JP2018151460A - projector - Google Patents

Abstract

To provide a projector that can easily reduce costs. A projector includes an optical component, a component accommodating member that accommodates the optical component, and a lid member that is combined with the component accommodating member. The component accommodating member includes a groove portion in which the optical component is disposed, and an inner portion of the groove portion. And a first inclined part that is inclined with respect to the reference part and is positioned at a position where the optical part disposed in the groove part comes into contact with the reference part. And a cover member has a press part which presses an optical component in a standard part. [Selection] Figure 7

Description

  The present invention relates to a projector.

  Conventionally, a projector including a light source device, a light modulation device that modulates light emitted from the light source device to form an image according to image information, and a projection optical device that magnifies and projects the formed image. Are known. As such a projector, there is known a projector including a plurality of optical components arranged on an optical path of light emitted from a light source device, and an optical component housing that houses the plurality of optical components. (For example, refer to Patent Document 1).

  The projector described in Patent Document 1 includes a reflection mirror that is one of the plurality of optical components, and an optical component housing (a lower light guide and an upper light guide) in which the reflection mirror is arranged. Among these, the optical component housing has a protruding portion in which a groove portion into which the reflection mirror is inserted is formed. The reflection mirror inserted into the groove is pressed and held on the inner wall surface of the groove by a leaf spring inserted between the back surface of the reflection mirror and the wall of the optical component casing.

Japanese Patent Laying-Open No. 2005-43679

In recent years, there is an increasing demand for cost reduction of projectors.
In response to such a demand, in the projector described in Patent Document 1, it is necessary to provide a leaf spring that holds the reflection mirror, and it is difficult to reduce the cost.
In addition, since it is necessary to provide a space in which the leaf spring is disposed in the optical component casing, not only the optical component casing is likely to be large, but also material costs and processing costs are likely to increase. For this reason, it is difficult to reduce the manufacturing cost of the optical component casing.
Furthermore, it is necessary to secure a region pressed by the leaf spring in the reflection mirror, which increases the size of the reflection mirror and tends to increase the manufacturing cost.
For these reasons, there has been a demand for a projector configuration that facilitates cost reduction.

  An object of the present invention is to solve at least a part of the above-described problems, and an object of the present invention is to provide a projector that can easily reduce costs.

  A projector according to an aspect of the present invention includes an optical component, a component accommodating member that accommodates the optical component, and a lid member that is combined with the component accommodating member, and the optical component is disposed on the component accommodating member. A groove portion, a reference portion positioned in the groove portion and in contact with the optical component, and an optical component disposed in the groove portion so as to be inclined with respect to the reference portion. A first inclined portion that is positioned at a contact position, and the lid member has a pressing portion that presses the optical component against the reference portion.

According to such a configuration, the optical component can be held on the reference portion located in the groove portion by the first inclined portion of the component housing member and the pressing portion of the lid member. There is no need to use a member. For this reason, the number of parts of the projector can be reduced. In addition, since it is not necessary to provide a pressing area pressed by the biasing member in the optical component, the optical component and the component housing member can be reduced in size.
Therefore, it is possible to easily reduce the manufacturing costs of the optical component and the component housing member, and it is possible to reduce the size and cost of the projector.

In the one aspect, it is preferable that the first inclined portion is inclined in a direction away from the lid member as it goes to the reference portion.
According to such a configuration, the optical component inserted into the groove portion from the lid member side can be moved to the reference portion side by the first inclined portion. Therefore, it is possible to easily place the optical component at a position where it comes into contact with the reference portion, and the optical component can be easily positioned.

In the said one aspect | mode, the crossing angle of the extended surface of the surface which forms the inner surface of the said groove part and the said reference | standard part is located, and the extended surface of the inclined surface which the said 1st inclined part has is 10 degrees or more and 25 degrees or less It is preferable that the angle is within the range.
Here, when the crossing angle is less than 10 °, when the dimension of the optical component in the direction toward the reference part and the dimension between the reference part and the first inclined part are different from the design dimension due to tolerances, The position of the optical component that is in contact with the reference portion is easily changed from the design position in the insertion direction of the optical component into the groove.
When the crossing angle exceeds 25 °, depending on the type of optical component, the end of the optical component may be caught on the inclined surface, and the optical component may not be positioned at a position where the optical component contacts the reference portion. . For example, when the optical component is a plate-like mirror, such a problem becomes significant.
On the other hand, by setting the crossing angle to an angle within the above range, the optical component can be easily arranged at the design position. Therefore, the image projection by the projector can be performed appropriately, and the reliability of the projector can be improved.

In the above aspect, the reference portion is located on either the light incident side surface or the light emission side surface of the optical component inserted into the groove portion on the inner surface of the groove portion, and the first inclined portion is It is preferable that the component housing member is located on a bottom surface portion facing the lid member.
Here, the optical component applied to the projector needs to be arranged at a predetermined position on a preset illumination optical axis. On the other hand, depending on the optical component, if it is arranged at the predetermined position, the position in the direction orthogonal to the illumination optical axis may not be a problem. For example, a dichroic mirror that transmits the first color light and reflects the second color light needs to be disposed at the predetermined position, but there is no significant problem even if it is slightly shifted in the orthogonal direction.
On the other hand, according to the above configuration, since the reference portion on which the optical component is pressed is located on either the light incident side surface or the light emission side surface, the optical component is arranged at the arrangement position. Can be easier.
Further, since the first inclined portion is located on the bottom surface portion, the optical component inserted into the groove portion can be easily brought into contact with the first inclined portion. Accordingly, also in this respect, it is possible to easily arrange the optical component at the arrangement position.

In the one aspect, it is preferable that the reference portion is located on the surface on the light incident side.
Here, depending on the optical component applied to the projector, the light incident surface needs to be positioned at the arrangement position. When the reference portion with which such an optical component abuts is positioned on the light emitting side surface, when an error occurs in the thickness dimension of the optical component, the position of the light incident surface of the optical component is There is a possibility of deviation from the arrangement position.
On the other hand, according to the above configuration, even when the error occurs, the optical component can be arranged so that the light incident surface is located at the arrangement position. Therefore, the image projection by the projector can be performed appropriately, and the reliability of the projector can be improved.

In the one aspect, it is preferable that an end portion on the reference portion side of the first inclined portion is separated from a surface on which the reference portion is located on the inner surface of the groove portion.
In other words, the end portion on the reference portion side is preferably not directly connected to the surface on which the reference portion is located.
Here, when the surface on which the reference portion is located and the first inclined portion are directly connected, the reference portion side from the contact portion with the optical component in the first inclined portion when the optical component is in contact with the reference portion. This area becomes a dead space that is not used for positioning the optical component. Such a dead space increases the dimension of the component housing member in the direction away from the lid member.
On the other hand, according to the said structure, generation | occurrence | production of the said dead space can be suppressed and a component accommodating member can be reduced in size. Therefore, it is possible to reduce the cost and size of the component housing member, and thus the projector.

In the one aspect, it is preferable that the first inclined portion and the pressing portion are in contact with an outer portion of a light incident region in the optical component.
In addition, as an outer part, the position of the corner vicinity of an optical component can be illustrated.
According to such a structure, it can suppress that the light which injects into an optical component, and the light which passed the said optical component are shielded by the 1st inclination part and a press part.
In many cases, the positions near the corners of the optical component are unused margin portions. From this, the dimension of the optical component can be set to the minimum dimension by setting the contact part where the first inclined part and the pressing part contact in the vicinity of the corner. Therefore, in this case, it is possible to reduce the size and cost of the optical component, and thus the projector.

