JP5938867B2 - Phosphor device, lighting apparatus and projector apparatus - Google Patents

Description

  The present invention relates to a phosphor device that emits emitted light emitted by irradiating a phosphor with excitation light, an illumination device that outputs illumination light of each color using the phosphor device, and an output from the illumination device. The present invention relates to a projector device that projects as a color image using illumination light.

Some light source devices use a light emitter that emits light having a wavelength different from the wavelength of the excitation light by irradiating the excitation light output from the light source. This light source device is used as various light sources such as a lighting device and an image display device.
In such a light source device, a light emitting diode (LED) or a laser diode (LD) is generally used as a light source, for example, as a semiconductor light source. For example, a transparent phosphor or epoxy resin or the like is used as a resinous binder, and a plurality of phosphors are dispersed in the resinous binder to form a light emitting layer.

  This resinous binder is deteriorated by excitation light from a semiconductor light source, or damaged when the intensity of excitation light is particularly strong. In addition, since the resin such as silicone or epoxy resin in which the phosphor is scattered has low thermal conductivity, the temperature of the phosphor increases, and the emission wavelength emitted from the phosphor shifts or emits light due to this temperature increase. Phenomena such as temperature quenching where the strength decreases occur. For this reason, the brightness | luminance as a light source device will fall.

  For example, Patent Document 1 discloses the use of a light-transmitting inorganic material such as glass as a member that replaces such a resinous binder such as transparent silicone or epoxy resin, and Patent Documents 2 and 3 disclose heat conduction. The use of high ceramics is disclosed.

JP 2003-258308 A JP 2006-282447 A JP 2010-024278 A

  However, the phosphor light-emitting layer formed using the above-mentioned light-transmitting ceramic binder (translucent ceramic binder) is used to replace the phosphor light-emitting layer formed using the previous resinous binder. Often done. For this reason, the translucent ceramic binder does not have a structure suitable as a light source device that emits emitted light from a light emitter.

  An object of the present invention is to provide a phosphor device, an illuminating device, and a projector device that have a structure suitable for emitting emitted light from a light emitter, and that can efficiently emit light emitted from the light emitter. is there.

Phosphor device according to the main aspect of the present invention, a sintered body in which a fluorescent body and an inorganic material is formed by sintering is formed in frustum shape, and face each other so as to intersect the slope of the frustum shape respectively forming a first and second bottom having different areas, the reflective layer is formed on the lower first bottom surface of the area of the first and the second bottom surface and the slope of the sintered body before Stories second bottom surface, an antireflection film is formed directly, arranging a plurality of phosphor device to exit of the emitted luminescent light from the phosphor as well as the second bottom surface and the entrance of the excitation light In addition, the plurality of phosphor devices are integrally formed on the substrate.

Lighting apparatus according to the main aspect of the present invention includes the phosphor device, an excitation light source for outputting pumping light, an irradiation optical system for irradiating the excitation light outputted from the pumping light source to the phosphor device, A emitted light extraction optical system that extracts the emitted light emitted from the phosphor device as illumination light.

The projector apparatus according to the principal aspect of the present invention includes a projection optical system for projecting a color image using said illuminating device, the light of each color including the illumination light output from the lighting device.

  According to the present invention, it is possible to provide a phosphor device, an illumination device, and a projector device that have a structure suitable for emitting emitted light from a light emitter and can emit light emitted from the light emitter efficiently.

The block diagram which shows the phosphor device which concerns on the 1st Embodiment of this invention. The block diagram which shows the illuminating device using the fluorescent substance device which concerns on the 2nd Embodiment of this invention. The block diagram which shows the illuminating device using two fluorescent substance devices which concern on the 3rd Embodiment of this invention. The block diagram which shows the prior art of the phosphor device which concerns on this invention. The figure which shows the partial overlap with the wavelength of the long wavelength side of the excitation spectrum and the wavelength of the short wavelength side of the emission spectrum of a light-emitting body in the prior art. The schematic diagram for demonstrating the phenomenon of self-absorption of light emission in the prior art. The block diagram which shows the illuminating device using the several fluorescent substance device which concerns on the 4th Embodiment of this invention. The block diagram which shows the some phosphor device in the same apparatus. The block diagram which shows the projector apparatus using the illuminating device which concerns on the 5th Embodiment of this invention.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
1A and 1B are structural views of a phosphor device, FIG. 1A is an external view, and FIG. 1B is a cross-sectional structural view. The phosphor device 1 is formed by sintering a light-transmitting inorganic material (hereinafter referred to as an inorganic binder) 2 such as Al203 and a plurality of phosphors 3 such as YAG: Ce. The plurality of phosphors 3 are scattered in the inorganic binder 2 at, for example, uniform intervals. These phosphors 3 emit green (wavelength values within a wavelength of 492 to 577 nm) emission light, for example, when irradiated with excitation light E of blue (wavelength values within a wavelength of 455 to 492 nm).

