EP3058270A1 - Système d'obturateur de cadrage amélioré pour luminaire - Google Patents

Système d'obturateur de cadrage amélioré pour luminaire

Info

Publication number
EP3058270A1
EP3058270A1 EP13818859.4A EP13818859A EP3058270A1 EP 3058270 A1 EP3058270 A1 EP 3058270A1 EP 13818859 A EP13818859 A EP 13818859A EP 3058270 A1 EP3058270 A1 EP 3058270A1
Authority
EP
European Patent Office
Prior art keywords
shutter
luminaire
blade
framing
shutter blade
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
EP13818859.4A
Other languages
German (de)
English (en)
Other versions
EP3058270B1 (fr
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 Lighting 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 Robe Lighting Inc filed Critical Robe Lighting Inc
Publication of EP3058270A1 publication Critical patent/EP3058270A1/fr
Application granted granted Critical
Publication of EP3058270B1 publication Critical patent/EP3058270B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
    • F21V11/186—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides slidable
    • 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
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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 generally relates to an automated framing shutter system, specifically to a framing shutter system for use within an automated luminaire.
  • Luminaires with automated and remotely controllable functionality are well known in the entertainment and architectural lighting markets. Such products are commonly used in theatres, television studios, concerts, theme parks, night clubs and other venues. A typical product will commonly provide control over the pan and tilt functions of the luminaire allowing the operator to control the direction the luminaire is pointing and thus the position of the light beam on the stage or in the studio. Typically this position control is done via control of the luminaire 's position in two orthogonal rotational axes usually referred to as pan and tilt. Many products provide control over other parameters such as the intensity, color, focus, beam size, beam shape and beam pattern. The beam pattern is often provided by a stencil or slide called a gobo which may be a steel, aluminum or etched glass pattern. The products manufactured by Robe Lighting such as the Robin 300E Spot are typical of the art.
  • the optical systems of such luminaires may include a gate or aperture through which the light is constrained to pass.
  • Mounted in or near this gate may be devices such as gobos, patterns, irises, color filters or other beam modifying devices as known in the art.
  • the use of a framing shutter system at this point allows control over the size and shape of the output beam and thus the size and shape of the image projected onto a surface.
  • FIG. 1 illustrates a multiparameter automated luminaire system 10.
  • These systems commonly include a plurality of multiparameter automated luminaires 12 which typically each contain on-board a light source (not shown), light modulation devices, electric motors coupled to mechanical drives systems and control electronics (not shown).
  • a light source not shown
  • light modulation devices typically each contain on-board a light source (not shown), light modulation devices, electric motors coupled to mechanical drives systems and control electronics (not shown).
  • control electronics not shown
  • each luminaire is connected is series or in parallel to data link 14 to one or more control desks 15.
  • the luminaire system 10 is typically controlled by an operator through the control desk 15.
  • FIG. 2 illustrates an automated luminaire 12 incorporating the improved shutter system 25.
  • a lamp 21 contains a light source 22 which emits light which may have a power supply 27.
  • the light is reflected and controlled by reflector 20 through color system 23 which may include dichroic color mixing and color wheels, an aperture or imaging gate 24 and then through a framing shutter system 25.
  • the resultant light beam may be further constrained, shaped, colored and filtered by optical devices 26 which may include dichroic color filters, gobos, rotating gobos, variable aperture iris, effects glass and other optical devices well known in the art.
  • the final output beam may be transmitted through output lenses 28 and 31 which may form a zoom lens system.
  • Framing shutter system 25 is most commonly constructed as a plurality of metal plates or blades that may be individually and separately inserted across the light beam to mask a portion of that beam. Each blade may be completely removed from the light beam or may be adjusted to occlude a portion of the light beam. It is possible to use any number of blades; however it is common to utilize four allowing framing the projected image to common rectangular shapes such as picture frames. It is also well known to provide individual angular control for each blade such that the four blades do not have to remain at fixed, perpendicular, angle to each other and thus irregular trapezoidal or triangular shapes may be formed by combinations of the blades.
  • US Patent 1, 793,945 illustrates a four blade system where each blade may be manually adjusted to cover a portion of the light beam. This system does not provide beam rotation.
  • US Patent 4,890,208 to Izenour discloses a further four blade system where each blade is provided with two motors such that both the position and angle of each blade can be remotely adjusted.
  • US Patent Application 2005/02319578 to Wynne- Willson discloses a yet further system where each blade can be remotely adjusted for position and rotation and may also be rotated around the beam. Wynne-Willson further discloses that each blade may have two selectable edges which may be optionally inserted across the beam.