In the above aspect, the pressing portion is in contact with the optical component, and when the lid member is combined with the component housing member, the pressing portion extends in a direction from the lid member toward the component housing member toward the reference portion. It is preferable to have the 2nd inclination part with which protrusion amount becomes small.
The direction from the lid member toward the component housing member coincides with the insertion direction of the optical component with respect to the groove.
According to such a configuration, when the lid member is combined with the component housing member, the optical component can be pressed against the reference portion by the second inclined portion. Therefore, the optical component can be reliably held on the reference portion.

In the one aspect, the second inclined portion includes a first direction toward the reference portion, a second direction intersecting with each of the first direction and the direction from the lid member toward the component housing member. It is preferable to have a curved surface shape that is curved along at least one of the directions.
According to such a structure, it can suppress that a 2nd inclination part is caught in the edge part of an optical component. Therefore, the optical component can be reliably pressed against the reference portion, and the optical component can be securely held.

In the one aspect, the lid member includes a plurality of the pressing portions, and one of the plurality of pressing portions presses a portion on one end side of the end portion on the lid member side in the optical component, It is preferable that the other one of the plurality of pressing portions presses a portion on the other end side in the end portion on the lid member side in the optical component.
According to such a configuration, the plurality of pressing portions press one optical component at positions separated from each other, so that the optical component can be stably pressed and the axis along the insertion direction is the center. The rotation of the optical component can be restricted. Therefore, the optical component can be stably held.

In the said one aspect | mode, it is preferable that the circumference | surroundings of the said press part are notched.
According to such a structure, the elasticity (flexibility) to the direction along the said insertion direction can be provided to a press part. Therefore, when the lid member is combined with the component housing member, the pressing portion can press the optical component with a predetermined pressing force. Therefore, the optical component can be stably held with a simple configuration.

FIG. 2 is a schematic diagram illustrating a configuration of a projector according to an embodiment of the invention. The top view which shows the housing | casing for optical components in the said embodiment. The top view which shows the internal structure of the components storage member in the said embodiment. The top view which shows the internal structure of the components storage member in the said embodiment. The top view which expands and shows a part of component storage member in the said embodiment. The figure which looked at the lid member in the above-mentioned embodiment from the component storage member side. The figure which shows a part of housing | casing for optical components in the AA cross section of FIG. The figure which shows typically the light-incidence area | region and shielding area | region in the dichroic mirror in the said embodiment. The top view which shows the comparative example with respect to the image projection apparatus in the said embodiment. The perspective view which shows the deformation | transformation of the press part in the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Schematic configuration of projector]
FIG. 1 is a schematic diagram illustrating a configuration of a projector 1 according to the present embodiment.
The projector 1 according to the present embodiment modulates light emitted from a light source device 30 provided therein to form an image according to image information, and enlarges and projects the image on a projection surface such as a screen. . As shown in FIG. 1, the projector 1 includes an exterior housing 2 and an apparatus main body accommodated in the exterior housing 2. Such a projector 1 has one of the features in the structure of the optical component casing 4 described later.

[Device configuration]
The apparatus main body includes an image projection apparatus 3. In addition, although not shown, the apparatus main body includes a control device that controls the operation of the projector 1, a power supply device that supplies electric power to the electronic components, and a cooling device that cools a cooling target.

[Configuration of image projection apparatus]
The image projection device 3 forms and projects an image according to the image information under the control of the control device. The image projection device 3 includes a light source device 30, a homogenization device 31, a color separation device 32, a relay device 33, an image forming device 34, a projection optical device 35, and an optical component casing 4, and is substantially L as a whole. It is configured as a letter-shaped optical unit.

[Configuration of light source device]
The light source device 30 emits white illumination light to the homogenizing device 31. In this embodiment, the light source device 30 includes a solid light source such as an LD (Laser Diode) or an LED (Light Emitting Diode), and a wavelength conversion device that converts the wavelength of light emitted from the solid light source. However, the present invention is not limited to this, and the light source device 30 may be configured to include a discharge light source lamp such as an ultrahigh pressure mercury lamp. That is, the configuration of the light source device 30 does not matter.

[Configuration of homogenizer]
The homogenizer 31 equalizes the illuminance in a plane orthogonal to the central axis of the illumination light incident from the light source device 30. The homogenizing device 31 includes a first lens array 311, a light control device 312, a second lens array 313, a polarization conversion element 314, and a superimposing lens 315 in the order in which the illumination light is incident.

The first lens array 311 has a configuration in which a plurality of first lenses 3111 that are small lenses are arranged in a matrix in the orthogonal plane. The first lens array 311 divides incident illumination light into a plurality of partial light beams by the first lenses 3111.
The light control device 312 is disposed between the lens arrays 311 and 313. The light control device 312 shields a part of the partial light flux incident on the second lens array 313 from the first lens array 311, thereby adjusting the amount of light incident on the light modulation device 343 described later. The dimmer 312 may not be provided.

The second lens array 313 has a configuration in which a plurality of second lenses 3131 that are small lenses corresponding to the first lens 3111 are arranged in a matrix in the orthogonal plane. These second lenses 3131 superimpose a partial light beam incident from the corresponding first lens 3111 together with a superimposing lens 315 on a light modulation device 343 described later.
The polarization conversion element 314 aligns the polarization directions of the plurality of partial light beams incident from the second lens array 313 and outputs the partial light beams to the superimposing lens 315.

[Configuration of color separation device]
The color separation device 32 separates the light beam incident from the uniformizing device 31 into three color lights of red (R), green (G), and blue (B). The color separation device 32 includes plate-like dichroic mirrors 321 and 323 and a reflection mirror 322, and lenses 324 and 325, respectively.
The dichroic mirror 321 reflects blue light and transmits green light and red light.
The reflection mirror 322 reflects blue light incident on the lens 324 after being separated by the dichroic mirror 321 toward the field lens 341 for blue light.
The dichroic mirror 323 reflects green light and transmits red light among green light and red light that are separated by the dichroic mirror 321 and incident via the lens 325. The green light is incident on the field lens 341 for green light, and the red light is incident on the relay device 33.

[Configuration of relay device]
The relay device 33 is provided on an optical path of red light having a longer optical path than that of blue light and green light. The relay device 33 includes an incident side lens 331, a relay lens 333, and reflection mirrors 332 and 334. The red light guided by the relay device 33 enters the field lens 341 for red light.

[Configuration of Image Forming Apparatus]
The image forming apparatus 34 modulates each color light separated by the color separation device 32 according to image information, and then combines the respective color lights to form image light. This image forming apparatus 34 combines a field lens 341, an incident side polarizing plate 342, a light modulation device 343, and an emission side polarizing plate 344 provided for each color light, and one color light that is modulated by each light modulation device 343. A color composition device 345.
Among these, the light modulators (red, green, and blue light modulators 343R, 343G, and 343B, respectively) employ a configuration having a liquid crystal panel in this embodiment.
The color composition device 345 is configured by a cross dichroic prism in this embodiment, but may be configured by combining a plurality of dichroic mirrors.

[Configuration of Projection Optical Device]
The projection optical device 35 enlarges and projects the image light incident from the image forming device 34 onto the projection surface. Although not shown, the projection optical device 35 can be configured as a combined lens having a plurality of lenses and a lens barrel that houses the plurality of lenses.

[Configuration of optical component casing]
FIG. 2 is a plan view showing the optical component casing 4.
The optical component housing 4 accommodates the optical components constituting the devices 31 to 33 therein.
Here, an illumination optical axis Ax, which is a designed optical axis, is set in the image projection apparatus 3. For this reason, the optical component casing 4 holds the optical components constituting the devices 31 to 33 at a predetermined position on the illumination optical axis Ax. As shown in FIG. 2, the optical component casing 4 is mounted on the component storage member 5 serving as a component storage member for storing the optical component and the component storage member 5. And a lid member 6.
Note that the light source device 30, the image forming device 34, and the projection optical device 35 (not shown in FIG. 2) are disposed at predetermined positions on the illumination optical axis Ax.

In the following description, the traveling direction of the light emitted from the light source device 30 is defined as + Z direction, and two directions orthogonal to the + Z direction and orthogonal to each other are defined as + X direction and + Y direction. Among these, the + X direction is the traveling direction of the green light reflected by the dichroic mirror 323, and the + Y direction is the direction from the component storage member 5 toward the lid member 6. In other words, the + X direction coincides with the traveling direction of the blue light reflected by the dichroic mirror 321 and the traveling direction of the red light reflected by the reflecting mirror 332, and further projected from the + Y direction side. This coincides with the projection direction of the image light by the optical device 35.
Although not shown, the direction opposite to the + Z direction is defined as the −Z direction. The same applies to the −X direction and the −Y direction.

[Configuration of parts storage member]
3 and 4 are plan views showing the internal configuration of the component storage member 5. Among these, in FIG. 3, the optical component arrange | positioned inside the component storage member 5 is illustrated, and illustration of the said optical component is abbreviate | omitted in FIG.
As shown in FIGS. 3 and 4, the component storage member 5 is a box-shaped housing formed in a substantially U shape with synthetic resin or metal. The component storage member 5 has a bottom surface portion 5A, a side wall 5B rising from the peripheral edge of the bottom surface portion 5A, and an edge formed by the side wall 5B, for inserting the optical component into the component storage member 5. And an opening 5C. The opening 5C is closed by the lid member 6.
Such a component storage member 5 includes storage units 51 to 54 in which the optical components constituting the devices 31 to 33 and the field lens 341 of the image forming apparatus 34 are stored. These accommodating parts 51-54 are formed in the said side wall 5B, and have a some groove part in which a corresponding optical component is inserted in an inside.
Among these, the accommodating portion 54 that accommodates the green and blue field lenses 341 includes a groove portion 541 and a step portion 542 that hold one end and the other end of the lens 341, and accommodates the red field lens 341. The housing portion 54 has grooves 541 and 543 that hold one end and the other end of the lens 341.
In addition, description is abbreviate | omitted about the accommodating part 51 in which the equalization apparatus 31 is accommodated.

[Accommodating section in which the color separation device is accommodated]
The accommodating part 52 in which the color separation device 32 is accommodated includes mirror arranging parts 521 to 523 and lens arranging parts 524 and 525.
Among these, the lens arrangement portion 524 has a pair of groove portions 5241 and 5242 into which an end portion on the + Z direction side and an end portion on the −Z direction side of the lens 324 are inserted. The lens placement portion 525 includes a pair of grooves 5251 and 5252 into which the + X direction end and the −X direction end of the lens 325 are inserted.
In addition, since the reflecting mirror 322 needs to make the reflected blue light enter the field lens 341, the mirror arrangement unit 522 in which the reflecting mirror 322 is arranged is configured so that the position of the reflecting mirror 322 can be adjusted. .

FIG. 5 is an enlarged plan view showing a part of the component storage member 5. In FIG. 5, the mirrors 321 and 323 are indicated by two-dot chain lines, and a line indicating a step or the like in the bottom surface portion 5 </ b> A is partially omitted for easy viewing.
The mirror arrangement portion 521 includes an end portion on the + X direction side and an end portion on the −X direction side (in other words, an end portion on the + Z direction side and an −Z direction side) of the dichroic mirror 321 (hereinafter sometimes abbreviated as the mirror 321). End portions) are inserted into the groove portions 5211 and 5212.
As shown in FIGS. 3 to 5, the mirror placement portion 521 is positioned on the light incident side surface of the groove portions 5211 and 5212 when the mirror 321 is inserted into the groove portions 5211 and 5212 along the −Y direction. There are inclined portions 5213 and 5214 for positioning the mirror 321 so as to abut on the reference portion ST (FIG. 5).

  Among these inclined parts 5213 and 5214, the inclined part 5213 is located in the vicinity of the groove part 5211 in the bottom face part 5A, and the inclined part 5214 is also located in the part in the vicinity of the groove part 5212 in the bottom face part 5A. In other words, the inclined portion 5213 is provided at a position where the portion near the end portion on the + X direction side of the end portion on the −Y direction side of the mirror 321 contacts, and the inclined portion 5214 is located near the end portion on the −X direction side. It is provided at a position where the part comes into contact. These inclined parts 5213 and 5214 are inclined to the opposite side (−Y direction side) from the lid member 6 toward the corresponding reference part ST (light incident side). That is, the inclined portions 5213 and 5214 are inclined in the direction away from the lid member 6 (−Y direction side) toward the reference portion ST.

By these inclined portions 5213 and 5214, the end portion on the −Y direction side of the mirror 321 inserted in the groove portions 5211 and 5212 is moved in a direction close to the reference portion ST. Accordingly, the mirror 321 is positioned at a position where the end portion on the −Y direction side of the light incident surface of the mirror 321 contacts the reference portion ST. On the other hand, as will be described in detail later, the end portion on the + Y direction side of the mirror 321 is pressed toward the reference portion ST by a pressing portion 63 (see FIG. 6) provided on the lid member 6.
The inclination angles of the inclined parts 5213 and 5214 with respect to the surface on which the reference part ST is located will be described in detail later.

Similarly, the mirror placement section 523 includes an end portion on the + X direction side and an end portion on the −X direction side (in other words, an end portion on the + Z direction side and the −Z direction) of the dichroic mirror 323 (hereinafter sometimes abbreviated as the mirror 323). Side end) has grooves 5231 and 5232 inserted along the −Y direction.
In addition, the mirror placement section 523 applies the mirror 323 inserted in the grooves 5231 and 5232 along the −Y direction to the reference portion ST (FIG. 5) located on the light incident side surface of these grooves 5231 and 5232. Inclined portions 5233 and 5234 are positioned at the contact positions.

  The inclined portions 5233 and 5234 are provided on the bottom surface portion 5A at positions where they contact the portion near the end on the + X direction side and the portion near the end on the −X direction side at the −Y direction end of the mirror 323. ing. These inclined portions 5233 and 5234 are also inclined to the opposite side (−Y direction side) from the lid member 6 toward the reference portion ST. That is, the inclined portions 5233 and 5234 are inclined in the direction away from the lid member 6 (−Y direction side) toward the reference portion ST.

  By these inclined portions 5233 and 5234, the mirror 323 is positioned at a position where the end portion on the −Y direction side of the light incident surface of the mirror 323 contacts the reference portion ST. On the other hand, as will be described in detail later, the end portion on the + Y direction side of the mirror 323 is pressed toward the reference portion ST by a pressing portion 63 (see FIG. 6) provided on the lid member 6.

[Accommodating section in which the relay device is accommodated]
As shown in FIGS. 3 and 4, the accommodating portion 53 that accommodates the relay device 33 includes lens arranging portions 531 and 533 and mirror arranging portions 532 and 534.
The lens arrangement portion 531 has a pair of grooves 5311 and 5312 into which the + X direction end and the −X direction end of the incident side lens 331 are inserted. The lens placement portion 533 includes a pair of grooves 5331 and 5332 into which the + Z direction end and the −Z direction end of the relay lens 333 are inserted.
In addition, the mirror arrangement part 534 is configured so that the position of the reflection mirror 334 can be adjusted, like the mirror arrangement part 522.

The mirror arrangement portion 532 is a groove portion 5321 into which the + X direction side end portion and the −X direction side end portion (in other words, the + Z direction side end portion and the −Z direction side end portion) of the reflection mirror 332 are inserted. 5322.
In addition, the mirror arrangement portion 532 includes the reference portion ST that has the reflection mirror 332 inserted into the groove portions 5321 and 5322 along the −Y direction on the surface opposite to the light incident side on the inner surface of the groove portions 5321 and 5322. Inclined portions 5323 and 5324 positioned at positions where they abut.

The inclined portions 5323 and 5324 also have a portion in the vicinity of the + X direction side (+ Z direction side) at the end portion on the −Y direction side of the reflection mirror 332 and the −X direction side (−Z direction side) in the bottom surface portion 5A. It is provided at a position where it abuts on a portion near the end. These inclined parts 5323 and 5324 are inclined to the side opposite to the lid member 6 (−Y direction side) toward the reference part ST. That is, the inclined portions 5323 and 5324 are inclined in the direction away from the lid member 6 (−Y direction side) toward the reference portion ST.
By such inclined portions 5323 and 5324, the reflection mirror 332 is positioned at a position where the end portion on the −Y direction side on the surface opposite to the light incident surface comes into contact with the reference portion ST. On the other hand, as will be described in detail later, the + Y direction end of the reflection mirror 332 is pressed against the reference portion ST by a pressing portion 64 (see FIG. 6) provided on the lid member 6.

[Configuration of lid member]
FIG. 6 is a view of the lid member 6 as viewed from the component storage member 5 side (−Y direction side). In FIG. 6, the mirrors 321 and 323 and the reflection mirror 332 are indicated by two-dot chain lines.
As shown in FIG. 2, the lid member 6 is attached to the component storage member 5 from the + Y direction side and closes the opening 5 </ b> C (see FIGS. 3 and 4) of the component storage member 5. As shown in FIGS. 2 and 6, the lid member 6 has a notch 61 corresponding to a part of the reflection mirrors 322 and 334 when combined with the component storage member 5. The positions of the reflection mirrors 322 and 334 can be adjusted from the outside of the optical component housing 4 through the notches 61.
Such a lid member 6 has a plurality of pressing portions 62 to 64 that can be elastically deformed along the + Y direction by cutting out the periphery with a part left, and by the plurality of pressing portions 62 to 64, The optical component disposed in the component storage member 5 is pressed and held.

[Pressing part that presses the lens]
When the pressing part 62 is combined with the component storage member 5, two pressing parts 62 are provided in accordance with the superimposing lens 315, the lenses 324 and 325, the incident side lens 331, and the relay lens 333, respectively. These pressing parts 62 are provided with an inclined part 621 that presses and biases the target lens of the lenses 315, 324, 325, 331, and 333 toward the light emitting side, and the tip part of the pressing part 62 (the periphery is notched). (The end on the side opposite to the base end that is not exposed). This tip portion is a moving end when the pressing portion 62 is elastically deformed.

The inclined portion 621 is inclined to the opposite side (+ Y direction side) from the component housing member 5 toward the light emitting side of the target lens. In other words, the inclined portion 621 has an amount of protrusion in the direction (−Y direction) from the lid member 6 toward the component storage member 5 toward the light emitting side of the target lens (a reference portion that determines the holding position of the target lens). It is inclined to become smaller. With such an inclined portion 621, each pressing portion 62 presses and biases the target lens toward the light emitting side surface (reference surface) of the inner surface of the groove portion into which the target lens is inserted. As a result, the target lens is held.
For example, of the two pressing portions 62A that press the lens 325, the pressing portion 62A located on the + X direction side has an end on the + Y direction side of the lens 325 on the light emitting side (+ Z direction side). The pressing portion 62A that is pressed and located on the −X direction side presses the end portion on the −X direction side toward the light emitting side.

[Pressing part that presses the dichroic mirror]
When the pressing portion 63 is combined with the component storage member 5, two pressing portions 63 are provided according to the mirrors 321 and 323, respectively. These pressing portions 63 extend so as to be inclined by 45 ° with respect to the + X direction and the + Z direction in accordance with the inclination of the mirrors 321 and 323.
Such a pressing portion 63 has an inclined portion 631 (second inclined portion) that presses and biases the target mirror of the mirrors 321 and 323 toward the light incident side, and a distal end portion (the periphery is not cut away). At the end opposite to the base end). This tip portion is also a moving end when the pressing portion 63 is elastically deformed.

The inclined portion 631 is inclined to the opposite side (+ Y direction side) from the component housing member 5 toward the light incident side of the target mirror. That is, the inclined portion 631 is inclined so that the protruding amount in the direction (−Y direction) from the lid member 6 toward the component storage member 5 becomes smaller toward the reference portion ST corresponding to the target mirror. Both ends in the direction orthogonal to the direction approaching the target mirror (crossing direction) in the in-plane direction of the surface of the inclined portion 631 are chamfered. Thereby, it is suppressed that the both ends are caught by the end of the target mirror.
By such an inclined portion 631, each pressing portion 63 presses the target mirror toward the reference portion ST corresponding to the target mirror.
For example, of the two pressing parts 63 that press the mirror 323, the pressing part 63 positioned on the + X direction side is the + Y direction side of the mirror 323 and the + X direction side end is on the −Z direction side (light incident side). The pressing portion 63 located on the −X direction side presses the end on the −X direction side toward the + Z direction side on the + Y direction side.

  Note that the periphery of the pressing portion 63 that presses the + X direction end of the mirror 323 is cut out in a substantially L shape, while the periphery of the other pressing portions 63 is cut out in a substantially U shape. It is. This is a measure for avoiding a member provided at a position corresponding to the field lens 341 in the lid member 6.

[Pressing part that presses the reflecting mirror]
Two pressing portions 64 are provided in accordance with the reflection mirror 332 when combined with the component storage member 5. These pressing portions 64 also extend so as to be inclined by 45 ° with respect to the + X direction and the + Z direction in accordance with the inclination of the reflection mirror 332.
As with the pressing portion 63, these pressing portions 64 have an inclined portion 641 (second inclined portion) that presses and urges the reflecting mirror 332 toward the side opposite to the light incident side, and a distal end portion (the periphery is notched). (The end on the side opposite to the base end that is not exposed). This tip portion is also a moving end when the pressing portion 64 is elastically deformed.

The inclined portion 641 is inclined to the opposite side (+ Y direction side) from the component housing member 5 toward the opposite side to the light incident side of the reflection mirror 332. That is, the inclined portion 641 is inclined so that the amount of protrusion in the direction (−Y direction) from the lid member 6 toward the component storage member 5 decreases toward the reference portion ST corresponding to the reflection mirror 332. Note that both ends in the direction orthogonal to the direction approaching the reflecting mirror 332 (cross direction) in the in-plane direction of the surface of the inclined portion 641 are chamfered in the same manner as the inclined portion 631.
By such an inclined portion 641, the pressing portion 64 positioned on the + X direction side presses and urges the end portion on the + Y direction side of the reflecting mirror 332 toward the reference portion ST of the groove portion 5321, and − The pressing portion 64 positioned on the X direction side presses and biases the end portion on the −X direction side toward the reference portion ST of the groove portion 5322.

Note that the periphery of the two pressing portions 64 is cut out by one continuous substantially S-shaped cutout 65. This is because the size of the end portion on the + Y direction side of the reflection mirror 332 (the size in the tilt direction with respect to the + X direction and the + Z direction) is smaller than that of the mirrors 321 and 323, so This is because the necessary elasticity cannot be imparted to each pressing portion 64 if the periphery of 64 is cut away.
On the other hand, by cutting out the periphery of each pressing portion 64 with the S-shaped notch 65, the size of each pressing portion 64 (the dimension from the base end portion to the tip end portion) can be increased. The elasticity required for pressing the reflection mirror 332 to the pressing part 64 can be provided.

[Holding the mirror by the inclined part and the pressing part]
FIG. 7 is a diagram showing a part of a cross section taken along line AA in FIG. 2 of the optical component casing 4. More specifically, FIG. 7 is a cross-sectional view of the optical component housing 4 passing through the center of the mirror 323 and along a plane orthogonal to the light incident surface of the mirror 323, viewed from the −Z direction side on the −X direction side. It is a figure.
The mirror 323 is held as follows by the mirror placement portion 523 of the component storage member 5 and the pressing portion 63 provided on the lid member 6.
When the image projection apparatus 3 is manufactured, the mirror 323 is inserted into the grooves 5231 and 5232 (the groove 5232 is not shown in FIG. 7) from the + Y direction side through the opening 5C as shown in FIG. . As a result, the end of the mirror 323 on the −Y direction side on the + X direction side contacts the inclined portion 5233. Although not shown, the end of the mirror 323 on the −Y direction side and the −X direction side also contacts the inclined portion 5234. The mirror 323 is moved to the −Z direction side along the inclined portions 5233 and 5234, and the light incident surface of the mirror 323 is a surface on the −Z direction side of the inner surface of the groove portions 5231 and 5232 (reference plane SP on the light incident side). ) Is brought into contact with the reference portion ST located at the center.
Thus, the mirror 323 is automatically positioned with respect to the reference portion ST by the inclined portions 5233 and 5234 by being inserted into the groove portions 5231 and 5232.

When the lid member 6 is attached to the component storage member 5 in this state, the inclination of two pressing portions 63 provided according to the mirror arrangement portion 523 (the pressing portion 63 on the −X direction side is not shown in FIG. 7). The portion 631 is brought into contact with the end portion on the + Y direction side of the mirror 323.
As described above, the pressing portions 63 are elastically deformable in the + Y direction, and thus press the mirror 323 toward the −Z direction side (light incident side). As a result, the light incident surface of the mirror 323 is pressed and urged while being in contact with the reference portion ST, and the mirror 323 is held.

Although not shown, the mirror 321 is also positioned by the inclined portions 5213 and 5214 so that the light incident surface comes into contact with the corresponding reference portion ST, and the light incident surface is formed by the two pressing portions 63. It is pressed and urged in a state of being in contact with the reference portion ST. Thereby, the mirror 321 is held.
The reflecting mirror 332 is also positioned by the inclined portions 5323 and 5324 so that the surface opposite to the light incident surface is in contact with the corresponding reference portion ST, and the two pressing portions 64 are used to adjust the opposite side. The surface is pressed and biased in a state where the surface is in contact with the reference portion ST. Thereby, the reflection mirror 332 is held.

[Inclination angle of inclined part]
Here, as shown in FIG. 7, the intersection angle between the extended surface P1 of the inclined surface SL of the inclined portion 5233 and the extended surface P2 of the reference surface SP where the reference portion ST is located among the inner surfaces of the groove portion 5231 is an intersection angle. In the case of α, the crossing angle α is preferably an angle within a range of 10 ° to 25 °. Specifically, the crossing angle α is preferably an angle within a range of 15 ° or more and 20 ° or less. This is due to the following reason.

  When the crossing angle α is an angle of less than 10 °, the inclined surface SL is a plane substantially along the reference surface SP. In this case, if the dimension in the thickness direction of the mirror 323 (the direction in which light passes) or the dimension along the thickness direction between the inclined surface SL and the reference surface SP differs from the design dimension due to tolerance or the like, + Y The position of the mirror 323 in the direction is greatly different from that when the crossing angle α is 10 ° or more. For example, when the dimension in the thickness direction of the mirror 323 becomes larger than the design dimension, the mirror 323 is shifted to the + Y direction side from the design position, and the dimension between the inclined surface SL and the reference surface SP is larger than the design dimension. Then, the mirror 323 is shifted to the −Y direction side from the designed position.

On the other hand, when the intersection angle α is an angle exceeding 25 °, the inclined surface SL is a flat surface inclined in a direction along the bottom surface portion 5A. In this case, when the mirror 323 is inserted between the groove portions 5231 and 5232, the mirror 323 is caught at an unexpected position on the inclined surface SL, that is, a position where the light incident surface does not contact the reference portion ST. May be positioned. That is, there is a possibility that the position of the mirror 323 is shifted from the design position in a direction away from the reference portion ST. In particular, the plate-like member such as the mirror 323 has such a possibility because the end portion is relatively sharp.
Thus, after the mirror 323 is displaced from the design position, if the mirror 323 is held by the pressing portion 63, the position of the mirror 323 is shifted when some impact is applied to the projector 1, There is a possibility that image projection by the projector 1 (image projection apparatus 3) cannot be performed properly.

On the other hand, when the crossing angle α is in the range of 10 ° or more and 25 ° or less, the position of the mirror 323 in the + Y direction in contact with the reference portion ST and the + Z direction. The position can be easily adjusted to the designed position.
In the case where the crossing angle α is in the range of 15 ° or more and 20 ° or less, even when the mirror 323 is inserted relatively roughly into the groove portions 5231 and 5232, the light incident surface is caused by the inclined portion 5233. The mirror 323 can be positioned at a position in contact with the reference portion ST. For this reason, since the mirror 323 can be positioned even when the mirror 323 is inserted into the groove portions 5231 and 5232 by the manufacturing apparatus without depending on the manpower, the manufacturing process of the image projection apparatus 3 and thus the projector 1 can be simplified. .

  Although not shown, the inclined portion 5234 that comes into contact with the mirror 323 is also formed such that the intersection angle between the extended surface of the inclined surface SL and the extended surface of the reference surface SP is within the above range. The same applies to the inclined portions 5213 and 5214 that contact the mirror 321 and the inclined portions 5323 and 5324 that contact the reflecting mirror 332.

As shown in FIG. 7, the end portion SL1 on the reference portion ST side of the inclined surface SL of the inclined portion 5233 is within the range where the mirror 323 can contact the inclined surface SL and the reference portion ST. It is separated from the + Z direction side (light emission side) with respect to the surface on which the reference portion ST is located.
Although not shown, the inclined portion 5234 is the same, and the other inclined portions 5213, 5214, 5323, and 5324 are the same.

[Light incident area and shielding area in mirror]
FIG. 8 is a diagram of the mirror 323 viewed from the light incident side, and is a diagram schematically illustrating the light incident region AR1 and the shielding region AR2 in the mirror 323.
As shown in FIGS. 1 and 3, the light beam (green light and red light) that has passed through the mirror 321 and the lens 325 is incident on the mirror 323. As described above, the mirror 323 is inclined by 45 ° with respect to the + X direction and the + Z direction, and the distance from the superimposing lens 315 to the end of the mirror 323 on the + X direction side is −from the superimposing lens 315 to − It is longer than the distance to the end on the X direction side. For this reason, the light beam incident on the light incident surface 323A of the mirror 323 has a substantially trapezoidal shape having a rounded corner portion with a small + X direction side and a large −X direction side as shown by hatching in FIG. As a luminous flux.

With respect to the light incident area AR1 of the mirror 323 on which such a light beam is incident, the shielding area AR2 in which the passage of light is shielded by the side wall 5B where the grooves 5231 and 5232 are located, the inclined parts 5233 and 5234, and the pressing part 63 is Located on the outside.
Specifically, in the shielding area AR2, the area shielded by the side wall 5B is located at both ends of the mirror 323 in the + X direction. In addition, the inclined portions 5233 and 5234 and the pressing portion 63 are in contact with each other, and the region shielded by these is located at the corner of the mirror 323. That is, the region is located in the vicinity of a rounded corner in the light incident region AR1.

For this reason, the light beam incident on the mirror 323 is not shielded by the side wall 5B and the inclined portions 5233 and 5234, but a part of the light beam (green light) is reflected and the other part (red light) is transmitted. Is done.
As described above, since the shielding area AR2 is positioned, the size of the mirror 323 in the + X direction and the + Y direction can be suppressed to the minimum while ensuring the light incident area AR1.

  For example, when an urging member BM such as a leaf spring or an elastic body is interposed between the inner surfaces of the groove portions 5231 and 5232 and the mirror 323, the mirror 323 is pressed toward the reference portion ST as shown in FIG. As shown, it is necessary to secure the pressing area AR3 pressed by the biasing member BM at both ends in the + X direction of the mirror 323. For this reason, the mirror 323 is longer in the + X direction than in the above case.

FIG. 9 is a comparative example with respect to the image projection apparatus 3 and is a plan view showing a part of the image projection apparatus 3 </ b> A in which the urging member BM is adopted as the holding structure of the mirror 323.
Further, in the image projection apparatus 3A provided with the urging member BM that is inserted into the groove portions 5231 and 5232 and presses the mirror 323, it is necessary to prevent the urging member BM from falling off as shown in FIG. For this reason, the latching | locking part LP which latches urging | biasing member BM is provided in the site | part on the outer side of the groove parts 5231 and 5232 and the other groove part side. In the case where such a locking portion LP is provided, a portion of the mirror 323 corresponding to the locking portion LP is placed on the light incident area AR1 (see FIG. 5) so that the light flux that has passed through the mirror 323 is not blocked by the locking portion LP. 8)). That is, it is necessary to further increase the dimension between the light incident area AR1 and the arrangement position of the urging member BM illustrated in FIG. 8 along the + X direction. For this reason, the dimension in the + X direction of the mirror 323 becomes larger.
In addition to this, since a space is provided in which the biasing member BM is disposed in the groove portions 5231 and 5232, the distance between the light incident side and light emission side surfaces facing each other on the inner surface of the groove portions 5231 and 5232 is determined. Need to spread. For this reason, the component storage member 5, and consequently the image projection device 3A (projector 1) is increased in size.

On the other hand, in the image projection device 3 according to the present embodiment, the mirror 323 is pressed and held toward the reference portion ST by the inclined portions 5233 and 5234 and the pressing portion 63 located in the shielding area AR2. . For this reason, the dimension of the mirror 323 in + X direction can be shortened compared with the case where the said biasing member BM is used. Accordingly, as shown in FIG. 5 with respect to FIG. 9, the mirror 323 can be reduced in size, and the component storage member 5 can be reduced in size. As a result, the image projection device 3 (projector 1) is compared with the image projection device 3A. Can be downsized. As a result, it is possible to reduce the cost of the mirror 323, the component storage member 5, and consequently the image projection apparatus 3 (projector 1).
Although illustration is omitted, also in the mirror 321 and the reflection mirror 332, since the shielding area AR2 is set similarly to the mirror 323, the mirror 321 and the reflection mirror 332 can also be reduced in size.

[Effect of the embodiment]
The projector 1 according to the present embodiment described above has the following effects.
For example, the mirror 323 inserted into the groove portions 5231 and 5232 is formed in the groove portions 5231 and 5232 by the inclined portions 5233 and 5234 as the first inclined portions included in the component storage member 5 and the pressing portion 63 included in the lid member 6. And held in contact with the reference portion ST located at the position. According to this, it is not necessary to use the urging member BM such as the leaf spring. For this reason, the number of parts of the projector 1 can be reduced. In addition, since it is not necessary to provide the mirror 323 with the pressing area AR3 pressed by the biasing member BM, the mirror 323 and the component storage member 5 can be reduced in size.
Therefore, it is possible to easily reduce the manufacturing cost of the mirror 323 and the component storage member 5, and consequently, the projector 1 can be reduced in size and cost.
Further, it can also be achieved by the inclined portions 5233 and 5234 and the pressing portion 63 that hold the mirror 321 inserted in the groove portions 5211 and 5212 in the reference portion ST. The same applies to the inclined portions 5323 and 5324 and the pressing portion 64 that hold the reflection mirror 332 inserted into the grooves 5321 and 5322 in the reference portion ST.

  For example, the inclined portions 5233 and 5234 are inclined toward the −Y direction side (the side opposite to the lid member 6), which is a direction away from the lid member 6 toward the corresponding reference portion ST. According to this, the mirror 323 inserted along the −Y direction into the grooves 5231 and 5232 from the lid member 6 side can be moved to the reference part ST side by the inclined parts 5233 and 5234. Therefore, the mirror 323 can be easily positioned at a position where it abuts on the reference portion ST, and the mirror 323 can be easily positioned. The inclined portions 5323 and 5324 having the same configuration as the inclined portions 5323 and 5324, respectively, and the inclined portions 5213 and 5214 for positioning the mirror 321 and the inclined portions 5323 and 5324 for positioning the reflecting mirror 332 can provide the same effect.

The intersection angle α between the extended surface P1 of the inclined surface SL of the inclined portion 5233 and the extended surface P2 of the reference surface SP where the reference portion ST is located among the inner surfaces of the groove portion 5231 is in the range of 10 ° to 25 °. Is the angle. According to this, as described above, the mirror 323 can be easily arranged at the designed position. Accordingly, image projection by the projector 1 can be appropriately performed, and the reliability of the projector 1 can be improved.
In addition to the inclined portion 5234, the inclined angles 5213 and 5214 that are in contact with the mirror 321 and the inclined portions 5323 and 5324 that are in contact with the reflecting mirror 332 are also in a range where the crossing angle α is 10 ° or more and 25 ° or less. Since it is comprised so that it may become an inside angle, there can exist an effect similar to the above.

The reference portion ST corresponding to the mirror 321 is positioned on the light incident side surface on the inner surfaces of the groove portions 5211 and 5212, and the reference portion ST corresponding to the mirror 323 is positioned on the light incident side surface on the inner surfaces of the groove portions 5231 and 5232. To do. On the other hand, the reference portion ST corresponding to the reflection mirror 332 is located on the surface opposite to the light incident side on the inner surfaces of the groove portions 5321 and 5322. According to this, the mirrors 321 and 323 and the reflection mirror 332 can be easily positioned at predetermined positions on the illumination optical axis Ax.
In addition, since the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 are positioned on the bottom surface portion 5A, the mirrors 321 and 323 and the reflecting mirror 332 inserted into the corresponding groove portions are connected to the inclined portions 5213 and 5214, respectively. , 5233, 5234, 5323, and 5324 can be easily brought into contact with each other. Therefore, these 321 and 323 and the reflection mirror 332 can be easily arranged at the predetermined position.

Here, depending on the optical component applied to the projector, the light incident surface needs to be positioned at a predetermined position on the illumination optical axis Ax.
On the other hand, the reference portion ST corresponding to the mirrors 321 and 323 is positioned on the light incident side surface with respect to the mirrors 321 and 323. According to this, even when an error occurs in the thickness dimension (dimension along the light incident direction) of the mirrors 321 and 323, the mirrors 321 and 323 are arranged so that the light incident surfaces are located at the predetermined positions. Can be placed. Accordingly, image projection by the projector 1 can be appropriately performed, and the reliability of the projector 1 can be improved.

  The end of the inclined portion 5233 on the reference portion ST side is separated from the surface (reference surface SP) where the reference portion ST is located on the inner surface of the groove portion 5231. According to this, since it is possible to suppress the region on the reference portion ST side from the contact portion with the mirror 323 in the inclined portion 5233 from becoming a dead space, the component storage member 5 can be reduced in size. Accordingly, it is possible to reduce the cost and size of the component storage member 5 and thus the projector 1.

The inclined part 5233 and the pressing part 63 are located outside the light incident area AR1 in the mirror 323, and are located in the shielding area AR2 set outside the light incident area AR1. According to this, it is possible to suppress the light incident on the mirror 323 and the light that has passed through the mirror 323 from being blocked by the inclined portion 5233 and the pressing portion 63.
Further, since the inclined portion 5233 and the pressing portion 63 are positioned and contacted in the vicinity of the corner portion of the mirror 323 serving as a margin, the size of the mirror 323 can be minimized. Accordingly, it is possible to reduce the size and cost of the mirror 323 and, in turn, the projector 1.
It should be noted that the inclined portion 5234 and the pressing portion 63 that are in contact with the mirror 323, the inclined portions 5213 and 5214 and the pressing portion 63 that are in contact with the mirror 321, respectively, and the inclined portions 5323 and 5324 and the pressing portion that are in contact with the reflecting mirror 332, respectively. Since 64 is the same, the same effect as described above can be obtained.

  The pressing portion 63 is in contact with the mirrors 321 and 323, and when the lid member 6 is combined with the component storage member 5, in the -Y direction toward the component storage member 5 from the lid member 6 toward the corresponding reference portion ST. And a sloped portion 631 (sloped portion 631 sloped to the opposite side (+ Y direction side) from the component storage member 5). The pressing portion 64 also has an inclined portion 641 as a second inclined portion similar to the inclined portion 631. According to this, when the lid member 6 is combined with the component storage member 5, the mirrors 321, 323 and the reflection mirror 332 can be pressed against the corresponding reference portion ST by the inclined portions 631, 641. Therefore, the mirrors 321 and 323 and the reflection mirror 332 can be securely held.

The lid member 6 has two pressing portions 63 and 64 for one pressing target.
For example, among the pressing portions 63 that come into contact with the mirror 323 to be pressed, the pressing portion 63 positioned on the + X direction side presses the + X direction side portion of the + Y direction side end of the mirror 323, and −X The pressing part 63 positioned on the direction side presses a portion on the −X direction side at the end on the + Y direction side. According to this, since the two pressing portions 63 press one mirror 323 at positions separated from each other, the mirror 323 can be stably pressed, and the mirror 323 centered on the axis along the + Y direction. Can be controlled. Therefore, the mirror 323 can be stably held. The same effect can be achieved by the two pressing portions 63 that come into contact with the mirror 321 to be pressed and the two pressing portions 64 that come into contact with the reflection mirror 332 that is the pressing target. The mirror 332 can be stably held.

  In the lid member 6, the periphery of the pressing portions 62 to 64 is notched. According to this, elasticity (flexibility) in the + Y direction can be imparted to the pressing portions 62 to 64. Therefore, when the lid member 6 is combined with the component storage member 5, the pressing portions 62 to 64 can press the optical components such as the mirror and the lens with a predetermined pressing force. Therefore, these optical components can be stably held with a simple configuration.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the above embodiment, the inclined portions 621 to 641 of the pressing portions 62 to 64 are chamfered at both ends. However, the present invention is not limited to this, and the pressing portions 62 to 64 may not be chamfered. In addition, the inclined portions 621 to 641 do not have to be flat and may be curved.

FIG. 10 is a perspective view showing a pressing portion 63 </ b> A that is a modification of the pressing portion 63.
For example, instead of the pressing portion 63, a pressing portion 63A shown in FIG.
Similar to the pressing portion 63A, the pressing portion 63A includes an inclined portion 631A that comes into contact with a target mirror (for example, a mirror 323) that is a pressing target. Like the inclined portion 631, the inclined portion 631A is directed from the lid member 6 toward the component storage member 5 toward the reference portion ST corresponding to the target mirror when the cover member 6 is combined with the component storage member 5. The protrusion amount in the direction (the protrusion amount in the −Y direction side) is formed to be small. That is, the inclined portion 631A is inclined to the opposite side (+ Y direction side) from the component storage member 5 toward the reference portion ST.

On the other hand, the inclined portion 631A has a curved shape (curved surface shape) in which the approximate center in the + D1 direction (first direction) toward the target mirror swells in the in-plane direction of the inclined surface that is the surface of the inclined portion 631A. . In addition, the inclined portion 631A has a curved shape (curved surface shape) in which the substantially center in the + D2 direction (for example, the extending direction of the pressing portion 63 and the second direction) intersects the + D1 direction in the in-plane direction. Have That is, the inclined portion 631A is formed in an elliptical curved surface curved along the + D1 direction and the + D2 direction.
When such a pressing portion 63A is employed instead of the pressing portion 63, the inclined portion 631A can be suppressed from being caught by the end portion of the target mirror. Therefore, the target mirror can be reliably pressed against the reference portion ST, and the target mirror can be reliably held.
The inclined portion 631A may be curved only in one of the + D1 direction and the + D2 direction.

  In the above-described embodiment, the mirrors 321 and 323 are optical components that are pressed and held on the corresponding reference portion ST by the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 and the pressing portions 63 and 64 as the first inclined portions. And a reflective mirror 332. However, the object to be pressed by the inclined portion and the pressing portion is not limited to these, and may be a lens that constitutes the above-described uniformizing device 31, color separation device 32, and relay device 33, or a lens such as the field lens 341. Moreover, when the image projection apparatus 3 has another lens, the other lens may be the pressing target. That is, the type of optical component to be pressed is not limited.

  In the above-described embodiment, the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 are inclined in the direction away from the lid member 6 (−Y direction) toward the reference portion ST corresponding to the mirror to be pressed. It was. In addition, the inclined portions 631 and 641 of the pressing portions 63 and 64 are also on the + Y direction side so that the protruding amount in the direction from the lid member 6 toward the component storage member 5 decreases toward the reference portion ST corresponding to the mirror to be pressed. It is assumed that it is inclined to. However, the present invention is not limited to this, and the inclination direction of each inclined portion may be another direction as long as the object to be pressed can be positioned at a position where the inclined portion contacts the reference portion. In addition, the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 are positioned on the bottom surface portion 5A, but the present invention is not limited to this, and may be positioned on the side wall 5B.

