WO2004104691A1 - 光源装置、光源装置の製造方法、及びプロジェクタ - Google Patents
光源装置、光源装置の製造方法、及びプロジェクタ Download PDFInfo
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- WO2004104691A1 WO2004104691A1 PCT/JP2004/007431 JP2004007431W WO2004104691A1 WO 2004104691 A1 WO2004104691 A1 WO 2004104691A1 JP 2004007431 W JP2004007431 W JP 2004007431W WO 2004104691 A1 WO2004104691 A1 WO 2004104691A1
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- Prior art keywords
- lens
- light source
- positioning member
- light
- parallelizing
- Prior art date
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Classifications
-
- 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
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2026—Gas discharge type light sources, e.g. arcs
-
- 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
- G03B21/2066—Reflectors in illumination beam
Definitions
- Light source device method of manufacturing light source device, and projector
- the present invention relates to a light emitting portion in which discharge light emission is performed between electrodes, a light emitting tube having sealing portions provided on both sides of the light emitting portion, and a light beam emitted from the light emitting tube aligned in a certain direction and emitted.
- a light source device including an elliptical reflector, a parallelizing lens for collimating convergent light of the elliptical reflector, and a projector including the light source device
- the light source device and the projector according to the present invention can be used for multimedia documents at conferences, conferences, exhibitions, etc.
- It can be used as a light source device and a projector for key presentation.
- a discharge type arc tube such as a metal halide lamp or a high-pressure mercury lamp, and an elliptical reflector are housed in a lamp housing or the like, and a collimating lens for collimating the convergent light of the reflector is used.
- a collimating lens for collimating the convergent light of the reflector is used.
- the one with the provided configuration is known. .
- the light source device in recent projectors has been required to fix the parallelizing lens to the lens frame with higher accuracy in assembling the light source device in combination with the miniaturization and higher accuracy. Then, the optical axis of the collimating lens and the optical axis of the lens frame are fixed as much as possible, and the optical axis of the elliptical reflector and the optical axis of the collimating lens are fixed. In order to improve the optical performance of the light source device, it is necessary to prevent a decrease in illuminance caused by the deviation from the above.
- Japanese Patent Application Laid-Open No. 2000-28887 [Claim 15], FIG. 1)
- the means for fixing the lens to the lens frame described in (1) was adopted for assembling the light source device (optical lens unit), and the lens was held or fixed to the lens frame made of thermoplastic resin.
- a technique for incorporating a lens frame into a light source device is known.
- the light source device obtained by this technique includes: a fixed type that holds the lens frame in an immovable state; and a heating unit that receives heat that causes the claw to melt by contacting and separating from the heating unit; and A movable body that moves along the optical axis of the lens, holds the lens surface edge of the lens, and thermally melts the claw to move in the direction of the center line of the optical axis of the lens.
- a movable body that moves along the optical axis of the lens, holds the lens surface edge of the lens, and thermally melts the claw to move in the direction of the center line of the optical axis of the lens.
- the conventional light source device (optical lens unit) is difficult to work because the means for fixing the lens to the lens frame and further to the light source device are complicated and the required parts are complicated in shape. There has been a problem that the manufacturing cost is high. In addition, in order to control the deviation between the optical axis of the built-in elliptical reflector and the optical axis of the collimating lens with high accuracy, there is a problem that it is difficult to perform such adjustment and fixing with the conventional light source device.
- the object of the present invention has been made in view of the above-mentioned problems, and the number of required parts is small, the shape of such parts is not complicated, and the lens is fixed by simple means. As a result, the work efficiency is good, and there is no deviation between the optical axis of the built-in elliptical reflector and the optical axis of the collimating lens, and the use efficiency of light emitted from the arc tube is reduced and light is emitted from the light source device.
- a light source device capable of preventing a decrease in illuminance of a light beam, and a projector using the light source device. It is in.
- the light source device includes: a light emitting tube having a light emitting portion in which discharge light emission is performed between electrodes; and sealing portions provided on both sides of the light emitting portion; and a light emitting tube having a substantially elliptical reflecting surface.
- a light source device comprising: an elliptical reflector that aligns and emits emitted light beams in a certain direction; and a collimating lens that collimates convergent light of the elliptical reflector, wherein the optical axis direction of the elliptical reflector is positioned.
- the lens is positioned and fixed with respect to the lamp housing by the lens positioning member.
- the parallelizing lens is configured such that the optical axis of the elliptical reflector and the optical axis of the parallelizing lens are different. -Since it is adjusted and fixed at the right position, there is no deviation between the optical axis of the elliptical reflector and the optical axis of the lens, and the light beam emitted from the arc tube can be efficiently emitted from the light source device. Accordingly, it is possible to provide a light source device capable of preventing a decrease in illuminance of illumination light.
- the required number of parts is small, the shape of such parts is not complicated, and the lens can be fixed by simple means, so that workability is good.
- the collimating lens is fixed to the lens positioning member by thermal caulking.
- the lens positioning member is formed integrally with the lamp housing.
- the number of parts constituting the light source device can be reduced, and problems such as complicated assembly and a rise in manufacturing cost due to an increase in the number of parts do not occur.
- the lens positioning member is formed integrally with the lamp housing, the optical axis of the elliptical reflector and the axis of the parallelizing lens do not shift, and the light emitted from the arc tube is efficiently used. The light can be emitted well from the light source device, and the illuminance of the light source device can be prevented from lowering.
- the lens fixing portion fixes the parallelized lens by thermal caulking. By doing so, the backlash of the parallelizing lens with respect to the lens positioning member can be suppressed.
- the light flux emitted from the arc tube can be more efficiently emitted from the light source device, and the illuminance of the light source device can be prevented from lowering.
- the parallelizing lens is fixed to the positioning member with an adhesive.
- the parallelizing lens is fixed to the lens positioning member by the adhesive, so that the parallelizing lens has a backlash with respect to the lens positioning member in the same manner as in the case of the fixing by thermal caulking described above.
- the generation of a gap (clearance) between the lens positioning member and the parallelizing lens can be suppressed, and as a result, the displacement of the lens axis is less likely to occur, and the position of the parallelized lens is adjusted.
- the present invention can be implemented even when the lens positioning member is made of a material that cannot be subjected to the above-described thermal shaping, such as a ceramic material or a ceramic material. This is the most suitable means when the positioning member is made of such a material.
- the parallelizing lens is fixed by the simple operation of injecting the adhesive and curing the adhesive, the manufacturing equipment and the manufacturing process can be simplified.
- a flange is formed on an outer periphery of the parallelizing lens.
- the flange is formed on the outer periphery of the parallelizing lens, it is easy to reliably hold the parallelizing lens when adjusting the position of the parallelizing lens, and to position the parallelizing lens.
- the adhesive can be easily injected or applied over the entire circumference of the parallelized lens. Therefore, the position of the parallelizing lens with respect to the lens positioning member can be easily adjusted. It is easy to adjust, and the outer peripheral portion of the parallelizing lens can be easily adhered and fixed.
- the entire outer periphery of the parallelizing lens is adhesively fixed to the lens positioning member.
- the contact portion is formed over the entire outer peripheral surface of the parallelizing lens, and the lens is fixed to the lens positioning member. Therefore, the strength of fixing the parallelizing lens to the lens positioning member can be further enhanced.
- An explosion-proof structure can be realized without unnecessary increase in the number of parts. For example, even if the arc tube ruptures, fragments do not scatter outside, so that explosion-proof measures can be taken.
- the angle of the front end of the flange formed on the outer periphery of the parallelizing lens is preferably an acute angle of 30 degrees or more and 90 degrees or more, and is preferably 30 degrees to 60 degrees. Is more preferred! / ,. '
- the angle of the flange tip formed on the outer periphery of the parallelizing lens is an acute angle of 30 degrees or more and 90 degrees or less, for example, the flange tip of the parallelizing lens is fixed to a predetermined fixing jig.
- the fixing jig is used.
- the claw portion can securely hold the flange, and the claw portion formed on the fixing jig can be prevented from protruding from the inner surface of the flange.
- the inner surface of the fixing jig is fixed to the lens positioning member. Since there is no contact, the adhesive layer of the adhesive can be thinned, and the displacement of the parallelizing lens due to the curing shrinkage of the adhesive can be suitably suppressed.
- the method for manufacturing a light source device includes: a light emitting tube having a light emitting portion in which discharge light emission is performed between electrodes; sealing portions provided on both sides of the light emitting portion; and a substantially elliptical reflecting surface.
