WO2005022584A1 - 発光ランプ、並びにその発光ランプを備えた照明装置及びプロジェクタ - Google Patents
発光ランプ、並びにその発光ランプを備えた照明装置及びプロジェクタ Download PDFInfo
- Publication number
- WO2005022584A1 WO2005022584A1 PCT/JP2004/012430 JP2004012430W WO2005022584A1 WO 2005022584 A1 WO2005022584 A1 WO 2005022584A1 JP 2004012430 W JP2004012430 W JP 2004012430W WO 2005022584 A1 WO2005022584 A1 WO 2005022584A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- valve
- sealing
- section
- emitting lamp
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2026—Gas discharge type light sources, e.g. arcs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Definitions
- the present invention relates to a light-emitting lamp, and a lighting device and a projector having the light-emitting lamp.
- the present invention relates to a light-emitting lamp, a lighting device including the light-emitting lamp, and a projector including the light-emitting lamp.
- the present invention has been made in view of the above, and provides a light-emitting lamp having a size determined so that a temperature associated with light emission of the light-emitting lamp can be managed at a target temperature, and a lighting device and a projector including the light-emitting lamp. This is also the purpose.
- a light-emitting lamp includes a bulb portion having a pair of electrodes built-in, and a sealing portion provided on both sides of the bulb portion with a conductor connected to the bulb and integrated with the bulb portion.
- An inner diameter of the valve portion, an outer diameter of the valve portion, The three values of the four sizes of the diameter of the sealing portion and the length of the sealing portion, and the value of heat loss due to convection heat conduction of the valve portion depending on power consumption are determined in advance. Then, based on the determined values, the value of the remaining one of the sizes of the valve portion is set so that the average value of the inner surface temperature of the valve portion becomes a predetermined target value. It is characterized by being decided. As a result, it is possible to prevent the internal temperature of the light emitting lamp from excessively increasing or excessively decreasing, and to perform stable light irradiation.
- the heat loss due to convection conduction of the bulb portion, the inner diameter of the pulp portion, the diameter of the sealing portion, and the length of the sealing portion are determined in advance. Based on the heat loss amount, the inner diameter of the valve section, the diameter of the sealing section, and the length of the sealing section, the valve section so that the average value of the inner surface temperature of the valve section falls within a target range. Is preferably determined. This makes it possible to determine the outer diameter of the valve according to the heat loss due to convection and conduction in the pulp.
- TT is a surface temperature of the bulb portion
- H is a heat loss amount due to convection heat conduction of the valve portion
- TH is a thickness of the bulb portion
- p is the bulb.
- MS is the pulp area at the center of the valve in the thickness direction
- ITT is ITT
- ITT TT + ( ⁇ TH) / (pMS)
- T is a surface temperature of the bulb portion when no heat is released from the sealing portion of the bulb portion
- R3 is a thermal resistance R1 from the bulb portion to natural convection.
- R3 (R1R2) / (2R1 + R2)
- the average value of the inner surface temperature is 900 ° C. or more and 100 ° C. or less. By doing so, it is possible to prevent the glass surface constituting the light emitting lamp from becoming cloudy or black.
- the angle formed by an imaginary line connecting the center between the electrodes of the bulb portion to one end of a boundary between the bulb portion and the sealing portion and a reference line connecting the electrodes is 4 It is preferable that the angle be within 0 degrees. According to this, when the emitted light generated in the electrode is emitted from the bulb portion, the ratio of the light blocked by the sealing portion can be set to 20% or less.
- the light emitting lamp of the present invention is provided with a reflecting means for returning the light emitted from the bulb portion to the bulb portion again.
- the internal temperature of the bulb can be controlled to the target temperature while effectively utilizing light.
- An illumination device is a lighting device in which a lamp is fixed to the bottom of a circular reflector, and the lamp includes any one of the light-emitting lamps described above. According to this, when the lamp emits light, the average value of the inner surface temperature of the bulb portion is automatically controlled to the target temperature, and the lighting device including the lamp that emits light with stable illuminance can be provided.