The phosphor device 1 is formed in a truncated cone shape such as a quadrangular frustum shape by sintering the inorganic binder 2 and each phosphor 3. Incidentally, the phosphor device 1 is not limited to the quadrangular pyramid shape as a frustum, and may be hexagonal cone shape or circular truncated cone shape.
Specifically, the phosphor device 1 includes four side surfaces 4-1 to 4-4 for forming a quadrangular frustum shape, and first and second surfaces 4-5 that are two bottom surfaces facing each other in parallel. 4-6.
Four sides 4-1 to 4-4, to form a slope for forming a quadrangular frustum shape. The inclination angle θ of the side surfaces 4-1 to 4-4, for example, the angle θ formed by the side surface 4-1 and the first surface 4-5 is, for example, 45 ° as shown in FIG. Yes. Each inclination angle θ formed by the other side surfaces 4-2 to 4-4 and the first surface 4-5 is also set to 45 °, for example.

The first surface 4-5 and the second surface 4-6 are provided so as to intersect with the side surfaces 4-1 to 4-4, which are frustum-shaped inclined surfaces, respectively. Of these, the first surface 4-5 has an area S1.
The second surface 4-6 has an area S2. The area S1 of the first surface 4-5 is smaller than the area S2 of the second surface 4-6.

  The reflective layer 5 is formed on the entire surface of the first surface 4-5 and the side surfaces 4-1 to 4-4. The reflection layer 5 is formed of a metal reflection film such as silver or aluminum, or a multilayer optical reflection film formed by laminating metal oxide or fluoride. The reflective layer 5 reflects, for example, light in a visible wavelength range of 455 nm to 577 nm, that is, light in a blue wavelength range (455 nm to 492 nm) and light in a green wavelength range (492 nm to 577 nm). Thus, the first surface 4-5 and the side surfaces 4-1 to 4-4 reflect the fluorescent light having the wavelength in the visible light region by the formation of the reflective layer 5, that is, the emitted light emitted by the respective phosphors 3. It becomes a reflective surface. Hereinafter, the first surface 4-5 is referred to as a plane reflecting surface 4-5, and the side surfaces 4-1 to 4-4 are referred to as inclined reflecting surfaces 4-1 to 4-4.

The second surface 4-6 receives excitation light E from the outside of the phosphor device 1 and emits the emitted light emitted from each phosphor 3 to the outside of the phosphor device 1. The second surface 4-6 is hereinafter referred to as an incident / exit surface 4-6. A thin antireflection film 6 is formed on the incidence / emission surface 4-6. The antireflection film 6, for example, to prevent reflection of light in the visible area of the wavelength 400 nm to 700 nm. The antireflection film 6 is made of, for example, a metal oxide or fluoride. Typical examples of these metal oxides and fluorides include TiO2, MgF2, SiO2, and Al2O3. The antireflection film 6 may be formed, for example, in an antireflection structure having a fine concavo-convex shape with a pitch having a wavelength smaller than the wavelength of visible light. This antireflection film 6 is formed, for example, by transferring from a mold during sintering when manufacturing the phosphor device 1 or by etching.

  In the case of such a phosphor device 1, for example, when excitation light E of blue (wavelength value within a wavelength of 455 to 492 nm) enters the phosphor device 1 from the incident / exit surface 4-6, the excitation light E is The phosphors 3 scattered in the inorganic binder 2 are irradiated. Each of these phosphors 3 is excited by irradiation with excitation light E and emits light with an arbitrary wavelength distribution. For example, each phosphor 3 emits, for example, green light (wavelength value within a wavelength of 492 to 577 nm). Since these phosphors 3 emit light with equal amounts of light in all directions, each light emitted from each phosphor 3 is emitted in all directions in the inorganic binder 2.

