JP2021126629A - Light source device, and particle movement method - Google Patents

Abstract

To provide a light source device that can catch particles and move them to any place.SOLUTION: A light source device has a first light emitting element that emits a first pencil of rays and forms a first cavity using the first pencil of rays, and a second light emitting element that emits a second pencil of rays and moves particles caught in the first cavity using the second pencil of rays. The first light emitting element and the second light emitting element move particles using the first pencil of rays and the second pencil of rays.SELECTED DRAWING: Figure 1

Description

The present invention relates to a light source device and a method of moving particles.

For example, in an electronic device such as a projector, particles of foreign matter may enter the inside of the housing through an opening such as a vent provided in the housing. If this type of particles enters the inside of the housing, problems such as deterioration of performance and reliability of electronic devices may occur.

In Patent Document 1 below, two radiation pressure generation beams are synchronously scanned and irradiated to form a space in which radiation pressure does not act between the two radiation pressure generation beams, and the two radiation pressure generation beams are formed. A method for arranging fine particles that exists between them is disclosed, in which a plurality of fine particles existing in between are captured in a space where the radiation pressure does not act by radiation pressure and arranged at a predetermined position.

Japanese Unexamined Patent Publication No. 2001-232182

In the method described in Patent Document 1, the particles can be arranged, but it is difficult to capture the particles and move them to an arbitrary place.

In order to solve the above problems, the light source device according to one aspect of the present invention has a first light emitting element that emits a first ray bundle and forms a first cavity by the first ray bundle, and a second ray bundle. The first light emitting element and the second light emitting element are provided with a second light emitting element for moving particles captured in the first cavity by the second light bundle. And the second ray bundle move the particles.

In the method of moving particles in one embodiment of the present invention, the first cavity is formed by the first ray bundle, and the particles captured in the first cavity are moved by the second ray bundle.

It is a perspective view which shows the schematic structure of the light source apparatus of 1st Embodiment. It is a schematic diagram for demonstrating the light pressure acting on the object which has a relatively low light transmittance. It is a schematic diagram for demonstrating the light pressure acting on the object which has a relatively high light transmittance. It is a perspective view which shows the schematic structure of the light source apparatus of 2nd Embodiment. It is a perspective view which shows the schematic structure of the light source apparatus of 3rd Embodiment. It is a figure which shows the state which the spread angle of each ray bundle changed from the state of FIG. 5 in the light source apparatus of 3rd Embodiment.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
In each of the following drawings, in order to make each component easy to see, the scale of dimensions may be different depending on the component.

FIG. 1 is a perspective view showing a schematic configuration of the light source device of the first embodiment.
As shown in FIG. 1, the light source device 10 of the present embodiment includes a first light emitting element 11, a second light emitting element 12, and a photosynthetic element 13. The light source device 10 of the present embodiment is mounted on an electronic device such as a projector and is used for removing particles inside the housing of the electronic device.

The first light emitting element 11 is composed of a laser light source that emits a first light beam bundle L11. The first ray bundle L11 has a cylindrical shape in which a region along the central axis of the first ray bundle L11 is hollow. That is, the cross-sectional shape of the first ray bundle L11 perpendicular to the central axis C1 is annular. The wavelength band of the first ray bundle L11 is not particularly limited.

Although the configuration for generating a cylindrical light bundle is not shown, for example, the reflected light when a light bundle from a laser light source is applied to a rod-shaped reflective member from a direction intersecting the central axis of the reflective member. Has a conical shape. By parallelizing this reflected light with a lens or the like, a cylindrical light bundle can be formed. Alternatively, a plurality of light emitting elements may be used to form a cylindrical light beam bundle, or an optical element such as a galvanometer mirror may be used to scan the light ray bundle in a cylindrical shape. In the present specification, the hollow region along the central axis of the ray bundle is referred to as a cavity. The first light emitting element 11 emits the first light beam bundle L11, and the first light beam bundle L11 forms the first cavity S1.