- An elliptical reflector that aligns and emits a light beam emitted from the arc tube in a certain direction, a collimating lens that parallelizes convergent light of the elliptical reflector, and a lamp housing that positions an optical axis direction of the elliptical reflector.
- a light source device comprising: a lens positioning member to which the parallelizing lens provided in the lamp housing is fixed. And wherein most of the light radiated from the arc tube is the second light of the elliptical reflector.
- the position of the elliptical reflector is adjusted so that the light is emitted from the elliptical reflector as convergent light converging toward the focal point, and the elliptical reflector is fixed with respect to the arc tube.
- the lamp housing fixed to the lamp housing is fixed to the lamp housing, the collimating lens is fitted into the lens positioning member, emitted from the arc tube, reflected by the elliptical reflector, and reflected by the elliptical reflector. Therefore, the position of the collimating lens is adjusted with respect to the lens positioning member so that the illuminance distribution of the collimated light beam is optimized, and the collimating lens whose position is adjusted with respect to the lens positioning member is adjusted. It is characterized by being fixed to the lens positioning member. ⁇
- the position of the collimating lens with respect to the lens positioning member is adjusted so that the illuminance distribution of the light flux emitted from the arc tube, reflected by the elliptical reflector, and collimated by the collimating lens is optimized; Since the light source device can be fixed, the light source device having the optimum illuminance distribution can be easily and reliably manufactured.
- a flange may be formed on an outer periphery of the parallelizing lens, and the fitting of the parallelizing lens into the lens positioning member may be performed by holding a plunge formed on an outer periphery of the parallelizing lens. Holding the parallelizing lens on the gripping means, fitting the parallelizing lens on the lens positioning member with the parallelizing lens mounted on the gripping means, and holding the parallelizing lens on the lens positioning member. The position of the collimating lens is adjusted by moving the gripping means with respect to the lens positioning member, and the fixing of the collimating lens to the positioning member is performed with respect to the lens positioning member.
- An outer peripheral portion of the parallelizing lens, which is not gripped by the gripping means, is bonded with an adhesive, and the gripping is performed by the parallelizing lens.
- the step is removed, and the outer peripheral portion (the portion gripped by the gripping means) between the outer peripheral portion of the parallelizing lens and the lens positioning member with respect to the lens positioning member is not coated with an adhesive. It is preferable that the lens positioning member is bonded with an adhesive, and the entire outer peripheral portion of the parallelizing lens is bonded and fixed to the lens positioning member.
- the parallelizing lens can be accurately positioned and adjusted with respect to the lens positioning member provided in the lamp housing while the lens is securely mounted, so that the positioning of the parallelizing lens can be performed easily and precisely. . Also, since the entire outer periphery of the parallelizing lens can be easily and reliably adhered and fixed to the lens positioning member, an explosion-proof structure can be realized more suitably.
- the position of the parallelizing lens with respect to the lens positioning member is adjusted in a direction perpendicular to the optical axis direction of the parallelizing lens. It is preferable that the position adjustment of the parallelizing lens with respect to the lens positioning member is performed by adjusting the position of the parallelizing lens in a direction perpendicular to the optical axis direction and in the optical axis direction.
- the optical axis of the elliptical rib collector and the parallelizing lens are adjusted.
- the alignment with the optical axis can be performed with higher accuracy.
- the position adjustment of the collimating lens with respect to the lens positioning member is performed in the optical axis direction in addition to the position adjustment of the collimating lens in the direction perpendicular to the optical axis direction. It is possible to make the alignment of the optical axis of the reflector with the optical axis of the collimating lens with even higher accuracy, and to ensure that the converged light emitted from the elliptical reflector is incident on the collimating lens. it can. Therefore, the light flux emitted from the light emitting tube can be more efficiently emitted from the light source device, and the illuminance of the light flux emitted from the light source device can be improved.
- a projector according to the present invention is a projector that forms an optical image by modulating a light beam emitted from a light source according to image information, and performs enlarged projection.
- the projector includes the light source device described above.
- Another projector according to the present invention is a projector that modulates a light beam emitted from a light source according to image information to form an optical image, and performs enlarged projection.
- the projector is manufactured by the above-described method of manufacturing a light source device. It is characterized by having a light source device.
- the present invention it is possible to configure a projector that enjoys the same functions and effects as described above.
- the light source device having such a configuration can be easily miniaturized, the Can promote miniaturization of the
- FIG. 1 is a schematic diagram illustrating a structure of an optical system of a projector according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view illustrating a structure of the light source device according to the first embodiment of the present invention.
- FIG. 3 is a schematic diagram for explaining an operation of emitting light from the light source device according to the embodiment of the present invention.
- FIG. 4 is a schematic diagram showing a fixing device for performing thermal shrinking in the first embodiment of the present invention. ⁇
- FIG. 5 is a schematic diagram illustrating a procedure for performing thermal shrinking in the first embodiment of the present invention.
- FIG. 6 is a cross-sectional view illustrating a structure of a light source device according to a second embodiment of the crane of the present invention.
- FIG. 7 is a schematic diagram of a lens fixing unit that constitutes a second embodiment of the present invention.
- FIG. 8 is a schematic diagram showing a fixing device for performing thermal caulking in the second embodiment of the present invention.
- FIG. 9 is a schematic diagram showing a procedure for performing thermal caulking in the second embodiment of the present invention.
- FIG. 6 is a cross-sectional view illustrating a structure of a light source device according to a third embodiment of the present invention.
- FIG. 11 is a sectional view showing a structure of a light source device according to another aspect of the third embodiment of the present invention.
- FIG. 12 is a cross-sectional view illustrating a structure of a light source device according to a fourth embodiment of the present invention.
- FIG. 13 is a schematic view ((A) a perspective view, and (B) is a cross-sectional view taken along XII I-XIII) showing a parallelizing lens constituting a light source device according to a fourth embodiment of the present invention.
- FIG. 14 is a cross-sectional view showing a state where the parallelizing lens is mounted on the fixing jig in the fourth embodiment of the present invention.
- FIG. 15 is a schematic diagram showing a relationship between a claw portion formed on a fixing jig and an angle of a front end portion of a flange of a parallelizing lens in a fourth embodiment of the present invention.
- FIG. 16 shows a comparison with the tip of the claw formed on the fixing jig according to the fourth embodiment of the present invention.
- the schematic diagram which shows the aspect of the fixing jig performed.
- FIG. 17 is a schematic diagram showing a procedure for attaching a parallelizing lens to a lens fixing part in the fourth embodiment of the present invention.
- FIG. 18 is a cross-sectional view showing a state in which a parallelizing lens mounted on a fixing jig is fitted into a lens fixing portion in a fourth embodiment of the present invention.
- FIG. 19 is a schematic view showing a fixing device according to a fifth embodiment of the present invention.
- FIG. 1 is a schematic diagram illustrating an optical system of a projector 1 according to a first embodiment of the present invention.
- the projector 1 modulates a light beam emitted from a light source according to image information to generate an optical image.
- the light source lamp unit 10 as a light source device, the uniform illumination optical system 20, the color separation optical system 30, the relay optical system 35, and the optical
- the optical element which comprises the device 40 and the projection optical system 80, and configures the optical systems 20 to 35, is positioned in the optical component housing 2 on which the predetermined reference axis A is set. Adjusted and stored.
- the light source lamp unit 10 illuminates the optical device 40 by aligning and emitting light beams emitted from the light source lamp 11 in a certain direction, and as described in detail later, the light source lamp 11 and the elliptical reflector 12; a sub-reflector 13; and a collimating lens (parallelizing concave lens) 14.
- the luminous flux emitted from the light source lamp 11 is emitted as convergent light by aligning the emission direction to the front side by the elliptical reflector 12, is collimated by the collimating lens 14, and becomes uniform illumination optical system 20. Injected into.
- the uniform illumination optical system 20 is an optical system that divides a light beam emitted from the light source lamp unit 10 into a plurality of partial light beams and equalizes the in-plane illuminance of the illumination area.
- the first lens array 21 A second lens array 22, a polarization conversion element 23, a superposition lens 24, and a reflection mirror 25.
- the first lens array 21 has a function as a light beam splitting optical element that splits the light beam emitted from the light source lamp 11 into a plurality of partial light beams, and is located in a plane orthogonal to the reference axis A. It is composed of a plurality of small lenses arranged in a matrix.