Among these, each light emitted from each phosphor 3 toward the incident / exit surface 4-6 is transmitted through the incident / exit surface 4-6 and emitted toward the outside of the phosphor device 1.
Each emitted light emitted from each phosphor 3 toward the plane reflecting surface 4-5 is reflected by the reflecting layer 5 formed on the plane reflecting surface 4-5 and heads toward the incident / exiting surface 4-6. Then, the light is transmitted through the incident / exiting surface 4-6 and is emitted toward the outside of the phosphor device 1.
The emitted light emitted from the phosphors 3 toward the slope reflecting surfaces 4-1 to 4-4 is reflected by the reflecting layers 5 formed on the slope reflecting surfaces 4-1 to 4-4, respectively. To the entrance / exit plane 4-6.
Further, each emitted light emitted from each phosphor 3 is reflected by the reflecting layer 5 formed on the plane reflecting surface 4-5 and subsequently formed on the inclined reflecting surfaces 4-1 to 4-4. There is also emitted light that is reflected by the reflecting layer 5 that is directed toward the incident / exiting surface 4-6, is transmitted through the incident / exiting surface 4-6, and is emitted toward the outside of the phosphor device 1.
Since these slope reflecting surfaces 4-1 to 4-4 are formed on, for example, 45 ° slopes on the respective sides of the quadrangular pyramids, the emitted light reflected by these slope reflecting surfaces 4-1 to 4-4 is The light is efficiently guided to the incident / exiting surface 4-6, transmitted through the incident / exiting surface 4-6, and emitted toward the outside of the phosphor device 1.

As described above, according to the first embodiment, the inorganic binder 2 in which the plurality of phosphors 3 are scattered is formed in a quadrangular frustum shape, and the four inclined reflecting surfaces 4-1 to 4 are formed in this quadrangular frustum shape. -4, a plane reflecting surface 4-5 parallel to each other, and an entrance / exit surface 4-6 are provided, and the reflecting layer 5 is formed on the inclined surface reflecting surfaces 4-1 to 4-4 and the plane reflecting surface 4-5. Therefore, the emitted light emitted from each phosphor 3 in all directions is emitted from the direct incident / exit surface 4-6 toward the outside of the phosphor device 1 or reflected from the flat reflecting surface 4-5 or each inclined surface. Each of the phosphors is emitted toward the outside of the phosphor device 1 after being reflected by the reflecting layer 5 formed on the surfaces 4-1 to 4-4, and then passing through the incident / emission surface 4-6. The emitted light emitted from 3 can be efficiently emitted to the outside of the phosphor device 1.
Phosphor device 1 is not limited to the quadrangular pyramid shape as a frustum shape, even hexagonal frustum-shaped or circular frustum shape can achieve the same effect as in the first embodiment.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 2 shows a configuration diagram of an illumination apparatus 10 using the phosphor device 1. In addition, the same code | symbol is attached | subjected to FIG. 1 (a) and the same part as (b), and the detailed description is abbreviate | omitted.
A semiconductor laser 11 is provided as an excitation light source. The semiconductor laser 11 outputs, as excitation light E, excitation laser light (hereinafter referred to as excitation laser light E) having a wavelength value within a blue wavelength region (455 to 492 nm), for example.

A collimator lens 12, a dichroic mirror 13 as an emitted light extraction optical system, and a condensing optical system 14 as an irradiation optical system are provided on the optical path of the excitation laser light E output from the semiconductor laser 11. Yes.
The collimator lens 12 collimates the excitation laser light E output from the semiconductor laser 11.
The condensing optical system 14 condenses and irradiates the excitation laser light E output from the semiconductor laser 11 toward the phosphor device 12.

  The dichroic mirror 13 transmits the excitation laser light E collimated by the collimator lens 12, emits light from the phosphor device 1, is emitted to the outside of the phosphor device 1, and enters through the condensing optical system 14. The emitted light H is reflected and extracted as illumination light. That is, the dichroic mirror 13 transmits the excitation laser light E having a wavelength value in the blue wavelength region (455 to 492 nm) and has a wavelength value in the green wavelength region (492 to 577 nm) emitted from the phosphor device 1. The emitted light is reflected.

  With such an illumination device, when the excitation laser light E having a blue wavelength value is output from the semiconductor laser 11, the excitation laser light E is collimated by the collimator lens 12 and enters the dichroic mirror 13. This excitation laser light E is transmitted through the dichroic mirror 13 and irradiated onto the phosphor device 1 collected by the condensing optical system 14.

In this phosphor device 1, similarly to the above, when the excitation light E enters the phosphor device 1 from the incident / exit surface 4-6, the plurality of phosphors 3 scattered in the inorganic binder 2 are each, for example, Emits emitted light having a green wavelength value. These emitted lights are emitted from the direct incident / exit surface 4-6 toward the outside of the phosphor device 1, or are formed on the flat reflecting surface 4-5 and the inclined reflecting surfaces 4-1 to 4-4. The light is reflected by the reflective layer 5 and then passed through the incident / exit surfaces 4-6.
The emitted light of the green wavelength value emitted from the phosphor device 1 is incident on the dichroic mirror 13 through the condensing optical system 14, reflected by the dichroic mirror 13, and extracted as illumination light.

  As described above, according to the second embodiment, the phosphor device 1 is provided, and the excitation laser light E having the blue wavelength value output from the semiconductor laser 11 is converted into the collimator lens 12, the dichroic mirror 13, and the condensing optical system. The phosphor device 1 is irradiated through 14 and the emitted light H having the green wavelength value emitted from the phosphor device 1 is extracted by the dichroic mirror 13 through the condensing optical system 14, so that it can be efficiently extracted from the phosphor device 1. For example, emitted light having a green wavelength value can be output from each phosphor 3 as illumination light.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to the drawings.
FIG. 3 shows a configuration diagram of an illumination apparatus 20 using the phosphor device 1. The same parts as those in FIGS. 1A and 1B and FIG.
On the substrate 21, two phosphor devices 1, 1 are integrally arranged and fixed. The phosphor devices 1 and 1 are formed integrally with the incident / exit surfaces 4-6, which are the second surfaces, arranged on the same plane. The phosphor devices 1 and 1 are disposed within the irradiation range of the excitation laser beam E.

  With such an illumination device, when the excitation laser light E having a blue wavelength value is output from the semiconductor laser 11, the excitation laser light E is collimated by the collimator lens 12 and enters the dichroic mirror 13. The excitation laser light E is transmitted through the dichroic mirror 13 and irradiated onto the two phosphor devices 1 and 1 collected by the condensing optical system 14.

In these phosphor devices 1, 1, as described above, when the excitation laser light E enters the phosphor devices 1, 1 from the incident / exit surface 4-6, the inorganic binders of the phosphor devices 1, 1 are used. Each of the plurality of phosphors 3 scattered in 2 emits, for example, emitted light having a green wavelength value. These emitted lights are emitted directly from the direct incident / exit surface 4-6 toward the outside of the phosphor devices 1 and 1, and are emitted from the respective plane reflecting surfaces 4-5 and the inclined reflecting surfaces 4-1 to 4-4. After being reflected, the light exits with high efficiency through the incident / exit surfaces 4-6.
Each emitted light having a green wavelength value emitted from each phosphor device 1, 1 enters the dichroic mirror 13 through the condensing optical system 14, is reflected by the dichroic mirror 13, and is taken out as illumination light.

  As described above, according to the third embodiment, since the two phosphor devices 1 and 1 are integrally disposed and disposed within the irradiation range of the excitation laser light E, the two phosphor devices 1 and 1 are disposed. The emitted light from each phosphor 3 efficiently extracted from 1 can be output as illumination light, and the emitted light from each phosphor 3 efficiently extracted from the two phosphor devices 1, 1 is output as illumination light By doing so, it is possible to extract illumination light having a greater amount of illumination light than the illumination light extracted from one phosphor device 1.

