CN1788179A - Illuminator and projector with same - Google Patents
Illuminator and projector with same Download PDFInfo
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- CN1788179A CN1788179A CNA2004800127401A CN200480012740A CN1788179A CN 1788179 A CN1788179 A CN 1788179A CN A2004800127401 A CNA2004800127401 A CN A2004800127401A CN 200480012740 A CN200480012740 A CN 200480012740A CN 1788179 A CN1788179 A CN 1788179A
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- speculum
- lighting device
- luminous tube
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/025—Associated optical elements
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- Endoscopes (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
Abstract
An illuminator comprises an arc tube (10) composed of a radiating section (11) in which light is radiated between a pair of electrodes (12) and sealed sections (13) disposed on both sides of the radiating section (11); a first reflecting mirror (20) holding the arc tube (10), reflecting light radiated from the arc tube (10), and directing the light forward; and a transparent plate (25) disposed at the front end of the first reflecting mirror (20). A second reflecting mirror (30) for reflecting the light from the radiating section (11) toward the first reflecting mirror (20) is fixed to at least one of the sealed sections (13) and the transparent plate (25) in such a way that the second reflecting mirror (30) encloses the front part of the radiating section (11). The transparent plate (25) is in contact with or secured to the second reflecting mirror (30), and at least one of the transparent plate (25) and the second reflecting mirror (30) is in contact with or secured to the sealed section (13).
Description
Technical field
The present invention relates to and has luminous tube and reflection from the lighting device of the speculum of the emergent light of this luminous tube with possess the projector of this lighting device.
Background technology
As lighting device, extensively adopt by luminous tube and make the light that sends from luminous tube the lighting device that speculum constituted towards predetermined direction.In such lighting device, though for effectively utilize from luminous tube send become for veiling glare can not be in the light that uses, as open (the 2nd page in flat 8-31382 communique the spy, the ground of publishing Fig. 1), implementation clamping luminous tube ground with the position of above-mentioned speculum subtend on possess the 2nd complementary speculum.
, with the 2nd complementary speculum, the illuminating part periphery that surrounds luminous tube is installed under the situation on the luminous tube like that, and the 2nd speculum plays a part to make the heat dissipation capacity of luminous tube to reduce.Therefore, have following problem: the temperature of luminous tube becomes to uneven Temperature Distribution temperature part and rises significantly, and it causes consumption, the gonorrhoea of luminous tube, the expansion of electrode, shortens the life-span of luminous tube.
Summary of the invention
The present invention makes in view of the above problems, purpose is to provide lighting device, it possesses has: luminous tube, as first speculum of the principal reflection mirror of the light that sends from luminous tube be configured in the light-passing board of the leading section of first speculum, wherein possess, even under the situation that the illuminating part periphery that surrounds luminous tube as the 2nd speculum of auxiliary mirror is provided with like that, also can prevent to result from the luminous tube of the reduction of life-span of the 2nd speculum and reliability.And also to possess the projector that this lighting device is arranged be purpose to provide.
Lighting device of the present invention, possess: luminous tube with sealing of the both sides of between pair of electrodes, carrying out luminous illuminating part and being positioned at this illuminating part, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that: make the front part of surrounding above-mentioned illuminating part and, be adhesively fixed at least at least one side of above-mentioned sealing and above-mentioned light-passing board to second speculum of the above-mentioned first speculum lateral reflection from the light of above-mentioned illuminating part; Above-mentioned light-passing board contacted with above-mentioned second speculum or be adhesively fixed, make above-mentioned light-passing board and above-mentioned second speculum at least one of them contact or the above-mentioned sealing that is adhesively fixed on.Thus, because make and become turning back on first speculum by second speculum and can be of veiling glare usually for utilizing from the major part of the light of luminous tube, and the heat that makes luminous tube is to light-passing board or carry out the heat conduction by above-mentioned second speculum to light-passing board and dispel the heat, so even because the setting of second speculum increases the temperature rising that heating also can prevent or reduce luminous tube.
And, other lighting device of the present invention, possess: luminous tube with sealing of the both sides of between pair of electrodes, carrying out luminous illuminating part and being positioned at this illuminating part, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that: make the front part of surrounding above-mentioned illuminating part and, be adhesively fixed on the above-mentioned light-passing board to second speculum of the above-mentioned first speculum lateral reflection from the light of above-mentioned illuminating part; At above-mentioned light-passing board and above-mentioned second speculum, and be provided with the gap between the above-mentioned luminous tube.Thus, because make and become turning back on first speculum by second speculum and can be of veiling glare usually for utilizing from the major part of the light of luminous tube, and by air cooling luminous tube by above-mentioned gap, even so owing to the setting of second speculum increases heating, the temperature that also can prevent or reduce luminous tube rises.
Also have, above-mentioned being adhesively fixed can be by being adhesively fixed that bonding agent carries out.
Thus, can become good being adhesively fixed and can firmly fixing second speculum of closely bonding property by bonding agent, and improve from the heat conducting thermal diffusivity of luminous tube to light-passing board.
And, other lighting device of the present invention, possess: luminous tube with sealing of the both sides of between pair of electrodes, carrying out luminous illuminating part and being positioned at this illuminating part, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum is characterized in that: surround the front part of above-mentioned illuminating part and one-body molded from the substrate and the above-mentioned light-passing board of second speculum of the light of above-mentioned illuminating part to the above-mentioned first speculum lateral reflection.