  In the above embodiment, the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 are formed so that the crossing angle α is an angle in the range of 10 ° to 25 °. However, the present invention is not limited to this, and the inclined portion may be formed so that the crossing angle α is an angle outside the range depending on the type of pressing object and the like. The same applies to the inclination directions of the inclined portions 631 and 641 of the pressing portions 63 and 64.

  In the above embodiment, the reference portion ST corresponding to the mirrors 321 and 323 is positioned on the light incident side surface (reference surface SP) on the inner surface of the groove portion in which the mirrors 321 and 323 are inserted. However, the present invention is not limited to this, and the reference portion ST may be located on the light emission side surface. On the other hand, the reference portion ST corresponding to the reflecting mirror 332 is located on the surface of the groove portions 5321 and 5322 opposite to the light incident side. However, the present invention is not limited thereto, and the reference portion ST may be located on the light incident side surface.

  In the above-described embodiment, the end on the reference portion ST side corresponding to the inclined portions 5213, 5214, 5233, 5234, 5323, and 5324 (for example, the end portion SL1 in the inclined portion 5233) is a surface on which the reference portion ST is located ( It is assumed that it is separated from the reference plane SP). However, the present invention is not limited thereto, and the end portion on the reference portion ST side may be connected to a surface on which the reference portion ST is located.

  In the above embodiment, the inclined portions 5213, 5214, 5233, 5234, 5323, 5324 and the pressing portions 63, 64 are in contact with the outer portion of the light incident area in the mirror to be pressed. However, the present invention is not limited to this, and the contact portion of the inclined portion and the pressing portion is a position where a part of light is incident, for example, a position where the amount of incident light is low or a position where light not used for image formation is incident. It may be.

  In the above embodiment, two inclined portions (first inclined portions) and two pressing portions are provided for one pressing object. However, the configuration is not limited to this, and there may be three configurations in which the pressing target is pressed against the reference portion. For example, two inclined portions and one pressing portion may be provided for one pressing target, and one inclined portion and two pressing portions may be provided for one pressing target. In addition, as long as one pressing target can be appropriately pressed and held on the reference portion, the one inclined portion and one pressing portion may be provided.

  In the said embodiment, the press parts 62-64 were given the elasticity which can be elastically deformed along + Y direction by the periphery being notched. However, the present invention is not limited to this, and a configuration in which the pressing portions 62 to 64 press and bias the target to be pressed to the reference portion ST by providing an elastic body at a portion where the inclined portions 621 to 641 are located in the pressing portions 62 to 64. It is good. Furthermore, as long as the pressing target can maintain the state in contact with the reference portion ST, the pressing portions 62 to 64 do not necessarily urge the pressing target to the reference portion ST. That is, the pressing parts 62 to 64 may not have elasticity.

In the above embodiment, the projector 1 is configured to include the three light modulation devices 343 (343R, 343G, and 343B). However, the present invention is not limited to this, and the present invention can also be applied to a projector using two or less or four or more light modulation devices.
In the above-described embodiment, the configuration in which the image projection device 3 has the substantially L shape in plan view illustrated in FIG. 1 has been described. However, the configuration is not limited thereto, and the image projection device 3 may adopt a configuration having a substantially U shape in plan view, for example. Further, the optical components employed in the image projection apparatus 3 are not limited to the configuration illustrated in FIG. 1, and other configurations and layouts may be employed.

  In the above embodiment, the light modulation device 442 having a transmissive liquid crystal panel having a different light incident surface and light emitting surface is used. However, the light modulating device 442 has a reflective liquid crystal panel having the same light incident surface and light emitting surface. You may employ | adopt a light modulation apparatus. In addition, as long as the light modulation device can modulate an incident light beam and form an image according to image information, a device using a micromirror, for example, a device using a DMD (Digital Micromirror Device) or the like can be used. You may employ | adopt a light modulation apparatus.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 3 ... Image projection apparatus, 321, 323 ... Dichroic mirror (optical component), 332 ... Reflection mirror (optical component), 4 ... Optical component housing, 5 ... Component storage member (component storage member), 5A ... Bottom part, 5B ... Side wall, 5C ... Opening part, 521,523,532 ... Mirror arrangement part, 5211,5212,5231,5232,5321,5322 ... Groove part, 5213,5214,5233,5234,5323,5324 ... Inclined Part (first inclined part), 6 ... lid member, 63, 64 ... pressing part, 631, 641 ... inclined part (second inclined part), α ... crossing angle, AR1 ... light incident region, P1, P2 ... extension surface , SL ... inclined surface, SL1 ... end, SP ... reference surface (surface on which the reference portion is located), ST ... reference portion, + D1 ... direction (first direction), + D2 ... direction (second direction).

Claims (11)

Optical components,
A component housing member for housing the optical component;
A lid member combined with the component housing member,
The component housing member is
A groove in which the optical component is disposed;
A reference portion that is located in the groove and is in contact with the optical component;
A first inclined part that is inclined with respect to the reference part and positions the optical component disposed in the groove part at a position in contact with the reference part,
The said cover member has a press part which presses the said optical component in the said reference | standard part, The projector characterized by the above-mentioned. The projector according to claim 1.
The projector is characterized in that the first inclined portion is inclined in a direction away from the lid member toward the reference portion. The projector according to claim 1 or 2,
The intersection angle between the extended surface of the surface on which the inner surface of the groove portion is formed and the reference portion is located and the extended surface of the inclined surface of the first inclined portion is an angle in the range of 10 ° or more and 25 ° or less. The projector characterized by being. In the projector as described in any one of Claims 1-3,
The reference portion is located on either the light incident side surface or the light emission side surface of the optical component inserted into the groove portion on the inner surface of the groove portion,
The projector is characterized in that the first inclined portion is located on a bottom surface portion of the component housing member that faces the lid member. The projector according to claim 4,
The projector according to claim 1, wherein the reference unit is located on a surface on the light incident side. The projector according to claim 4 or 5,
The projector is characterized in that an end portion on the reference portion side of the first inclined portion is separated from a surface on which the reference portion is located on the inner surface of the groove portion. The projector according to any one of claims 1 to 6,
The projector according to claim 1, wherein the first inclined portion and the pressing portion are in contact with an outer portion of a light incident area in the optical component. The projector according to any one of claims 1 to 7,
The pressing portion abuts on the optical component, and when the lid member is combined with the component housing member, the protrusion amount in the direction from the lid member toward the component housing member decreases as it moves toward the reference portion. A projector having a second inclined portion. The projector according to claim 8, wherein
The second inclined portion is at least one of a first direction toward the reference portion, a second direction intersecting each of the first direction and the direction from the lid member toward the component housing member. A projector having a curved surface shape curved along the axis. The projector according to any one of claims 1 to 9,
The lid member has a plurality of the pressing portions,
One of the plurality of pressing portions presses a portion on one end side in the end portion on the lid member side in the optical component,
The other one of the plurality of pressing portions presses a portion on the other end side of the end portion on the lid member side in the optical component. The projector according to any one of claims 1 to 10,
The projector is characterized in that a periphery of the pressing portion is cut out.

Images