By the way, in the illumination device, the semiconductor laser 11 as the excitation light source is provided outside the inorganic binder 30 including the phosphor 3 as shown in FIG. 4A, for example, or as shown in FIG. 4B. There are those provided inside 30. In FIG. 2A, the inorganic binder 30 is provided on the substrate 31 via the reflective film 32. In FIG. 2B, the inorganic binder 30 is provided in a hole 34 having an inclined surface formed on the substrate 33. A reflective film 35 is formed on the inclined surface formed on the substrate 33.
As shown in FIG. 5, the phosphor 3 generally used in such an illuminating device has a part of the wavelength on the long wavelength side of the excitation spectrum S1 and the wavelength on the short wavelength side of the emission spectrum S2 of the light emitting body 3. Are overlapping. That is, the light emitter 3 emits the emitted light 3a, but this emitted light 3a propagates through the inorganic binder 30 and is irradiated to the other light emitter 3 as shown in FIG. There is a possibility that a phenomenon of self-absorption of light emission in which the light emission intensity of the phosphor 3 is lowered by exciting another activation atom, that is, exciting another activated atom, may occur.

  On the other hand, in the third embodiment, emitted light of, for example, a green wavelength value emitted from the plurality of phosphors 3 scattered in the inorganic binders 2 of the two phosphor devices 1 and 1. Are directly emitted from the respective incident / exit surfaces 4-6 toward the outside of the respective phosphor devices 1 and 1 and are respectively reflected by the respective plane reflecting surfaces 4-5 and the respective slant reflecting surfaces 4-1 to 4-4. Since it is efficiently emitted through the incident / exit surfaces 4-6 after being reflected, there is a possibility that a phenomenon of self-absorption of light emission in which the emission intensity of the phosphor 3 is lowered by exciting another activation atom is generated. There is no. Note that the phenomenon of self-absorption of light emission does not occur in the first and second embodiments.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to the drawings.
In the third embodiment, the two phosphor devices 1 are arranged on the substrate 21. However, the present invention is not limited to this, and two or more phosphor devices 1, 1,... As shown in FIG. 7, the four phosphor devices 1 may be fixed in a grid (matrix). As shown in FIG. 8, these phosphor devices 1, 1,..., 1 are formed integrally with the respective incident / exit surfaces 4-6, which are the second surfaces, arranged on the same plane. These phosphor devices 1, 1,..., 1 are arranged within the irradiation range of the excitation laser beam E.
The plurality of phosphor devices 1, 1,..., 1 are not limited to four, and four or more may be arranged in a lattice shape (matrix shape). In addition, the plurality of phosphor devices 1, 1,..., 1 are not limited to being arranged in a grid (matrix), but may be arranged in the vertical and horizontal directions at regular intervals or concentrically. Alternatively, they may be arranged at random positions.

  With such an illumination device, when the excitation laser light E having a blue wavelength value is output from the semiconductor laser 11, the excitation laser light E is collimated by the collimator lens 12 and enters the dichroic mirror 13. The excitation laser light E passes through the dichroic mirror 13 and is condensed by the condensing optical system 14. A plurality of phosphor devices 1, 1,..., For example, four phosphor devices 1, 1,. Is irradiated.

In these phosphor devices 1, 1,..., As described above, when the excitation laser light E enters the phosphor devices 1 from the incident / exit surfaces 4-6, the phosphor devices 1, 1,. Each of the plurality of phosphors 3 scattered in each inorganic binder 2 emits emitted light having a green wavelength value, for example. These emitted lights are respectively emitted from the direct incident / exit surface 4-6 toward the outside of the phosphor device 1 or formed on the respective flat reflecting surfaces 4-5 and the inclined reflecting surfaces 4-1 to 4-4. The light is reflected by the reflecting film 5 and then emitted through the incident / exit surfaces 4-6.
Each emitted light having a green wavelength value emitted from each phosphor device 1, 1,... 1 enters the dichroic mirror 13 through the condensing optical system 14, is reflected by the dichroic mirror 13, and is illuminated. Take out as.