- the outline shape of each small lens is the same as that of the liquid crystal panels 42 R, 42 G, and 42 B constituting the optical device 40 described later.
- the shape is set to be substantially similar to the shape of the image forming area.
- the second lens array 22 is an optical element for condensing a plurality of partial luminous fluxes divided by the first lens array 21 together with the superimposing lens 24, and is orthogonal to the reference axis A similarly to the first lens array 21. It has a plurality of small lenses that are arranged in a matrix in a plane to be focused, but because of the purpose of condensing, the contour shape of each small lens has an LCD panel 42R, 42G, 4 It does not need to correspond to the shape of the 2B image forming area.
- the polarization conversion element 23 is a polarization conversion element that aligns the polarization direction of each partial light beam split by the first lens array 21 to linear polarization in one direction.
- the deflection conversion element 23 has a configuration in which polarization separation films and reflection mirrors that are arranged obliquely with respect to the reference axis A are alternately arranged.
- the polarization separating film transmits one of the P-polarized light and the S-polarized light included in each partial light and reflects the other polarized light.
- the other polarized light beam reflected is bent by the reflection mirror, and is emitted in the emission direction of the one polarized light beam, that is, in the direction along the reference axis A.
- Either of the emitted polarized light beams is subjected to polarization conversion by a phase difference plate provided on the light beam exit surface of the deflection conversion element 23, and the polarization directions of all polarized light beams are aligned.
- a deflection conversion element 23 By using such a deflection conversion element 23, the light beam emitted from the light source lamp 11 can be made uniform in one direction, so that the utilization rate of the light source light used in the optical device 40 can be reduced. Can be improved.
- the superimposing lens 24 condenses a plurality of partial light beams that have passed through the first lens array 21, the second lens array 22, and the deflection conversion element 23, and forms the liquid crystal panels 42 R, 42 G, and 42 B.
- the superimposing lens 24 is a spherical lens having a flat light-transmitting area on the incident-side end face and a spherical output-side end face, but it is also possible to use an aspherical lens.
- the light beam emitted from the superimposing lens 24 is bent by the reflection mirror 25 and emitted to the color separation optical system 30.
- the color separation optical system 30 is composed of two dichroic mirrors 31 and 3 and a reflection mirror.
- a plurality of partial luminous fluxes emitted from the uniform illumination optical system 20 from the dichroic mirrors 31 and 3 are divided into three colors of red (R), green (G) and blue (B). It has the function of separating into color light.
- the dichroic mirrors 31 and 32 are optical elements formed on a substrate with a wavelength selection film that reflects light beams in a predetermined wavelength region and transmits light beams of other wavelengths.
- the Reutsk mirror 31 is a mirror that transmits red light and reflects other color lights.
- the dichroic mirror 32 disposed downstream of the optical path is a mirror that reflects green light and transmits blue light.
- the relay optical system 35 includes an entrance lens 36, a relay lens 38, and reflection mirrors 37, 39, and the blue light transmitted through the dichroic mirror 32 constituting the color separation optical system 30. To the optical device 40.
- the reason why such a relay optical system 35 is provided in the optical path of the blue light is that the optical path length of the blue light is longer than the optical path lengths of the other color lights, so that the light use efficiency due to the divergence of the light is reduced. This is to prevent the drop.
- the configuration is such that the optical path length of blue light is long, but a configuration in which the optical path length of red light is increased is also conceivable.
- the red light separated by the dichroic mirror 31 described above is bent by the reflection mirror 33, and then supplied to the optical device 40 via the field lens 41.
- the green light separated by the dichroic mirror 32 is supplied as it is to the optical device 40 via the built-in lens 41.
- the blue light is condensed and bent by the lenses 36 and 38 and the reflection mirrors 37 and 39 constituting the relay optical system 35, and is bent through the field and the lens 41 to form the optical device 40.
- Supplied to The field lens 41 provided before the optical path of each color light of the optical device 40 converts each partial light beam emitted from the second lens array 22 into a light beam parallel to the reference axis A. It is provided in.
- the optical device 40 modulates the incident light beam according to image information to form a color image.
- the liquid crystal panel 42 as a light modulation device to be illuminated, and the cross dichroic light as a color combining optical system. It is configured to include an it prism 43.
- An incident side polarizing plate 44 is interposed between the field lens 41 and each liquid crystal panel 42R, 42G, 42B.
- each liquid crystal panel 42R , 42G, An exit-side polarizing plate is interposed between 42B and the cross dichroic prism 43, and the entrance-side polarizing plate 44, the liquid crystal panels 42R, 42G, 42B, and the exit side
- the polarization of each color light is modulated by the polarizer.
- the liquid crystal panels 42 R, 42 G, and 42 B are made of a pair of transparent glass substrates in which liquid crystal, which is an electro-optical material, is hermetically sealed.
- liquid crystal which is an electro-optical material
- a polysilicon TFT is provided as a switching element.
- the polarization direction of the luminous flux emitted from the incident side polarizing plate 44 is modulated according to the image signal.
- the image forming area for modulating the liquid crystal panels 42 R, 42 G, and 42 B is rectangular, and has a diagonal dimension of, for example, 0.7 inch.
- the cross dichroic prism 43 is an optical element that forms a color image by synthesizing an optical image modulated for each color light emitted from the emission-side polarizing plate.
- the cross dichroic breath 43 has a substantially square shape in plan view in which four right-angle prisms are bonded together, and a dielectric multilayer film is formed on an interface where the right-angle prisms are bonded together.
- One of the substantially X-shaped dielectric multilayer films reflects red light, and the other dielectric multilayer film reflects blue light. These dielectric multilayer films reflect red light and blue light. The light is bent and aligned with the traveling direction of the green light, so that the three color lights are combined.
- the color image emitted from the cross dichroic prism 43 is enlarged and projected by the projection optical system 80 to form a large screen image on a screen (not shown).
- the light source lamp unit 10 as the light source device described above is shown in FIG. 2 in addition to the light source lamp 11 described above, the elliptical reflector 12, the sub-reflector 13, and the parallelizing lens (parallelizing concave lens) 14. As described above, the lens positioning member 16 having the lamp housing 15 and the lens fixing portion 17 is provided.
- the light source lamp 11 as a light emitting tube is composed of a quartz glass tube whose central portion bulges into a sphere, the central portion is a light emitting portion 111, and the portions extending on both sides of the light emitting portion 111 are sealing portions 1. 1 and 2.
- the light emitting unit 1 1 Although not shown in FIG. 2 inside the light emitting unit 1 1 1, it is located at a predetermined distance inside. A pair of tungsten electrodes, and mercury, a rare gas, and a small amount of halogen are sealed.
- a metal foil made of molybdenum that is electrically connected to the electrode of the light emitting unit 111 is inserted into the inside of the sealing unit 112 and sealed with a glass material or the like.
- a lead wire 113 as an electrode lead wire is further connected to this metal foil, and the lead wire 113 extends to the outside of the light source lamp 11.
- the elliptical reflector 12 includes a neck 12 1 through which the sealing portion 1 12 of the light source lamp 11 passes, and an elliptical curved reflecting portion 1 2 2 extending from the neck 1 2 1. It is an integrally molded product made of glass. '
- An insertion hole 1 23 is formed in the center of the neck portion 1 2 1, and a heat radiating portion 1 1 4 having an interposition portion 1 24 and a bush 1 1 5 is provided at the center of the insertion hole 1 2 3.
- the sealing portion 1 1 and 2 are arranged via the sealing portion.
- the reflecting portion 122 is formed by depositing a metal thin film on an elliptical curved glass surface, and the reflecting surface of the reflecting portion 122 is a cold mirror that reflects visible light and transmits infrared light. You.
- a sealing portion 125 made of glass or the like is provided in the optical axis direction of the elliptical reflector 12 so that the elliptical reflector 12 is sealed.
- the light source lamp 11 is disposed inside the reflecting portion 122, and the light emitting center between the electrodes in the light emitting portion 111 is an elliptical curved surface having a reflection surface 122. It is arranged to be at one focal point L 1.
- the heat radiating part 114 and the sealing part 112 of the light source lamp 111 ′ are connected to the elliptical reflector. Insert the insertion hole 1 2 3 into the insertion hole 1 2 3 so that the emission center between the electrodes in the light emission section 1 11 1 is the focal point of the elliptical curved surface of the reflection section 1 2 2.
- Sili forceAlumina Is filled with an inorganic adhesive mainly composed of In this example, the lead wire 113 coming out of the front sealing part 112 is also exposed to the outside through the insertion hole 123.