Thus, because the substrate and the light-passing board of second speculum are formed in one,, light-passing board can carry out the fixing of second speculum by being configured on first speculum, therefore with second speculum in the lump, the heat of second speculum is transmitted on the light-passing board and dispels the heat, so even rise owing to the setting of second speculum increases the temperature that heating also can prevent or reduce luminous tube.
And, other lighting device of the present invention, possess: luminous tube with sealing of the both sides of between pair of electrodes, carrying out luminous illuminating part and being positioned at this illuminating part, keep the light that above-mentioned luminous tube and reflection send from this illuminating part and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum is characterized in that: possess the front part of surrounding above-mentioned illuminating part and to second speculum of the above-mentioned first speculum lateral reflection from the light of above-mentioned illuminating part; Above-mentioned second speculum separates with gap the subtend configuration with the outer peripheral face of above-mentioned illuminating part, and by have the spring on the periphery that the gap is wound on above-mentioned sealing for this outer peripheral face, is fixed near the above-mentioned illuminating part and be pressed.Thus, because make and become turning back on first speculum by second speculum and can be of veiling glare usually for utilizing from the major part of the light of luminous tube, and by the cooling of the air by above-mentioned gap luminous tube, so even because the existence of second speculum increases the temperature rising that heating also can prevent or reduce luminous tube.
Also have, preferred: as to constitute above-mentioned spring by the electric conductivity coil, and an end of this electric conductivity coil is connected on the lead-in wire that stretches out from the sealing with the above-mentioned spring side opposition side of configuration.Thus, can make the usefulness of spring, improve the lighting a lamp property of luminous tube for the insulation breakdown of the inside of the luminous tube in luminous when beginning of luminous tube.
And preferred: above-mentioned light-passing board is adhesively fixed with bonding agent on the above-mentioned sealing.According to this, conduct the heat radiation that causes because also increased to the heat of light-passing board from luminous tube, rise so can prevent the temperature of luminous tube effectively.
Also have, preferred: above-mentioned light-passing board is by the low material of the coefficient of thermal expansion with light transmission or have any in the high material of the pyroconductivity of light transmission and constitute.And preferred: the substrate of above-mentioned second speculum is made of any in the high material of the low material of coefficient of thermal expansion or pyroconductivity.Because light-passing board is or/and second speculum, material low by coefficient of thermal expansion or that heat conductivity is good constitutes, so light-passing board as the leading section that is configured in first speculum, or can prevent because of distortion that heat causes, rotten etc., very preferably in the substrate of second speculum of first speculum as subtend.
Preferably: above-mentioned light-passing board and above-mentioned sealing, above-mentioned second speculum and above-mentioned sealing, being adhesively fixed of perhaps above-mentioned light-passing board and above-mentioned second speculum mixed the class bonding agent by aluminium nitride class or silica and aluminium oxide and carried out.These are because be the mineral-type bonding agent, so hear resistance, light resistance are good; And because aluminium nitride class heat conductivity is good, so can promote from the heat radiation of luminous tube to light-passing board.
And, preferred: as on the peripheral part of above-mentioned light-passing board, fin to be set.Increase the area of dissipation of light-passing board thus and can promote the heat radiation of luminous tube.
And preferred: an end of above-mentioned sealing is side-prominent to open area from running through above-mentioned light-passing board by above-mentioned first speculum and above-mentioned light-passing board institute area surrounded.So, because of an end of sealing is in the open sides space, separated the space as the illuminating part of thermal source and outstanding sealing by above-mentioned light-passing board, and make an end of sealing not be subjected to influence, improve its cooling performance as the high temperature air of the illuminating part periphery of thermal source.
Projector of the present invention, possess: lighting device, with the light of incident from this lighting device, modulate the optic modulating device of this incident light according to the image information that is provided, it is characterized in that: possessing as above-mentioned lighting device has the above-mentioned lighting device of being put down in writing in any.Thus, obtain the projector of high-light long-life.
Description of drawings
Fig. 1 is the pie graph of the lighting device among the embodiment 1 of embodiments of the present invention 1.
Fig. 2 is the Action Specification figure of the lighting device of Fig. 1.
Fig. 3 is the pie graph of the lighting device among the embodiment 2 of embodiments of the present invention 1.
Fig. 4 is the pie graph of the lighting device among the embodiment 3 of embodiments of the present invention 1.
Fig. 5 is the pie graph of the lighting device among the embodiment 4 of embodiments of the present invention 1.
Fig. 6 is the pie graph of the lighting device among the embodiment 1 of embodiments of the present invention 2.
Fig. 7 is the pie graph of the lighting device among the embodiment 2 of embodiments of the present invention 2.
Fig. 8 is the pie graph of the lighting device among the embodiment 3 of embodiments of the present invention 2.
Fig. 9 is the pie graph of the lighting device in the embodiments of the present invention 3.
Figure 10 is the pie graph that possesses the projector that the lighting device in the above-mentioned embodiment is arranged.
The specific embodiment
Below, with reference to the description of drawings embodiments of the present invention.Also have, in each figure, same-sign is represented same parts or suitable parts.
Embodiment 1
Fig. 1 is the pie graph of the lighting device 100 among the embodiment 1 of embodiments of the present invention 1, and Fig. 2 is the Action Specification figure of the device 100 of Fig. 1.
