JP2006126391A - Optical axis adjustment method of light source device, and light source device and projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device optical axis adjusting method that eliminates the need for a complex mechanism for adjusting the optical axis of a light source lamp, hence the need for a large installation space and an adjustment space, and the need to increase a manufacturing cost. <P>SOLUTION: In the light source device optical axis adjustment method for adjusting the angle of the optical axis of the light source lamp 110 relative to a housing 116, a housing having four light source lamp receiving parts for supporting the light source lamp 110 from the back face of the light source lamp 110 is used as the housing 116. A universal spacer 160 is made ready for use such that it can be disposed striding across the two light source lamp receiving parts, which are adjacent to each other and arbitrarily selected from the four light source lamp receiving parts. While at least the one universal spacer 160 is disposed between the housing 116 and the light source lamp 110, the light source lamp 110 is fixed to the housing 116. Thus, the angle of the optical axis of the light source lamp 110 relative to the housing 116 can be adjusted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical axis adjustment method for a light source device, a light source device, and a projector.

  FIG. 7 is a diagram for explaining an illumination optical system of a general projector. The light source lamp 1 has a parabolic reflector 2 and an arc tube 3. The light emission center 4 of the arc tube 3 is disposed at the focal position of the paraboloid reflector 2. For this reason, the light radiated from the arc tube 3 is reflected by the paraboloid reflector 2 and becomes substantially parallel light, and enters the integrator optical system including the first lens array 19, the second lens array 20, and the superimposing lens 21. It will be injected towards.

  In a projector having such a light source lamp 1, when the optical axis of the light source lamp 1 and the optical axis of the integrator optical system do not coincide with each other, the light from the light source lamp 1 is not effectively used, and the light use efficiency is increased. Decreases. This is because, when the optical axis of the light source lamp 1 does not coincide with the optical axis of the integrator optical system, each partial light beam divided by the first small lens of the first lens array 19 corresponds to the corresponding second lens. This is because the second small lens of the array 20 cannot be correctly entered. This is particularly noticeable when the angle between the optical axis of the light source lamp 1 and the optical axis of the integrator optical system does not match.

  FIG. 8 is a diagram illustrating an optical axis adjustment method of a conventional light source device. As shown in FIG. 8, the conventional optical axis adjustment method of the light source device uses an eccentric cam 12 and an eccentric driver 23 to change the angle of the optical axis of the light source lamp 1 with respect to the housings 14 and 16 that house the light source lamp 1. , And by adjusting around the X axis and around the Y axis. For this reason, according to the conventional optical axis adjustment method of the light source device, the angle of the optical axis of the light source lamp is set with the two axes (X axis and Y axis) orthogonal to the optical axis (Z axis) of the light source lamp 1 as rotation axes. Since the angle can be adjusted, a favorable angle adjustment is possible (for example, see Patent Document 1).

JP 2003-330114 A

  However, in the optical axis adjustment method of the light source device described above, as can be seen from FIG. 8, the mechanism for adjusting the optical axis of the light source lamp is complicated, requiring a large installation space and adjustment space, There was a problem that the manufacturing cost was high.

  Therefore, the present invention has been made to solve such a problem, and does not require a complicated mechanism for adjusting the optical axis of the light source lamp, and therefore does not require a large installation space or adjustment space. Another object of the present invention is to provide a method for adjusting the optical axis of a light source device that does not increase the manufacturing cost. Another object of the present invention is to provide a light source device adjusted by such an optical axis adjustment method of the light source device. A further object is to provide a projector including such a light source device.

  An optical axis adjustment method for a light source device according to the present invention includes: a light source lamp having a light-emitting tube and a reflector; and a light source device including a housing that houses the light source lamp, and an optical axis angle of the light source lamp with respect to the housing. An optical axis adjustment method of a light source device for adjusting the light source device, wherein a housing having four light source lamp receiving portions for supporting the light source lamp from the back surface of the light source lamp is used as the housing. A first spacer, a second spacer, a third spacer, and a fourth spacer that can be disposed across any two adjacent light source lamp receiving portions among the two light source lamp receiving portions are prepared. The first spacer, the second spacer, the third spacer, and the fourth spacer with respect to the housing in a state where at least one spacer is disposed between the housing and the light source lamp. By fixing the source lamp, and adjusting the angle of the optical axis of the light source lamp to said housing.

