TW201403131A - Phosphor light source device - Google Patents

Abstract

The objective of the present invention is to provide a phosphor light source device with which a high light output can be obtained and with which light having a uniform intensity distribution can be emitted. With this phosphor light source device, which excites a phosphor with light emitted from an excitation light source and thus emits the light that is output from the phosphor, a hologram element is arranged at a position where the hologram element can be illuminated with light from the excitation light source, from a direction along the illumination direction of a reference light used when the hologram element is manufactured, this position being one at which a reproduction image recorded in the hologram element is generated on the phosphor. In addition, a hologram element which generates a reproduction image having a uniform light intensity distribution in the reproduction image region of the phosphor is used.

Description

Phosphor light source device

The present invention relates to a phosphor light source device that excites a phosphor by light emitted from a light source and emits light emitted from the phosphor light source device. More specifically, the phosphor light source device of the present invention is used as, for example, a light source for a projector device including a spatial modulation element such as a liquid crystal display device or a digital micromirror device.

In recent years, research on the use of a phosphor light source device as a light source for a projector device has been progressing. A phosphor light source device is a device that excites a phosphor by light emitted from a light source and emits light emitted from the phosphor light source device, for example, using a solid such as a light emitting diode or a semiconductor laser. The light source serves as an excitation source for the phosphor.

In the above-described phosphor light source device, a common structure includes, for example, two excitation light sources, and a phosphor that is excited by the light emitted from the excitation light source to emit light, and the fluorescent system is provided only for each excitation. The light emitted from the light source overlaps (see Patent Document 1). Further, for example, a phosphor light source device having a structure in which a phosphor is disposed in a strip shape on an inner surface of a cylindrical member having a reflecting surface as an inner surface, and light emitted from an excitation light source is passed from a cylinder The light incident port on the side surface of the member is incident on the cylindrical member to excite the phosphor, and the light emitted from the phosphor is emitted from the end surface of the tubular member (see Patent Document 2).

[Previous Technical Literature] [Patent Document]

[Patent Document 1] JP-A-2011-165547

[Patent Document 2] JP-A-2011-253749

However, in the phosphor light source device described in Patent Document 1, only the light in the region where the light emitted from the two excitation light sources overlaps is used, so that the light emitted from the excitation light source cannot be effectively utilized, and also Insufficient luminous efficiency is not obtained. Therefore, when the phosphor light source device is used as a light source for a projector device, there is a problem that the amount of light is insufficient.

Further, in the fluorescent light source device described in Patent Document 2, the intensity distribution of the fluorescent light emitted from the end portion of the cylinder is not uniform. When it is used as a light source for a projector device, there is a problem that although the light source must be displayed in a uniform state in a substantially rectangular image display device, the fluorescence intensity distribution is For example, it will form Gaussian The shape of the distribution cannot effectively utilize the light of the surrounding portion of the above distribution, thereby causing the efficiency of the optical system to become low. Furthermore, there is also a problem that the intensity distribution of the excitation light is not completely formed into a uniform state, and the intensity of the luminescence is partially lowered, and the phosphor itself is also damaged.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a phosphor light source device capable of obtaining high light output power and capable of emitting light having a uniform light intensity distribution.

A phosphor light source device according to the present invention includes: a phosphor; and an excitation light source that emits light for exciting the phosphor and emits light emitted from the phosphor, and is characterized by:

The hologram element is positioned at a position where the light emitted from the excitation light source is irradiated along a direction in which the reference beam used in manufacturing the hologram element is irradiated, and is disposed to generate a reproduced image recorded on the hologram element. The position on the aforementioned phosphor,

The hologram element is used to generate a reproduced image in which a light intensity distribution is uniform in a reproduced image region on the phosphor.

The phosphor light source device of the present invention has a plurality of excitation light sources, and is preferably configured such that each of the laser light emitted from the respective excitation light sources is generated at each of the irradiation positions on the hologram element. The image is reproduced and superimposed on the incident surface of the aforementioned phosphor.

