GB2106233A - Light-beam emitting device - Google Patents

Light-beam emitting device Download PDF

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Publication number
GB2106233A
GB2106233A GB08222232A GB8222232A GB2106233A GB 2106233 A GB2106233 A GB 2106233A GB 08222232 A GB08222232 A GB 08222232A GB 8222232 A GB8222232 A GB 8222232A GB 2106233 A GB2106233 A GB 2106233A
Authority
GB
United Kingdom
Prior art keywords
source
radiation
drive means
light
mirror
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
GB08222232A
Other versions
GB2106233B (en
Inventor
Willson Peter David Wynne
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.)
LADLEBOND Ltd
Original Assignee
LADLEBOND Ltd
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 LADLEBOND Ltd filed Critical LADLEBOND Ltd
Priority to GB08222232A priority Critical patent/GB2106233B/en
Publication of GB2106233A publication Critical patent/GB2106233A/en
Application granted granted Critical
Publication of GB2106233B publication Critical patent/GB2106233B/en
Expired 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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21S10/06—Lighting devices or systems producing a varying lighting effect flashing, e.g. with rotating reflector or light source
    • 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

Landscapes

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

Abstract

A light-beam emitting device for mounting on a spot-light comprises a cage 4, 5, 6 including a plate 4 insertable into a colour filter slot of the spot-light. In the cage is a support arm 15 turnable about a panning axis by a pan motor 10 and a rod 20 lying on the panning axis and displaceable longitudinally of itself through the arm 15 by a tilt motor 11. The motors 10 and 11 are reversible and are controlled manually and/or automatically, possibly by remote control. <IMAGE>