This lighting device 100 possesses luminous tube 10, as first speculum 20 of the principal reflection mirror of lighting device 100, and light-passing board 25, and as second speculum 30 of the auxiliary mirror of lighting device 100.Luminous tube 10, constitute by quartz glass etc., the sealing 13b that is positioned at the sealing 13a of front side by the illuminating part 11 of the central authorities of the pair of electrodes 12,12 of having enclosed tungsten system in inside and mercury, rare gas and a spot of halogen and clamping illuminating part 11 and is positioned at rear side constitutes.In each sealing 13a, 13b, sealing is connected respectively to the metal forming 14a, the 14b that are made of molybdenum on pair of electrodes 12a, the 12b, is provided with respectively on each metal forming 14a, 14b and is connected to outside lead-in wire 15a, 15b.Also have, get final product identical of connecting object of lead-in wire 15a, 15b with existing formation, for example, be connected to and be arranged on the not shown lighting device that goes out fixedly tool etc. with outside connection terminals.
Also have, on the outer peripheral face of illuminating part 11,, then can reduce owing to pass through the caused light loss of reflection of light at this place if enforcement in advance comprises the anti-reflection coating of the multilayer film of tantalum-oxide film, hafnium oxide film, oxidation titanium film etc.
Light-passing board 25 is members of the leading section (open side) that is configured in first speculum 20, is dispersing during for the destruction that prevents luminous tube 10 basically, usually, seamlessly is installed in around the leading section of first speculum 20.But, also can have installation with gap around the leading section for first speculum 20.Light-passing board 25,, quartzy, pyrex (pyrex, registration mark) glass low by coefficient of thermal expansion, perhaps pyroconductivity high, materials such as sapphire crystal, YAG (yttrium-aluminium-garnet), fluorite constitute.And, possess openings 25a at the central part of light-passing board 25.From openings 25a, the end of the sealing 13a of luminous tube 10 runs through light-passing board 25 and the outstanding outside that is exposed to by first speculum 20 and 25 enclosing region of light-passing board.
Also have, about the fixedly aftermentioned of second speculum 30 to sealing 13a.
And second speculum 30 is because be exposed in the high temperature of about 900～1000 ℃ of degree, so must use the material manufacturing of excellent heat resistance.For example, if make second speculum 30, utilize that coefficient of thermal expansion is low, quartzy, pyrex (pyrex, registration mark) glass, perhaps pyroconductivity high, sapphire, crystal, YAG (Y
3Al
5O
12, yttrium-aluminium-garnet), fluorite etc. and making, the distortion that then can prevent to be caused by heat, rotten etc. is and because so the high temperature of second speculum 30 that can also prevent of ultraviolet ray and ultrared transmissivity rises.
The reflecting surface 32 of second speculum 30 if can only reflect the visible light that can be used for throwing light on, and makes in illumination unwanted ultraviolet ray and infrared ray pass through, and then can reduce the heating that is produced on second speculum 30.Therefore, will only make the visible light reflection at this, and the dielectric multilayer film that ultraviolet ray and infrared ray are passed through is laminated on the reflecting surface 32 of second speculum 30.The also essential hear resistance of this dielectric multilayer film, for example, can be by tantalum compound and SiO
2Alternative stacked or hafnium compound and SiO
2Formations such as alternative stacked.
Also have, the lateral surface of second speculum 30, preferably: possess the light that makes not incident (infrared ray, ultraviolet ray, the visible light of coming in from reflecting surface 32 side leakages etc.) transmission by 32 reflections of its reflecting surface, the reflectance coating or the shape of the light scattered reflection of incident by 32 reflections of its reflecting surface are not shaped like that, and second speculum 30 does not absorb light as best one can.
And, as shown in fig. 1 like that, so that by the diameter D1 of the reflecting surface of first speculum 20 of the circular cone shown in the boundary utilized light L1, the L2 of the rear side that to shine these first speculum, 20 sides be lighting device 100 from illuminating part 11, the diameter d 1 of the lateral surface of ratio second speculum 30 greatly like that, and, make the diameter d 1 of the lateral surface of second speculum 30, become enter into by can utilize boundary light L1, L2 by the size of the inboard of the formed circular cone of light of first speculum 20 reflection like that, set the diameter d 1 of the lateral surface of second speculum 30.So, shine from illuminating part 11 among the light of rear side of lighting device 100, at the light that can utilize in the scope, after 20 reflections of first speculum, can be by 30 blockings of second speculum do not advance.
Also have, what is called can be utilized boundary light L1, L2, be meant from illuminating part 11 and shine the light of rear side of this lighting device 100, corresponding to light as the inboard border of the scope of illumination luminous energy actual utilization, existence is by the situation that structure determined of luminous tube 10 with by the situation that structure determined of first speculum 20.The so-called boundary the utilized light that structure determined by luminous tube 10, be in that shine the first speculum 20a side from illuminating part 11 be rear side and be not subjected to the effective light of conduct that sealing 13b etc. influences, is not blocked and the light of outgoing, and be subjected to be blocked effective light on the border between the light of light of influences such as sealing 13b.And, the so-called boundary the utilized light that structure determined by first speculum 20, be in that shine first speculum, 20 sides from illuminating part 11 be the rear side of lighting device 100 and be not subjected to sealing 13b etc. to influence the effective light of the conduct that is not blocked and the light of outgoing, and can not be by effective light on the border between the light reflection of the reflecting surface of first speculum 20, that can not utilize as illumination light as first speculum 20 that results from because of the existence of the through hole 21 of first speculum 20 etc.Also have,, under situation,, can utilize light almost whole that shine the rear side of lighting device 100 from illuminating part 11 according to present embodiment by the boundary light that structure determined of luminous tube 10 at the above-mentioned boundary light that utilizes.