For this reason, according to the optical axis adjustment method of the light source device of the present invention, the light source lamp is simply fixed to the housing with at least one spacer disposed between the housing and the light source lamp. The angle of the optical axis of the light source lamp with respect to can be adjusted.
In addition, since the amount of deviation of the angle of the optical axis in the light source lamp becomes a substantially constant value between the light source lamps of the same lot, if it is the light source lamp of the same lot, in any part of the four light source lamp receiving portions It can be predicted to some extent whether a spacer should be arranged. For this reason, the adjustment operation is extremely easy.

  As a result, the optical axis adjustment method of the light source device of the present invention does not require a complicated mechanism for adjusting the optical axis of the light source lamp, and therefore does not require a large installation space and adjustment space, resulting in high manufacturing costs. This is a method for adjusting the optical axis of a light source device that does not occur.

  In the optical axis adjustment method of the light source device of the present invention, in addition to arranging one spacer across two adjacent specific light source lamp receivers among the four light source lamp receivers, Another spacer can be arranged so as to be orthogonal. Thereby, the optical axis of the light source lamp can be adjusted by an arbitrary angle.

  In the optical axis adjustment method of the light source device of the present invention, it is preferable to use universal spacers having the same planar shape as the first spacer, the second spacer, the third spacer, and the fourth spacer.

  By adopting such a method, the angle of the optical axis of the light source lamp with respect to the housing can be adjusted simply by preparing a universal spacer having the same planar shape, thereby further facilitating the adjustment operation. be able to.

  In the optical axis adjustment method of the light source device of the present invention, it is preferable that the universal spacer is provided with at least one screw hole or a screw recess.

By adopting such a method, the light source lamp can be screwed and fixed to the housing through the screw hole or screw recess of the universal spacer, so that the above adjustment work is further facilitated. Can do.
In this case, it is preferable to provide a screw hole or a screw recess so that screwing can be performed in any portion of the four light source lamp receiving portions where the universal spacer is disposed.

  In the optical axis adjustment method of the light source device of the present invention, the first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer has a thickness of 0.05 to 1.5 mm. It is preferable to have.

By adopting such a method, the angle of the optical axis of the light source lamp with respect to the housing is set by fixing the light source lamp to the housing with the necessary spacers disposed between the housing and the light source lamp. Can be adjusted.
In this case, as the first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer, a plurality of types having different thicknesses are prepared, and an appropriate one corresponding to the angle adjustment amount is prepared. You may make it select and use a thing, and prepare one kind of thin things as a 1st spacer, a 2nd spacer, a 3rd spacer, and a 4th spacer or a universal spacer, A number corresponding to the angle adjustment amount may be used.
In the optical axis adjustment method for a light source device according to the present invention, the first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer may have a thickness of 0.1 to 1.0 mm. More preferably, it has a thickness.

  In the optical axis adjustment method of the light source device of the present invention, the first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer is a heat-resistant material such as aluminum, stainless steel, polyimide resin, or the like. Preferably it consists of.

  During the lighting of the light source lamp, the light source lamp becomes extremely hot. For this reason, it is preferable that the first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer are made of a heat-resistant material such as aluminum, stainless steel, polyimide resin, or the like.

  The light source device of the present invention is a light source device in which the optical axis of the light source device is adjusted using the above-described optical axis adjustment method of the light source device of the present invention.

  For this reason, the light source device of the present invention does not require a complicated mechanism for adjusting the optical axis of the light source lamp, and therefore does not require a large installation space or adjustment space, and does not increase the manufacturing cost. Since the light source device is adjusted by the optical axis adjustment method of the device, the light source device is small and inexpensive.

  The projector according to the present invention includes an illumination optical system having the above-described light source device according to the present invention and an integrator optical system that uniformizes the in-plane light intensity distribution of the light from the light source device, and the light from the illumination optical system as image information. An electro-optic modulation device that modulates in response to the light and a projection optical system that projects light modulated by the electro-optic modulation device.

  For this reason, according to the projector of the present invention, since the illumination optical system having the light source device that is small and inexpensive is provided, the projector is small and inexpensive.

  Hereinafter, an optical axis adjusting method, a light source device, and a projector of a light source device according to the present invention will be described based on embodiments shown in the drawings.

Embodiment 1
FIG. 1 is a diagram for explaining a projector 1000 and a light source device 102 according to the first embodiment.
In the following description, three directions orthogonal to each other are defined as a z-axis direction (illumination optical axis 100ax direction in FIG. 1), an x-axis direction (a direction parallel to the paper surface in FIG. 1 and perpendicular to the z-axis), and y. An axial direction (a direction perpendicular to the paper surface in FIG. 1 and perpendicular to the z-axis).