Description

SPECIFICATION A radiation-beam emitting device According to one aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflection properties for reflecting, in the form of a beam, radiaiton from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce reversal of the sense of displacement of said surface relative to said source.
According to another aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflective properties for reflecting, in the form of a beam, radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce panning of said surface relative to said source and tilting of said surface relative to said source.
According to a further aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflective properties for reflecting, in the form of a beam, radiation from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to adjust the speed of displacemnet of said surface relative to said source.
The device is particularly suitable for use in a theatre or a discotheque, where the device could provide a moving spot. In that case, the device can either be mounted on an existing spot-light, or with its light source it can constitute a new spotlight. The reflective surface is advantageously constituted by a mirror which is turnably mounted to pan relative to a stationary electric bulb or tube constituting the light source, or is turnabíy mounted to tilt relative to the source, or is turnably mounted about axes perpendicular to each other so as to be able both to pan and to tilt relative to the source. In the case where the mirror can pan only or can tilt only, the drive means advantageously includes a single electric motor.In the case where the mirror is to do both, the drive means advantageously includes two electric motors controllable independently or each other.
The or each electric motor can be either reversible or connected to the mirror via a reversing gear.
The mirror can be automatically controlled, so as automatically to carry out a predetermined sequence of displacements. If desired, it can be controlled in accordance with a computer programme. Alternatively, or additionally, it can be manually remote-controlled by way of manually operable switching providing start, stop, forward, reverse and speed functions. Remote control could comprise a manually-controlled transmitter/receiver system of, for example, an ultrasonic, radio, microwave, audio, or infra-red type. In another arrangement, the spot can be caused to follow the movement of an artiste by, for example, having the artiste wear a radio or other transmitter and having mounted on the light-beam emitting device a homing receiver which controls the mirror drive.In a further arrangement, the device can be controlled by a characteristic of ambient sound, for example the amplitude of the sound.
In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way of example, to the accompanying drawings, which shows a diagrammatic underneath perspective view of a light-beam emitting device for mounting on a spot-light.
Referring to the drawing, the spot-light (not shown) is of a conventional form, consisting of a casing containing a light source in the form of an electric bulb or tube and formed at its front with vertical siots which are open at the top and closed at the bottom and serve to receive removably conventional colour filters. In the frontmost slot can be removably inserted a light-beam emitting device 3. The device 3 comprises a vertical support plate 4 which is removably inserted into the frontmost slot and to which is fixed, by way of a wire mesh cylinder 5, an opposite end cover 6, all with a light-absorptive finish. The plate 4 is formed with a flanged through hole 7 for receiving light from the light source and a carrying hand hole 8.Fixed centrally to the cover 6 is a bracket 9 in which is mounted a reversible electric motor 10 and on the outside of which is mounted a reversible electric motor 1 The motor 10 has a pinion 1 2 fixed to its output shaft and meshing with a gearwheel 13 rotatably mounted in a bearing 14 on the bracket 9. Fixed to the gearwheel is an arm 15 pivotally connected to one end of the rear surface of an oval mirror 16 in the cylinder 5. Thus, operation of the motor 10 causes the mirror 16 to pan.The motor 11 has a disc 1 7 fixed to its output shaft and provided with an eccentric pin 18 slidable in a crosshead 1 9. The latter is fixed to one end of a rod 20 slidably guided in the bearing 14 and so mounted at its other end in a crosshead 21 that the crosshead 21 can turn relative to the rod 20 about the axis of the rod. By means of pins 22 of the crosshead 21 slidably engaging in slots 23 in mounting strips 24 carrying the mirror 16, the mirror can move relative to the crosshead 21. Thus, operation of the motor 11 causes tilting of the mirror. In an alternative design, the plate 4 can be replaced by a circular plate, so as to allow adjustment of the anguiar orientation of the device 3 in the frontmost slot of the spot-light.
If desired, a switching arrangernentcan be provided to enable the mirror to be panned and/or tilted between two preset positions so that the mirror oscillates automatically through a desired angle.
1. A radiation-beam emitting device, comprising a surface having good radiation
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (24)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A radiation-beam emitting device According to one aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflection properties for reflecting, in the form of a beam, radiaiton from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce reversal of the sense of displacement of said surface relative to said source. According to another aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflective properties for reflecting, in the form of a beam, radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce panning of said surface relative to said source and tilting of said surface relative to said source. According to a further aspect of the present invention, there is provided a radiation-beam emitting device, comprising a surface having good radiation-reflective properties for reflecting, in the form of a beam, radiation from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to adjust the speed of displacemnet of said surface relative to said source. The device is particularly suitable for use in a theatre or a discotheque, where the device could provide a moving spot. In that case, the device can either be mounted on an existing spot-light, or with its light source it can constitute a new spotlight. The reflective surface is advantageously constituted by a mirror which is turnably mounted to pan relative to a stationary electric bulb or tube constituting the light source, or is turnabíy mounted to tilt relative to the source, or is turnably mounted about axes perpendicular to each other so as to be able both to pan and to tilt relative to the source. In the case where the mirror can pan only or can tilt only, the drive means advantageously includes a single electric motor.In the case where the mirror is to do both, the drive means advantageously includes two electric motors controllable independently or each other. The or each electric motor can be either reversible or connected to the mirror via a reversing gear. The mirror can be automatically controlled, so as automatically to carry out a predetermined sequence of displacements. If desired, it can be controlled in accordance with a computer programme. Alternatively, or additionally, it can be manually remote-controlled by way of manually operable switching providing start, stop, forward, reverse