- the dimension of the reflecting portion 122 in the direction of the optical axis is shorter than the length of the light source lamp 111.
- the sub-reflecting mirror 13 is a reflecting member that covers substantially half of the light-emitting portion 11 of the light source lamp 11 on the front side and is not shown in the figure, but its reflecting surface follows the spherical surface of the light-emitting portion 111.
- the sub-reflection mirror 13 is mounted on the light-emitting part 111, and is formed as a concave curved surface, and the reflection surface is a cold mirror like the elliptical reflector 12.
- the light beam emitted to the front side of 1 1 1 is reflected by the sub-reflector 13 to the light-emitting portion 11 1, and the light beam reflected by the sub-reflector 13 enters the elliptical reflector 12 Then, the light is converged on the second focal position L 2 of the elliptical reflector 12 by the reflecting portion 122 of the elliptical reflector 12.
- a light beam radiated toward the optical axis front side of the light emitting unit 111 and unable to directly enter the elliptical reflector 12 by the sub-reflector 13 is Since the light is reflected toward the reflecting portion 1 2 2 of the elliptical reflector 1 2, even if the reflecting portion 1 2 2 has a small elliptical curved surface on the front side in the optical axis direction, most of the light emitted from the light emitting portion 1 1 1 1 The beam can be emitted in a certain direction as converged light converging toward the second focal point of the elliptical reflector 12, and the dimension of the elliptical reflector 12 in the optical axis direction can be reduced.
- the lamp housing 15 is an integrally molded product made of a synthetic resin having an L-shaped cross section, and has a horizontal portion 15 1 and a vertical portion 15 2.
- the horizontal portion 15 1 is a portion that engages with the wall of the optical component housing 2 and conceals the light source lamp unit 10 inside the optical component housing 2 to prevent light leakage. Although not shown, the horizontal portion 15 1 is provided with a terminal block for electrically connecting the light source lamp 11 to an external power supply. No Lead lines 1 1 and 3 are connected.
- the vertical portion 15 2 is a portion for positioning the optical axis V of the elliptical reflector 12 on the predetermined reference axis A and for positioning the elliptical reflector 12 in the optical axis direction.
- the end of the elliptical reflector 12 on the side of the light beam exit opening is fixed with an adhesive or the like.
- the vertical portion 152 has an opening 153 for transmitting the light beam emitted from the elliptical reflector 122.
- a protrusion 154 is formed on such a horizontal portion 15 1 and a vertical portion 15 2.
- the lens positioning member 16 is integrated with the lamp housing 15 and a parallel portion 16 1 formed by extending the horizontal portion 15 1 of the lamp housing 15. And a vertical part 16 2 formed in a direction perpendicular to the substantially distal end of the parallel part 16 1, and a lens fixing part 17 formed at the distal end 16 3 of the vertical part 16 2
- the lamp housing 15 and the lamp housing 15 are integrally formed of a synthetic resin.
- the lens fixing portion 17 formed on the lens positioning member 16 is composed of a cylindrical portion protruding from the tip 16 3 of the vertical portion 16 2 of the lens positioning member 16.
- the collimating lens 14 for collimating the convergent light of the elliptical reflector 12 is attached to the cylindrical portion.
- the optical axis W of the parallelizing lens 14 fixed to the fixed part 17 coincides with the extension of the optical axis V of the elliptical reflector 12.
- the fixing of the parallelizing lens to the lens fixing portion 17 in the present embodiment is performed by, as shown in FIGS. 2 and 3, the light incident side of the parallelizing lens 14 is connected to the lens support surface 1 of the lens fixing portion 17.
- the position in the optical axis direction is defined by 7 7, and the exit side (the arrow side in FIG. 2) of the collimating lens 14 is set by the thermal force crimping section 17 1 formed on the lens exit side of the lens fixing section 17. It is positioned and fixed by heat caulking.
- the configuration of the fixing device 50 for fixing the collimating lens 14 to the lens positioning member 16 including the lens fixing portion 17 will be described.
- the fixing device 5 ⁇ shown in FIG. 4 mainly includes an alignment 51 for positioning the collimating lens 14, a thermal shearing machine 52, and a lens positioning section for fixing the collimating lens 14.
- the alignment 51 includes a holder 56 for holding 16 and a light beam detector 53 for detecting a light beam emitted from the light source lamp unit 10 disposed in the fixing device 50. As shown in Fig.
- the thermal power shrinking machine 52 has a built-in heater as a heating means.
- the thermal power shrinking machine 52 descends and presses the thermal power crimping portion 17 1 of the lens fixing portion 17 to heat and pressurize, so that the thermal power shrinking machine 52 is heated.
- the portion 17 1 is caulked against the collimating lens 14 to fix the collimating lens 14 to the lens fixing portion 1.
- the light beam detecting device 53 is disposed in the optical axis direction of the light source lamp unit 10 arranged in the fixing device 50 shown in FIG. 4, and the light source lamp unit 1 arranged in the fixing device 50 is arranged.
- the camera is equipped with a CCD (Charged-Coupled Device) camera that captures the light beam emitted from zero.
- CCD Charge-Coupled Device
- a method for manufacturing the light source lamp unit 10 including a method for fixing the parallelizing lens 14 to the lens positioning member 16 including the lens fixing portion 17 using the fixing device 50 will be described below. . ⁇
- the light source lamp 1 1 is such that most of the light emitted from the light source lamp 1 1 is emitted from the elliptical reflector 1 2 as convergent light converged toward the second focal point of the elliptical reflector 1 2.
- the elliptical reflector 12 and the sub-reflector 13 adjusted in position with respect to are fixed to the light source lamp 11.
- the elliptical reflector 12 including the light source lamp 11 and the sub-reflector 13 is fixed to the vertical portion 15 2 of the lamp housing 15.
- the parallelizing lens 14 is fitted into the lens fixing portion 17 of the lens positioning member 16 so as to contact the lens support surface 17 7 of the lens positioning portion 16.
- the pin 54 of the alignment 51 is brought into contact with the collimating lens 14 in accordance with the information of the image data captured by the CCD camera of the light beam detector 53, and the illuminance distribution is obtained.
- the positioning is adjusted by finely moving the parallelizing lens 14 in the direction perpendicular to the optical axis direction of the parallelizing lens 14 so as to be optimal.
- FIG. 5 schematically shows a state in which thermal caulking is performed by lowering, heating and pressurizing the thermal caulking machine 52, and only a portion of the lens fixing portion 17 that presses the thermal caulking portion 171,
- the thermal caulking machine 52 (only the part that presses the thermal power caulking part 17 1 of the lens fixing part 17) is lowered with respect to the lens fixing part 17 where the parallelizing lens 14 is positioned and adjusted.
- 5 (A)) by heating and pressurizing the heat-shrink portion 171, the tip 172 of the heat-shrink portion 17 1 covers the collimating lens 14 and is subjected to heat-shrink
- FIG. 5B the parallelizing lens 14 is fixed in a state where the positioning is adjusted with respect to the lens fixing portion 17 of the lens positioning member 16 provided in the lamp housing 15.
- Such a light source lamp unit 10 is stored in the optical component housing 2 of the projector 1 described above. According to the above-described first embodiment, the following effects can be obtained.
- the lamp housing 15 provided with a vertical portion 15 2 for positioning the optical axis direction of the elliptical reflector 12 and the lens fixing portion 17 of the lens positioning member 16 provided together Since the position of the lens 14 is adjusted and fixed, the optical axis V of the elliptical reflector 12 and the optical axis W of the collimating lens 14 are aligned and fixed, and the elliptical reflector is fixed.
- a light source lamp capable of preventing a decrease in the illuminance of the light beam emitted from the light source lamp unit 10 without causing a shift between the optical axis V of the light source V and the optical axis W of the collimating lens 14.
- Unit (light source device) 10 can be provided. .
- the required number of parts is small, the shape of the parts is not complicated, and the parallelizing lens 14 can be fixed by simple means, so that workability is also good. . ,
- the position of the collimating lens 14 in the direction of the optical axis is defined by the support surface 1777 of the lens fixing portion 17, and the position of the parallelizing lens 14 in the direction perpendicular to the direction of the optical axis is aligned.
- (D) A simple configuration in which a thermal force portion 17 1 is provided on the lens fixing portion 17, and the thermal force portion 17 1 is thermally caulked against the parallelized lens 14 by a thermal force machine 52 and heat-pressed.