  • FIGURE 1 illustrates a typical automated lighting which may include
  • FIGURE 2 illustrates an automated luminaire with a framing shutter system
  • FIGURE 3 illustrates an automated luminaire containing an embodiment of the framing shutter system
  • FIGURE 4 illustrates the automated luminaire of Figure 3 with a cover removed revealing a portion and the location its framing shutter system
  • FIGURE 5 illustrates an exploded view of select parts of the automated
  • FIGURE 6 illustrates a front perspective view of the framing shutter system
  • FIGURE 7 illustrates the rear side of an embodiment of the framing shutter system of Figure 6;
  • FIGURE 8 illustrates the operation of one of the shutter blades of the framing shutter system of Figure 6;
  • FIGURE 9 further illustrates the operation the blade from Figure 8;
  • FIGURE 10 further illustrates the operation of the blade from Figure 8 and Figure 9;
  • FIGURE 11 illustrates the embodiment of the framing shutter system of Figure
  • FIGURE 12 illustrates an embodiment of the framing shutter system of Figure
  • FIGURE 13 illustrates an embodiment of the invention with a second shutter blade removed
  • FIGURE 14 illustrates an embodiment of the framing shutter system of Figure
  • FIGURE 15 illustrates an embodiment of the framing shutter system of Figure
  • FIGURE 16 illustrates an embodiment of the framing shutter system of Figure
  • FIGURE 17 illustrates an embodiment of the framing shutter system of Figure
  • FIGURES like numerals being used to refer to like and corresponding parts of the various drawings.
  • the present invention generally relates to an automated luminaire, specifically to the configuration of an improved automated framing shutter mechanism within such a luminaire which provides the user with more than two selectable edge shapes for each shutter blade.
  • FIG 3 illustrates an automated luminaire 16 containing an embodiment of the framing shutter system of the invention.
  • the luminaire 16 is illustrated with its top cover 17 which is removed in Figure revealing the luminaire's internal mechanisms, including the framing shutter mechanism 18.
  • Figure 5 illustrates the automated luminaire 16 with all covers removed to more fully reveal the internal mechanisms, including the framing shutter mechanism 18.
  • the framing shutter system 18 may be positioned at a point in the optical train such that the output optics 19 is capable of providing a hard edge focus of the shutter blades and/or the aperture separations plates (as discussed below) in the output beam.
  • the framing shutter mechanism may be adjacent to other optical devices such as gobo wheel 17.
  • FIG. 6 illustrates an embodiment of the invention. Framing shutter mechanism 18 has been removed from the automated luminaire so as to simplify the description of the invention.
  • Central aperture 38 provides the main light path for the optical system of the luminaire for a constrained light beam.
  • the aperture 38 and framing shutter system 18 are positioned at a point in the optical train such that the output optics may provide a hard edge focus of the shutter blades in the output beam.
  • the aperture 38 is defined by the central aperture 53 in one of the bracketed separator plates 52 (the second separator plate as further discussed below).
  • the central aperture in the third separator plate also defines the central aperture 38.
  • the first separator plate 42 has a central opening 43 that does not define the aperture of the light optical system. In other embodiments it may provide this function.
  • Blades 41, 51, 61 and 71 are framing shutter blades. With the mechanism in the state as illustrated in Figure 6 the shutter blades 41, 51, 61 and 71 are outside of the central aperture 38 causing no occlusion of the light beam allowing the light beam to pass through the framing shutter system 18 unchanged.
  • Each of the blades 41, 51, 61 and 71 may be separately and independently moved towards or away the central aperture 38.
  • the operation of all four blades is substantially similar and for the sake of clarity, just the operation of shutter blade 41 will be herein described. It is to be understood that shutter blades 51, 61 and 71 operate in a similar manner through their respective motors and drive systems.
  • Shutter blade 41 is connected by a first two bar linkage 40c and 40d to the shaft 40b of motor 40a.
  • Shutter blade 41 is further connected by a second two bar linkage 40g and 40h to the shaft 40f of motor 40e.
  • Shutter blade 41 is constrained by pin 40i which runs in a slot 42a in first and second separator plates 42 and 52 (slot in the second separator plate is not shown in Figure 6).
  • Pin 40i constrains the central point of shutter blade 41 to move in a direction radial to aperture 38, shutter blade 41 may further rotate about pin 40i to provide rotation of the shutter blade and thus the projected blade image.
  • the entire mechanism 40c, 40d, 41, 40h and 40g provides a five bar linkage.
  • Coordinated rotation of motors 40c and 40e allows both linear movement of shutter blade 41 along a direction radial to aperture 38, and altering the tilt angle of shutter blade 41 relative to the slot 42a in first separator plate 42.
  • Shutter blades 51, 61 and 71 may be similarly moved and tilted by their respective motors and linkage systems.
  • Figure 7 illustrates a rear view of the embodiment of the framing shutter system 18 illustrated in Figure 6.