- the projector according to the present invention is a projector that receives illumination light from a lighting device into a light modulation device to generate an image and projects the image, wherein the lighting device according to claim 8 is provided as a light source of the lighting device. It is characterized by the following. According to this, it is possible to provide a projector having the same effect as the above-described lighting device.
- FIG. 1 is an external view of a mercury lamp according to a first embodiment of the present invention.
- FIG. 2 is an external view showing a dimension symbol of the mercury lamp in FIG.
- FIG. 3 is a schematic diagram showing the thermal resistance of the mercury lamp of FIG.
- FIG. 4 is an external view illustrating a boundary between a bulb portion and a sealing portion of the mercury lamp in FIG.
- FIG. 5 is an explanatory diagram regarding light distribution characteristics of a light source having a uniform brightness with a certain reference length.
- FIG. 6 is a graph showing an analysis example of an outer diameter of a bulb portion of a light-emitting lamp without a second reflecting mirror.
- FIG. 7 is a graph showing an analysis example of an outer diameter of a bulb portion of a light-emitting lamp having a second reflecting mirror.
- FIG. 8 is a first configuration diagram illustrating a lighting device according to a second embodiment of the present invention.
- FIG. 9 is a second configuration diagram showing a lighting device according to Embodiment 2 of the present invention.
- FIG. 10 is a configuration diagram illustrating an optical system of a projector according to a third embodiment of the invention.
- Fig. 11 An external view of a mercury lamp whose bulb has a spherical outer shape and an inner spheroid.
- FIG. 1 2 External view of a mercury lamp with an outer and inner bulb with a spheroid
- FIG. 1 is an external view of a mercury lamp for describing Embodiment 1 of the present invention.
- the mercury lamp shown in FIG. 1 has a substantially spherical (including substantially spherical) bulb portion 2 in which a pair of discharge electrodes 1a and 1b are incorporated.
- Sealing portions 3 a, 3 of equal diameter and length are integrated with the valve portion 2 on both sides of the valve portion 2 and extend continuously from the valve portion 2 to the left and right sides. b.
- the valve section 2 and the sealing sections 3a and 3b are integrally formed of a transparent material such as quartz glass. Inside the sealing portions 3a and 3b, conductors 4a and 4b connected to the electrodes 1a and lb are provided, and these conductors are externally connected from the ends of the sealing portions 3a and 3b. It is growing. In FIG. 1, the description of mercury, rare gas, and the like sealed inside the valve section 2 is omitted.
- Table 1 shows that the energy distribution of a mercury lamp as shown in Fig. 1 is as shown in Table 1. Among them, in the present invention, heat loss due to convection and conduction is considered. This is because these heat losses mainly contribute to the heat generation of the valve section 2. According to Table 1, the heat loss energy due to convection and conduction is 6.
- the predetermined lamp power consumption also referred to as Table 2 shows the heat loss in each case. According to Table 2, when the lamp power is 10 OW, the heat loss due to convection and conduction is 6.6 W, and when the lamp power is 130 W, the heat loss due to convection and conduction is 8.6 W, and the lamp power is 15 OW. In this case, the heat loss due to convection and conduction is 9.9 W.
- each size of the valve section 2 (the inner diameter ID of the bulb section, the outer diameter of the bulb section!), The diameter of the sealing section (1, and the length of the sealing section 1), and the above convection If the amount of heat loss due to conduction is known, the theoretical values of the surface temperature and the inner surface temperature of the bulb portion 2 during light emission can be calculated.
- valve part diameter ID three values out of the four size values of the valve part diameter ID, the valve part outer diameter 0D, the sealing part diameter, and the sealing part length 1, and the lamp
- the convection of the valve section 2 depending on the power 'Heat loss due to conduction (or heat loss) H is determined in advance, and the theoretical value of the inner surface temperature of the valve section 2 is determined in advance based on the determined values.