If the diameter d of the lateral surface of second speculum 30 1 becomes big, then after reflecting, so reduce because advance to the utilization ratio that becomes many light of blocking of the light in the place ahead by first speculum 20.Thereby, reduce the diameter d 1 that should as far as possible dwindle the lateral surface of second speculum 30 for fear of the utilization rate of light.
The lighting device 100 that obtains with above formation works as follows.That is, as shown in Figure 2 like that, from comparing emergent light L1, L2, L5, the L6 that is positioned at rear side, by 20 reflections of first speculum and towards the place ahead of lighting device 100 with the center of the illuminating part 11 of luminous tube 10.And, from comparing light L3, the L4 that is positioned at the front side outgoing with the center of illuminating part 11, by 30 reflections of second speculum and after turning back to first speculum 20, by 20 reflections of first speculum and towards the place ahead of lighting device 100.Thus, can be used to emergent light almost whole of self-luminescent part 11.
By adopting the second such speculum 30 as described above, because can make from illuminating part 11 and emit to the reflecting surface that reflexes to rear side with the light beam of first speculum, 20 opposition sides (front side) by second speculum 30 and incide first speculum 20, so even the reflecting surface of first speculum 20 is little, also can make the light beam that penetrates from illuminating part 11 almost all optically focused penetrate to certain position, the optical axis direction size and the opening diameter of first speculum 20 are diminished.That is, can make lighting device 100, projector's 1000 miniaturizations, make lighting device 100 to be assembled into layouts in the projector 1000 also transfiguration is easy.
And, by second speculum 30 is set, even make 1st focal point F 1 of the 2nd focal point F 2 for the focal spot diameter that reduces the 2nd focal point F 2 places near first speculum 20, also can make from almost all the focusing on the 2nd focus and can utilize of the light of illuminating part 11 radiation, the utilization ratio of light is improved significantly by first speculum 20 and second speculum 30.
Secondly, fixing about second speculum 30 and sealing 13b is described.
By as the formation of embodiment 1, because second speculum, 30 usefulness bonding agents 31 are bonding and fixing to the sealing 13b of luminous tube 10, second speculum 30, for also with light-passing board 25 state of contact, so the heat that is produced by illuminating part 11, the sealing 13b from luminous tube 10 transmits to light-passing board 25 by bonding agent 31 and second speculum 30.And, because not single just contact condition between second speculum 30 and the light-passing board 25, if become the state of being adhesively fixed second speculum 30 is contacted reliably with light-passing board 25 by bonding agent, heat is easy to from luminous tube 10 to the conduction of second speculum, so further improve the thermal diffusivity of luminous tube 10.
Thereby, because the heat of luminous tube 10, dispel the heat to light-passing board 25 heat conduction by bonding agent 31 and second speculum 30, so, though because luminous tube 10 is provided with the temperature rising that heat radiation that second speculum 30 hinders illuminating part 11 also can reduce or prevent luminous tube 10.
As described above like that, the lighting device 100 of embodiment 1, the heat of utilizing the heat conduction to make to be produced by luminous tube 10 is to light-passing board 25 heat radiations, prevents to result from that the temperature of luminous tube 10 of the setting of first speculum 20 rises.
Fig. 3 is the pie graph of the lighting device 100A in the embodiment 2.The formation of this lighting device 100A is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
The openings 30b both sides of the openings 25a of light-passing board 25 and second speculum 30 go up and fix with the sealing 13a that bonding agent 31 bonds to luminous tube 10.
According to the formation of such embodiment 2, except the effect of above-mentioned embodiment 1, directly dispel the heat by bonding agent 31 to light-passing board 25 transmission from the heat of luminous tube 10.Thereby,, rise so can further reduce or prevent the temperature of luminous tube 10 because the area that transmits heat from luminous tube 10 becomes bigger than embodiment 1.
Embodiment 3
Fig. 4 is the pie graph of the lighting device 100B in the embodiment 3.The formation of this lighting device 100B is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
The face 30c of second speculum 30 is adhesively fixed and fixes second speculum 30 and light-passing board 25 to light-passing board 25 with bonding agent 31, and the openings 25a of light-passing board 25 is adhesively fixed with bonding agent 31 that the sealing 13a of luminous tube 10 goes up and fixedly light-passing board 25 and luminous tube 10.Wherein, second speculum 30 and luminous tube 10 are contactless state.
According to such embodiment 3, owing to dispel the heat to light-passing board 25 heat conduction by bonding agent 31 from the heat of luminous tube 10.And, being delivered to the heat of second speculum 30 by convective heat transfer or transfer of radiant heat from illuminating part 11, the face 30c by bonding agent 31 from second speculum 30 transmits to light-passing board 25.Thereby, because the heat of luminous tube 10, owing to dispel the heat to light-passing board 25 conduction, so, also can reduce or prevent that the temperature of luminous tube 10 from rising on luminous tube 10 even owing to the heat radiation that second speculum 30 hinders illuminating part 11 is set by the bonding agent 31 and second speculum 30.
Embodiment 4
Fig. 5 is the pie graph of the lighting device 100C in the embodiment 4.The formation of this lighting device 100C is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
The face 30c of the light-passing board 25 and second speculum 30 is bonding and fixing with bonding agent 31, and the openings 30b of the openings 25a of light-passing board 25 and second speculum 30 goes up and fixes with the sealing 13a that bonding agent 31 bonds to luminous tube 10 in the lump.
And, as shown in Figure 5 like that, fin 26 is set on the outer circumference end of light-passing board 25.