and speed functions. Remote control could comprise a manually-controlled transmitter/receiver system of, for example, an ultrasonic, radio, microwave, audio, or infra-red type. In another arrangement, the spot can be caused to follow the movement of an artiste by, for example, having the artiste wear a radio or other transmitter and having mounted on the light-beam emitting device a homing receiver which controls the mirror drive.In a further arrangement, the device can be controlled by a characteristic of ambient sound, for example the amplitude of the sound. In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way of example, to the accompanying drawings, which shows a diagrammatic underneath perspective view of a light-beam emitting device for mounting on a spot-light. Referring to the drawing, the spot-light (not shown) is of a conventional form, consisting of a casing containing a light source in the form of an electric bulb or tube and formed at its front with vertical siots which are open at the top and closed at the bottom and serve to receive removably conventional colour filters. In the frontmost slot can be removably inserted a light-beam emitting device 3. The device 3 comprises a vertical support plate 4 which is removably inserted into the frontmost slot and to which is fixed, by way of a wire mesh cylinder 5, an opposite end cover 6, all with a light-absorptive finish. The plate 4 is formed with a flanged through hole 7 for receiving light from the light source and a carrying hand hole 8.Fixed centrally to the cover 6 is a bracket 9 in which is mounted a reversible electric motor 10 and on the outside of which is mounted a reversible electric motor 1 The motor 10 has a pinion 1 2 fixed to its output shaft and meshing with a gearwheel 13 rotatably mounted in a bearing 14 on the bracket 9. Fixed to the gearwheel is an arm 15 pivotally connected to one end of the rear surface of an oval mirror 16 in the cylinder 5. Thus, operation of the motor 10 causes the mirror 16 to pan.The motor 11 has a disc 1 7 fixed to its output shaft and provided with an eccentric pin 18 slidable in a crosshead 1 9. The latter is fixed to one end of a rod 20 slidably guided in the bearing 14 and so mounted at its other end in a crosshead 21 that the crosshead 21 can turn relative to the rod 20 about the axis of the rod. By means of pins 22 of the crosshead 21 slidably engaging in slots 23 in mounting strips 24 carrying the mirror 16, the mirror can move relative to the crosshead 21. Thus, operation of the motor 11 causes tilting of the mirror. In an alternative design, the plate 4 can be replaced by a circular plate, so as to allow adjustment of the anguiar orientation of the device 3 in the frontmost slot of the spot-light. If desired, a switching arrangernentcan be provided to enable the mirror to be panned and/or tilted between two preset positions so that the mirror oscillates automatically through a desired angle. CLAIMS
1. A radiation-beam emitting device, comprising a surface having good radiation reflective properties for reflecting, in the form of a beam, radiation from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce reversal of the sense of displacement of said surface relative to said source.
2. A radiation-beam emitting device, comprising a surface having good radiationreflective properties for reflecting, in the form of a beam, radiation from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to produce panning of said surface relative to said source and tilting of said surface relative to said source.
3. A radiation-beam emitting device, comprising a surface having good radiationreflective properties for reflecting, in the form of a beam, radiation from a radiation source, drive means for displacing said surface relative to said source, and control means arranged to control said drive means to adjust the speed of displacement of said surface relative to said source.
4. A device as claimed in any preceding claim, and arrnaged to provide a moving spot.
5. A device as claimed in claim 4, and arranged to be fitted to a spot-light.
6. A device as claimed in claim 5, and formed with a flange arranged to be removably mounted in a colour filter slot of said spot-light.
7. A device as claimed in claim 6, wherein said flange is of circular outline.
8. A device as claimed in claim 4 and, with said radiation source, constituting a spot-light.
9. A device as claimed in claim 1 or 3, or any one of claims 4 to 8 as appended in claim 1 or 3, wherein said drive means can pan said surface relative to said source.
10. A device as claimed in claim 1, 3 or 9, or any one of claims 4 to 8 as appended to claim 1 or 3, wherein said drive means can tilt said surface relative to said source.
1 A device as claimed in claims 9 and 10, wherein said drive means can pan and tilt, independently, said surface relative to said source.
12. A device as claimed in claim 1 , or any one of claims 4 to 11 as appended to claim 1, wherein said drive means comprises a reversible electric motor means reversible by said control means.
13. A device as claimed in claim 1 , or any one of claims 4 to 11 as appended to claim 1, wherein said drive means comprises electric motor means and reversing gear means by way of which said electric motor means is connected to said surface, said gear means being reversible by said control means.
14. A device as claimed in any preceding claim, wherein said control means is arranged to cause said surface automatically to perform a predetermined sequence of displacements.
15. A device as claimed in claim 14, wherein said control means comprises computer programme means.
16. A device as claimed in any one of claims 1 to 13, wherein said control means is manually operable.
17. A device as claimed in claim 14, 15 or 16, wherein said control means comprises remote control means.
18. A device as claimed in claim 17, wherein said control means comprises a signal receiver arranged to receive audio, infra-red, microwave, radio or ultrasonic control signals.
19. A device as claimed in claim 18, wherein said receiver is a homing receiver.
20. A device as claimed in claim 2 or 1 or claim 10 as appended to claim 9, and further comprising a support turnable about an axis of panning, said surface being so mounted on said support as to be turnable relative thereto about an axis of tilting, and said drive means comprising a pan motor arranged to turn said support about said axis of panning and a tilt motor arranged to turn said surface relative to said support about an axis of tilting.
21. A device as claimed in claim 20, wherein said tilt motor drives said surface by way of an elongate member extending through said support along said axis of panning and arranged to be driven longitudinally of itself by said tilt motor.
22. A device as claimed in claim 6 or 7, or any one of claims 9 to 21 as appended to claim 6, wherein said surface and said drive means are contained in a housing comprising a cylindrical cage provided at one end with said flange.
23. A device as claimed in claim 22, wherein said cage is closed at its other end by a substantially light-proof member.
24. A radiation-beam emitting device substantially as hereinbefore described with reference to the accompanying drawing.
GB08222232A 1981-07-31 1982-08-02 Light-beam emitting device Expired GB2106233B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08222232A GB2106233B (en) 1981-07-31 1982-08-02 Light-beam emitting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8123515 1981-07-31
GB08222232A GB2106233B (en) 1981-07-31 1982-08-02 Light-beam emitting device