  As described above, according to the fourth embodiment, a plurality of, for example, four phosphor devices 1, 1,..., 1 are integrally disposed and disposed within the irradiation range of the excitation laser light E. The emitted light from each phosphor 3 that is efficiently extracted from the plurality of phosphor devices 1, 1,..., 1 can be output as illumination light, and is efficiently extracted from the four phosphor devices 1, 1,. By outputting the emitted light from each of the phosphors 3 as illumination light, it is possible to extract illumination light with a greater amount of illumination light than the illumination light extracted from one phosphor device 1.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to the drawings.
FIG. 9 shows a configuration diagram of a projector device 40 using the illumination device 10 shown in FIG. The projector device 40 employs, for example, a DLP (Digital Light Processing: registered trademark) method using a semiconductor light emitting element. The projector device 40 is equipped with a CPU 41. An operation unit 42, a main memory 43, and a program memory 44 are connected to the CPU 41. In addition, an input unit 46, an image conversion unit 47, a projection processing unit 48, and an audio processing unit 49 are connected to the CPU 41 via a system bus 45. Among these, to the projection processing unit 48, the light source unit 50 and the micromirror element 51 are connected. A mirror 52 is disposed on the optical path of the illumination light output from the light source unit 50, and the micromirror element 51 is disposed on the reflected light path of the mirror 52. A projection lens unit 53 is disposed on the reflected light path of the micromirror element 51. A speaker unit 54 is connected to the audio processing unit 49.

The input unit 46 receives analog image signals of various standards, and sends the analog image signals to the image conversion unit 47 through the system bus 45 as digitized image data.
The image conversion unit 47 is also referred to as a scaler, and unifies the image data input from the input unit 46 into image data of a predetermined format suitable for projection and sends the image data to the projection processing unit 48. At this time, the image conversion unit 47 also superimposes data such as symbols indicating various operation states for OSD (On Screen Display) on the image data as necessary, and supplies the processed image data to the projection processing unit 48. send.

The projection processing unit 48 multiplies the frame rate according to a predetermined format, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations according to the image data sent from the image conversion unit 47. The micromirror element 51 that is a spatial light modulation element is driven by the high-speed time-division driving.
The sound processing unit 49 includes a sound source circuit such as a PCM (Pulse-Cod Modulation) sound source, converts the sound data given during the projection operation into an analog signal, and drives the speaker unit 54 to emit a loud sound, or a beep sound, if necessary Is generated.

The micromirror element 51 is, for example, WXGA (Wide eXtended Graphic Array), and includes a plurality of micromirrors arranged in an array, for example, a plurality of micromirrors arranged in horizontal x vertical (1250 x 800 pixels). An optical image is formed by the reflected light by displaying an image by turning on and off the tilt angles of these micromirrors at high speed.
The light source unit 50 sequentially and sequentially emits illumination lights of a plurality of colors including primary color lights of red (R), green (G), and blue (B) in a time division manner. The RGB lights sequentially emitted from the light source unit 50 are totally reflected by the mirror 52 and applied to the micromirror element 51. A light image is formed by the reflected light from the micromirror element 51, and the formed light image is projected and displayed as a color image on a screen to be projected through a projection lens unit 53 as a projection optical system.

The light source unit 50 is formed using, for example, the illumination device 10 shown in FIG. The light source unit 50 includes, for example, a semiconductor laser that outputs laser light having a wavelength value in the red (R) wavelength region (622 to 777 nm) and a wavelength value in the blue (B) wavelength region (455 to 492 nm). The semiconductor laser 11 that outputs laser light and the illumination device 10 shown in FIG. 2 that uses the laser light output from the semiconductor laser 11 as excitation light and outputs emitted light having a green (G) wavelength value as illumination light. These red (R), green (G), and blue (B) illumination lights are sequentially emitted in a time-sharing manner.
The light source unit 50 is not limited to the illumination device 10 shown in FIG. 2 but may be an illumination device 20 using the illumination device 20 shown in FIG. 3 or a plurality of phosphor devices 1 shown in FIG. .

The CPU 41 receives an operation instruction from the operation unit 42, reads / writes data from / to the main memory 43, and executes a program stored in the program memory 44. Further, the CPU 41 controls the input unit 46, the image conversion unit 47, the projection processing unit 48, and the sound processing unit 49 via the system bus 45. That is, the CPU 41 executes a control operation in the projector device 40 using the main memory 43 and the program memory 44.
The main memory 43 is composed of, for example, an SRAM and functions as a work memory for the CPU 41. The program memory 44 is configured by an electrically rewritable nonvolatile memory, and stores an operation program executed by the CPU 41, various fixed data, and the like.