According to such embodiment 4, except the effect of above-mentioned embodiment 1, because to air, dispel the heat to the heat utilization fin 26 that light-passing board 25 transmits from luminous tube 10 by second speculum and bonding agent 31, so further promote transmission, can prevent further that the temperature of luminous tube 10 from rising from the heat of luminous tube 10.
Embodiment 5
Fig. 6 is the pie graph of the lighting device 100D in the embodiment 5.The formation of this lighting device 100D is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
Present embodiment, make the face 30c of second speculum 30 bond on the light-passing board 25 fixedly the light-passing board 25 and second speculum 30 by bonding agent 31, and between the sealing 13a of the openings 30b of the openings 25a of light-passing board 25 and second speculum 30 and luminous tube 10, be provided with the gap.
Formation according to such embodiment 5, the air that utilization is circulated in the formed gap between the sealing 13a of the openings 30b of the openings 25a of light-passing board 25 and second speculum 30 and luminous tube 10 and cool off luminous tube 10, the temperature that can prevent or reduce luminous tube 10 rises.
Embodiment 6
Fig. 7 is the pie graph of the lighting device 100E in the embodiment 6.The formation of this lighting device 100E is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
According to the formation of such embodiment 6, the air that circulates in the formed gap between the openings 27a that utilizes at light-passing board 27 and the sealing 13a of luminous tube 10 and cool off luminous tube 10, the temperature that can prevent or reduce luminous tube 10 rises.
As shown in Figure 7 like that because can be by pressure forming the one-body molded light-passing board 25 and second speculum 30, so can reduce components number.
Embodiment 7
Fig. 8 is the pie graph of the lighting device 100F in the embodiment 7.The formation of this lighting device 100F is identical with lighting device 100E at the embodiment shown in Fig. 76 basically, and the difference with the lighting device 100E of embodiment 6 is following point.
The first speculum 20A has can reflect from the rear side of illuminating part 11 size of the reflection of light face of half outgoing roughly.The plate thickness of light-passing board 28 is to form the front side thickness of the reflecting surface 32a of half roughly that covers illuminating part 11.Light-passing board 28 is fixed in the open end of the first speculum 20A.
Formation according to such embodiment 7, can obtain the effect same with embodiment 6, even and the material that can not carry out pressure forming, also can be by the reflecting surface 32a that easily shaping is easily worked as second reflecting surface on light-passing board 28 such as cutting and grinding.
Embodiment 8
Fig. 9 is the pie graph of the lighting device 100G in the embodiments of the present invention 8.The formation of this lighting device 100G is basically with identical at the lighting device 100 of the embodiment 1 shown in Fig. 1 and Fig. 2, and the difference with the lighting device 100 of embodiment 1 is following point.
Under the situation of the lighting device 100G of embodiment 8, it is the jut 16 of different parts that luminous tube 10 possesses near the illuminating part 11 of sealing 13a with luminous tube.The second speculum 30A, the elastic force that is wound in the spring 40 on the sealing 13a by utilization be to jut 16 pushings, with the reflecting surface 30a of second speculum 30 and the outer peripheral face of illuminating part 11 between be fixed to a gap on the sealing 13a.Consider the thermal expansion of sealing 13a, with the diameter wind spring 40 bigger than the external diameter of sealing 13a.Spring 40 for example, can utilize light-passing board 25 to carry out to the pushing of illuminating part 11 sides.And, light-passing board 25 by bonding agent 31 to be connected to sealing 13a with being adhesively fixed state.And, constitute spring 40 by electroconductive member, an end of spring 40 is electrically connected on the lead-in wire 15b that stretches out from the sealing 13b with the side opposition side of mounting spring 40.
Lighting device 100G according to such embodiment 8, improve the utilization ratio of light owing to the effect of the second speculum 30A, and increase for the heating of the setting that is accompanied by the second speculum 30A, air cooling in the gap of the reflecting surface 30a by the second speculum 30A and the outer peripheral face of illuminating part 11, and be situated between and undertaken conducting the heat radiation that causes from luminous tube 10 to the heat of light-passing board 25 by bonding agent 31, the temperature that can prevent or reduce luminous tube 10 thus rises.And then, be electrically connected on the lead-in wire 15b that stretches out from sealing 13b because of an end that makes spring 40 with the side opposition side of mounting spring 40, lighting a lamp during beginning of luminous tube 10, easily discharge breakdown takes place and easily light a lamp.
Manufacturing about lighting device
Secondly, the manufacturing sequence about the lighting device 100～100D of embodiment 1～5 describes.Also having, at this, is that prerequisite describes with the situation of making the light-passing board 25 and second speculum 30 respectively individually.At first begin,, collect the data of the structure that relates to the luminous tube 10 and first speculum 20 each luminous tube 10.In these data, comprise the interelectrode distance in the illuminating part 11, the each several part shape and the size of luminous tube 10, the shape of first speculum 20 and size, the focus of first speculum 20 (at first speculum is under the situation of ellipse of revolution shape, the 1st focus and the 2nd focus).Then, based on these data, utilize the outgoing state of simulation such as computer from the light of the illuminating part 11 of each luminous tube 10.Secondly, based on the outgoing state simulation of the light that comes self-luminescent part 11, carry out design corresponding to second speculum 30 of each luminous tube 10.This design can utilize computer simulation etc. too and carry out, and by such simulation, determines to realize the shape (external diameter, internal diameter and reflector shape etc.) as the effect of second speculum 30 that has illustrated.Then, based on this design, make second speculum 30 corresponding to each luminous tube 10.Thereafter, make front side that the reflecting surface 30a of second speculum 30 of made surrounds illuminating part 11 roughly half, and, make that the incident light that enters into second speculum 30 from the center outgoing of illuminating part 11 is consistent with the normal of the reflecting surface 30a of second speculum 30 to be adjusted like that on one side, on one side second speculum 30 is fixed on the sealing 13a and/or light-passing board 25 of luminous tube 10.
