay Paky Spa Proiettore da palcoscenico per variare l'uniformita' di concentrazione del fascio luminoso e metodo per operare detto proiettore da palcoscenico
CN103574480A (zh) * 2012-06-18 2014-02-12 百奇股份有限公司 舞台灯光器具和用于操作该舞台灯光器具的方法
EP2677236A3 (fr) * 2012-06-18 2014-07-30 Clay Paky S.p.A. Dispositif d'éclairage de scène pour faire varier l'uniformité de concentration de faisceau lumineux et procédé pour faire fonctionner ledit dispositif
CN103574480B (zh) * 2012-06-18 2016-12-28 百奇股份有限公司 舞台灯光器具和用于操作该舞台灯光器具的方法
US9574729B2 (en) 2012-06-18 2017-02-21 Clay Paky S.P.A. Stage light fixture for varying the light beam concentration uniformity and method for operating said stage light fixture

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