- the collimating lens 14 is fixed by simple operations, the number of required parts is small, the shape of the part does not become complicated, and the parallelizing lens 14 is fixed by simple means. As a result, the manufacturing equipment and the manufacturing process can be simplified, and workability can be improved.
- the lens positioning member 16 is formed integrally with the lamp housing 15 Therefore, the number of parts constituting the light source lamp unit (light source device) 10 can be reduced, and problems such as complicated assembly and a rise in manufacturing cost due to an increase in the number of parts do not occur.
- the lens positioning member 16 is formed integrally with the lamp housing 15, the optical axis V of the elliptical reflector 12 and the axis of the parallelizing lens 14 are less likely to be displaced. It is possible to prevent the illuminance of the lamp unit 10 from decreasing. '
- the information of the illuminance distribution of the light beam parallelized by the parallelizing lens 14 is detected by the light beam detector 53 so that the illuminance distribution of the light beam parallelized by the parallelizing lens 14 is optimized. Since the position of the parallelizing lens 14 with respect to the lens fixing portion 17 of the lens positioning member 16 is adjusted, it is possible to manufacture the light source lamp unit 10 that emits a light beam having an optimal illuminance distribution.
- the projector 1 By adopting the light source lamp unit 10 for the projector 1, the projector 1 having the same effects as the above (A) to (F) can be configured, and the brightness of the projected image can be improved. In addition, the reliability of the projector 1 can be improved. In addition, since the projector 1 is provided with the sub-reflected light 13 and the downsized light source lamp unit 10, the size of the light source can be reduced. Therefore, the size of the entire projector 1 can be reduced.
- the whole of the lamp housing 15 and the lens positioning member 16 is made of a synthetic resin integrally molded product.
- FIG. 6 shows a cross-sectional view of the light source lamp unit 10a according to the second embodiment.
- the light source lamp unit 10a is formed by connecting a lens fixing portion 17a of a cylindrical member to a vertical portion 162 of a vertical portion 162 of a lens positioning member 16a.
- the light exit side and light entrance side of 4 are formed in the lens fixing part 17a.
- the difference is that heat is caulked by the formed thermal power caulking part 17 1 a.
- the lens fixing portion 17a of the cylindrical member may be integrally formed with the lens positioning member 16a.
- FIG. 7 shows a schematic diagram of the lens fixing portion 17a in the present embodiment (FIG. 7 (A) is a perspective view, and FIG. 7 (B) is a side view).
- the lens fixing portion 17a in the present embodiment is formed of a cylindrical member, and a long rectangular hole 176 is provided in the side portion 175.
- Four holes 176 are provided in the upper and lower two rows in a row, two at a time.
- a set of four holes 176 is provided at the center of the opening 174 of the lens fixing part 177a.
- it is provided at a total of four locations at 90-degree intervals. It is to be noted that a group of four holes 176 may be provided at two, three, or five or more locations.
- the X portion in FIG. 7 (B) is cut, and the Y portion is inserted into the lens fixing portion 17a with the Y portion as a fulcrum of bending. As a result, a thermal-powered crimp portion 17 1 a is formed.
- a fixing device 60 for fixing the collimating lens 14 to the lens positioning member 16a having the lens fixing portion 17a will be described.
- the fixing device 60 has, as main components, a thermal caulking machine 52 a and an alignment (not shown) for positioning the collimating lens 14.
- a holder 56 (not shown) for holding a lens positioning portion 16a to which the parallelizing lens 14 is fixed is provided.
- a CCD camera of the light beam detecting device 53 is installed in the optical axis direction of the collimating lens 14 of the light source lamp unit 10a. .
- the thermal shearing machine 52a is provided on the left and right sides of the lens fixing part 17a, as shown in FIG. Then, the heated thermomechanical shearing machine 52a approaches the left and right in the direction of the arrow in the figure, and the lens fixing part 17a can be heated and pressed from the side.
- four alignments in the present embodiment are arranged at 90-degree intervals with respect to the center of the lens fixing portion 17a, and are provided at the distal end by a built-in air cylinder. You can adjust the pin and fix the lens By bringing the collimating lens 14 into and out of contact with the collimating lens 14 through the hole provided in the portion 17a, the position of the collimating lens 14 in the direction perpendicular to the light source direction and in the light source direction is adjusted. be able to.
- the alignment pin (not shown) is finely moved with respect to the collimating lens 14 in accordance with the information of the image data captured by the CCD camera of the light beam detector 53 to optimize the illuminance distribution. Position and adjust the collimating lens 14 in the direction perpendicular to the optical axis direction of the collimating lens 14 and in the optical axis direction so as to be as close as possible.
- Fig. 9 (A) is a schematic diagram showing the lens fixing part 17a and the collimating lens 14 before thermal caulking. It is a schematic view, in which a parallelizing lens 14 is fitted inside a lens fixing portion 17a.
- a thermal power crimping machine 52a with a sharp tip is shown (only the part pressing the thermal power crimping part 171a of the lens fixing part 17a is shown). Is provided.
- FIG. 9 (B) is a schematic diagram showing the state of thermal shrinkage.
- the heated caulking machine 5 2 provided on the left and right sides of the lens fixing part 17 a 2 a approach the left and right in the direction of the arrow in FIG. 9B, and press the lens fixing portion 17a by heating from the side.
- the X section shown in FIG. 7 (B) is cut off by the heat pressing of the thermal shearing machine 52a, and the Y section in FIG. 7B becomes a fulcrum of bending, and the Z section in FIG.
- the line portion) forms the thermal force portion 17 1 a and enters the inside of the lens fixing portion 17 a, and the tip of the thermal force portion 17 1 a becomes the tip portion 17 2 a and the parallelized lens 1
- the thermal fixation over the top 4 causes the parallelizing lens 14 to be positioned and fixed to the lens fixing section 17a (Fig. 9 (B)).
- the alignment pins are not shown in FIGS. 9 (A) and 9 (B), until the parallelizing lens 14 is fixed to the lens fixing portion 17a by thermal caulking.
- the parallelizing lens 14 is held at the adjusted position.
- the position of the collimating lens 14 is adjusted not only in the direction perpendicular to the optical axis direction of the collimating lens 14 but also in the optical axis direction of the collimating lens 14. Therefore, the optical axis V of the elliptical reflector 12 and the optical axis W of the collimating lens 14 can be matched with higher accuracy, and the convergence emitted from the elliptical reflector 12 can be achieved.
- Light can be reliably incident on the collimating lens 14. Therefore, the light beam emitted from the light source lamp 11 can be more efficiently emitted from the light source lamp unit 10a, and the illuminance of the light beam emitted from the light source lamp unit 10a can be improved. it can.
- the mode in which the parallelizing lens 14 is fixed to the lens fixing portions 17 and 17a by thermal caulking has been described.
- the light source lamp unit 10b according to the third embodiment has a side surface of the collimating lens 14 with respect to the inner surface portion 1773b of the lens fixing portion 17b. The difference is that the part 14 41 is fixed by an adhesive.
- the lens fixing portion 17b of the lens positioning member 16b and the lamp housing 15 are integrally formed. .
- the adhesive is present between the side surface portion 14 1 of the collimating lens 14 and the inner surface portion 17 3 b of the lens fixing portion 17 b to form an adhesive portion 70, and the adhesive is formed.
- the agent is cured, the parallelizing lens 14 and the lens fixing portion 17 are fixedly integrated.
- the adhesive used and the bonding means are not particularly limited.For example, if necessary, temporarily fix using a silicone-based heat-resistant UV-curable adhesive having a melting point of 150 ° C to 200 ° C. After that, a permanent fixing method using a silicone or epoxy heat resistant adhesive having a melting point of 250 ° C. to 350 ° C. can be used.
- FIG. 11 employs a lens positioning member 16 c which is also a heat conductive cover member instead of the lens positioning member 16 b of the light source lamp unit 10 b of FIG. 10 described above.
- FIG. 11 employs a lens positioning member 16 c which is also a heat conductive cover member instead of the lens positioning member 16 b of the light source lamp unit 10 b of FIG. 10 described above.
- the lens positioning member 16 c is a heat absorbing part 16 formed of a substantially conical cylindrical body mounted on the opening part 15 3 of the vertical part 15 2 of the lamp housing 15. 4, a plurality of radiating fins 165 protruding outside the heat absorbing portion 164, and a lens fixing portion 17c formed at the tip of the heat absorbing portion 164. It is configured as a one-piece molded product.