  • Motors 50a and 50e which drive shutter blade 51, and motors 70a and 70e which drive shutter blade 71 may be seen.
  • An automated iris 41 mechanism may further be mounted on the framing shutter mechanism 18.
  • Iris 41 is mounted adjacent to the framing shutters (not easily identified in Figure 7), surrounding aperture 38. Operation of motor 39 will open and close iris 41 across aperture 38. It is advantageous to position iris 41 adjacent to the framing shutters so that the optical system may easily focus on one or both mechanisms.
  • Motor 37 may also be fitted to provide rotation for the entire framing shutter system as later described.
  • Figure 7 also illustrates electronic circuitry / motor drivers associated with driving and controlling the movement of motors (including 50a, 50e, 70a, 70e, and 39).
  • FIG 8 illustrates the framing shutter system shown in Figure 6 with shutter blade 41 inserted partway across aperture 38.
  • Motor 40a has rotated its output shaft 40b counter clockwise such that linkages 40c and 40d move the left side of blade 41 down.
  • motor 40e has rotated its output shaft 40f clockwise such that linkages 40g and 40h move the right side of blade 41 down.
  • Pin 40i also moves down in the slot 42a in first separator plate 42.
  • Shutter blade 41 now covers a proportion of aperture 38.
  • the counter clockwise rotation of motor 40a and the clockwise rotation of motor 40e are equal such that shutter blade 41 remains parallel to its original position, with no rotation around pin 40i.
  • shutter blade 41 may occlude more than half, approximately 60%, of aperture 38.
  • the blades may each occlude greater than 50% of the aperture, it can be seen that by bringing in two opposing blades (41 and 61, or 51 and 71) the user may completely occlude the aperture and block all light. With all four blades operating across the aperture the system may behave like a square iris moving from a fully open aperture through to a fully occluded aperture.
  • FIG 9 illustrates the framing shutter system shown in Figure 6 with shutter blade 41 inserted partway across aperture 38.
  • Motor 40a has rotated its output shaft 40b clockwise such that linkages 40c and 40d move the left side of blade 41 up.
  • motor 40e has rotated its output shaft 40f clockwise such that linkages 40g and 40h move the right side of blade 41 down.
  • Shutter blade 41 now covers a proportion of aperture 38.
  • the relative rotations of motor 40a and motor 40e cause shutter blade 41 to rotate clockwise around pin 40i such that shutter blade 41 is positioned at an angle across aperture 38.
  • FIG 10 illustrates the framing shutter system shown in Figure 6 with shutter blade 41 inserted across aperture 38.
  • Motor 40a has rotated its output shaft 40b counter clockwise such that linkages 40c and 40d move the left side of blade 41 down.
  • motor 40e has rotated its output shaft 40f counter clockwise such that linkages 40g and 40h move the right side of blade 41 up.
  • Shutter blade 41 now covers a proportion of aperture 38.
  • the relative rotations of motor 40a and motor 40e cause shutter blade 41 to rotate counter clockwise around pin 40i such that shutter blade 41 is positioned at an angle across aperture 38.
  • the shutter blade position shown in Figure 10 is tilted in the opposite direction to the position shown in Figure 9.
  • shutter blade 41 may be adjustably moved across aperture 38 and the angle that it crosses aperture 38 may be simultaneously and separately controlled.
  • the user may position shutter blade 41 at any desired position and at any desired angle across aperture 38.
  • the pivot point connections s 40j, 40k, 40m and 40n between linkages 40c and 40d, between linkages 40g and 40h, and from said linkages to shutter plate 41 may be of tight tolerance such that mechanical hysteresis or backlash is minimized. Such a system may be accurately positioned. Further, because of the small angle of rotation required for motors 40a and 40e to move from one extreme position to the other, and the mechanical advantage of the two bar linkage system, said movement may be very rapid. In one embodiment the mechanism is capable of moving the shutter blade from a first position out of the beam to a second position across the beam within 0.15 second. This compares with prior art systems which typically take 0.3 seconds or longer to achieve the same result. This high speed and accurate operation allows use of the framing system as a theatrical effect as well as providing accurate optical beam framing.
  • Figures 11, 12 13, 14 and 15 illustrate the disassembly of an embodiment of the invention in order to more easily describe the stacking of shutter blades and separator plates in the central mechanism.
  • Figure 11 illustrates the framing system shown in
  • FIG 12 illustrates the framing system shown in Figure 11, but with the first shutter blade 61 and second separator plate 52 removed.
  • Second shutter blade 41, third shutter blade 71 and third separator plate 54 both run in the gap between second separator plate 52 and third separator plate 54. Because the movements of second shutter blade 41 and third shutter blade 71 are essentially orthogonal to each other, they may run in the same slot and in contact with each other without interfering with each other's movement.
  • This has the further advantage that second shutter blade 41 and third shutter blade 71 are as close to each other as possible along the optical axis of the luminaire and thus will effectively be in sharp focus in the optical system at the same time.