The bonding agent that is adhesively fixed 31 that is used for the face 30c of the openings 30b of the sealing 13a of the openings 25a of the sealing 13a of luminous tube 10 and light-passing board 25 and/or luminous tube 10 and second speculum 30 and/or the light-passing board 25 and second speculum 30 preferably utilizes high temperature resistant and silica that heat conductivity is good and aluminium oxide mixes the class bonding agent or be the mineral-type bonding agent of main component with the aluminium nitride.Also have,, enumerate trade name ス ミ セ ラ system (Korean and Japanese chemical industry (strain) is made, and ス ミ セ ラ system is the login trade mark of Sumitomo Chemical (strain)) as an example wherein.And, preferred: bonding agent 31, be coated in and make from illuminating part 11 outgoing, and then the reflecting surface 30a of transmission second speculum 30 and the light (light leak of ultraviolet ray, infrared ray and visible light etc.) that comes, on such position that is not blocked.
Secondly, dispose first speculum 20 and luminous tube 10 as described above, the center that the roughly consistent electrode in the luminous tube 10 that is fixed with second speculum 30 of first focus that makes the speculum 20 of winning is 12, and the position of adjusting the luminous tube 10 of relative first speculum 20 makes the brightness on the precalculated position become maximum, locates the fixedly luminous tube 10 and first speculum 20 in position.
Also have, each lighting device 100E～100G of the embodiment 6～8 shown in Fig. 7～Fig. 9 also can be as the benchmark manufacturing.
; the lighting device that possesses the formation that the temperature of luminous tube 10 of the setting of second speculum 30 that is used to prevent or reduces the embodiments of the present invention 1～8 that result from shown in Fig. 1～Fig. 9 rises; be not limited to being suitable for to the lighting device 100～100G shown in Fig. 1～Fig. 9; possessing first speculum 20 that maintains luminous tube 10; in the lighting device of the light-passing board 25 of the leading section that is configured in first speculum 20; illuminating part 11 peripheries that the reflecting surface of second speculum 30 surrounds luminous tube 10 like that with other lighting device of first speculum, 20 subtends configuration in; also can in the scope that does not break away from its purport, be applicable in the various forms, for example also can be following distortion.
The fin 26 of embodiment 4 also can be combined in the formation of embodiment 1～3 and embodiment 5～8.Be combined to by the fin 26 that makes embodiment 4 in the formation of embodiment 1～3 and embodiment 5～8, embodiment 1～3 and embodiment 5～8 can also increase the effect of embodiment 4.
And in the embodiment shown in Fig. 1～Fig. 5 1～4, the light-passing board 25 and second speculum 30 also can be by making their one-body molded making.And, in the embodiment shown in Fig. 1～Fig. 5 1～5, under the situation that second speculum 30 is fixed on the light-passing board 25, second speculum 30 and/or light-passing board 25, also can not be fixed on the sealing 13a, and can heat conducting form only contacting sealing 13a.
Under the situation of embodiment 1～4, light-passing board 25 needn't necessarily be fixed in the open end of first speculum 20.
The formation of projector
Though below describe about the projector 1000 that possesses lighting device 100, any lighting device among lighting device 100A～100G is constituting projector 1000 similarly also.
Figure 10 is the pie graph that possesses the projector 1000 that above-mentioned lighting device 100 is arranged.This optical system possesses: possess luminous tube 10, the first speculums 20 are arranged, light-passing board 25, and the lighting device 100 of second speculum 30; Possesses handlebar is adjusted to the unit of predetermined light from the emergent light of lighting device 100 lamp optical system 300; Has dichronic mirror 382,386, the coloured light split-optics 380 of speculum 384 grades; Have light incident side lens 392, relay lens 396, the relay optical system 390 of speculum 394,398; Corresponding to the field lens 400,402,404 of each coloured light and as liquid crystal panel 410R, 410G, the 410B of optic modulating device; Cross colour splitting prism 420 as the coloured light combining optical; With projecting lens 600.
Secondly, the effect of the projector 1000 of above-mentioned formation is described.At first, from comparing the emergent light that is positioned at rear side with the center of the illuminating part 11 of luminous tube 10, by 20 reflections of first speculum towards the place ahead of lighting device 100.And, from comparing the emergent light that is positioned at the front side with the center of illuminating part 11, by 30 reflections of second speculum after turning back to first speculum 20, by 20 reflections of first speculum towards the place ahead of lighting device 100.
The light that penetrates from lighting device 100 enters concavees lens 200, and the direct of travel of light is adjusted to after the optical axis 1 of lamp optical system 300 is parallel substantially at this place, incides in each lenslet 321 of the 1st lens arra 320 that constitutes the integrator lens.The 1st lens arra 320 makes incident light be divided into a plurality of segment beams corresponding to the number of lenslet 321.From the each several part light beam of the 1st lens arra 320, incide and have the lenslet 341 that corresponds respectively to its each lenslet 321 and constitute in the 2nd lens arra 340 of integrator lens.Then, from the emergent light of the 2nd lens arra 340, optically focused is near the polarization separating film of the correspondence of polarization conversion device array 360 (omitting diagram).At this moment, be adjusted into, among the incident light of polarization conversion device array 360 incidents, only corresponding to the light incident of the part of polarization separating film by shadow shield (omit diagram).