The second light emitting element 12 is composed of a laser light source that emits a second light beam bundle L12. The second ray bundle L12 has a columnar shape centered on the central axis C2 of the second ray bundle L12. The second light emitting element 12 is arranged so that the emission direction of the second light beam bundle L12 intersects the emission direction of the first light beam bundle L11. In the present embodiment, the emission direction of the second ray bundle L12 and the emission direction of the first ray bundle L11 are orthogonal to each other. Although the details will be described later, the second light emitting element 12 emits the second ray bundle L12, and the particles M captured in the first cavity S1 are moved by the second ray bundle L12.

The photosynthetic element 13 has a property of transmitting the first light beam bundle L11 from the first light emitting element 11 and reflecting the second light beam bundle L12 from the second light emitting element 12. The photosynthetic element 13 is arranged so as to form an angle of 45 ° with respect to each of the emission direction of the first ray bundle L11 and the emission direction of the second ray bundle L12.

Specifically, for example, when the first light emitting element 11 emits the first light beam bundle L11 of P-polarized light to the photosynthetic element 13, and the second light emitting element 12 emits the second light beam bundle L12 of S polarized light to the photosynthetic element 13. The photosynthetic element 13 may be composed of a polarized light-synthesizing element that transmits P-polarized light and reflects S-polarized light. Alternatively, when the first light emitting element 11 emits the first light beam bundle L11 in the first wavelength band and the second light emitting element 12 emits the second light beam bundle L12 in the second wavelength band different from the first wavelength band. The photosynthetic element 13 may be composed of a dichroic mirror that transmits light in the first wavelength band and reflects light in the second wavelength band. Alternatively, the photosynthetic element 13 may be composed of a half mirror that transmits a part of the light and reflects a part of the other light regardless of the polarization state and the wavelength band. The light source device 10 does not have to include a photosynthetic element as long as the first light beam bundle L11 and the second light beam bundle L12 can be combined without the light emitting elements interfering with each other.

The first ray bundle L11 and the second ray bundle L12 are combined by the photosynthetic element 13, and the combined light L1 travels along the emission direction of the first ray bundle L11. The synthetic light L1 has a configuration in which the second ray bundle L12 is located inside the first cavity S1 formed by the first ray bundle L11. The magnitude relationship between the inner diameter of the cylinder forming the shape of the first ray bundle L11 and the outer diameter of the cylinder forming the shape of the second ray bundle L12 is not particularly limited. However, as will be described later, in order to reliably move the particles M captured in the first cavity S1 by the second ray bundle L12, the outer diameter of the cylinder is the same as the inner diameter of the cylinder or larger than the inner diameter of the cylinder. Larger is desirable.

Although not shown, the light source device 10 may include a sensor that detects the presence of particles M on the optical path of the synthetic light L1. Further, the light source device 10 may include a mirror that bends the optical path of the combined light L1. Further, the light source device 10 may be installed inside the housing of the electronic device, or may be installed outside the housing.

The present inventor has experimentally confirmed that particles such as foreign substances cannot enter the inside of a light beam bundle having a predetermined intensity. From this result, the present inventor investigated a method of moving particles existing inside the housing of an electronic device or the like and discharging them to the outside. As a result, if a light beam bundle having a cavity is formed, the particles are inside the cavity. I came up with the idea of being able to capture. That is, when particles are suspended in the air, when a light bundle having a cylindrical or conical shape is formed so as to surround the particles, the particles receive a force called light pressure from the light bundle and the light bundle receives a force called light pressure. I came up with the idea that I couldn't get out of. The phenomenon that particles cannot enter the inside of the light bundle is not often seen in the light from a light emitting element such as a discharge lamp or a light emitting diode, but is remarkably seen in the laser light. The particles are, for example, dust or dust, salt, organic matter, etc. existing in the air.

The light pressure will be described in more detail with reference to FIGS. 2 and 3.
FIG. 2 is a schematic diagram for explaining the light pressure acting on the particles M having a relatively low light transmittance.
When the size of the particles M is several tens of μm or less, the influence of light pressure appears as shown in FIG. Light pressure is the pressure acting on the surface of an object that receives light, which is a type of radiated electromagnetic wave. When light is applied to an object having a relatively low light transmittance, that is, a particle M that does not easily transmit light, the light pressure Po acts on the particle M. For example, when the photon C hits the surface of the particle M having an area S, the light pressure is Po, the reflectance of the surface is k (0 ≦ k ≦ 1), and the incident angle of the photon C is θ. The exerted force F1 is expressed by the following equation (1).