  As shown in FIG. 1, a projector 1000 according to the first embodiment includes an illumination optical system 100 and liquid crystal devices 400R, 400G, and 400B as electro-optic modulation devices that modulate light from the illumination optical system 100 according to image information. And a projection optical system 600 that projects light modulated by the liquid crystal devices 400R, 400G, and 400B.

The illumination optical system 100 includes a light source device 102, a first lens array 120 and a second lens array 130 for making the intensity distribution of light from the light source device 102 uniform, and unpolarized light from the second lens array 130. Is converted into polarized light, and a superimposing lens 150 that superimposes the light from the polarization converting element 140 on the illuminated area.
The light source device 102 includes a light source lamp 110 having an arc tube 112 and a parabolic reflector 114 as a reflector, and a housing 116 that houses the light source lamp 110. As shown in FIGS. 1 and 2B, a front glass 117 is disposed on the front surface of the housing 116.

  Between the illumination optical system 100 and the liquid crystal devices 400R, 400G, and 400B, the light from the illumination optical system 100 is separated into red light, green light, and blue light and guided to the three liquid crystal devices 400R, 400G, and 400B. The color separation light guide optical system 200 is provided. The color separation light guide optical system 200 includes two dichroic mirrors 210 and 220, three mirrors 230, 320, and 340, and relay lenses 310 and 330. Field lenses 240B, 240G, and 350 are disposed immediately before the liquid crystal devices 400R, 400G, and 400B.

  The color lights modulated in the liquid crystal devices 400R, 400G, and 400B are combined by the cross dichroic prism 500. The combined light generated in the cross dichroic prism 500 is emitted toward the projection optical system 600.

  The projection optical system 600 is configured to project the combined light from the cross dichroic prism 500 onto the projection surface as a display image.

FIG. 2 is a diagram for explaining the light source device 102 according to the first embodiment. 2A is a front view of the light source device 102, and FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A. FIG. 3 is an exploded perspective view of the light source device 102 according to the first embodiment. FIG. 4 is a diagram illustrating the casing 116 and the universal spacer 160 used in the optical axis adjustment method of the light source device according to the first embodiment. 4A is a schematic diagram for explaining a state in which the universal spacer 160 is disposed in the housing 116, FIG. 4B is a plan view of the universal spacer 160, and FIG. 5 is a side view of a spacer 160. FIG. FIG. 5 is a diagram for explaining the optical axis adjustment method of the light source device 102 according to the first embodiment.
In FIGS. 3 and 4 (a), for ease of explanation, a state in which two universal spacers 160 are arranged in the housing 116 as shown in the drawing is illustrated.

As described above, the light source device 102 according to the first embodiment includes the light source lamp 110 having the arc tube 112 and the parabolic reflector 114 and the housing 116 that houses the light source lamp 110, as shown in FIGS. Is a light source device.
In the light source device 102 according to the first embodiment, the optical axis of the light source device is adjusted by adjusting the angle of the optical axis 110ax of the light source lamp 110 with respect to the housing 116. Hereinafter, the optical axis adjustment method of the light source device according to the first embodiment will be described in detail.

  In the optical axis adjustment method of the light source device according to the first embodiment, as shown in FIGS. 2 to 4, four light source lamp receivers 118 that support the light source lamp 110 from the back surface of the light source lamp 110 as a casing 116. A housing having 118, 118, 118 (see FIG. 4A) is used. And the universal spacer 160 which can be arrange | positioned ranging over the arbitrary two light source lamp receiving parts among four light source lamp receiving parts 118,118,118,118 of the housing | casing 116 is prepared, and at least 1 universal The angle of the optical axis 110ax of the light source lamp 110 with respect to the housing 116 is adjusted by fixing the light source lamp 110 to the housing 116 with the spacer 160 disposed between the housing 116 and the light source lamp 110. It is said.

For this reason, according to the optical axis adjustment method of the light source device according to the first embodiment, the light source lamp 110 with respect to the casing 116 in a state where at least one universal spacer 160 is disposed between the casing 116 and the light source lamp 110. It is possible to adjust the angle of the optical axis 110ax of the light source lamp 110 with respect to the casing 116 simply by fixing.
Note that the amount of deviation of the angle of the optical axis 110ax in the light source lamp 110 is a substantially constant value between the light source lamps of the same lot, so that the four light source lamp receiving portions 118, 118, It can be predicted to some extent which portion of 118, 118 should be provided with universal spacer 160. For this reason, the adjustment operation is extremely easy.