- the value of the undetermined size among the sizes of the valve section 2 can be determined so that the target value is obtained.
- the inner diameter of the valve section 2]! The diameter d of the sealing sections 3a and 3b, the length 1 of the sealing sections 3a and 3b, and the target value of the theoretical inner surface temperature of the valve section 2.
- the outer diameter 0D of the valve section 2 can be determined based on those values.
- the outside surface area OS (the area excluding the contact part with the sealing parts 3a and 3b) of the valve part 2 in Fig. 2 is
- the surface temperature T of the bulb 2 when the bulb having the outer surface area determined by the equation (1) generates heat due to the heat loss H is ⁇ , where there is no heat radiation at the sealing portions 3 a and 3 b.
- T (HZ (OSX 2.5 1 XC)) ° 8 ⁇ (0D / 2) 0 ' 2
- the thermal resistances Rl and R2 in the pulp section 2 can be schematically shown in FIG.
- the thermal resistance R1 to natural convection in the valve section 2, the thermal resistance R2 when heat is dissipated by conduction from the vanoleb section 2 to the sealing sections 3a and 3b, and the combined resistance R3 are ,
- R3 (R1 ⁇ R2) / (2R1 + R2)... (5)
- the theoretical inner surface temperature ITT (this can be regarded as the average value of the inner surface temperature, which differs depending on the location of the light emitting bulb.In the present invention, the theoretical inner surface temperature ITT is the same as the average value of the inner surface temperature. Is called)
- ITT TT + ( ⁇ ⁇ TH) / (p ⁇ MS)... (7)
- MS is the valve area at the center of the pulp section 2 in the thickness direction.
- the outer diameter 0D of the valve section is finally determined.
- the theoretical inner surface temperature ITT of the valve section 2 may be set as a predetermined target range, and the outer diameter 0D of the valve section 2 corresponding to the predetermined target range may be determined.
- the outer diameter 0D of the valve section 2 is determined by using computer analysis or the like so that the theoretical inner surface temperature ITT falls within the range.
- the bulb portion 2 has a substantially spheroidal outer shape, and the inner surface has a spheroidal surface shape in which the optical axis is the major axis when the directions of both electrodes are the optical axis.
- the formula for determining 0D of the present invention holds.
- the ID at this time is the diameter of the minor axis of the ellipse.
- Luminescent lamps are usually made of quartz and cannot be used at temperatures above their heat-resistant temperature (softening point: 1500 ° C). Further, even if the quartz is not softened, when the temperature is close to 110 ° C., the surface recrystallizes and becomes cloudy, and loses transparency and causes loss of brightness. On the other hand, when the temperature is close to 800 ° C., the halogen cycle does not work well, and the tungsten of the electrode adheres to the surface of the light-emitting lamp, causing the electrode to become black, thereby lowering the brightness.
- the internal temperature of the valve section 2 may have a temperature difference of about 200 ° C above and below due to internal convection and the like. In practice, about 150 ° C above the inner surface of the valve section 2 It is assumed that the temperature will be up to about 850 ° C below the inner surface of the valve section 2. Taking these factors into consideration, the average temperature of the upper and lower inner surfaces of the pulp section 2 is set in the range of approximately 900 ° C to 100 ° C.
- Some light-emitting lamps are provided with reflecting means on or near the surface of the bulb section 2 so that the light emitted from the bulb section 2 is returned to the bulb section 2 again.
- This include, for example, a coating in which approximately half of the surface of the valve section 2 is coated with a reflective film, and a reflecting mirror in which almost half of the surface of the valve section 2 is arranged with a gap (hereinafter referred to as a second reflecting mirror).
- a second reflecting mirror in which almost half of the surface of the valve section 2 is arranged with a gap
- the heat loss in the pulp section 2 increases due to the presence of the reflection means.
- each size of the valve section 2 can be similarly calculated and determined using the method (formula) described above. However, the heat loss in this case is obtained as follows, for example.