  The CPU 41 executes various projection operations in accordance with key operation signals from the operation unit 42. The operation unit 42 includes a key operation unit provided in the main body of the projector device 40 and an infrared light receiving unit that receives infrared light from a dedicated remote controller of the projector device 40. A key operation signal based on a key operated by a remote controller or a remote controller is sent directly to the CPU 41.

With such a configuration, when analog image signals of various standards are input to the input unit 46, the input unit 46 sends the analog image signal to the image conversion unit 47 through the system bus 45 as digitized image data.
The image conversion unit 47 unifies the image data input from the input unit 46 into image data of a predetermined format suitable for projection, and data such as symbols indicating various operating states for OSD as necessary. The image data is superimposed and processed, and the processed image data is sent to the projection processing unit 48.

The projection processing unit 48 sets a frame rate according to a predetermined format according to the image data sent from the image conversion unit 47, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations. The micromirror element 51, which is a spatial light modulator, is driven by the multiplied high-speed time division drive.
The micromirror element 51 displays an image by driving the projection processing unit 48 to turn on and off the tilt angles of the plurality of micromirrors at high speed, thereby forming an optical image with the reflected light.

On the other hand, the light source unit 50 includes, for example, green (G) illumination light output from the illumination device 10 illustrated in FIG. 2 and blue (B) wavelength laser light output from the semiconductor laser 11, Laser light of red (R) wavelength value output from the semiconductor laser is sequentially emitted as illumination light in a time-sharing manner. The RGB illumination light sequentially emitted from the light source unit 50 is totally reflected by the mirror 52 and applied to the micromirror element 51. A light image is formed by the reflected light from the micromirror element 51, and the formed light image is projected and displayed as a color image on a screen to be projected through a projection lens unit 53 as a projection optical system.
At the same time, the audio processing unit 49 converts the audio data given during the projection operation into an analog signal, and drives the speaker unit 54 to emit a loud sound or generate a beep sound or the like as necessary.

  As described above, according to the fifth embodiment, the illumination device 10 shown in FIG. 2, the illumination device 20 shown in FIG. 3, and the plurality of phosphor devices 1 shown in FIG. Since the projector device 40 is configured using the illumination device, it is possible to project and display a color image on the screen using the emitted light from each phosphor 3 efficiently taken out from the phosphor device 1 as illumination light.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

Hereinafter, the characteristic points at the beginning of the application of the present invention will be described.
The invention corresponding to claim 1 is formed in the shape of a cone containing at least a phosphor, and forms first and second surfaces having different areas across the cone-shaped slope and facing each other. And forming a reflection layer on the first surface having the smaller area and the slope of the first and second surfaces, and forming an antireflection layer on the second surface having the larger area. The phosphor device is characterized in that the second surface serves as an entrance for excitation light and an exit for emitted light emitted from the phosphor.
According to a second aspect of the present invention, in the phosphor device according to the first aspect, the pyramid shape includes a quadrangular pyramid shape, a hexagonal pyramid shape, a quadrangular pyramid shape, or a conical shape.

  The invention corresponding to claim 3 is the phosphor device corresponding to claim 1 or 2, characterized in that the inorganic material containing the phosphor is sintered and formed into the cone shape.

  The invention corresponding to claim 4 is the phosphor device according to any one of claims 1 to 3, wherein the reflective layer emits the emitted light emitted from the phosphor having a wavelength in a visible light region. The antireflection layer transmits the emitted light.

  The invention corresponding to claim 5 is the phosphor device according to any one of claims 1 to 4, wherein the antireflection layer is formed of an antireflection film or is longer than the wavelength length of the visible light region. It is formed in the uneven | corrugated shape which has a pitch of a small length.

The invention corresponding to claim 6 is characterized in that a plurality of the phosphor devices according to any one of claims 1 to 5 are arranged.
The invention corresponding to claim 7 is the phosphor device corresponding to claim 6, wherein the plurality of phosphor devices are arranged in a grid pattern.