In polarization conversion device array 360, the light beam that is incident in this place is transformed into the rectilinearly polarized light of identical type.Then, consistent a plurality of segment beams enter overlapping lens 370 by polarization conversion device array 360 in the polarization direction, and at this place, the each several part light beam of irradiating liquid crystal panel 410R, 410G, 410B is adjusted to, and overlaps on the corresponding panel face.
Coloured light split-optics 380 possesses the 1st and the 2nd dichronic mirror 382,386, has to make the light that penetrates from lamp optical system, is separated into the function of red, green, blue 3 coloured light.The 1st dichronic mirror 382 makes the red light composition transmission among the light that penetrates from overlapping lens 370, and reflection blue light component and green light composition.Transmission the red light of the 1st dichronic mirror 382, by speculum 384 reflection, arrive the liquid crystal panel 410R that red light are used by field lens 400.This field lens 400 makes the each several part optical beam transformation that penetrates from overlapping lens 370 be paired in the parallel light beam of its central shaft (chief ray).Liquid crystal panel 410G, the 410B field lens 402,404 before that is arranged on other works similarly.
And then among by the blue light and green light of 382 reflections of the 1st dichronic mirror, green light arrives the liquid crystal panel 410G that green light is used by 386 reflections of the 2nd dichronic mirror by field lens 402.On the other hand, blue light, transmission the 2nd dichronic mirror 386, by relay optical system 390, that is, light incident side lens 392, speculum 394, relay lens 396, and speculum 398 further arrive the liquid crystal panel 410B that blue lights are used by field lens 404 again.Also have, relay optical system 390 is used for blue light, is because the optical path length of blue light is longer than the optical path length of other coloured light, is the cause for the reduction of the utilization ratio of the light that prevents to cause because of dispersing of light etc.That is, be the segment beam that incides light incident side lens 392 in order to make, directly pass to the cause of field lens 404.Also have, relay optical system 390 though be the formation by the blue light among 3 kinds of coloured light, also can be other the formation of coloured light by red light etc.
3 liquid crystal panel 410R, 410G, 410B make each coloured light of incident, according to the image information modulation that is provided, form the image of each coloured light.Also have,, usually, polarization plates is set in light entrance face side, the light-emitting face side of 3 liquid crystal panel 410R, 410G, 410B.
The light modulated of 3 looks that penetrate from above-mentioned each liquid crystal panel 410R, 410G, 410B enters into the cross colour splitting prism 420 of the function with the coloured light combining optical that forms coloured image as synthetic these light modulated.In cross colour splitting prism 420, the dielectric multilayer film of reflection red light and the dielectric multilayer film of reflect blue light form roughly X word shape on the interface of 4 right-angle prisms.By the synthetic red, green, blue 3 look light modulated of these dielectric multilayer films, be formed for the synthetic light of projection of color images.Then, the synthetic light by cross colour splitting prism 420 synthesizes enters into projecting lens 600 at last, is shown on the screen as colour image projection from this.
According to above-mentioned projector 1000,, can seek the high brightnessization and the long lifetime of projector 1000 according to the lighting device 100 or any effect that has illustrated of 100A～100G that are used for wherein.
Also have, projector of the present invention is not limited to above-mentioned embodiment, can implement under all forms in the scope that does not break away from its purport, for example also can be following distortion.
In the above-described embodiments,, should invent, and also go for not using in the projector of such lens arra though used 2 lens arras 320,340 that the light of lighting device 100 are divided into a plurality of segment beams.
In the above-described embodiments, though about adopting liquid crystal panel to be illustrated as the example of the projector of optic modulating device, but the present invention also goes for the modulating device outside the liquid crystal panel, for example also goes for having adopted by micro mirror constituting in the projector of modulating device of pixel.
In the above-described embodiments, though be illustrated about the example of the projector that adopts 3 optic modulating devices, the present invention also can be applicable to and adopt in 1,2 or the projector more than or equal to 4 optic modulating devices.
In the above-described embodiments, though be that example is illustrated with the projector of the liquid crystal panel that adopts transmission-type, the present invention also goes for adopting in the projector of liquid crystal panel of reflection-type.At this, so-called " transmission-type ", the optic modulating device that refers to liquid crystal panel etc. is the type of transmitted light, so-called " reflection-type ", referring to it is catoptrical type.And optic modulating device is not limited to liquid crystal panel, for example, also can be the device that has adopted micro mirror.And lamp optical system of the present invention had both gone for carrying out the front projection type projector of projection from the direction of watching, and, can also be applicable to from carrying out the rear projection projector of projection with the direction opposition side of watching.
The present invention, except in the lighting device of projector, utilizing, also can as other optical device lighting device and utilize.
Claims (14)
1. lighting device, it possesses: the luminous tube with sealing of the both sides of carrying out luminous illuminating part and being positioned at this illuminating part between pair of electrodes, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that
Make the front part of surrounding above-mentioned illuminating part, to second speculum of the above-mentioned first speculum lateral reflection from the light of above-mentioned illuminating part, be adhesively fixed at least one side in above-mentioned sealing and the above-mentioned light-passing board;
Above-mentioned light-passing board contacted with above-mentioned second speculum or be adhesively fixed, above-mentioned light-passing board is contacted with at least one side in above-mentioned second speculum or the above-mentioned sealing that is adhesively fixed on.