- Table 3 shows the energy distribution of a light-emitting lamp in which a second reflecting mirror is arranged near the pulp section 2.
- the visible light loss can be measured by actual measurement, and the measured visible light loss may be regarded as heat loss (including radiation, convection, and conduction).
- the energy distribution shown in Table 3 is obtained by distributing the heat loss according to the loss ratio between radiation and convection and conduction in Table 1.
- Table 4 shows the calculation of heat loss due to convection 'conduction based on Table 3 corresponding to the lamp power. Table 4 corresponds to Table 2.
- the vanoleb portion 2 and the sealing portions 3a and 3b are continuous with the same material, a virtual boundary (shown by a broken line) is assumed for convenience.
- the value of 40 degrees is based on the following reasons.
- the light distribution characteristics of light of equal brightness ⁇ 1 of a certain reference length are accumulated from 0 to 180 degrees and the ratio is calculated, the brightness ratio is plotted on the vertical axis and the angle is plotted on the horizontal axis. , As shown in Figure 5. From FIG. 5, it can be seen that the brightness ratios in the range of angles 0 to 40 degrees and angles of 140 to 180 degrees fall within 0.2 in total.
- the sealing portions 3a and 3b come within a range of ⁇ 40 degrees with respect to a portion corresponding to this angle, that is, a line connecting the centers of the electrodes, the electrodes 1a and 1b This is because more than 80% of the light emitted from the light source can be used.
- the predetermined sizes are the inner diameter ID of the valve part: 4.9 mm, the diameter d of the sealing part: 5.5 mm, and the length of the sealing part 1: 2 Omm.
- the lamp powers in Tables 2 and 4 are set for the case without the second reflector and the case with the second reflector, respectively. Loss values were used.
- the valve section is provided.
- the outer diameter 0D of each was calculated.
- the results are shown in Figs. 6 and 7.
- the dots are displayed, and those dots are connected by lines. Therefore, in this condition, the outer diameter 0D of the bulb portion is between the two lines (including on the line) of Fig. 6 corresponding to the lamp power when the second reflector is not provided. If there is, it may be determined between the two lines in Fig. 7 corresponding to the lamp power (including on the line).
- the present invention can be applied to the case where the bulb portion has another shape.
- the present invention can also be applied to a valve in which the outer shape and inner shape of the valve portion are spheroidal.
- FIG. 8 is a configuration diagram according to a first lighting device 100 of Embodiment 2 of the present invention.
- the lighting device 100 includes a light-emitting lamp 10 and a first reflecting mirror 20 that reflects light emitted backward from the valve portion 2 of the light-emitting lamp 10 toward the front.
- the shape of the first reflecting mirror 20 can be, for example, elliptical.
- the light-emitting lamp 10 has one end 3a of the sealing portion 2 inserted into a through hole 21 at the bottom of the first reflecting mirror 20.
- the first reflecting mirror is made of an inorganic adhesive 22 such as cement. 20 and fixed together.
- metal foils 14 a and 14 b made of molybdenum connected to the electrodes la and lb are sealed in the sealing portions 3 a and 3 b, and the metal foils 14 a and 14 b are Lead wires 15a and 15b to be connected to the outside are provided, respectively.
- FIG. 9 is a configuration diagram of a second lighting device 10 OA according to the second embodiment of the present invention.
- the lighting device 10 OA includes a second reflecting mirror 6 that returns the light emitted from the light emitting lamp 1 OA forward from the bulb portion 2 to the pulp portion 2 again.
- the second reflecting mirror 6 has a reflecting surface surrounding almost half of the front side of the bulb portion 2, and the incident light emitted from the center of the electrodes 1 a and 1 b and entering the second reflecting mirror 6 and the second reflecting mirror Reflecting surface of mirror 6 Are arranged so as to match the normal line at.
- the second reflecting mirror 6 is fixed to one of the sealing portions 3b by cement 31 or the like.
- the center between the electrodes 1 a and lb is positioned at substantially the same position as the position of the first focal point F 1 of the first reflecting mirror 20.
