WO2002101283A2 - Scheinwerfer für theater, fernsehstudios, veranstaltungsstätten od.dgl. - Google Patents
Scheinwerfer für theater, fernsehstudios, veranstaltungsstätten od.dgl. Download PDFInfo
- Publication number
- WO2002101283A2 WO2002101283A2 PCT/DE2002/002110 DE0202110W WO02101283A2 WO 2002101283 A2 WO2002101283 A2 WO 2002101283A2 DE 0202110 W DE0202110 W DE 0202110W WO 02101283 A2 WO02101283 A2 WO 02101283A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- headlight
- reflection coating
- infrared reflection
- optical device
- lenses
- Prior art date
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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
-
- 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 a headlamp for theaters, television studios, event venues or the like, with a lamp, by means of which light can be generated and emitted, an optical device to which several lenses belong, reflectors or reflector systems can belong, and by means of which the beam path of the light emitted by the illuminant can be influenced, a headlight housing in which the illuminant and the optical device are arranged and which has a light radiation exit surface, and a color filter device which is arranged in the light radiation exit surface of the headlight housing.
- the headlights reduce the positioning possibilities of the zoom lenses of this zoom lens in order to avoid impermissible temperature conditions in the area of the color filter device; alternatively, inadmissible temperature conditions are excluded by using additional heat shield foils.
- wire grids with light-weakening grating elements in the center of the beam path were used to reduce the temperature, although the temperature conditions could be kept within the permissible range by means of these wire grids, but considerable losses in terms of visible light radiation had to be accepted.
- the radiation generated by the illuminant or by the lamp is reflected by means of a cold light reflector, wherein the infrared components of the radiation which cause heat development are not reflected by the cold light reflector but rather by the cold light reflector into a heat-absorbing layer or a heat sink can be guided.
- a cold light reflector wherein the infrared components of the radiation which cause heat development are not reflected by the cold light reflector but rather by the cold light reflector into a heat-absorbing layer or a heat sink can be guided.
- a disadvantage here is that inadmissible temperature conditions can occur in the area of the headlight housing in which the illuminant or the lamp is arranged.
- the invention has for its object to develop a headlight of the type described in such a way that, on the one hand, the temperature load in the light radiation exit surface, in which the color filter device is usually arranged, is reduced, so that burning and even fading of the color pigments present in the color filter device are excluded can be, in addition, in the entire headlamp housing with optimal and effective operation of both the lamp or the lamp and the optics device only permissible temperature conditions should prevail.
- an infrared reflection coating is arranged in the beam path of light between the illuminant and the color filter device arranged in the light radiation exit surface of the headlight housing.
- a large part of the infrared radiation causing a temperature rise is filtered out of the beam path of the headlamp according to the invention before this infrared radiation can reach the insertion level of the color filter device.
- temperature loads can be controlled, which can be around 400 degrees Celsius.
- Suitable materials for such infrared reflection coatings are indium-based materials which have been known for a long time, titanium oxide, silicon oxide, tental oxide and others which in particular have a corresponding temperature resistance of the layer system.
- Such coatings are already known, for example, in connection with halogen incandescent lamps, such coatings increasing the efficiency of such halogen incandescent lamps by applying such coatings to suitable areas on the lamp bulb of the halogen incandescent lamps, as a result of which the heat generated by the infrared component of the radiation inside the halogen incandescent lamp is held.
- the arrangement according to the invention of an infrared reflection coating - seen in the direction of the beam path - upstream of the color filter device has proven to be special proven advantageous.
- the optical device of the headlight according to the invention can include a zoom lens, the lenses of which can be adjusted to one another as desired, without inadmissible temperature conditions occurring in the area of the color filter device.
- the surfaces of the lenses of the optical device can be provided with an antireflection broadband anti-reflective coating, and the resulting increase in the efficiency of the headlights or profile headlights does not result in inadmissible temperature conditions either in the headlight housing or in the area of the color filter device ,
- the combination of the infrared reflection coating according to the invention with an antireflection broadband anti-reflective coating for the visible part of the radiation from the illuminant or the lamp ensures that the Fresnel losses are reduced to a minimum residual reflection of the glass / air surface.
- the infrared reflection coating is arranged on one or more of the surfaces of the lenses of the optical device, so that the infrared reflection flexion coating no additional components or assemblies are necessary.
- the infrared reflection coating can advantageously be evaporated onto one or more surfaces of the lenses of the optical device.
- the infrared reflection coating is arranged on an intermediate lens of a double condenser of the optical device, this double condenser - seen in the direction of the beam path - being provided immediately downstream of the illuminant or the lamp, it is possible to use this intermediate lens as standard for a device series of the headlight with different zoom versions ; It is also advantageous in this embodiment that the entire operating parts, such as, for example, glass gobo, iris diaphragm, diaphragm slide and the like. be less exposed to heat.