2. lighting device, it possesses: the luminous tube with sealing of the both sides of carrying out luminous illuminating part and being positioned at this illuminating part between pair of electrodes, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that
Make the front part of surrounding above-mentioned illuminating part, to second speculum of the above-mentioned first speculum lateral reflection from the light of above-mentioned illuminating part, be adhesively fixed on the above-mentioned light-passing board;
Between above-mentioned light-passing board and above-mentioned second speculum and above-mentioned luminous tube, be provided with the gap.
3. according to claim 1 or 2 described lighting devices, it is characterized in that,
Above-mentioned being adhesively fixed is by being adhesively fixed that bonding agent carries out.
4. according to the described lighting device of claim 3, it is characterized in that,
Above-mentioned bonding agent is aluminium nitride class or silica and aluminium oxide mixing class bonding agent.
5. lighting device, it possesses: the luminous tube with sealing of the both sides of carrying out luminous illuminating part and being positioned at this illuminating part between pair of electrodes, keep the light that above-mentioned luminous tube and reflection send from this luminous tube and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that
Surround the front part, integrally formed from above-mentioned second speculum and the above-mentioned light-passing board of the light of above-mentioned illuminating part of above-mentioned illuminating part to the above-mentioned first speculum lateral reflection.
6. lighting device, it possesses: the luminous tube with sealing of the both sides of carrying out luminous illuminating part and being positioned at this illuminating part between pair of electrodes, keep the light that above-mentioned luminous tube and reflection send from this illuminating part and make it first speculum towards the place ahead, light-passing board with the leading section that is configured in above-mentioned first speculum, it is characterized in that
Possess the front part of surrounding above-mentioned illuminating part, to second speculum of the above-mentioned first speculum lateral reflection from the light of this illuminating part;
The outer peripheral face of above-mentioned second speculum and above-mentioned illuminating part separates subtend configuration with gap, and by have the spring on the periphery that is wound on above-mentioned sealing with gap for this outer peripheral face, is fixed near the above-mentioned illuminating part and be pressed.
7. according to the described lighting device of claim 6, it is characterized in that,
Constitute above-mentioned spring by the electric conductivity coil, an end of this electric conductivity coil is connected on the lead-in wire that stretches out from the sealing with the above-mentioned spring side opposition side of configuration.
8. according to claim 6 or 7 described lighting devices, it is characterized in that,
Above-mentioned light-passing board is adhesively fixed with bonding agent on the above-mentioned sealing.
9. according to the described lighting device of claim 8, it is characterized in that,
Above-mentioned bonding agent is aluminium nitride class or silica and aluminium oxide mixing class bonding agent.
10. according to any one the described lighting device in the claim 1～9, it is characterized in that,
Above-mentioned light-passing board is by the low material of the coefficient of thermal expansion with light transmission or have any in the high material of the pyroconductivity of light transmission and constitute.
11. any one the described lighting device according in the claim 1～10 is characterized in that,
The substrate of above-mentioned second speculum is made of any in the high material of the low material of coefficient of thermal expansion or pyroconductivity.
12. any one the described lighting device according in the claim 1～11 is characterized in that,
The peripheral part of above-mentioned light-passing board is provided with fin.
13. any one the described lighting device according in the claim 1～12 is characterized in that,
One end of above-mentioned sealing is side-prominent to open area from running through above-mentioned light-passing board ground by above-mentioned first speculum and above-mentioned light-passing board institute area surrounded.
14. a projector, it possess lighting device and incident from the light of this lighting device, modulate the optic modulating device of this incident light corresponding to the image information that is provided, it is characterized in that,
As above-mentioned lighting device, possesses each the described lighting device in the claim 1～13.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/798,275 US7059746B2 (en) | 2003-03-25 | 2004-03-12 | Illumination device and projector equipping the same |
| US10/798,275 | 2004-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1788179A true CN1788179A (en) | 2006-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800127401A Pending CN1788179A (en) | 2004-03-12 | 2004-10-26 | Illuminator and projector with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1788179A (en) |
| WO (1) | WO2005088189A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765241A (en) * | 2014-01-08 | 2015-07-08 | 中强光电股份有限公司 | Projection device and light source module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4613885B2 (en) * | 2006-06-16 | 2011-01-19 | 岩崎電気株式会社 | Lamp with reflector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3224103B2 (en) * | 1992-03-04 | 2001-10-29 | 松下電子工業株式会社 | Metal halide lamp |
| JP3184404B2 (en) * | 1994-07-13 | 2001-07-09 | 松下電子工業株式会社 | Metal halide lamp with reflector |
| JP3011906B2 (en) * | 1997-07-09 | 2000-02-21 | 株式会社ウシオスペックス | Light source device |
| JP3330134B2 (en) * | 1999-12-02 | 2002-09-30 | 松下電器産業株式会社 | Discharge lamp and lamp device |
| JP2002222601A (en) * | 2001-01-26 | 2002-08-09 | Ushio Inc | Light source device |
| JP2004079225A (en) * | 2002-08-12 | 2004-03-11 | Toto Ltd | Lamp unit |
-
2004
- 2004-10-26 CN CNA2004800127401A patent/CN1788179A/en active Pending
- 2004-10-26 WO PCT/JP2004/016204 patent/WO2005088189A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765241A (en) * | 2014-01-08 | 2015-07-08 | 中强光电股份有限公司 | Projection device and light source module |
| US9470961B2 (en) | 2014-01-08 | 2016-10-18 | Coretronic Corporation | Projection apparatus and light source module having fixing wire |
| CN104765241B (en) * | 2014-01-08 | 2017-01-04 | 中强光电股份有限公司 | Projection arrangement and light source module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005088189A1 (en) | 2005-09-22 |
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