- the reflecting surface of the second reflecting mirror 6 surrounds almost half of the front side of the bulb 2, and that the reflecting surface of the first reflecting mirror 20 covers almost half of the rear of the bulb 2. OK.
- the size of the first reflecting mirror 20 is considerably smaller than that in the case of FIG.
- many parts of the light-emitting lamp 1OA protrude outside the opening end of the reflecting surface of the first reflecting mirror 20.
- a gap of 0.2 mm or more is provided between the bulb portion 2 and the second reflecting mirror 6 so as to promote heat radiation of the bulb portion 2 covered by the second reflecting mirror 6. That's not.
- the rear surface of the second reflecting mirror 6 is configured to transmit light (infrared / ray, ultraviolet ray, visible light leaking from the reflecting surface, etc.) incident from the reflecting surface side, or to reflect the light.
- the second reflecting mirror 6 is formed so as to absorb the light as much as possible by forming it so as to have a reflecting film or a shape that diffuses and reflects the light incident from the surface side.
- the lighting device 10OA operates as follows. That is, light emitted from the rear side of the bulb unit 2 is reflected by the first reflecting mirror 20 and travels forward of the lighting device 100A. The light emitted from the front side of the bulb 2 is reflected by the second reflecting mirror 6, returns to the bulb 2 again, and enters the first reflecting mirror 20 from there. Then, the light is also reflected by the first reflecting mirror 20 and travels in front of the lighting device 10OA. As a result, most of the light emitted from the bulb section 2 can be used.
- the temperature of the light-emitting lamps 100, 100A used in the lighting device 100, 100A is maintained at an appropriate value. This can be avoided, and the quality of illumination light can be prevented from deteriorating.
- FIG. 10 is a configuration diagram of a light-emitting lamp of the present invention, here, a projector provided with a light-emitting lamp 10A.
- This optical system adjusts the emitted light from the illuminating device 100A including the light emitting lamp 100A, the first reflecting mirror 20 and the second reflecting mirror 6, and the illuminating device 100A to predetermined light.
- Illumination optical system 300 having means for performing dichroic mirrors 3 8 2 , 386, a color light separating optical system 380 having a reflecting mirror 384, etc., an entrance lens 392, a relay lens 396, a relay optical system having a reflecting mirror 394, 398.
- a field lens 400, 402, 404 corresponding to each color light a liquid crystal panel 41 OR, 410G, 410B as a light modulator, and a color light combining optical system.
- the cross dichroic prism 420 and the projection lens 600 are provided.
- the operation of the projector having the above configuration will be described. First, light emitted from the rear side of the center of the bulb portion 2 of the light-emitting lamp 10 OA is reflected by the first reflecting mirror 20 and travels forward of the lighting device 10 OA. Also, the light emitted from the front side of the center of the bulb portion 2 is reflected by the second reflecting mirror 6 and returns to the first reflecting mirror 20, and then is reflected by the first reflecting mirror 20 to illuminate the lighting device 10OA. Heading forward.
- the light that has exited the illumination device 100A enters the concave lens 200, where the traveling direction of the light is adjusted to be substantially parallel to the optical axis 1 of the illumination optical system 300, and then an integrator lens is formed. Incident on each of the small lenses 3 2 1 of the first lens array 3 20.
- the first lens array 320 divides the incident light into a plurality of partial light beams corresponding to the number of the small lenses 3221.
- Each partial light beam exiting the first lens array 320 enters a second lens array 340 constituting an integrator lens having a small lens 341 corresponding to each small lens 321. I do.
- the light emitted from the second lens array 340 is collected near the corresponding polarization splitting film (not shown) of the polarization conversion element array 360.
- the light is adjusted by a light shielding plate (not shown) so that, of the light incident on the polarization conversion element array 360, the light is incident only on the portion corresponding to the polarization separation film.
- the polarization conversion element array 360 the light beam incident thereon is converted into the same type of linearly polarized light.