- the heat absorbing portion 16 4 is a portion that absorbs radiant heat radiated from the light source lamp 11 and heat of air convected in the sealed space in the elliptical reflector 12 and the lens positioning member 16 c. Is black anodized.
- the substantially conical inclined surface of the heat absorbing portion 16 4 is parallel to the inclination of the convergent light by the elliptical reflector 12.
- the light emitted from the elliptical reflector 12 is made so as not to come in contact with the surface of the heat absorbing portion 164 as much as possible. '
- the plurality of radiating fins 165 are configured as plate-like members extending in a direction perpendicular to the optical axis of the light source lamp unit 10c, and between the radiating fins 165, sufficient cooling air can be passed. A possible gap is formed.
- the lens fixing portion 17c is provided with a collimating lens 14 in the same direction as the light source lamp unit 10b shown in FIG. 10 in the direction perpendicular to the optical axis direction of the collimating lens 14 and the optical axis. After fine-moving in the direction and adjusting the position, an adhesive portion 70 is formed between the side surface portion 141 of the collimating lens 14 and the inner surface portion 173c of the lens fixing portion 17c. As a result, the parallelizing lens 14 and the lens fixing portion 17c are fixedly integrated.
- the light source lamp unit 10 As described above, by fixing the parallelizing lens 14 to the lens positioning member 16 c attached to the opening 15 3 of the vertical portion 15 2 of the lamp housing 15, the light source lamp unit 10
- the explosion-proof structure c can be formed so that there is no opening and the fragments do not scatter outside the light source lamp unit 10c when the light source lamp 11 ruptures.
- the light source lamp unit 10c first turn on the power of the projector 1 and make the light source lamp 11 emit light. As a result, white light is emitted and infrared light and radiant heat are emitted from the light source lamp 11. Radiated. At this time, the cooling fan inside the projector 1 is also started to start cooling the radiation fins 165.
- the infrared light emitted to the front side of the light source lamp 11 passes through the sub-reflector 13 and is absorbed by the heat absorbing portion 1664 of the lens positioning member 16c.
- the air heated by the radiant heat generates convection inside, and the heated air exchanges heat on the inner surface side of the heat absorbing portion 164 of the lens positioning member 16c, and the heat is absorbed and cooled. .
- the heat absorbed by the heat absorbing section 164 is conducted to the heat radiating fins 165 and exchanges heat with the cooling air from the cooling fan to cool the heat radiating fins 165.
- the lens positioning member 16b having the lens fixing portion 17b or the lens fixing portion 1b is provided in the light source lamp unit 10b shown in FIG. 10 or the light source lamp unit 10c shown in FIG. 11, the lens positioning member 16b having the lens fixing portion 17b or the lens fixing portion 1b is provided.
- the fixing device for fixing the collimating lens 14 to the lens positioning member 16c provided with 7c is a heat-casing device of the fixing device 60 shown in FIG.
- a fixing device provided with an adhesive injection machine may be used in place of the machine 5.2a.
- the lens positioning member 16 b having the lens fixing portion 17 b or the lens positioning member 16 c having the lens fixing portion 17 c is collimated into the lens 14.
- a method for manufacturing the light source lamp unit 10b or 10c having a method for fixing the () will be described below.
- the light source lamp The elliptical reflector 12 that is positioned and fixed with the sub-reflector 13 with respect to 11 is fixed to the lamp housing 15, and the lens positioning part 16 b provided in the lamp housing 15 is placed on the holder.
- the collimating lens 14 is held inside the lens fixing part 17b or 17c, and the illuminance distribution of the light beam collimated by the collimating lens 14 in the light beam detector 53 is converted into image data.
- the bonding portion 70 is formed by injection and curing, and the parallelized lens 14 and the lens fixing portion 17b or 17c are fixed and integrated.
- an adhesive is injected from an injection hole provided in the lens fixing portion 17b or 17c, or the lens fixing portion 17b or 17c is used.
- Various means such as inserting an injection tube between the inner surface portion 173b and the side surface portion 141 of the collimating lens 14 and injecting an adhesive can be used.
- the inner surface 17 3 b or 17 3 b of the lens fixing portion 17 b is fixed to the lens fixing portion 17 b or 17 c by fixing the side surface portion 14 4 1 of the collimating lens 14 with an adhesive.
- the backlash of 14 can be suppressed, and as a result, the axial center of the collimating lens 14 is less likely to shift.
- the lens 14 can be fixed with high accuracy. Therefore, it is possible to prevent the illuminance of the light source lamp unit 1Ob or 10c from decreasing.
- the lens fixing portion 17b or 17c is made of a material, such as a metal material or ceramics, that cannot be subjected to the thermal caulking of the above-described embodiment. Since the lens fixing portion 17b or 17c is made of such a material, it is optimal as a means when the lens fixing portion 17b or 17c is formed of such a material.
- the light source lamp unit 10c includes the lens positioning member 16c made of a metal having good heat conductivity, the radiant heat generated by the light source lamp 11 is absorbed by the heat absorbing portion. It is possible to absorb by the 164 and discharge it from the radiating fins 165, eliminating the need for forming an opening for introducing cooling air in the elliptical reflector as in the conventional case.
- a fourth embodiment of the present invention will be described. As in the description of the second embodiment and the third embodiment, the same reference numerals are given to the same components as those already described, and the description thereof will be omitted.
- the parallelizing lens 14 bonded and fixed to the lens fixing portion 17b or the lens fixing portion 17c with an adhesive has a substantially cylindrical shape, and is provided on the outer periphery thereof. No particular member was formed.
- the collimating lens 14a according to the fourth embodiment has a substantially cylindrical shape, as shown in FIG. 12, but has a flange 142 formed on the outer periphery. Are different.
- FIG. 12 shows a cross-sectional view of the light source lamp unit 10d of the present embodiment including the collimating lens 14a.
- the lens positioning member 16 d is attached to the vertical portion 1 of the lamp housing 15. 5 2 Opening 1 5 3 Side face 16 1 d consisting of a substantially cylindrical cylinder extending from 3 3, and side face 16 1 d Vertical section formed perpendicular to the approximate end of 16 1 d d, and the lens fixing portion 16 3 d at the tip of the vertical portion 16 2 d fixes the collimating lens 14 a.
- the lens positioning member .16 d is provided so as to cover the light source lamp 11 (arc tube).
- the parallelizing lens 14a is positioned and fixed with the adhesive to the tip 163b of the lens positioning member 16b, the light source lamp cut 10d is opened.
- An explosion-proof structure can be formed so that when the light source lamp 11 ruptures without any damage, the fragments do not scatter outside the light source lamp unit 10d.
- FIG. 13 shows the shape of the collimating lens 14a according to the present embodiment.
- FIG. 13 (A) is a perspective view of the collimating lens 14a, and FIG. It is XIII sectional drawing.
- the flange 144 formed on the outer periphery of the parallelizing lens 14a is formed so as to protrude in a flange shape outside the parallelizing lens 14a.
- the end portion 14 3 of the flange 14 2 is chamfered, and is tapered so that the outer side (the arrow side in FIG. 13B) is sharp.
- the adhesive is fixed to the lens fixing part 16 d of the lens positioning member 16 d by fixing the parallelizing lens 14 a to the lens fixing part 16 d of the lens positioning member 16 d.
- the inner surface of the flange 14 formed between the inner surface 16 of d and the side surface 14 1 a of the collimating lens 14 a and the flange 14 formed on the outer periphery of the collimating lens 14 a
- the parallelizing lens 14 a having the flange 14 2 formed on the outer periphery is connected to the lens fixing portion 16 3 d provided on the lens positioning member 16 d.
- a fixing device for bonding and fixing a fixing device provided with an adhesive injection machine may be used instead of the thermal shearing machine 52a of the fixing device 60 shown in FIG.
- the flange formed on the outer periphery of the parallelizing lens 14a is The lens positioning member 16 is provided by using a fixing jig 90 capable of gripping the parallelizing lens 14 in place of the alignment pin of the fixing device 60 as shown in FIG.
- the light source lamp unit 10 d (light source device 10 d) may be manufactured by fixing the parallelizing lens 14 a to the lens fixing portion 16 3 d of d.
- FIG. 14 is a cross-sectional view showing a state where the parallelizing lens 14a is mounted on a fixing jig 90 capable of holding the parallelizing lens 14 in the fixing device of the present embodiment.