  As a result, the optical axis adjustment method of the light source device according to the first embodiment does not require a complicated mechanism for adjusting the optical axis 110ax of the light source lamp 110, and thus does not require a large installation space or adjustment space. This is an optical axis adjustment method for a light source device that does not increase the manufacturing cost.

Note that the optical axis adjustment method of the light source device according to the first embodiment is an optical axis adjustment method of the light source device that adjusts the angle of the optical axis 110ax of the light source lamp 110 with respect to the housing 116, and the light source lamp 110 with respect to the housing 116. The amount of deviation of the optical axis 110ax in the x-axis and y-axis plane cannot be adjusted.
However, as shown in FIG. 5, the influence of the amount of deviation in the x-axis and y-axis planes of the optical axis 110ax of the light source lamp 110 relative to the housing 116 on the relative light quantity of the light source lamp 110 affects the light source lamp 110 relative to the housing 116. This is smaller than the influence of the deflection angle of the optical axis 110ax on the relative light quantity of the light source lamp 110. Thus, even if the amount of deviation of the optical axis 110ax of the light source lamp 110 relative to the housing 116 in the x-axis and y-axis plane cannot be adjusted, if the angle of the optical axis 110ax of the light source lamp 110 relative to the housing 116 is adjusted, the light A significant decrease in utilization efficiency can be prevented.

  In the optical axis adjustment method of the light source device according to the first embodiment, one universal spacer 160 is extended across two adjacent specific light source lamp receivers among the four light source lamp receivers 118, 118, 118, 118. In addition to the arrangement, another universal spacer 160 can be arranged to be orthogonal to the universal spacer 160. Thereby, the optical axis 110ax of the light source lamp 110 can be deflected by an arbitrary angle.

  In the optical axis adjustment method of the light source device according to the first embodiment, the angle of the optical axis 110ax of the light source lamp 110 with respect to the housing 116 can be adjusted simply by preparing the universal spacer 160 having the same planar shape. The adjustment work can be further facilitated.

  In the method of adjusting the optical axis of the light source device according to Embodiment 1, the universal spacer 160 is provided with two screw holes 162 and 164 as shown in FIG.

Therefore, according to the optical axis adjustment method of the light source device according to the first embodiment, the light source lamp 110 is screwed to the housing 116 via the screw holes 162 and 164 of the universal spacer 160 as shown in FIG. Since it can be fastened and fixed, the adjustment work can be further facilitated.
In this case, the screw holes 162 and 164 are positions where the screw can be securely tightened even if the universal spacer 160 is arranged in any part of the four light source lamp receiving portions 118, 118, 118, 118. Is provided.

  In the optical axis adjustment method of the light source device according to the first embodiment, as shown in FIG. 4C, the universal spacer 160 has a thin plate shape having a thickness of 0.3 mm.

For this reason, according to the optical axis adjustment method of the light source device according to the first embodiment, the universal spacer 160 having the number corresponding to the angle adjustment amount is disposed between the housing 116 and the light source lamp 110 in the housing 116. On the other hand, by fixing the light source lamp 110, the angle of the optical axis 110ax of the light source lamp 110 with respect to the housing 116 can be adjusted.
It is also possible to prepare a plurality of types of universal spacers 160 having different thicknesses, and select and use an appropriate one according to the angle adjustment amount.

In the optical axis adjustment method of the light source device according to Embodiment 1, the universal spacer 160 uses a thin plate member made of aluminum. This is because the light source lamp 110 becomes extremely hot while the light source lamp 110 is turned on.
As the universal spacer 160, a thin plate member made of another heat resistant material such as stainless steel or polyimide resin can be used.

  As described above, the light source device 102 according to the first embodiment is a light source device in which the optical axis of the light source device is adjusted using the optical axis adjustment method of the light source device according to the first embodiment. This is a light source device that is adjusted by the optical axis adjustment method of the light source device that does not require a complicated mechanism for adjusting the light source, and therefore does not require a large installation space and adjustment space, and does not increase the manufacturing cost. Thus, the light source device is small and inexpensive.