- the plurality of partial luminous fluxes whose polarization directions are aligned by the polarization conversion element array 360 enter the superimposing lens 370, where the respective parts irradiating the liquid crystal panels 410R, 410G and 41OB are irradiated.
- the luminous flux is adjusted to overlap on the corresponding panel surface.
- the color light separation optical system 380 includes first and second dichroic mirrors 382, 386, and separates light emitted from the illumination optical system into three color lights of red, green, and blue. Machine Has the ability.
- the first dichroic mirror 382 transmits the red light component of the light emitted from the superimposing lens 370 and reflects the blue light component and the green light component.
- the red light transmitted through the first dichroic mirror 382 is reflected by the reflecting mirror 384 and reaches the liquid crystal panel 410R for red light through the field lens 400.
- This field lens 400 converts each partial light beam emitted from the superimposing lens 3700 into a light beam parallel to its central axis (principal ray).
- Field lenses 402 and 404 provided in front of the other liquid crystal panels 410G and 410B operate in a similar manner.
- the green light is reflected by the second dichroic mirror 386, passes through the field lens 402, and becomes green light.
- LCD panel 4 1 OG is reached.
- the blue light passes through the second dichroic mirror 386, and the relay optical system 390, that is, the entrance lens 392, the reflection mirror 394, the relay lens 396, and the reflection mirror 3 After passing through 98, the light reaches the liquid crystal panel 410B for blue light through the field lens 404.
- the reason why the relay optical system 390 is used for the blue light is that the optical path length of the blue light is longer than the optical path length of the other color lights, thereby preventing a reduction in light use efficiency due to light divergence and the like. That's why. In other words, this is for transmitting the partial luminous flux incident on the incident side lens 392 to the field lens 404 as it is.
- the relay optical system 390 is configured to transmit blue light among the three color lights, it may be configured to transmit other color light such as red light.
- the three liquid crystal panels 410R, 410G, and 410B modulate the incident light of each color in accordance with given video information to form an image of each color light.
- a polarizing plate is usually provided on the light incident surface side and the light emission surface side of the three liquid crystal panels 41OR, 41OG, and 41OB.
- the three colors of modulated light emitted from the liquid crystal panels 410 R, 410 G, and 10 B serve as a color light combining optical system that combines these modulated lights to form a color image.
- the cross dichroic prism 420 has a dielectric multilayer film that reflects red light, and a dielectric layer that reflects blue light.
- An electric multilayer film is formed in an approximately X-shape at the interface between the four right-angle prisms. These dielectric multilayer films combine the modulated lights of three colors, red, green, and blue, to form a combined light for projecting a color image.
- the combined light combined at 420 enters the projection lens 600, from which it is projected and displayed as a color image on a screen.
- the temperature of the light emitting lamp 1 OA used therein is maintained at an appropriate value, so that the light emitting lamp is prevented from becoming cloudy or black and the quality of the display image of the projector is not deteriorated. Can be suppressed.
- the light emitting lamp of the present invention can be used as a light source for various lighting devices and optical devices. It should be noted that the present invention is not limited to the above embodiment, and can be implemented in various modes without departing from the gist of the present invention, and for example, the following modifications are possible.
- the present invention provides a projector using only one liquid crystal panel, and two projectors.
- the present invention is also applicable to a projector using a liquid crystal panel or a projector using four or more liquid crystal panels.
- a transmissive liquid crystal panel having a different light incident surface and a light exit surface is used.
- a reflective liquid crystal panel having the same light incident surface and light exit surface may be used.
- the liquid crystal panels 41 OR, 410 G, and 410 B were adopted as the light modulation device.
- the present invention is not limited to this, and a device that performs light modulation using a micromirror is used.
- the present invention may be adopted as a light source device for illuminating. In this case, the polarizing plates on the light-incident side and the light-exit side can be omitted.
- the light source device of the present invention is adopted in the projector including the light modulation device.
- the present invention is not limited to this, and the light source device of the present invention may be applied to other optical devices. Good.