  • pivot point connections 40m and 40n for shutter blade 41 are configured so that they protrude on top of the blade 41 and flush on the other side (not shown) while the pivot point connections 70m and 70n for shutter blade 71 are configured so they protrude below the blade (not shown) rather than on top. In this way the pivot point connections do not interfere with the movement of shutter blades 41 and 71 relative to each other.
  • the configuration of these blades is such that they always overlap. There is no combination of positions of these blades that they do not overlap and thus loose their orientation in the stack.
  • Figure 13 illustrates the framing system shown in Figure 12, but with second shutter blade 41 removed.
  • Figure 14 illustrates the framing system shown in Figure 13, but with third shutter blade 71 and third separator plate 54 removed. We can now see fourth shutter blade 51 and fourth separator plate 56. Fourth shutter blade 51 runs in the gap between third separator plate 54 and fourth separator plate 56.
  • each of the four shutter blades has an associated separator plate such that the pin on each blade runs in the slot of its associated separator plate.
  • these pins provide both location for the shutter blades and a pivot point for the shutter blade to rotate around.
  • the pin 40i on second shutter blade 41 may extend through the slots 52a and 42a in both second separator plate 52 and first separator plate 42.
  • the pin 70i on the third shutter blade 71 may extend through the slots 54a and 56a in both the third separator plate 54 and fourth separator plate 56.
  • first and second shutter blades face in a first direction while those on the third and fourth shutter blades face in a second direction, opposite to the first direction. Additionally, in the embodiment shown the first and second shutter blades are generally enter the light beam from opposite sides and the third and fourth shutter blades generally enter the light beam from opposite sides.
  • a separation plate between the second and third shutter blades.
  • the order of the stack may be different provided that the pin that constrains the movement of its shutter blade does not interfere with the movement of another shutter blade.
  • the spacer plates may each have multiple slots to accommodate the movements of extended pins for shutter blades to which they are not immediately adjacent.
  • both the separation plates 52 and/or 54 also serve as apertures for the optical system.
  • Figure 15 shows an illustration of an embodiment of the invention with all shutter blades and separator plates removed. This reveals the eight motor shafts, two for each shutter blade. In one embodiment, the entire shutter mechanism comprising the four shutter blades, four separator plates and all associated motors and linkages may further be rotated around the optical axis of the luminaire as one piece. Figures 16 and 17 may be compared with Figure 6 to illustrate how this rotation is achieved.
  • the shutter mechanism comprising the four shutter blades, four separator plates, rotation motor 37 and all associated shutter blade motors and linkages is mounted on plate 33 which is free to rotate around the optical axis of the luminaire within roller bearings 35a, 35b, 35c and 35d.
  • System rotation motor output shaft 32 is fitted with gear wheel pinion 34.
  • Gear wheel pinion 34 engages with geared track 36 which is fixed to the static portion of the framing shutter module. As motor 37 and thus motor shaft 32 rotates, gear wheel pinion 34 will move along fixed geared track 36 thus rotating plate 33 and the attached framing shutter mechanism.
  • Figure 16 shows the system where gear wheel pinion 34 has rotated such that it has moved from the bottom end of track 36 to the center of track 36
  • Figure 17 shows the system where gear wheel pinion 34 has rotated such that it has moved to the top of track 36.
  • the framing shutter system may be rotated and positioned at any angle between the extremes of track 36. In one embodiment the total possible angular excursion may be greater than 90°, approximately 120°.
  • a gear system is illustrated for the rotation of plate 33 the invention is not so limited and any system for rotating plate 33 may be utilized.
  • the plate rotation may be effected through direct drive, belt drives, friction drives, or other mechanisms well known in the art.
  • all motors are stepper motors. In other embodiments other motor types may be employed.
  • the operator may adjust the optical systems to provide a hard or soft focus on shutter blade edges and thus produce hard or soft edges to the light beam.
  • any kind of light source as known in the art may be used including, but not limited to, incandescent, high intensity discharge, LED, OLED, and Plasma.
  • the embodiment described utilizes the same diameter of apertures on the second and third separator plates 52 and 54, such that, when using the horizontal shutter blades 41 and 61, the beam can be focused on the aperture of the second separator plate 52 between those two blades, and when using the vertical shutter blades 51 and 71, the light can be focused on the aperture of the third separator plate 54 between those two blades with no change in aperture size.
  • the apertures in the first and fourth separator plates 42 and 56 may be larger diameter than those in the second and third separator plates 52 and 54.
  • a thin framing shutter mechanism has the advantage that all four shutter blades are close to the same optical plane, and thus may be in the focal plane of the projection optics. This allows all four blades to be in sharp focus, or all four blades to be in soft focus, simultaneously.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Shutters For Cameras (AREA)