Further, the phosphor light source device of the present invention has an optimum structure The optical element has an optical element that scans light emitted from the excitation light source on a light incident surface of the hologram element.

A phosphor light source device according to the present invention includes: a phosphor; and a plurality of excitation light sources that emit light for exciting the phosphor and emit light emitted from the phosphor, wherein:

The plurality of hologram elements are tied at a position where the light emitted by the corresponding excitation light source is irradiated along the irradiation direction of the reference beam used when the hologram element is manufactured, and is disposed to make the weight recorded on the hologram element The position of the image on the aforementioned phosphor,

The respective reproduced images generated by the plurality of hologram elements are superimposed to generate a composite reproduced image in which the light intensity distribution is uniform in the reproduced image region on the phosphor.

The phosphor light source device of the present invention can be configured as a hologram element using an element in which a reproduced image generated by illuminating a rectangular region on the phosphor is recorded.

The phosphor light source device according to the present invention is produced by irradiating light emitted from an excitation light source onto a hologram element. Here, the hologram element is used to generate a reproduced image in which the light intensity distribution is uniform in the reproduced image region on the phosphor. The reproduced image (hologram) of the hologram element is used as the excitation light of the phosphor, and is configured to make the light intensity distribution in the reproduced image area on the phosphor uniform. It is generated on the phosphor. Thereby, the phosphor can be efficiently excited to emit Light, and, for example, can emit light having a high uniformity light intensity distribution in the shape of a top hat. Further, by forming the reproduced image generated by the hologram element for exciting the phosphor to have a light intensity distribution in a uniform state, it is possible to prevent the luminous efficiency of the phosphor from being locally lowered or to cause a phosphor Problems such as damage itself occur.

Further, each of the plurality of excitation light sources emits laser light, and each of the reproduced images generated at the respective irradiation positions on the hologram element is superimposed on the phosphor, and the synthesized composite image is reproduced. The image is used as the excitation light of the phosphor. With the above configuration, even if the illumination intensity of the hologram element by the individual excitation light sources is small, the composite reproduced image generated on the phosphor body is formed to have sufficient high luminance. Thereby, the amount of light of the light emitted from the phosphor can be increased, a high light output can be obtained, and the heat load generated on the hologram element can be reduced.

10‧‧‧Laser light injection mechanism

11‧‧‧Laser light source

12‧‧‧Parallel light lens

15‧‧‧focus lens

20, 20A, 20B, 20C‧‧‧ holographic components (reflective)

21‧‧‧holographic components (penetrating type)

30‧‧‧Fertior

31‧‧‧Transmissive substrate

40A, 40B‧‧‧ scan mirror

45‧‧‧ convex lens

H1, H2, H3, Ha, Hi‧‧‧ redisplayed images

X‧‧‧Redisplayed image area

50R‧‧‧1st color light source

50G‧‧‧2nd color light source

50B‧‧‧3rd color light source

60‧‧‧Color synthetic optical components

70‧‧‧ Spatial Modulation Components

80‧‧‧Synthetic optical imaging projection mechanism

S‧‧‧ screen

P‧‧‧Optical imaging

Fig. 1 is a view showing a schematic configuration of an example of a phosphor light source device of the present invention.

Fig. 2 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention.

Fig. 3 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention.

Fig. 4 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention.

Fig. 5 is a view showing a schematic configuration of an example of a projector device on which the phosphor light source device of the present invention is mounted.

Hereinafter, embodiments of the present invention will be described in detail.

Fig. 1 is a view showing a schematic configuration of an example of a phosphor light source device of the present invention. The phosphor light source device includes a laser light emitting mechanism 10 and a phosphor 30, and the laser light emitted from the laser light emitting device 10 excites the phosphor 30 and emits the phosphor 30. The light emitted.

The laser light emitting mechanism 10 includes a plurality of laser light sources 11 constituting an excitation light source for emitting light for exciting the respective phosphors 30, and a plurality of parallel light lenses 12, and the light beams disposed at the respective laser light sources 11 are emitted. At a position on the front side of the direction, the light emitted from the laser light source 11 at a predetermined spread angle is formed into substantially parallel light.