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- General Physics & Mathematics (AREA)
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- Electroluminescent Light Sources (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-302476 | 2003-08-27 | ||
JP2003302476A JP2005070589A (ja) | 2003-08-27 | 2003-08-27 | 発光ランプのサイズの決定方法、発光ランプ、並びにその発光ランプを備えた照明装置及びプロジェクタ |
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WO2005022584A1 true WO2005022584A1 (ja) | 2005-03-10 |
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PCT/JP2004/012430 WO2005022584A1 (ja) | 2003-08-27 | 2004-08-23 | 発光ランプ、並びにその発光ランプを備えた照明装置及びプロジェクタ |
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US (1) | US20050082986A1 (ja) |
JP (1) | JP2005070589A (ja) |
CN (1) | CN1830060A (ja) |
WO (1) | WO2005022584A1 (ja) |
Families Citing this family (7)
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JP2005283706A (ja) * | 2004-03-29 | 2005-10-13 | Seiko Epson Corp | ランプ装置及びそれを備えたプロジェクタ |
JP4582036B2 (ja) * | 2006-03-28 | 2010-11-17 | セイコーエプソン株式会社 | 放電灯点灯装置及びプロジェクタ |
US8167438B2 (en) | 2007-12-14 | 2012-05-01 | Seiko Epson Corporation | Light source device, projector, and driving method of discharge lamp |
JP4572940B2 (ja) | 2008-02-19 | 2010-11-04 | セイコーエプソン株式会社 | 放電灯の駆動方法、駆動装置、及びプロジェクタ |
JP4525774B2 (ja) * | 2008-02-27 | 2010-08-18 | セイコーエプソン株式会社 | 放電灯の駆動方法、駆動装置、及びプロジェクタ |
JP4525775B2 (ja) | 2008-02-29 | 2010-08-18 | セイコーエプソン株式会社 | 放電灯の駆動方法、駆動装置、及びプロジェクタ |
JP2012028203A (ja) | 2010-07-26 | 2012-02-09 | Iwasaki Electric Co Ltd | 高圧放電ランプ |
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US5497049A (en) * | 1992-06-23 | 1996-03-05 | U.S. Philips Corporation | High pressure mercury discharge lamp |
US6559600B1 (en) * | 1998-11-17 | 2003-05-06 | Matsushita Electric Industrial Co., Ltd. | Discharge lamp, light source and projecting display unit |
US6307321B1 (en) * | 1999-07-14 | 2001-10-23 | Toshiba Lighting & Technology Corporation | High-pressure discharge lamp and lighting apparatus |
JP4075303B2 (ja) * | 2000-11-01 | 2008-04-16 | セイコーエプソン株式会社 | プロジェクタ |
-
2003
- 2003-08-27 JP JP2003302476A patent/JP2005070589A/ja not_active Withdrawn
-
2004
- 2004-08-19 US US10/921,105 patent/US20050082986A1/en not_active Abandoned
- 2004-08-23 WO PCT/JP2004/012430 patent/WO2005022584A1/ja active Application Filing
- 2004-08-23 CN CNA2004800215328A patent/CN1830060A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05174787A (ja) * | 1991-12-26 | 1993-07-13 | Matsushita Electric Ind Co Ltd | メタルハライドランプ |
JPH0831382A (ja) * | 1994-07-13 | 1996-02-02 | Matsushita Electron Corp | 反射鏡付きメタルハライドランプ |
JPH11149901A (ja) * | 1997-11-18 | 1999-06-02 | Canon Inc | 発光管及びそれを用いた光源装置 |
JPH11191394A (ja) * | 1997-12-25 | 1999-07-13 | Ushio Inc | ショートアーク型水銀ランプ |
Also Published As
Publication number | Publication date |
---|---|
US20050082986A1 (en) | 2005-04-21 |
CN1830060A (zh) | 2006-09-06 |
JP2005070589A (ja) | 2005-03-17 |
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