Further, assuming that the straight line passing through the incident point of the photon C and perpendicular to the surface of the particle M is the normal line V, the angle α formed by the direction in which the force F1 acts and the normal line V is expressed by the following equation (2). Will be done.

Next, consider an object having a relatively high light transmittance, that is, a particle M that easily transmits light.
FIG. 3 is a schematic diagram for explaining the light pressure acting on the particles M having a relatively high light transmittance.
As shown in FIG. 3, when the difference between the refractive index n1 of the particle M and the refractive index n2 of the medium around the particle M, for example, air is sufficiently small, the reflection of light is extremely small, so only the refraction is considered. do it. The refractive index n1 is smaller than the refractive index n2.

As shown in FIG. 3, it is assumed that the light rays A and the light rays B are incident on the particles M from different directions. At this time, the light ray A incident on the particle M is refracted at the interface between the particle M having a refractive index n1 and the air having a refractive index n2. As the light ray A is refracted and the momentum of the light ray A changes, the force FA1 that preserves the momentum acts on the particle M in the normal direction with respect to the interface at the incident point Ain of the light ray A. Further, the light ray A passes through the inside of the particle M and is refracted at the interface between the particle M and air even when it is emitted to the outside of the particle M. As the light ray A is refracted and the momentum of the light ray A changes, the force FA2 that preserves the momentum acts on the particle M in the normal direction with respect to the interface at the emission point Aout of the light ray A. As a result, the resultant force FA of the force FA1 and the force FA2 due to the light ray A acts on the particles M in a predetermined direction.

The same applies to the light ray B as well as the light ray A. That is, when the light ray B is incident on the particle M, the force FB1 for preserving the momentum acts on the particle M in the normal direction with respect to the interface at the incident point Bin of the light ray B. Further, when the light ray B passes through the particle M and is emitted from the particle M, the force FB2 for preserving the momentum acts on the particle M in the normal direction with respect to the interface at the emission point Bout of the light ray B. As a result, the resultant force FB of the force FB1 and the force FB2 due to the light ray B acts on the particles M in a predetermined direction.

Therefore, when the light rays A and the light rays B are incident on each other, the resultant force F2 of the force FA and the force FB acts on the particles M in a predetermined direction. As described above, the force F2 based on the light pressure acts on the particles M by the laser light including the light rays A and the light rays B. In the example of FIG. 3, the description schematically focuses on only two light rays A and B, but in reality, since a larger number of light rays are incident on the particle M, the light from the plurality of light rays is emitted. The combined force F2 acts on the particles M.

In addition to the force F2 based on light pressure, gravity and buoyancy also act on the particles M. Therefore, the particle M is captured in a region where the difference between the gravity acting on the particle M and the buoyancy and the force F2 based on the light pressure are balanced. In FIG. 3, since the focal position FU is located above the center G of the particle M, the force F2 acts on the particle M in the direction toward the focal position FU. The particles are captured in the region where the force F2, gravity and buoyancy are balanced.

In FIG. 3, the case where the focal position FU is above the center G of the particle M has been described as an example, but the force F2 based on the light pressure acting on the particle M is the position of the particle M with respect to the focal position FU. Depends on. Even if the focal position FU is below the center G of the particle M, or even if the focal position FU and the center G of the particle M are deviated in the XY direction, the particle M is directed toward the focal position FU. The force F2 acts.

In the present specification, the above-mentioned force F1 and force F2 are collectively referred to as light pressure. Regardless of the direction in which the light is applied to the particle M, the light pressure acts in the direction in which the light pushes the particle M along the traveling direction of the light. In addition, the magnitude of light pressure correlates with light density and light density distribution, and light pressure due to light with high light density and steep edge of light density distribution has low light density and edge of light density distribution. It is larger than the light pressure of gentle light. Therefore, the light pressure due to the laser light is larger than the light pressure due to the light from the lamp or the light from the LED.