  In addition, as described above, the projector 1000 according to the first embodiment includes the light source device 102 according to the first embodiment and the illumination optical having the integrator optical system that uniformizes the in-plane light intensity distribution of the light from the light source device 102. A system 100; liquid crystal devices 400R, 400G, and 400B that modulate light from the illumination optical system 100 according to image information; and a projection optical system 600 that projects light modulated by the liquid crystal devices 400R, 400G, and 400B. Projector. For this reason, since the illumination optical system having the light source device that is small and inexpensive is provided, the projector is small and inexpensive.

[Embodiment 2]
FIG. 6 is a diagram illustrating the casing 116 and the universal spacer 170 used in the optical axis adjustment method of the light source device according to the second embodiment. FIG. 6A is a schematic view for explaining a state in which the universal spacer 170 is disposed in the housing 116, and FIG. 6B is a plan view of the universal spacer 170.

  Although the optical axis adjustment method of the light source device according to the second embodiment is basically performed in the same manner as the optical axis adjustment method of the light source device according to the first embodiment, FIG. As shown in FIG. 3, the planar shape of the universal spacer 170 is different from that in the first embodiment.

  As described above, the optical axis adjustment method of the light source device according to the second embodiment differs from the case of the optical axis adjustment method of the light source device according to the first embodiment in that the planar shape of the universal spacer 170 used is different from the case of the optical axis adjustment method. A universal spacer 170 that can be placed across any two adjacent light source lamp receivers among the four light source lamp receivers 118, 118, 118, 118 (see FIG. 6A) is prepared. The angle of the optical axis of the light source lamp 110 with respect to the housing 116 is fixed by fixing the light source lamp 110 to the housing 116 with at least one universal spacer 170 disposed between the housing 116 and the light source lamp 110. As in the case of the optical axis adjustment method of the light source device according to the first embodiment, at least one universal spacer 170 is disposed between the housing 116 and the light source lamp 110. Only fixing the light source lamp 110 with respect to the housing 116 at location state, it is possible to adjust the angle of the optical axis of the light source lamp 110 for housing 116.

  For this reason, the optical axis adjustment method of the light source device according to the second embodiment does not require a complicated mechanism for adjusting the optical axis of the light source lamp, similarly to the optical axis adjustment method of the light source device according to the first embodiment. Therefore, the optical axis adjustment method of the light source device does not require a large installation space and adjustment space, and does not increase the manufacturing cost.

  In the optical axis adjustment method of the light source device according to the second embodiment, the universal spacer 170 is provided with two screw recesses 172 and 174 and one screw hole 176 as shown in FIG. ing.

  For this reason, also by the optical axis adjustment method of the light source device according to the second embodiment, the light source lamp 110 is screwed and fixed to the housing 116 via the screw recesses 172 and 174 or the screw holes 176 of the universal spacer 170. Therefore, the adjustment work can be further facilitated. The screw recesses 172 and 174 and the screw hole 176 can be securely screwed even when the universal spacer 170 is arranged in any of the four light source lamp receiving portions 118, 118, 118, 118. It is provided in a position.

  The projector of the present invention has been described based on each of the above embodiments. However, the present invention is not limited to each of the above embodiments, and can be implemented in various modes without departing from the scope of the invention. For example, the following modifications are possible.

(1) The projector 1000 according to the first embodiment is a transmissive projector, but the present invention is not limited to this. Even when the present invention is applied to a reflection type projector, the same effect as that provided to a transmission type projector can be obtained. Here, “transmission type” means that an electro-optic modulation device as a light modulation means, such as a transmission type liquid crystal device, transmits light, and “reflection type” This means that an electro-optic modulation device as a light modulation means, such as a reflective liquid crystal device, is a type that reflects light.

(2) Although the projector 1000 according to Embodiment 1 uses a liquid crystal device as an electro-optic modulation device, the present invention is not limited to this. In general, the electro-optic modulation device may be any device that modulates incident light in accordance with image information, and a micromirror light modulation device or the like may be used. For example, a DMD (digital micromirror device) (trademark of TI) can be used as the micromirror light modulator.

(3) Although the light source device of each said embodiment is a light source device provided with the light source lamp which has a paraboloid reflector and an arc_tube | light_emitting_tube, this invention is not limited to this. The same effect can be obtained when a light source device provided with a light source lamp having an ellipsoidal reflector and an arc tube or a light source device further provided with a collimating lens is used as the light source device.