- the fixing jig 90 capable of gripping the parallelizing lens 14a in the fixing device of the present embodiment is formed of a plate-like member, and the tip of the fixing jig 90 is formed of a flange 144 of the parallelizing lens 14a.
- a claw portion 91 is provided for inserting the distal end portion 1'43 and attaching the collimating lens 14a.
- the claw portion 91 is formed such that an acute angle cut is made in the tip of the fixing jig 90.
- the fixing jig 90 is attached from both the left and right sides of the collimating lens 14a, and one side (the lower side in FIG. 14) is provided by one place. From the other side (the upper side in Fig. 14), the parallelizing lens 14a is supported at two points. Insert the tip 1 4 3 of the flange 1 4 2 in the collimating lens 14 a into the claw 9 0 1 of the fixing jig 90, and insert the collimating lens 1 4 attached to the fixing jig 90.
- the angle of the distal end portion 144 of the flange 142 of a is an acute angle of 30 degrees or more and less than 90 degrees. Further, the angle of the end portion 144 of the flange 144 is more preferably in the range of 30 to 60 degrees.
- FIG. 15 is a schematic diagram showing the relationship between the claw portion 90 1 formed on the fixing jig 90 and the angle of the tip portion 14 3 of the flange 14 2 in the parallelizing lens 14 a. is there.
- the angle ⁇ of the distal end portion 14 3 of the flange 14 2 in the collimating lens 14 a is an acute angle of 30 degrees or more and less than 90 degrees (more preferably, 30 degrees or less). 60 °), the cut angle of the claw 90 1 formed on the fixing jig 90 3) can be smaller than the angle a, and the fixing jig can be fixed from the inner surface 1 4 4 of the flange 1 4 2.
- the inner surface 902 of the tool 90 does not protrude.
- FIG. 15 is a schematic diagram showing the relationship between the claw portion 90 1 formed on the fixing jig 90 and the angle of the tip portion 14 3 of the flange 14 2 in the parallelizing lens 14 a. is there.
- the fixing jig 90 (The cut angle of the claw 9 0 1 formed on the Therefore, the inner surface portion 902 of the fixing jig 90 protrudes from the inner surface portion 144 of the flange 144.
- the illuminance distribution of the light beam collimated by the collimating lens 14a by the light beam detector 53 is converted into image data, and according to the information of the image data.
- Position the lens by finely moving the collimating lens 14a with respect to the lens fixing part 16 3d in the direction perpendicular to the optical axis of the collimating lens 14a, and in the direction of the optical axis.
- the method of injecting the adhesive is as described in the third embodiment described above, by providing an injection hole (not shown) in the lens positioning member 16 d and injecting the adhesive, or by using the lens positioning member 16 d Between the inner surface 16 of the lens 16 d and the side surface 14 a of the collimating lens 14 a, and the inner surface of the plunger 14 2 formed on the collimating lens 14 a Various methods can be used, such as inserting an injection tube between the 144 and the outer surface of the lens positioning member 16d to inject the adhesive.
- a light source lamp unit having a method for fixing the parallelizing lens 14a to the lens fixing portion 163d provided on the lens positioning member 16d by using a fixing device provided with a fixing jig 90. The method for manufacturing 10d will be described below.
- the sub-reflecting mirror is applied to the light source lamp 11
- the elliptical reflector 12 positioned and fixed together with 13 is fixed to the lamp housing 15, and the lens positioning portion 16 d provided on the lamp housing 15 is arranged on the holding base.
- the light beam detecting device is used.
- the illuminance distribution of the light beam collimated by the parallelizing lens 14a is converted into image data, and the fixing jig 90 with the parallelizing lens 14a is moved according to the information of the image data.
- fine adjustment of the parallelizing lens 14a in the direction perpendicular to the optical axis direction of the parallelizing lens 14a and the optical axis direction is performed to perform positioning adjustment with respect to the lens fixing portion 163.
- the fixing jig for the side surface portion 14 4 a of the parallelizing lens 14 a and the lens fixing portion 16 d of the lens positioning member 16 d and the inner surface portion 16 6 d of the parallelizing lens 14 a Adhesive is injected or applied to the outer peripheral portion of the portion not covered by the 90 claw portion 901, forming a part of the attachment portion 70a (the hatched portion in FIG. 17B). Will be done.
- step (5-5-1) When the adhesive injected in step (5-5-1) has solidified, remove the fixing jig 90 and remove the parallelizing lens 14a, and then use the adhesive for the parallelizing lens 14a.
- An adhesive such as, for example, a thermosetting adhesive or a cold setting adhesive is poured or applied to the remaining outer peripheral portion to which no is applied, and solidified to form an adhesive portion 70a. . This ensures that, so that the bonding portion 7 0 a (hatched portion in FIG. 1 7 (C)) is formed over the entire circumference of the outer peripheral portion of the collimating lens 1 4 a (FIG. 1 7 (C)) b
- the parallelizing lens 14a is fixed to the lens positioning member 16d using an adhesive. Even so, it is possible to easily inject or apply the adhesive over the entire circumference of the parallelizing lens 14a.
- O Since the entire outer periphery of the parallelizing lens 14a is fixedly attached to the lens positioning member 16d, the adhesive portion 70a is easily and surely attached to the outer periphery of the parallelizing lens 14a.
- the parallelizing lens 14a is formed over the entire surface, and is fixed to the lens positioning member 16d. Therefore, an explosion-proof structure can be realized without unnecessarily increasing the number of parts. For example, even if the arc tube ruptures, debris does not scatter outside and thorough explosion-proof measures are taken.
- the parallelizing lens 14 Since the angle of the tip of the flange 14 formed on the outer periphery of the parallelizing lens 14a is an acute angle of 30 degrees or more and less than 90 degrees, the parallelizing lens 14 is fixed to the fixing jig 90. When mounting the fixing jig 90, it is possible to prevent the portion 90 1 formed on the fixing jig 90 from protruding from the inner surface of the flange 142.
- the parallelizing lens 14 is fitted to the tip 163b of the lens positioning member 16b to determine the position, and the adhesive is applied. Even if it is injected or applied, the inner surface 90 2 of the fixing jig 90 does not come into contact with the lens fixing part 16 3 d or the vertical part 16 2 d of the lens positioning member 16 d.
- the thickness between the inner surface 14 4 of the flange 14 a of the bonded portion 70 a formed by the adhesive and the outer portion of the vertical portion 16 d of the lens positioning member 16 d should be reduced. Accordingly, it is possible to suppress the displacement of the parallelizing lens 14 due to the curing shrinkage of the adhesive. Therefore, it is possible to prevent a decrease in the illuminance of the illumination light of the light source lamp unit 10d.
- the illuminance 'distribution of the light beam collimated by the collimating lens 14 or 14a was converted into image data by the light beam detecting device 53 equipped with a CCD camera, and was converted into image data. According to the information, the position of the collimating lens 14 or 14a with respect to the lens positioning members 16 to 16d was known.
- the fixing device uses the parallelizing lens 14 or 14 This is different from the fixing device of the above-described embodiment in that a light beam detecting device 55 having an integrating sphere 55a for measuring the illuminance of the light beam collimated by a is provided.
- FIG. 19 is different from the fixing device 60 of the second embodiment shown in FIG. 8 in that an integrating sphere 55a is provided instead of the CCD camera of the light beam detecting device 53.
- FIG. 7 is a view showing a fixing device 60a on which a light beam detecting device 55 is installed.
- the light beam detecting device 55 is arranged on the optical axis of the light source lamp unit 10a such that the light beam emitted from the light source lamp unit 10a disposed in the fixing device 60a enters. It has an optical system 55b and an integrating sphere 55a for measuring the illuminance of the light beam emitted from the optical system 55b.
- the optical system 55 b includes a uniform illumination illumination optical system 20, a field lens 41, and a frame member having an opening of the same shape as the illumination area to be illuminated by the light source lamp unit 10 b, A configuration including the optical system 80 may be adopted.
- the integrating sphere 55a is arranged such that a light beam emitted from the opening of the frame member of the optical system 55b is incident.
- the parallelizing lens 14 is fixed to the lens positioning member 16a including the lens fixing portion 17a of the light source lamp unit 10a of the second embodiment.
- the fixing device 60 of FIG. 19 For example, in the method of fixing the collimating lens 14 to the lens positioning member 16 a using the fixing device 60 of FIG.