Abstract

L'invention concerne un luminaire automatisé (12) amélioré et des systèmes de luminaires (10) utilisant un mécanisme d'obturateur de cadrage automatisé (18) amélioré pour un luminaire automatisé, permettant d'obtenir un fonctionnement rapide et précis par l'intermédiaire d'un élément de liaison à cinq barres, entraîné par deux moteurs pour chaque lame d'obturateur soumise à une contrainte par des plaques d'espacement et présentant une ouverture circulaire intégrée entre au moins deux des lames d'obturateur.
EP13818859.4A 2013-10-17 2013-10-17 Système d'obturateur de cadrage amélioré pour luminaire Active EP3058270B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2013/065547 WO2015057235A1 (fr) 2013-10-17 2013-10-17 Système d'obturateur de cadrage amélioré pour luminaire

Publications (2)

Publication Number Publication Date
EP3058270A1 true EP3058270A1 (fr) 2016-08-24
EP3058270B1 EP3058270B1 (fr) 2018-12-12

Family

ID=49943495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13818859.4A Active EP3058270B1 (fr) 2013-10-17 2013-10-17 Système d'obturateur de cadrage amélioré pour luminaire

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Country Link
EP (1) EP3058270B1 (fr)
CN (1) CN104854400B (fr)
WO (1) WO2015057235A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853684A (zh) * 2020-07-31 2020-10-30 广州市浩洋电子股份有限公司 一种可精准定位的光束切割装置及具有其的舞台灯

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US1793945A (en) 1929-04-23 1931-02-24 Mauthe Jacob Pencil finger support
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US4890208A (en) 1986-09-19 1989-12-26 Lehigh University Stage lighting apparatus
GB2270969A (en) 1992-09-29 1994-03-30 Strand Lighting Ltd Luminaire closure assembly
GB2298256B (en) 1995-02-23 1998-03-18 British Gas Plc Joining lined pipe items
WO1996036834A1 (fr) * 1995-05-18 1996-11-21 Martin Professional A/S Appareil d'eclairage destine notamment a l'usage sur scene
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Also Published As

Publication number Publication date
CN104854400B (zh) 2018-11-13
WO2015057235A1 (fr) 2015-04-23
EP3058270B1 (fr) 2018-12-12
CN104854400A (zh) 2015-08-19

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