  The invention corresponding to claim 8 is the phosphor device corresponding to claim 6 or 7, wherein the plurality of phosphor devices are integrally formed with the second surfaces arranged on the same plane. It is characterized by being.

  The invention corresponding to claim 9 is the phosphor device corresponding to claim 6, 7 or 8, characterized in that the plurality of phosphor devices are arranged within an irradiation range of the excitation light.

The invention corresponding to claim 10 is the phosphor device according to any one of claims 1 to 9, an excitation light source that outputs excitation light, and the excitation light output from the excitation light source is the fluorescence. An illumination apparatus comprising: an irradiation optical system that irradiates a body device; and a emitted light extraction optical system that extracts the emitted light emitted from the phosphor device as illumination light.
The invention corresponding to claim 11 is the illuminating device corresponding to claim 10, wherein the emitted light extraction optical system transmits the excitation light and reflects the emitted light emitted from the phosphor device. It has a mirror.

  The invention corresponding to claim 12 is an illumination device corresponding to any one of claims 10 and 11, and projection optics for projecting light of each color including the illumination light output from the illumination device as a color image. And a projector device.

  1: phosphor device, 2: translucent inorganic material (inorganic binder), 3: phosphor, 4-1 to 4-4: side surface, 4-5: first surface (planar reflecting surface), 4-6 : Second surface (incident / exit surface), 5: reflective layer, 6: antireflection film, 11: semiconductor laser, 12: collimator lens, 13: dichroic mirror, 14: condensing optical system, 20: illumination device, 21: Substrate, 40: Projector device, 41: CPU, 42: Operation unit, 43: Main memory, 44: Program memory, 45: System bus, 46: Input unit, 47: Image conversion unit, 48: Projection processing unit, 49: Audio processing unit, 50: Light source unit, 51: Micro mirror element, 52: Mirror, 53: Projection lens unit, 54: Speaker unit

Claims (11)

Sintered bodies and fluorescent bodies and an inorganic material is formed by sintering is formed in frustum shape, and the first and second bottom having different respective areas opposing each other to cross the inclined surface of the frustum-shaped formed, a reflective layer is formed smaller first bottom surface of the area of the first and the second bottom surface and the inclined surface, prior Symbol second bottom surface of the sintered body, the anti-reflection film directly Forming a plurality of phosphor devices having the second bottom surface as an entrance of excitation light and an exit of emitted light emitted from the phosphor, and the plurality of phosphor devices are disposed on a substrate A phosphor device characterized in that it is formed integrally with the phosphor device. 2. The phosphor device according to claim 1, wherein the antireflection film is made of metal oxide or fluoride.   The phosphor device according to claim 1, wherein the frustum shape includes a quadrangular frustum shape, a hexagonal frustum shape, or a frustum shape. The reflective layer reflects the emitted light emitted from the phosphor having a wavelength in the visible light region,
The phosphor device according to claim 1, wherein the antireflection film transmits the emitted light. Fluorescence according to any one of claims 1 to 4 wherein the anti-reflection film is characterized by being formed in an uneven shape having a length less pitch than the length of the wavelength of the visible light region Body device.   The phosphor device according to claim 1, wherein the plurality of phosphor devices are arranged in a grid pattern.   The phosphor according to any one of claims 1 to 6, wherein the plurality of phosphor devices are integrally formed with the second bottom surfaces arranged on the same plane. device.   The phosphor device according to any one of claims 1 to 7, wherein the plurality of phosphor devices are arranged within an irradiation range of the excitation light. The phosphor device according to any one of claims 1 to 8,
An excitation light source that outputs excitation light;
An irradiation optical system for irradiating the phosphor device with the excitation light output from the excitation light source;
An emitted light extraction optical system for extracting the emitted light emitted from the phosphor device as illumination light;
An illumination device comprising:   The illumination apparatus according to claim 9, wherein the emission light extraction optical system includes a dichroic mirror that transmits the excitation light and reflects the emission light emitted from the phosphor device. The lighting device according to any one of claims 9 and 10,
A projection optical system for projecting a color image using light of each color including the illumination light output from the illumination device;
A projector apparatus comprising:

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