FIG. 3 is a diagram for explaining the projector 1000 and the light source device 102 according to the first embodiment. FIG. 3 is a view for explaining the light source device according to the first embodiment. FIG. 3 is an exploded perspective view of the light source device 102 according to the first embodiment. The figure which shows the housing | casing 116 and the universal spacer 160 which are used for the optical axis adjustment method of the light source device which concerns on Embodiment 1. FIG. FIG. 3 is a view for explaining an optical axis adjustment method of the light source device 102 according to the first embodiment. The figure which shows the housing | casing 116 and the universal spacer 170 which are used for the optical axis adjustment method of the light source device which concerns on Embodiment 2. FIG. The figure shown in order to demonstrate the illumination optical system of a general projector. The figure which shows the optical axis adjustment method of the conventional light source device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,110 ... Light source lamp, 2,114 ... Parabolic reflector, 3,112 ... Light emission tube, 4 ... Light emission center, 5 ... Light emission tube fixing | fixed part, 6 ... Light source lamp front part, 7 ... Light source lamp fixing plate, 7a ... Opening, 7b ... Guide pin mounting hole, 7c ... Eccentric cam guide hole, 7d ... Notch, 7e ... Lower guide hole, 9 ... Light source lamp adjusting plate, 9a ... Guide hole for guide pin, 9b ... Eccentric cam mounting Hole, 9c ... Upper guide hole, 9d ... Recess, 10 ... Light source lamp fixing spring, 11a, 11b ... Fixing screw, 12 ... Eccentric cam, 13 ... Guide pin, 14 ... Housing (upper housing), 14a ... Eccentric cam Operation window, 14b ... fixed screw operation window, 14c ... adjustment hole, 15 ... upper guide pin, 16 ... housing (lower housing), 17 ... lower guide pin, 18 ... cement, 19, 120 ... first Lens array, 20, 13 ... second lens array, 21,150 ... superimposing lens, 22,400R, 400G, 400B ... liquid crystal device, 23 ... eccentric driver, 100 ... illumination optical system, 100ax ... illumination optical axis, 102 ... light source device, 110ax ... optical axis , 116, housing, 140, polarization conversion element, 160, 170, universal spacer, 162, 164, 176, screw hole, 172, 174, recess for screw, 200, color separation light guide optical system, 210, 220, dichroic Mirror, 230, 320, 340 ... Mirror, 310, 330 ... Relay lens, 240B, 240G, 350 ... Field lens, 500 ... Cross dichroic prism, 600 ... Projection optical system, 1000 ... Projector

Claims (7)

An optical axis adjustment method for a light source device that adjusts an angle of an optical axis of the light source lamp with respect to the housing in a light source device including a light source lamp having an arc tube and a reflector and a housing for housing the light source lamp. And
As the case, using a case having four light source lamp receiving portions that support the light source lamp from the back side of the light source lamp,
A first spacer, a second spacer, a third spacer, and a fourth spacer that can be disposed across any two adjacent light source lamp receiving portions among the four light source lamp receiving portions of the housing are prepared. In addition, at least one of the first spacer, the second spacer, the third spacer, and the fourth spacer is disposed between the housing and the light source lamp. An optical axis adjustment method for a light source device, wherein an angle of an optical axis of the light source lamp with respect to the housing is adjusted by fixing the light source lamp to the housing. In the optical axis adjustment method of the light source device according to claim 1,
An optical axis adjustment method for a light source device, wherein universal spacers having the same planar shape are used as the first spacer, the second spacer, the third spacer, and the fourth spacer. In the optical axis adjustment method of the light source device according to claim 2,
The method of adjusting an optical axis of a light source device, wherein the universal spacer is provided with at least one screw hole or a screw recess. In the optical axis adjustment method of the light source device in any one of Claims 1-3,
The first spacer, the second spacer, the third spacer, the fourth spacer, or the universal spacer has a thickness of 0.05 to 1.5 mm, and adjusts the optical axis of the light source device. . In the optical axis adjustment method of the light source device in any one of Claims 1-4,
The first spacer, the second spacer, the third spacer and the fourth spacer, or the universal spacer are made of a heat-resistant material such as aluminum, stainless steel, polyimide resin, or the like. Method.   A light source device in which the optical axis of the light source device is adjusted using the optical axis adjustment method of the light source device according to claim 1.   An illumination optical system having a light source device according to claim 6 and an integrator optical system that uniformizes in-plane light intensity distribution of light from the light source device, and modulates light from the illumination optical system according to image information A projector comprising: an electro-optic modulation device; and a projection optical system that projects light modulated by the electro-optic modulation device.

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