Each of the laser light sources 11 is composed, for example, of a semiconductor laser for emitting laser light having the same oscillation wavelength, and is arranged such that the optical axes of the emitted laser light extend in parallel with each other.

Each of the parallel optical lenses 12 is disposed such that its optical axis and the optical axis of the corresponding laser light source 11 are aligned.

The phosphor light source device includes, for example, a reflective hologram element 20 that generates a reproduced image (for reproducing a hologram) by the laser light emitted from the laser light emitting mechanism 10. The hologram element 20 is disposed in each of the laser light sources 11 to emit laser light to be manufactured along the hologram At the position where the irradiation direction of the reference beam used in the element 20 is irradiated.

The hologram element 20 is, for example, recorded with a reproduced image (hologram) composed of light (map) for illuminating a predetermined region on the light incident surface of the phosphor 30. Although the reproduced image is not particularly limited, for example, when the phosphor light source device is used as a light source for a projector device having a spatial modulation element, it is preferable to illuminate the phosphor 30. The light is formed by the light in the rectangular area on the light surface. This reason is because the light incident surface of the spatial modulation element is generally formed in a rectangular shape.

Each of the reproduced images H1, H2, and H3 generated from the respective irradiation positions L1, L2, and L3 of the laser light of the hologram element 20 means that the light intensity distribution in the reproduced image area on the phosphor 30 is The image is reproduced in a uniform state and is generated at the same position on the light incident surface of the phosphor 30. That is, each of the reproduced images H1, H2, and H3 is formed to form a composite weight that is superimposed on the phosphor 30 and has a uniform light intensity distribution in the reproduced image region on the phosphor 30. Display the image.

In the present invention, the light intensity distribution exhibits a "uniform state" means that the intensity distribution (error) is within ±10% with respect to the average intensity.

At a position where a composite reproduced image composed of the hologram element 20 is formed, a phosphor 30 is disposed which is excited by a composite reproduced image (excitation light) to emit light.

The phosphor 30 is preferably provided with a cooling means. For example, a heat sink may be used as a cooling means, and the heat radiating plate is provided in surface contact with the light incident surface of the phosphor 30 on the opposite side. By making the above structure, It is possible to prevent the phosphor 30 from becoming overheated, and it is possible to suppress damage or deterioration (deterioration) of the phosphor 30.

In the above-described phosphor light source device, the laser light emitted from each of the laser light sources 11 is formed into parallel light by the parallel light lens 12 and is incident on the hologram element 20. Here, the light distribution characteristic of the laser light incident on the hologram element 20 has, for example, a Gaussian distribution in which a portion having the highest light intensity is formed in the central portion. Thereby, a reproduced image generated from each of the irradiation positions L1, L2, and L3 of the laser light on the hologram element 20 is generated on the light incident surface of the phosphor 30, and each of the reproduced images H1, H2 is displayed. H3 is superposed on the phosphor 30 to form a composite reproduced image. Here, the light intensity distribution of the composite reproduced image formed on the phosphor 30 has, for example, a shape of a top hat (uniform light intensity distribution). Further, the phosphor 30 is excited to emit light by synthesizing the reproduced image, and the light distribution characteristic of the fluorescent light is substantially distributed on the axis C1 perpendicular to the light incident surface of the phosphor 30. The characteristics of the distribution (having a uniform distribution of light distribution) are radiated. The light emitted from the phosphor light source device can be utilized, for example, by the convex lens 45 to form parallel light.

Further, according to the phosphor light source device configured as described above, the reproduced image H1 generated by each of the irradiation positions L1, L2, and L3 of the laser light emitted from the plurality of laser light sources 11 on the hologram element 20 is generated. H2 and H3 are superimposed on the phosphor 30, whereby the generated composite reproduced image is used as the excitation light of the phosphor 30, and the reproduced image is reproduced by synthesizing the image. The light intensity distribution in the region is uniform, and the phosphor 30 can be efficiently excited to emit light, and for example, It is sufficient to emit light having a light intensity distribution with a high uniformity in the shape of a top hat. Further, by using the composite reproduced image generated by the hologram element 20 for exciting the phosphor 30 to have a light intensity distribution in a uniform state, it is possible to prevent the luminous efficiency of the phosphor 30 from being locally lowered or caused. A problem such as damage of the phosphor 30 itself occurs. Further, even if the irradiation light of the laser light irradiated to the hologram element 20 by the individual laser light source 11 is small, the composite reproduced image generated on the phosphor 30 is formed into a synthetic weight having a sufficient high luminance. Display the image. Thereby, the amount of light of the light emitted from the phosphor 30 can be increased to obtain a high light output, and the heat load generated by the hologram element 20 can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made.

For example, it is not limited to use a laser light source composed of a semiconductor laser as an excitation light source, and a light source, an LED, or the like can be used, and the number thereof is not particularly limited. In addition, the excitation light source may also be configured by a combination of a multi-emitter semiconductor laser and a collimating mechanism composed of microlenses.

Further, the phosphor light source device of the present invention may be configured, for example, by providing a plurality of hologram elements each corresponding to a plurality of excitation light sources. In the above configuration, it is also possible that each hologram element does not need to be an element for generating a reproduced image having a uniform light intensity distribution, as long as each of the reproduced images generated by the hologram element can complement each other. The synthetic highlight image generated on the phosphor may have a light intensity distribution in a uniform state. or Alternatively, a transmissive element in which a reproduced image is formed on the opposite side of the light incident surface may be used as the hologram element. Further, although the configuration in which the hologram element is irradiated with the parallel light beam is described as an example, the hologram element may be irradiated with a convergent light beam or the like. The condensed beam is light that includes the direction along the optical path of the reference beam used in fabricating the hologram element. Further, the optical system that is incident on the hologram is not limited to a lens, and may be various methods such as collecting light by a mirror surface.

As a means for cooling the phosphor, for example, it is also effective to mechanically move (for example, rotate) the phosphor itself, and to change the position at which the reproduced image is irradiated with time.

Fig. 2 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention.

In the fluorescent light source device, a transmissive element that generates a reproduced image on the opposite side of the light incident surface of the laser light is used instead of a reflective element that generates a reproduced image on the light incident surface side of the laser light. As a hologram element.

The laser light emitting mechanism 10 includes a plurality of (for example, nine) laser light sources 11 configured to emit respective excitation light sources for exciting the light of the phosphor 30; and a plurality of parallel light lenses 12 disposed at each The position of the front side of the light source 11 in the light emission direction is formed, and the light emitted from the laser light source 11 at a predetermined spread angle is formed into substantially parallel light.

Each of the laser light sources 11 is composed, for example, of a semiconductor laser for emitting laser light having the same oscillation wavelength, and is arranged such that the optical axes of the emitted laser light extend in parallel with each other.

Each of the parallel light lenses 12 is configured such that its optical axis corresponds to The optical axes of the laser light sources are formed in a uniform state.

The phosphor light source device of this example includes, for example, a penetrating hologram element 21 that generates a reproduced image by the laser light emitted from the laser light emitting mechanism 10.

The hologram element 21 is disposed at a position where the laser light emitted from each of the laser light sources 11 is irradiated in the irradiation direction of the reference light beam used when the hologram element 21 is manufactured.

The hologram element 21 is recorded with a reproduced image composed of light for illuminating a predetermined area on the light incident surface of the phosphor 30, for example, a rectangular area.

Each of the reproduced images generated from the respective irradiation positions of the laser light of the hologram element 21 refers to a reproduced image in which the light intensity distribution in the reproduced image region X on the phosphor 30 is uniform, and The same position on the light incident surface of the phosphor 30 is generated. That is, each of the reproduced images is formed to form a composite reproduced image in which the light intensity distribution in the reproduced image area X on the phosphor 30 is superimposed on the phosphor 30. In the second drawing, for the sake of easy understanding, only the reproduced images Ha and Hi generated by the irradiation positions La and Li of the laser light on the hologram element 21 are indicated by broken lines.

At a position where the composite reproduced image composed of the hologram element 21 is formed, a phosphor 30 is disposed which is excited by the synthesized reproduced image to emit light.

The phosphor 30 of this example is formed, for example, by an annular (annular) phosphor film formed on one surface of a disk-shaped light-transmissive substrate 31 (in FIG. 2, Convenient instructions are added with hatching). Light transmission The substrate 31 is rotationally driven around a central axis (an axis perpendicular to the translucent substrate 31) C2 of the translucent substrate 31 by a driving mechanism (not shown). Here, the number of rotations of the light-transmitting substrate 31 is, for example, 60 rpm. With the above configuration, it is possible to prevent the phosphor 30 from being in an overheated state, and it is possible to suppress damage or deterioration (deterioration) of the phosphor 30.

In the above-described phosphor light source device, the laser light emitted from each of the laser light sources 11 is formed into parallel light by the parallel light lens 12 and is incident on the hologram element 21. Thereby, the reproduced images respectively generated by the respective irradiation positions of the laser light on the hologram element 21 are overlapped at predetermined portions of the phosphors 30 formed on one surface of the rotationally-transparent light-transmitting substrate 31. To form a composite reproduced image. Further, the phosphor 30 is excited to emit light by synthesizing the reproduced image, and the light distribution characteristic of the phosphor is substantially Lambertian distribution centering on the axis perpendicular to the light incident surface of the phosphor 30. (The uniform light distribution characteristic) is emitted from the other surface side of the light-transmitting substrate 31. The light emitted from the phosphor light source device is the same as the phosphor light source device shown in Fig. 1, and can be used, for example, by forming a parallel light by a convex lens.

The same effects as described above can also be obtained by the phosphor light source device of the above configuration.

Fig. 3 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention. In the phosphor light source device as shown in FIG. 2, the phosphor light source device further includes a focus lens 15 that focuses the light emitted from the laser light emitting mechanism 10, and an optical element. Making the light emitted by each of the laser light sources 11 in the hologram element The light incident surface of the member 21 is scanned as an optical system for injecting the hologram element 21, and the other portions have the same structure as the phosphor light source device shown in Fig. 2. In the third embodiment, the same components as those of the phosphor light source device shown in Fig. 2 are denoted by the same reference numerals, and their description will be omitted.

For example, a pair of scanning mirrors 40A and 40B each composed of a separate galvanometer scanner is used to scan the light emitted from each of the laser light sources 11 on the light incident surface of the hologram element 21. Optical components. One of the scanning mirrors 40A is swingably disposed such that the spot of the laser light focused by the focus lens 15 is on the hologram element 21 at a position where the laser beam is focused by the focus lens 15. Scan in one direction on the entrance surface. The other scanning mirror 40B is swingably disposed such that the spot of the laser light formed by the other scanning mirror 40A is on the light incident surface of the hologram element 20A toward the other direction. Scan in the direction. The respective swing center axes C3 and C4 of the scanning mirrors 40A and 40B are set to extend in mutually orthogonal directions.

In the above-described phosphor light source device, the laser light emitted from the laser light emitting means 10 is focused by the focus lens 15, and sequentially incident on the pair of scanning mirrors 40A, 40B. By causing the pair of scanning mirrors 40A and 40B to be associated with each other and controlling them, the laser light emitted from each of the laser light sources is irradiated to the same position on the light incident surface of the hologram element 21, and the light of the laser light is made. The spot is scanned on the light incident surface of the hologram element 21 in such a manner as to depict a two-dimensional trajectory with time. Thereby, the reproduced image generated by the irradiation position of the laser light on the hologram element 21, A predetermined portion of the phosphor formed on one surface of the rotationally-transparent light-transmitting substrate 31 is formed. Here, the reproduced image generated by the hologram element 21 is not limited to the irradiation position of the laser light, and may be generated at the same position in the circumferential direction of the phosphor 30. Further, the phosphor 30 is excited to emit light by reproducing the image, and the light distribution characteristic of the phosphor is substantially Lambertian distribution centering on the axis perpendicular to the light incident surface of the phosphor 30 ( The uniform light distribution characteristic is emitted from the other surface side of the light-transmitting substrate 31. Even if the light emitted from the phosphor light source device is the same as the phosphor light source device shown in Fig. 1, for example, it can be used as a parallel light by a convex lens.

With the above-configured phosphor light source device, not only the same effects as described above but also the thermal load due to the concentration of the light beam toward the hologram element 21 can be alleviated.

Fig. 4 is a view showing a schematic configuration of another example of the phosphor light source device of the present invention.

The phosphor light source device is configured such that a plurality of hologram elements 20A, 20B, and 20C each corresponding to a plurality of laser light sources are provided in the phosphor light source device as shown in Fig. 1 . The part has the same structure as the phosphor light source device shown in Fig. 1. In the fourth embodiment, the same components as those of the phosphor light source device shown in Fig. 1 are denoted by the same reference numerals, and their description will be omitted.

Each of the hologram elements 20A, 20B, and 20C is disposed in the laser light emitting mechanism 10, and the laser light emitted from the laser light source 11 corresponding to each other is used along the parameters used in manufacturing the hologram elements 20A, 20B, and 20C. The position where the illumination direction of the light beam is irradiated.

The hologram elements 20A, 20B, and 20C of the above-described examples are, for example, used to generate reproduced images H1, H2, and H3 having predetermined light intensity distributions in the reproduced image area on the phosphor 30, and The reproduced images H1, H2, and H3 generated by the respective hologram elements 20A, 20B, and 20C are superimposed on the phosphor 30 to form a composite reproduced image in the reproduced image area on the phosphor 30. The light intensity distribution is uniform.

In the above-described phosphor light source device, the laser light emitted from each of the laser light sources 11 is formed as parallel light by the parallel light lens 12 to illuminate the corresponding hologram elements 20A, 20B, and 20C. Thereby, the reproduced images H1, H2, and H3 recorded in the respective hologram elements 20A, 20B, and 20C are reproduced, and each of the reproduced images H1, H2, and H3 is superposed on the phosphor 30 to form a combined weight. Display the image. Here, the intensity distribution of the laser light (composite reproduced image) incident on the phosphor is complementary to each other by the intensity distribution of each of the reproduced images H1, H2, and H3, and is formed to have, for example, a top hat shape (evenly Strength distribution). Further, the phosphor 30 is caused to emit light by synthesizing the reproduced image, and the light distribution characteristic of the phosphor is substantially Lambertian distribution centering on the axis C1 perpendicular to the light incident surface of the phosphor 30 ( It has a uniform distribution of light distribution) to be emitted. The light emitted from the phosphor light source device can be utilized, for example, by the convex lens 45 to form parallel light.

The same effects as described above can also be obtained by the phosphor light source device of the above configuration.

As described above, since the phosphor light source device of the present invention is capable of emitting light having a uniform light intensity distribution, it is provided with high light output power. Since it is an injection device, it can be used as a light source device for a projector device. Hereinafter, a projector device on which the phosphor light source device of the present invention is mounted will be described.

<Projector device>

Fig. 5 is a view showing a schematic configuration of an example of a projector device on which the phosphor light source device of the present invention is mounted.

The projector device includes a first color light source unit 50R, a second color light source unit 50G, and a third color light source unit 50B, and a color combining optical member 60 for generating the color light R generated by the first color light source unit 50R. The color light G generated by the two-color light source unit 50G and the color light B generated by the third color light source unit 50B are combined into the combined light W and emitted; the penetrating spatial modulation element 70 is incident on the color-synthesizing optical member. 60 produced synthetic light W and emitted optical imaging P; and a synthetic optical imaging projection mechanism 80 composed of a projection lens that expands and projects optical imaging P onto screen S.

The first color light source unit 50R is constituted by a phosphor light source device disclosed in any one of Figs. 1 to 3. The above-described phosphor light source device includes a first laser light source for emitting color light R (for example, red light) as an excitation light source.

The second color light source unit 50G is constituted by a phosphor light source device disclosed in any one of Figs. 1 to 3. The above-described phosphor light source device includes a second laser light source for emitting color light G (for example, green light) as an excitation light source.

The third color light source unit 50B is constituted by a phosphor light source device disclosed in any one of Figs. 1 to 3. The above-described phosphor light source device includes a third laser light source for emitting color light B (for example, blue light) as an excitation light source.

The color synthesis optical member 60 is disposed in the light path of the color light R generated by the first color light source unit 50R, the light path of the color light G generated by the second color light source unit 50G, and the third color light source unit 50B. The intersection of the light path of the colored light B. For example, a color synthesis iridium such as a color separation iridium can be used as the color synthesis optical member 60.

The spatial modulation element 70 is disposed on the optical path of the composite light W generated by the color synthesis optical member 60.

The spatial modulation element 70, as a specific example, means a digital micromirror device (DMD, registered trademark), or a liquid crystal display device.

In the projector device, the color light R generated by the first color light source unit 50R, the color light G generated by the second color light source unit 50G, and the color light B generated by the third color light source unit 50B are incident on the color synthesis optical member 60. The synthesized light W is emitted by combining the color synthesis optical member 60. The combined light W generated by the color-synthesized optical member 60 is incident on the spatial modulation element 70, and the optical imaging P is modulated by the spatial modulation element 70 via the synthetic optical imaging projection mechanism 80 to expand the optical imaging P. Project to screen S.

According to the above projector device, since the respective color light source units 50R, 50G, and 50B are configured by the above-described phosphor light source device, the phosphor light source device can emit light having a high light output with uniform light output. The light, so it can project high-brightness images.

10‧‧‧Laser light injection mechanism

11‧‧‧Laser light source

12‧‧‧Parallel light lens

20‧‧‧holographic elements (reflective type)

30‧‧‧Fertior

45‧‧‧ convex lens

C1‧‧‧ axis

H1, H2, H3‧‧‧ redisplayed images

L1, L2, L3‧‧‧ irradiation position

Claims (5)

A phosphor light source device comprising: a phosphor; and an excitation light source that emits light for exciting the phosphor and emits light emitted from the phosphor, wherein the hologram element is located at : the light emitted by the excitation light source is irradiated at a position along an irradiation direction of a reference beam used in manufacturing the hologram element, and is disposed such that a reproduced image recorded on the hologram element is generated in the fluorescent body In the upper position, the hologram element is used to generate a reproduced image in which the light intensity distribution is uniform in the reproduced image area on the phosphor. A phosphor light source device according to claim 1, comprising: a plurality of excitation light sources; and each of the laser light emitted from the respective excitation light sources is irradiated at each of the hologram elements Each of the generated reproduced images is superposed on the incident surface of the phosphor. A phosphor light source device according to claim 1 or 2, further comprising: an optical element that scans light emitted from the excitation light source on a light incident surface of the hologram element. A phosphor light source device comprising: a phosphor; and a plurality of excitation light sources for emitting light for exciting the phosphor and emitting light emitted from the phosphor, characterized by: a plurality of holograms The component is positioned at a position where the light emitted by the corresponding excitation light source is irradiated along the irradiation direction of the reference beam used in manufacturing the hologram element, and is disposed to cause the reproduced image recorded on the hologram element Generating a position on the aforementioned phosphor, The respective reproduced images generated by the plurality of hologram elements are superimposed to generate a composite reproduced image in which the light intensity distribution is uniform in the reproduced image region on the phosphor. A phosphor light source device according to claim 1 or 4, wherein the hologram element uses an element recorded with a reproduced image generated by light for illuminating a rectangular region on the phosphor. .