In the present embodiment, when the light source device 10 includes the above sensor, when the sensor detects the presence of the particles M in the optical path of the synthetic light L1, the first light emitting element 11 causes the particles by the first ray bundle L11. A first ray bundle L11 having a cylindrical shape is emitted so as to surround M. As a result, the particles M receive the light pressure from the first ray bundle L11 and cannot escape to the outside of the first ray bundle L11. That is, the particles M existing in the first cavity S1 are captured by the first ray bundle L11. The first light emitting element 11 forms the first light beam bundle L11 in a cylindrical shape and captures the particles M in the first cavity S1. Even when the light source device 10 does not have a sensor, the first light emitting element 11 may emit the first light beam bundle L11 at an arbitrary time point.

On the other hand, the second light emitting element 12 emits a second light beam bundle L12 having a columnar shape. At this time, the particle M receives the light pressure from the second ray bundle L12 and moves inside the first cavity S1 along the traveling direction of the second ray bundle L12. The second light emitting element 12 forms the second light beam bundle L12 in a columnar shape and moves the particles M captured in the first cavity S1. In this way, the first ray bundle L11 acts to define the movement path and movement range of the particle M. That is, the first light emitting element 11 and the second light emitting element 12 move the particles M by the first light beam bundle L11 and the second light ray bundle L12.

In the method of moving the particles M of the present embodiment, the first cavity S1 is formed by the first ray bundle L11, and the particles M captured in the first cavity S1 by the second ray bundle L12 are moved. Specifically, the first ray bundle L11 is formed in a cylindrical shape to capture the particles M in the first cavity S1, and the second ray bundle L12 is formed in a cylindrical shape and captured in the first cavity S1. To move.

[Effect of the first embodiment]
As described above, according to the light source device 10 of the present embodiment, the first light emitting element 11 and the second light emitting element 12 can collectively capture a plurality of particles M and move them to an arbitrary place. By using this light source device 10, the particles M can be removed from the inside of the housing of the electronic device, and problems such as deterioration of the performance and reliability of the electronic device can be suppressed.

When the light source device 10 of the present embodiment is applied to a projector, the following effects can be obtained. Since particles M such as dust in the housing can be removed, the transmittance of various optical elements can be maintained, the life of the optical elements can be extended, and the product quality can be maintained. Further, when various thin films are used for the optical element, deterioration of the thin film due to heat generation of the particles M can be suppressed, the life of the optical element can be extended, and the product quality can be maintained. Further, since the temperature rise of the optical element can be suppressed, it is possible to avoid deviation of the color balance due to the disturbance of polarized light, damage to the optical element, and the like. Further, since the particles M such as dust can be removed, the noise of the fan can be reduced. In addition, dust and the like can be moved regardless of the size of the projector.

Further, according to the method of moving the particles M of the present embodiment, a plurality of particles M can be collectively captured by using the first ray bundle L11 and the second ray bundle L12 and can be moved to an arbitrary place. By using this method, the particles M can be removed from the inside of the housing of the electronic device, and problems such as deterioration of the performance and reliability of the electronic device can be suppressed.

[Second Embodiment]
Hereinafter, the second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a perspective view showing a schematic configuration of the light source device of the second embodiment.
In FIG. 4, the same components as those in FIG. 1 used in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 4, the light source device 20 of the present embodiment includes a first light emitting element 21 and a second light emitting element 12.

The first light emitting element 21 is composed of a laser light source that emits a first light beam bundle L21. The first ray bundle L21 has a conical shape in which a region along the central axis C1 of the first ray bundle L21 is hollow. That is, the cross-sectional shape perpendicular to the central axis C1 of the first ray bundle L21 is annular, and the diameter of the ring increases as the first ray bundle L21 progresses. The first light emitting element 21 may be configured so that the spread angle α of the first ray bundle L21 can be changed. In this way, the first light emitting element 21 emits the first light beam bundle L21, and the first light beam bundle L21 forms the first cavity S1.

Although the configuration for generating the conical light bundle is omitted, as described in the first embodiment, for example, the light bundle from the laser light source is used as a rod-shaped reflective member and as the central axis of the reflective member. The reflected light when irradiated from the intersecting directions may be used. The first light emitting element 21 emits the first light beam bundle L21, and the first light beam bundle L21 forms the first cavity S1.

The second light emitting element 12 is composed of a laser light source that emits a second light beam bundle L12. The second ray bundle L12 has a columnar shape centered on the central axis C2 of the second ray bundle L12. The second light emitting element 12 is arranged so that the emission direction of the second light beam bundle L12 faces the emission direction of the first light beam bundle L21. Further, the central axis C1 of the first ray bundle L21 and the central axis C2 of the second ray bundle L12 are located on substantially one straight line. In this way, the second light emitting element 12 emits the second ray bundle L12, and the particles M captured in the first cavity S1 are moved by the second ray bundle L12.

In the present embodiment as well, as in the first embodiment, the light source device 20 may include a sensor for detecting the particles M, or a photosynthetic element that synthesizes the first ray bundle L21 and the second ray bundle L12. You may have.

In the present embodiment, when the light source device 20 includes the above sensor, when the sensor detects the presence of the particles M in the optical path of the synthetic light L2, the first light emitting element 21 causes the particles by the first ray bundle L21. A first ray bundle L21 having a hollow conical shape is emitted so as to surround M. As a result, the particles M receive the light pressure from the first ray bundle L21 and cannot escape to the outside of the first ray bundle L21. That is, the particles M existing in the first cavity S1 are captured by the first ray bundle L21. When the first light emitting element 21 is configured so that the spread angle α of the first light beam bundle L21 can be changed, the first light emitting element 21 emits the first light beam bundle L21 and then narrows the spread angle α to narrow the particles. The range of the first cavity S1 in which M can exist can be reduced.

On the other hand, the second light emitting element 12 emits a second light beam bundle L12 having a columnar shape. At this time, the particle M receives the light pressure from the second ray bundle L12 and moves inside the first cavity S1 along the traveling direction of the second ray bundle L12. In the case of the present embodiment, the shape of the first cavity S1 is conical, and the traveling direction of the first ray bundle L21 and the traveling direction of the second ray bundle L12 face each other. Therefore, the particle M is the first light emitting element 21. It moves in the direction of approaching, that is, in the direction in which the first cavity S1 becomes narrower. The first light emitting element 21 may be arranged so as to emit the first light beam bundle L21 from the lower side to the upper side in the vertical direction. In that case, regardless of the presence or absence of the second ray bundle L12, the particles M suspended in the air move in the direction in which the first cavity S1 becomes narrower due to its own weight.

In the present embodiment, when the light source device 20 is installed outside the housing of the electronic device, the particles M are discharged to the outside of the housing when the first cavity S1 moves to the narrowing region. Further, after the particles M are collected in a part of the region on the narrow side of the first cavity S1, for example, a cylindrical third light bundle is emitted from a third light emitting element (not shown) and moved to another place. It may be configured. Alternatively, after the particles M are collected in a part of the region on the narrow side of the first cavity S1, the particles M may be recovered by using an arbitrary recovery member using an adhesive or the like.

In the method of moving the particles M of the present embodiment, the first cavity S1 is formed by the first ray bundle L21, and the particles M captured in the first cavity S1 by the second ray bundle L12 are moved. Specifically, the first ray bundle L21 is formed in a hollow conical shape to capture the particles M in the first cavity S1, and the second ray bundle L12 is formed in a columnar shape and captured in the first cavity S1. Move M.

[Effect of the second embodiment]
Also in the light source device 20 of the present embodiment, a plurality of particles M can be collectively captured by using the first light emitting element 21 and the second light emitting element 12, and can be moved to an arbitrary place, and as a result, an electronic device. It is possible to obtain the same effect as that of the first embodiment, such as suppressing defects such as performance deterioration and reliability deterioration.

Further, also in the method of moving the particles M of the present embodiment, a plurality of particles M can be collectively captured by using the first ray bundle L21 and the second ray bundle L12 and moved to an arbitrary place. As a result, it is possible to obtain the same effect as that of the first embodiment, such as suppressing defects such as deterioration of performance and reliability of the electronic device.

[Third Embodiment]
Hereinafter, the third embodiment of the present invention will be described with reference to FIGS. 5 and 6.
FIG. 5 is a perspective view showing a schematic configuration of the light source device of the third embodiment. FIG. 6 is a diagram showing a state in which the spread angle of each light beam bundle is changed from the state of FIG. 5 in the light source device of the third embodiment.

As shown in FIGS. 5 and 6, the light source device 30 of the present embodiment includes a first light emitting element 31 and a second light emitting element 32.

The first light emitting element 31 is composed of a laser light source that emits a first light beam bundle L31. The first ray bundle L31 has a conical shape in which a region along the central axis C1 of the first ray bundle L31 is hollow. That is, the cross-sectional shape perpendicular to the central axis C1 of the first ray bundle L31 is annular, and the diameter of the ring increases as the first ray bundle L31 progresses. In this way, the first light emitting element 31 emits the first light beam bundle L31, and the first light beam bundle L31 forms the first cavity S1. Further, the first light emitting element 31 is configured so that the spread angle α1 of the first light beam bundle L31 can be changed.

The second light emitting element 32 is composed of a laser light source that emits a second light beam bundle L32. Like the first ray bundle L31, the second ray bundle L32 has a conical shape in which the region along the central axis C2 of the second ray bundle L32 is hollow. In this way, the second light emitting element 32 emits the second light beam bundle L32, and the second light beam bundle L32 forms the second cavity S2. Further, the second light emitting element 32 is configured so that the spread angle α2 of the second ray bundle L32 can be changed.

The first light emitting element 31 and the second light emitting element 32 are arranged so that the central axis C1 and the central axis C2 intersect each other, and the first light beam bundle L31 and the second light ray bundle L32 intersect each other. Therefore, in the region where the first ray bundle L31 and the second ray bundle L32 intersect with each other, a third cavity S3 surrounded by the first ray bundle L31 and the second ray bundle L32 is formed. That is, the third cavity S3 is formed by the first cavity S1 and the second cavity S2. In the case of the present embodiment, the particles M are captured by the third cavity S3 formed by the first cavity S1 and the second cavity S2.

As shown in FIG. 5, when the spread angle α1 of the first ray bundle L31 and the spread angle α2 of the second ray bundle L32 are relatively large, the volume of the third cavity S3 is relatively large. On the other hand, as shown in FIG. 6, when the spread angle α1 of the first ray bundle L31 and the spread angle α2 of the second ray bundle L32 are relatively small, the volume of the third cavity S3 is relatively small.

In the present embodiment, when the light source device 30 includes the above sensor, when the sensor detects the presence of the particles M on the optical path of the first ray bundle L31, as shown in FIG. 5, the first light emitting element 31 Injects a hollow conical first ray bundle L31 having a first cavity S1 so as to surround the particles M by the first ray bundle L31. On the other hand, the second light emitting element 32 emits a hollow conical second ray bundle L32 having the second cavity S2 so as to surround the particles M by the second ray bundle L32. As a result, the particle M receives the light pressure from the first ray bundle L31 and the second ray bundle L32, and cannot escape to the outside of the third cavity S3. That is, the particles M are captured in the third cavity S3 by the first ray bundle L31 and the second ray bundle L32.

Next, as shown in FIG. 6, the volume of the third cavity S3 is reduced by reducing the spread angle α1 of the first ray bundle L31 and the spread angle α2 of the second ray bundle L32, and the particles M are narrowed. It is captured in the third cavity S3.

In the case of the present embodiment, the position of the third cavity S3 can be moved by changing the emission direction of the second ray bundle L32 with respect to the emission direction of the first ray bundle L31. By moving the third cavity S3 to the outside of the housing of the electronic device, the particles M can be discharged to the outside of the housing. Further, after collecting the particles M in the third cavity S3, for example, a third ray bundle emitted from a third light emitting element (not shown) may be used to move the particles to another place. Alternatively, after the particles M are collected in the third cavity S3, the particles M may be recovered by using an arbitrary recovery member using an adhesive or the like.

In the method of moving the particles M of the present embodiment, the first cavity S1 is formed by the first ray bundle L31, and the particles M captured in the first cavity S1 by the second ray bundle L32 are moved. Specifically, the second cavity S2 is formed by the second ray bundle L32, and the particles M are captured by the third cavity S3 formed by the first cavity S1 and the second cavity S2.

[Effect of Third Embodiment]
Also in the light source device 30 of the present embodiment, a plurality of particles M can be collectively captured by using the first light emitting element 31 and the second light emitting element 32 and moved to an arbitrary place, and as a result, an electronic device. It is possible to obtain the same effect as that of the first embodiment, such as suppressing defects such as performance deterioration and reliability deterioration.