- the infrared reflection coating is provided on the first zoom lens of the zoom lens of the optical device, the temperature gradient occurring there can be made more favorable for the desired effect, since the infrared portion of the light radiation emitted by the illuminant or the lamp already passes after passing through lenses arranged upstream is weakened.
- the infrared reflection coating on the front lens of the zoom lens of the optical device, as a result of which the entire empty zoom tube, which belongs to the headlight housing, can advantageously be used for heat dissipation.
- the infrared reflection coating should advantageously be arranged on that of the surfaces of the lenses at which the minimum divergence angle of the total beam is present, in order to avoid discoloration at an edge position of approximately 740 to 780 mm.
- the infrared reflection coating is arranged on a flat surface of the lenses, any manufacturing and discoloration problems can be avoided.
- the temperature conditions within the headlight housing can be designed and optimized as it were, so that depending on the thermal conductivity properties of certain housing sections, temperature conditions can be created within the headlight housing.
- 1 shows a schematic representation of a first embodiment of a profile headlight according to the invention
- 2 shows a basic illustration of a second embodiment of the profile headlight according to the invention
- 3 shows a basic illustration of a third embodiment of the profile headlight according to the invention
- 4 shows a basic illustration of a fourth embodiment of the profile headlight according to the invention.
- a first embodiment shown in FIG. 1 of a profile headlight 1 according to the invention has as the light radiation source a lamp or a lamp 2 with a winding or a filament 3, which is connected in a suitable manner to an electrical voltage source.
- a mirror system 4 is arranged around the lamp or lamp 2, which consists of two mirrors or reflectors 5, 6 and by means of which the light radiation emitted by the lamp or by lamp -2 is directed onto the input side of an optical device 7.
- the optical device 7 is designed as an optical system with a condenser lens 8 and a zoom lens 9.
- the condenser optics 8 is designed as a double condenser and has a first condenser lens 10 which is arranged centrally in a recess 11 of the mirror 6 of the mirror system 4 which is arranged on the side of the illuminant or the lamp 2 facing the optical device 7.
- the light radiation emitted by the illuminant or the lamp 2 enters the optics device 7 or its condenser optics 8 through the flat entry surface 12 of the first condenser lens 10.
- a second condenser lens 13 belongs to the condenser optics 8 designed as a double condenser.
- the second condenser lens 13 is at the same time part of the zoom lens 9 and, as its first zoom lens, is arranged displaceably or adjustably along an adjustment path 14.
- the zoom lens 9 includes a second zoom lens or front lens 15, which is likewise displaceable or adjustable along an adjustment path 16.
- an optical lens 7 also includes an intermediate lens 17, which is arranged in the beam path between the first condenser lens 10 on the one hand and the second condenser lens or the first zoom lens 13 on the other hand.
- Further operating elements 18 of the profile headlight (1) are arranged in the beam path between the intermediate lens 17 on the one hand and the second condenser lens or the first zoom lens 13 on the other hand, e.g. a glass gobo, an iris diaphragm, a 4-way diaphragm slide and the like.
- the illuminant or the lamp 2, the mirror system 4, the optical device 7 and the operating elements 18 are arranged within a headlight housing 19 of the profile headlight 1.
- the headlight housing 19 has a light radiation exit surface 20 in the radiation direction downstream of the second zoom or front lens 15. At this point the headlight housing 19 is provided with an insertion level 21 into which a color filter device 22 can be inserted.
- the color filter device 22 can be designed as a color film filter, it also being possible to design it as a scroller or roll color changer.
- a fan 24 is also provided in the housing section 23 of the headlight housing 19 assigned to the illuminant or the lamp 2 and the mirror system 4, by means of which air and with this air heat can be dissipated from the interior of the headlight housing 2.
- the optical device 7 of the profile headlight 1 consists of the first condenser lens 10, the second condenser or first zoom lens 13, the intermediate lens 17 and the second zoom or front lens 15.
- These lenses 10, 13, 17, 15 are each provided with an anti-reflective broadband anti-reflective coating, whereby the efficiency of the profile headlight according to the invention is drastically increased by the Fresnel 'see losses reduced to a minimum residual reflection on the glass / air surface.
- FIGURE 1 shows only the antireflection broadband anti-reflection 25 on the exit surface 26 of the intermediate lens 17.
- the convex entrance surface 27 of the intermediate lens 17 is provided with an infrared reflection coating 28.
- This infrared reflection coating 28 on the entry surface 27 of the intermediate lens 17 prevents noticeable portions of the infrared radiation emitted by the illuminant or by the lamp 2 from reaching the area of the headlight housing 19 downstream of the intermediate lens 17, as seen in the radiation direction.