- the illuminance of the light beam collimated by the collimating lens 14 Distribution of light flux detector 53 CCD camera instead of taking an image with the camera and converting it into image data, the illuminance in the illumination area to be illuminated by the light source lamp unit 10a is measured by the integrating sphere 55a of the light beam detecting device 55, and the obtained measurement information From the optical axis V of the collimating lens 14 with respect to the optical axis V of the elliptical reflector 1'2, and the collimating lens so that the illuminance of the light beam emitted from the light source lamp unit 10b is optimized. What is necessary is just to adjust the position of 14 with respect to the lens positioning member 16a.
- the configuration of the fixing device of the present embodiment and the light source lamp unit can be manufactured by using the fixing device of the present embodiment by appropriately replacing the light beam detecting device 53 and the light beam detecting device 55. it can.
- the illuminance of the illumination area to be illuminated by the light source lamp unit is measured by the light beam detector 55, and the lens positioning member is adjusted so that the illuminance of the light beam emitted from the light source lamp unit in the illumination area is optimal. Since the position of the parallelizing lens with respect to the lens fixing portion is adjusted, it is possible to manufacture a light source and a lamp unit for illuminating an illumination area with a light beam having an optimum illuminance.
- the present invention is not limited to the above embodiments, but includes the following modifications. ⁇
- a high-pressure mercury lamp in which mercury is sealed in the light-emitting portion 111 is employed as the light source lamp 11.
- the present invention is not limited to this.
- a metal halide lamp, a high-pressure mercury lamp, or the like may be employed in the present invention.
- the present invention is applied to the light source lamp unit 10 in which the light source lamp 11 is provided with the sub-reflector 13.
- the present invention is not limited to this, and the light source lamp without the sub-reflector may be used.
- the present invention may be applied to a light source device provided with.
- the lamp housing 15 is an integrally molded product made of a synthetic resin.
- the invention is not limited to this, and various materials such as metal and ceramics can be used.
- the lens positioning members 16 to 16 d of the above-described embodiments are combined. It can be formed by adopting various materials such as synthetic resin, metal, and ceramics.
- the present invention relates to a projector using only one liquid crystal panel, It can be applied to a projector using two liquid crystal panels 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 light source lamp unit 10 serving as the light source device of the present invention is employed in the projector 1 including the liquid crystal panels 42 R, 42 G, and 42 B.
- the present invention is not limited to this.
- the light source device of the present invention may be adopted for a projector provided with a light modulation device. In this case, the polarizing plates on the light-incident side and the light-exit side can be omitted.
- the present invention is also applicable to a rear type projector that performs projection from the opposite side to the direction of observing the screen. It is.
- the light source run unit or the illumination optical device of the present invention is used for the projector.
- the present invention is not limited to this, and the light source lamp unit or the illumination optical device of the present invention is applied to other optical devices. May be.
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2005506435A JP4059270B2 (ja) | 2003-05-22 | 2004-05-24 | 光源装置の製造方法、及びプロジェクタ |
Applications Claiming Priority (4)
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JP2003145108 | 2003-05-22 | ||
JP2003-145108 | 2003-05-22 | ||
JP2003-321923 | 2003-09-12 | ||
JP2003321923 | 2003-09-12 |
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WO2004104691A1 true WO2004104691A1 (ja) | 2004-12-02 |
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ID=33478973
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/007431 WO2004104691A1 (ja) | 2003-05-22 | 2004-05-24 | 光源装置、光源装置の製造方法、及びプロジェクタ |
Country Status (3)
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US (1) | US7301265B2 (ja) |
JP (1) | JP4059270B2 (ja) |
WO (1) | WO2004104691A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021506089A (ja) * | 2017-12-04 | 2021-02-18 | ツェットカーヴェー グループ ゲーエムベーハー | 自動車投光器、及び自動車投光器の多数の光源と多数の一次光学系を互いに調整するための方法 |
Families Citing this family (6)
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WO2006030486A1 (ja) * | 2004-09-14 | 2006-03-23 | Phoenix Electric Co., Ltd. | 金属凹面反射鏡とこれを用いた光源体およびその光源装置並びにその点灯回路 |
EP2103689A1 (en) * | 2008-03-19 | 2009-09-23 | Gentium S.p.A. | Synthetic phosphodiester oligonucleotides and therapeutical uses thereof |
KR101461959B1 (ko) * | 2008-07-01 | 2014-11-14 | 엘지전자 주식회사 | 스캐닝 디스플레이 |
DE102015223362A1 (de) * | 2015-11-25 | 2017-06-01 | Minimax Gmbh & Co. Kg | Explosionsgeschütztes Gehäuse für Mittel zum Senden und Empfangen elektromagnetischer Strahlung |
US9939859B2 (en) * | 2016-03-17 | 2018-04-10 | Google Llc | Electronic device with a cooling structure |
US11025025B2 (en) * | 2018-11-27 | 2021-06-01 | Lawrence Livermore National Security, Llc | Integrated optics for high energy laser applications |
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JPH03266824A (ja) * | 1990-03-16 | 1991-11-27 | Matsushita Electric Ind Co Ltd | 液晶投写形画像表示用照明装置 |
WO2002056110A1 (fr) * | 2001-01-15 | 2002-07-18 | Seiko Epson Corporation | Projecteur |
JP2003019919A (ja) * | 2001-07-06 | 2003-01-21 | Koito Mfg Co Ltd | 自動車用赤外光照射ランプ |
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US3702395A (en) * | 1970-10-09 | 1972-11-07 | Us Navy | Condenser system for high intensity light source |
JPS5819804A (ja) * | 1981-07-28 | 1983-02-05 | 株式会社東芝 | 照明装置 |
JPS60213916A (ja) | 1984-04-09 | 1985-10-26 | Olympus Optical Co Ltd | 光学素子の保持装置 |
JPH032456U (ja) | 1989-05-31 | 1991-01-11 | ||
US5103381A (en) * | 1991-01-09 | 1992-04-07 | Uke Alan K | Lamp reflector system |
JP3207526B2 (ja) | 1992-06-29 | 2001-09-10 | 株式会社小糸製作所 | プロジェクタランプのリフレクタ駆動機構 |
JP2707391B2 (ja) * | 1992-09-01 | 1998-01-28 | 株式会社小糸製作所 | プロジェクタ型前照灯 |
DE4315393C2 (de) * | 1993-05-08 | 2002-10-31 | Bosch Gmbh Robert | Kraftfahrzeugscheinwerfer mit einem Reflektor und einer Streulinse |
JPH10199305A (ja) * | 1997-01-10 | 1998-07-31 | Koito Mfg Co Ltd | 投射型ランプ |
JP3208364B2 (ja) * | 1997-10-03 | 2001-09-10 | 株式会社小糸製作所 | 車両用灯具 |
JP2000028887A (ja) | 1998-07-14 | 2000-01-28 | Canon Inc | 枠体へのレンズ固定装置、枠体へのレンズ固定方法及び枠体付きレンズ |
JP2002214563A (ja) * | 2001-01-12 | 2002-07-31 | Mitsubishi Electric Corp | ランプ、偏光変換光学系、集光光学系および画像表示装置 |
JP4070190B2 (ja) * | 2002-08-19 | 2008-04-02 | 株式会社小糸製作所 | 車両用ヘッドランプ |
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2004
- 2004-05-21 US US10/849,880 patent/US7301265B2/en active Active
- 2004-05-24 JP JP2005506435A patent/JP4059270B2/ja not_active Expired - Fee Related
- 2004-05-24 WO PCT/JP2004/007431 patent/WO2004104691A1/ja active Application Filing
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JPH03266824A (ja) * | 1990-03-16 | 1991-11-27 | Matsushita Electric Ind Co Ltd | 液晶投写形画像表示用照明装置 |
WO2002056110A1 (fr) * | 2001-01-15 | 2002-07-18 | Seiko Epson Corporation | Projecteur |
JP2003019919A (ja) * | 2001-07-06 | 2003-01-21 | Koito Mfg Co Ltd | 自動車用赤外光照射ランプ |
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JP2021506089A (ja) * | 2017-12-04 | 2021-02-18 | ツェットカーヴェー グループ ゲーエムベーハー | 自動車投光器、及び自動車投光器の多数の光源と多数の一次光学系を互いに調整するための方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4059270B2 (ja) | 2008-03-12 |
US7301265B2 (en) | 2007-11-27 |
US20050023273A1 (en) | 2005-02-03 |
JPWO2004104691A1 (ja) | 2006-07-20 |
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