Further, also in the method of moving the particles M of the present embodiment, a plurality of particles M can be collectively captured by using the first ray bundle L31 and the second ray bundle L32 and moved to an arbitrary place. As a result, it is possible to obtain the same effect as that of the first embodiment, such as suppressing defects such as deterioration of performance and reliability of the electronic device.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the first light emitting element emits a cylindrical or hollow conical first ray bundle, and the second light emitting element emits a cylindrical or hollow conical second ray bundle. Instead of this configuration, the first light emitting element emits a polygonal cylindrical or hollow polygonal pyramid first ray bundle, and the second light emitting element emits a polygonal columnar or hollow polygonal pyramid second ray bundle. It may be a configuration.

In addition, the specific description of the shape, number, arrangement, material, and the like of each component of the light source device is not limited to the above embodiment, and can be changed as appropriate. In the above embodiment, an example in which the light source device according to the present invention is mounted on an electronic device such as a projector is shown, but the present invention is not limited thereto.

The light source device of one aspect of the present invention may have the following configuration.
The light source device according to one aspect of the present invention emits a first light emitting element that emits a first ray bundle to form a first cavity by the first ray bundle, and emits a second ray bundle to emit the second ray bundle. A second light emitting element for moving particles captured in the first cavity is provided, and the first light emitting element and the second light emitting element are described by the first light beam bundle and the second light ray bundle. The particles may be moved.

In the light source device of one aspect of the present invention, the first light emitting element forms the first light beam bundle in a tubular shape and captures the particles in the first cavity, and the second light emitting element is the first light emitting element. The two light bundles may be formed in a columnar shape to move the particles captured in the first cavity.

In the light source device according to one aspect of the present invention, the second light emitting element is formed by forming a second cavity by the second light beam bundle, and the third cavity formed by the first cavity and the second cavity. Particles may be captured.

In the method of moving particles in one embodiment of the present invention, the first cavity may be formed by the first ray bundle, and the particles captured in the first cavity may be moved by the second ray bundle.

In the method for moving particles according to one aspect of the present invention, the first ray bundle is formed in a tubular shape to capture the particles in the first cavity, and the second ray bundle is formed into a columnar shape to form the first ray bundle. Particles trapped in the cavity may be moved.

In the method of moving particles according to one aspect of the present invention, the second cavity is formed by the second ray bundle, and the particles are captured by the third cavity formed by the first cavity and the second cavity. You may.

10, 20, 30 ... Light source device 11,21,31 ... First light emitting element, 12, 32 ... Second light emitting element, L11, L21, L31 ... First ray bundle, L12, L32 ... Second ray bundle, M ... Particles, S1 ... 1st cavity, S2 ... 2nd cavity, S3 ... 3rd cavity.

Claims (6)

A first light emitting element that emits a first light beam bundle and forms a first cavity by the first light beam bundle.
A second light emitting element that emits a second ray bundle and moves particles captured in the first cavity by the second ray bundle, and a second light emitting element.
With
The first light emitting element and the second light emitting element are light source devices for moving the particles by the first light beam bundle and the second light ray bundle. The first light emitting element forms the first light beam bundle in a tubular shape and captures the particles in the first cavity.
The light source device according to claim 1, wherein the second light emitting element forms the second light beam bundle in a columnar shape to move particles trapped in the first cavity. The second light emitting element forms a second cavity by the second light beam bundle, and the second light emitting element forms a second cavity.
The light source device according to claim 1, wherein the particles are captured by a third cavity formed by the first cavity and the second cavity. The first cavity is formed by the first ray bundle,
A method for moving particles, which moves particles captured in the first cavity by a second light bundle. The first ray bundle is formed into a tubular shape to capture the particles in the first cavity, and the particles are captured in the first cavity.
The method for moving particles according to claim 4, wherein the second ray bundle is formed in a columnar shape to move the particles captured in the first cavity. A second cavity is formed by the second ray bundle,
The method for moving particles according to claim 4, wherein the particles are captured by the third cavity formed by the first cavity and the second cavity.

Images