- This arrangement of the infrared reflection coating 28 on the intermediate lens 17 has the consequence that this intermediate lens 17 can be used as standard for a device series of profile headlights 1 according to the invention with different versions of the zoom lens 9.
- the infrared reflection coating 28 is arranged on the entry surface 27 of the intermediate lens 17, all of the operating elements 18 are only slightly exposed to heat.
- the arrangement of the infrared reflection coating 28 and the anti-reflective broadband anti-reflective coating 25 on the intermediate lens 17 can also be interchanged if this is advantageous for the effectiveness of the heat reduction or for the avoidance of manufacturing and discoloration problems.
- the embodiment of the profile headlight 1 according to the invention shown in FIG. 2 differs from the embodiment described with reference to FIG. 1 in that an infrared reflection coating 29 is formed on the flat entry surface 30 of the second condenser or first zoom lens 13.
- the anti-reflective broadband anti-reflective coatings provided in the optical device 7 only the anti-reflective broadband anti-reflective coating 31 is on the convex in FIG Exit surface 32 of the second condenser or. first zoom lens 13 shown.
- the temperature gradient for the effect sought by the infrared reflection coating 29 can be made more favorable, since the infrared portion of the illuminant or. light radiation emitted by the lamp 2 is already weakened overall after it has passed through the first condenser lens 10 and the intermediate lens 17.
- infrared reflective coatings on several lenses of the optical device 7, in which case different degrees of efficiency of these infrared reflective coatings can be realized, so that the heat generated due to the infrared radiation or its reflection within the headlight housing 19 over the entire period Area of the interior of the headlight housing 19 can be obtained evenly or distributed.
- FIG. 3 shows a further embodiment of the profile headlight 1 according to the invention, in which an infrared reflection coating 33 is formed on the entry surface 34 of a hard glass pane 35.
- An anti-reflective broadband anti-reflective coating 37 is provided on the exit surface 36 of the hard glass pane 35.
- the hard glass pane 35 can be inserted into a slot for a soft focus, which is provided as standard in the headlight housing 19.
- 4 shows a mirror system and double condenserless embodiment of the profile headlight 1 according to the invention, in which a reflector 38 is provided in the housing section 23 of the headlight housing 19 around the lamp 2, which is arranged in the axial direction of the headlight housing 19.
- the reflector 38 can consist, for example, of several ellipsoid segmented curve sections.
- the reflector 38 can also be equipped in two or more parts in order to increase the convection cooling.
- the reflector 38 is provided with an infrared-transmissive reflection coating 39 on its inner surface facing the lamp 2.
- the infrared reflection coating 29 is provided in the zoom lens 9, and in the exemplary embodiment shown it is arranged on the first zoom lens 13.
- the infrared reflection coating 33 on the hard glass pane 35, as shown in FIG. 3, in which case the effect of heat reduction in the light radiation exit surface 20 or in the color filter device 22 is also or better achieved.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128176A DE10128176A1 (de) | 2001-06-11 | 2001-06-11 | Scheinwerfer für Theater, Fernsehstudios, Veranstaltungsstätten oder dgl. |
DE10128176.5 | 2001-06-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002101283A2 true WO2002101283A2 (de) | 2002-12-19 |
WO2002101283A3 WO2002101283A3 (de) | 2003-02-27 |
Family
ID=7687842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/002110 WO2002101283A2 (de) | 2001-06-11 | 2002-06-10 | Scheinwerfer für theater, fernsehstudios, veranstaltungsstätten od.dgl. |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10128176A1 (de) |
WO (1) | WO2002101283A2 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6013225A (ja) * | 1983-07-02 | 1985-01-23 | Asahi Chem Ind Co Ltd | 透光部材およびそれを用いた光線照射装置 |
US5402326A (en) * | 1993-11-12 | 1995-03-28 | High End Systems, Inc. | Gobo holder for a lighting system |
DE29804248U1 (de) * | 1998-03-10 | 1998-05-07 | Siemens AG, 80333 München | Scheinwerfer |
DE29804250U1 (de) * | 1998-03-10 | 1998-05-07 | Siemens AG, 80333 München | Scheinwerfer |
DE20016302U1 (de) * | 2000-09-15 | 2001-01-04 | Arnold & Richter Kg | Scheinwerfer |
-
2001
- 2001-06-11 DE DE10128176A patent/DE10128176A1/de not_active Withdrawn
-
2002
- 2002-06-10 WO PCT/DE2002/002110 patent/WO2002101283A2/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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None |
Also Published As
Publication number | Publication date |
---|---|
WO2002101283A3 (de) | 2003-02-27 |
DE10128176A1 (de) | 2002-12-19 |
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