Publications (2)

Publication Number Publication Date
GB2106233A true GB2106233A (en) 1983-04-07
GB2106233B GB2106233B (en) 1985-01-30

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GB08222232A Expired GB2106233B (en) 1981-07-31 1982-08-02 Light-beam emitting device

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004702A1 (en) * 1984-04-06 1985-10-24 Economair Pancan Limited A light beam emitting device
DE3600209A1 (en) * 1986-01-07 1987-07-09 Michael Gruenecker Device for illuminating exhibits (showpieces)
EP0643257A1 (en) * 1993-08-27 1995-03-15 Vari-Lite, Inc. Variable light modifier and lighting instrument employing same
GB2284045A (en) * 1993-11-17 1995-05-24 Obie S Lighting Prod Inc Theatrical search lighting system
GB2310035A (en) * 1996-02-06 1997-08-13 Stephen Ernest Watts Special effect lighting
GB2356449A (en) * 1999-11-15 2001-05-23 Chang Ming Cheng Barrel-shaped, motor-driven reflective mechanism for a stage lamp
GB2407174A (en) * 2003-10-18 2005-04-20 James Richard Harries Rainbow projector
WO2012127253A1 (en) * 2011-03-18 2012-09-27 Zivko Igor Multimedia portable device - party player for storage and playback of audio and visual content with a rotating disco-ball
EP3081859A1 (en) * 2015-04-15 2016-10-19 CLAY PAKY S.p.A. Scenographic light fixture
US11181252B2 (en) 2018-10-09 2021-11-23 Michael Callahan Apparatus for steering a light beam using two mirrors having only one mirror moved

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004702A1 (en) * 1984-04-06 1985-10-24 Economair Pancan Limited A light beam emitting device
DE3600209A1 (en) * 1986-01-07 1987-07-09 Michael Gruenecker Device for illuminating exhibits (showpieces)
EP0643257A1 (en) * 1993-08-27 1995-03-15 Vari-Lite, Inc. Variable light modifier and lighting instrument employing same
AU689784B2 (en) * 1993-08-27 1998-04-09 Vari-Lite, Inc. Variable light modifier and lighting instrument employing same
GB2284045A (en) * 1993-11-17 1995-05-24 Obie S Lighting Prod Inc Theatrical search lighting system
GB2310035A (en) * 1996-02-06 1997-08-13 Stephen Ernest Watts Special effect lighting
GB2356449A (en) * 1999-11-15 2001-05-23 Chang Ming Cheng Barrel-shaped, motor-driven reflective mechanism for a stage lamp
GB2356449B (en) * 1999-11-15 2003-07-16 Ming-Cheng Chang Reflective mechanism for a computer-controlled stage lamp
GB2407174A (en) * 2003-10-18 2005-04-20 James Richard Harries Rainbow projector
WO2012127253A1 (en) * 2011-03-18 2012-09-27 Zivko Igor Multimedia portable device - party player for storage and playback of audio and visual content with a rotating disco-ball
EP3081859A1 (en) * 2015-04-15 2016-10-19 CLAY PAKY S.p.A. Scenographic light fixture
US10006622B2 (en) 2015-04-15 2018-06-26 Clay Paky S.P.A. Scenographic light fixture
US11181252B2 (en) 2018-10-09 2021-11-23 Michael Callahan Apparatus for steering a light beam using two mirrors having only one mirror moved
US11761610B2 (en) 2018-10-09 2023-09-19 Michael Callahan Twist-lock plug improved to positively lock with prior art receptacles

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Publication number Publication date
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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee