JP5915317B2 - Light source device, projector device, and light source driving method - Google Patents

Description

  The present invention relates to a light source device using laser light, a projector device that projects output light of the light source device, and a light source driving method for driving the light source device.

  In the projector device, a semiconductor light source such as a light emitting diode (LED) or a laser diode (LD) is used instead of a mercury lamp as a light source device. As this light source device, there is an ultra-wide color gamut that uses three primary colors of RGB as laser light. This light source device is used as various light sources such as a lighting device and an image display device.

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

  Of these, the G laser diode has not been realized with a high power. For example, in order to realize a projector device with a luminance of 3000 lm or more, it is necessary to use a considerable number of laser diodes. For example, in order to achieve a luminance of 3000 lm using a G laser diode having a continuous (CW) output of 0.5 W, a center wavelength of 532 nm, and a luminance of 610 lm, assuming that the efficiency of the optical system is 40%, the output is 12. 3 W is required. For this purpose, assuming that the duty of the G color is 50%, 50 G laser diodes are required.

On the other hand, the light source device is provided with a phosphor that emits G color by irradiating light of a wavelength different from the wavelength of the excitation light, for example, B laser light, by irradiating excitation light such as laser light. Some increase the luminance of G color.
However, if priority is given to luminance, a phosphor that emits a wide half-value width must be used, and the G color gamut cannot be expanded, and a wide color gamut standard such as AdobeRGB cannot be satisfied.

  An object of the present invention is to provide a light source device, a projector device, and a light source driving method capable of widening the G color gamut and obtaining high luminance.

  A light source device according to a main aspect of the present invention includes a blue light source that emits light in a blue wavelength region, a red light source that emits light in a red wavelength region, a green light source that emits light in a green wavelength region, and the blue light source. A phosphor that receives light from a light source as excitation light and emits light in a wavelength region including the green wavelength region, light from the blue light source, light from the red light source, light from the green light source, and And an optical system that guides light from the phosphor onto the same optical path, and light emitted from the green light source is irradiated onto the phosphor and diffused in the phosphor.

  A light source device according to a main aspect of the present invention includes a first blue light source and a second blue light source that emit light in a blue wavelength region, a red light source that emits light in a red wavelength region, and light in a green wavelength region. A green light source that emits light, a phosphor that receives light of the first blue light source as excitation light, and emits light in a wavelength region including the green wavelength region, light from the second blue light source, An optical system that guides the light from the red light source, the light from the green light source, and the light from the phosphor on the same optical path, and the light emitted from the green light source is irradiated to the phosphor, Diffused in the phosphor.

A projector device according to a main aspect of the present invention includes a light source device, a display element, a light source side optical system that guides light from the light source device to the display element, and a projection that projects an image emitted from the display element. An optical system and a control means for controlling the light source device and the display element are provided, and the light source device is the light source device according to any one of claims 1 to 8.
A light source driving method according to a main aspect of the present invention includes a first laser light source that emits excitation light, a phosphor that receives the excitation light and emits light in a wavelength region including a green wavelength region, and a green wavelength region. And a second laser light source that emits the light of the same, and in a light source driving method of a light source device that sequentially emits light in different wavelength regions in a time-division manner, receiving excitation light from the first laser light source When the phosphor emits light in a wavelength region including the green wavelength region, the second laser light source is simultaneously driven to diffuse the light in the green wavelength region by the phosphor , and the green wavelength The light in the wavelength region including the region and the diffused light in the green wavelength region are combined and output.

  According to the present invention, it is possible to provide a light source device, a projector device, and a light source driving method capable of widening the G color gamut and obtaining high luminance.

1 is a structural diagram showing a light source device according to a first embodiment of the present invention. The block diagram which shows the 3rd beam splitter in the same apparatus. The figure which shows the ratio of the light quantity of the fluorescence with respect to the light emission angle in the fluorescent substance wheel in the apparatus. The block diagram which shows the fluorescent substance wheel in the same apparatus. The figure which shows each control content of the high-intensity mode, the highest-intensity mode, and LD pure color mode in the same apparatus. FIG. 6 is a structural diagram showing a light source device according to a second embodiment of the present invention. The block diagram which shows the fluorescent substance wheel in the same apparatus. The figure which shows the control content of the highest luminance mode in the same apparatus. FIG. 6 is a structural diagram showing a light source device according to a third embodiment of the present invention. The block diagram which shows the fluorescent substance wheel in the same apparatus. The figure which shows each control content of the high-intensity mode in the same apparatus, the highest-intensity mode, and a pure color mode. FIG. 6 is a structural diagram showing a light source device according to a fourth embodiment of the present invention. The figure which shows each control content of the high-intensity mode in the same apparatus, the highest-intensity mode, and a pure color mode. FIG. 10 is a structural diagram showing a projector device using any one of light source devices according to a fifth embodiment of the invention.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration diagram of a light source device. This apparatus includes an R color laser diode R-LD that outputs an R color laser beam, a G color laser diode G-LD that outputs a G color laser beam, and a B color laser diode B- that outputs a B color laser beam. LD. For example, each wavelength region is 620 to 660 nm for R color, 500 nm to 590 nm for G color, and 440 nm to 460 nm for B color.

The R, G, and B laser beams respectively output from the R, G, and B laser diodes R-LD, G-LD, and B-LD are converted into G colors by the following optical system P. It is output as illumination light S with increased brightness. Hereinafter, the configuration of the optical system P will be described.
A first beam splitter BS1 is disposed on each output optical path of the G color laser diode G-LD and the B color laser diode B-LD. The first beam splitter BS1 reflects the G laser beam output from the G laser diode G-LD and transmits the B laser beam output from the B laser diode B-LD. The color laser beam and the B color laser beam are output on the same optical path.

A second beam splitter BS2 is disposed on each output optical path of the first beam splitter BS1 and the R color laser diode R-LD. The second beam splitter BS2 reflects the R color laser light output from the R color laser diode R-LD, and transmits the G and B laser beams transmitted through the beam splitter BS1 on the same optical path. Output.
A third beam splitter GRM1, optical lenses 1 and 2, and a phosphor wheel 3a as a rotating body are disposed on the optical path that passes through the first and second beam splitters BS1 and BS2. The phosphor wheel 3 a is disposed on the optical path between the optical lenses 1 and 2.

  The third beam splitter GRM1 has a configuration to be described later, and transmits each of the G, R, and B laser beams incident on one surface side (R color laser diode R-LD side) and the other side. G color incident from the surface side (phosphor wheel 3a side) is reflected. A plurality of colors such as the G color, the R color, and the B color are omitted and described, for example, as a GRB color.

FIG. 2 shows a configuration diagram of the third beam splitter GRM1. The third beam splitter GRM1 is provided with a transmission region H in the central portion that transmits each of the RGB laser beams (transmits light in the visible light region). In the third beam splitter GRM1, for example, a reflection film that reflects G color is formed on the other surface side (phosphor wheel 3a side), and no reflection film is formed in the transmission region H. Yes. The transmission region H may form a mechanical hole. With such a configuration, the G color light is transmitted on one surface side (R color laser diode R-LD side), and the G color light is reflected on the other surface side (phosphor wheel 3a side).
On the reflected light path of the third beam splitter GRM1, the fourth beam splitter GRM2 is arranged via the optical lens 4. The fourth beam splitter GRM2 reflects the wavelength light in the G wavelength region and transmits the wavelength light outside the G wavelength region. That is, the G color laser light is reflected and the RB color lights are transmitted.

  A mirror 5 is disposed on the light transmission side of the phosphor wheel 3 a on the optical path of each optical lens 1, 2, and an optical lens 6 and a mirror 7 are disposed on the reflection optical path of the mirror 5. . The fourth beam splitter GRM 2, the optical lens 9, and the light tunnel (LT) 10 are arranged on the reflection optical path of the mirror 7 via the optical lens 8. The light tunnel 10 may use a kaleidoscope. This light tunnel 10 makes the light intensity in the light section of incident light uniform. The output light of the light tunnel 10 becomes the illumination light S output from the light source device. The illumination light S output from the light source device is sent to, for example, a micromirror element (DMD) of the projector device. This micromirror element is, for example, a WXGA (Wide eXtended Graphic Array), which is a display element in which a plurality of micromirrors are arranged in an array, for example, a plurality of micromirrors arranged in horizontal × vertical (1250 × 800 pixels). In addition, each of the tilt angles of the micromirrors is turned on and off at high speed to display an image, thereby forming an optical image with the reflected light.

  The phosphor wheel 3a generates G-color fluorescence when irradiated with B-color laser light. For example, when B-color laser light is incident on the surface of the phosphor wheel 3a in a direction perpendicular to the surface of the phosphor wheel 3a, the phosphor wheel 3a emits fluorescence in the direction of the emission angle θ (unit °) relative to the vertical direction. To emit. FIG. 3 shows the ratio of the amount of fluorescent light with respect to the emission angle θ. If the emission angle θ is in the range of less than 10 °, for example, the light loss is small. That is, only a small amount of emitted light is incident on the transmission region H of the third beam splitter GRM1, and most of the emitted light does not enter the transmission region H of the third beam splitter GRM1 through the optical lens 1, and the transmission region. The light is reflected by the reflective film formed on the outer peripheral side of H and transmitted to the optical lens 4.

  FIGS. 4A and 4B illustrate the configuration of the phosphor wheel 3a. FIG. 4A shows the configuration of the phosphor wheel 3a, and FIG. 4B shows the function of the phosphor wheel 3a. The phosphor wheel 3a is formed in a disc shape, and a fluorescent region (hereinafter referred to as a fluorescent plate) 3-1 and a diffusion region (hereinafter referred to as a diffuser plate) 3-2 are formed on the outer peripheral edge. Yes. The central portion of the phosphor wheel 3a is connected to the rotating shaft of the drive motor 11, and the phosphor wheel 3a is driven in the direction of arrow A by the drive of the drive motor 11 controlled by the control unit 12 described later. Rotate.

The fluorescent plate 3-1 is configured by applying a highly reflective film using a metal as a substrate, and includes a phosphor on the surface of the highly reflective film. For example, when a B-color laser beam is irradiated, the fluorescent plate 3-1 emits a G color by the fluorescent action of the phosphor.
The diffusion plate 3-2 is formed by sandblasting or etching using glass as a substrate, and has a diffusion surface for diffusing incident light, and an AR film that transmits light in the visible light region. The diffusion plate 3-2 does not contain a phosphor. For example, when the R and G laser beams are irradiated, the diffusion plate 3-2 diffuses and transmits the RG laser beams.

  The controller 12 drives each of the RGB laser diodes R-LD, G-LD, and B-LD corresponding to each segment. Further, the control unit 12 drives the drive motor 11 to rotate the phosphor wheel 3a so that each laser beam is irradiated to an appropriate position of the phosphor wheel 3a corresponding to each segment.

Next, the operation of this apparatus configured as described above will be described for each mode shown in FIGS. 5 (a), 5 (b), and 5 (c).
This apparatus has a high luminance mode, a maximum luminance mode, and an LD pure color mode. In the high luminance mode, the luminance of the G illumination light is increased. The highest luminance mode further increases the luminance of the illumination light than the high luminance mode. In the LD pure color mode, illumination light is output by the RGB laser beams output from the RGB laser diodes R-LD, G-LD, and B-LD.

(A) High brightness mode
The controller 12 drives the drive motor 11 to rotate the phosphor wheel 3a in the direction of arrow A as shown in FIG. The controller 12 outputs the illumination light S in the order of RGB colors, for example, in the high luminance mode.
First, when outputting the R illumination light S (R segment), the control unit 12 drives the R laser diode R-LD according to the control content shown in FIG. The laser diodes G-LD and B-LD are stopped.

  The R-color laser beam output from the R-color laser diode R-LD is reflected by the second beam splitter BS2, passes through the transmission region H of the third beam splitter GRM1, passes through the optical lens 1, and is fluorescent. The diffusion plate 3-2 of the body wheel 3a is irradiated. The R color laser light is diffused by the diffusing plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, passes through the optical lens 6, is reflected by the mirror 7, and further passes through the optical lens 8 to be the fourth beam. The light enters the splitter GRM2. Then, the R color laser light passes through the fourth beam splitter GRM2, passes through the optical lens 9, is made uniform in light intensity in the light section by the light tunnel 10, and is output as R color illumination light S.

Next, when the G color illumination light S is output (G segment), the control unit 12 simultaneously drives the laser diodes G-LD and B-LD of the GB color as shown in FIG. 5A. The driving of the other R color laser diodes R-LD is stopped.
The G-color laser light output from the G-color laser diode G-LD is reflected by the first beam splitter BS1, passes through the second beam splitter BS2, and passes through the transmission region H of the third beam splitter GRM1. The fluorescent plate 3-1 of the phosphor wheel 3a is irradiated through the optical lens 1.
The G-color laser light becomes diffused light by diffusion in the phosphor, is reflected by the highly reflective film of the fluorescent plate 3-1, is further reflected by the third beam splitter GRM1, passes through the optical lens 4, and passes through the fourth beam splitter. Incident on GRM2.

At the same time, the B-color laser beam output from the B-color laser diode B-LD is transmitted through the first and second beam splitters BS1 and BS2, and is transmitted through the transmission region H of the third beam splitter GRM1. The light passes through the optical lens 1 and is irradiated on the fluorescent plate 3-2 of the phosphor wheel 3a. The fluorescent plate 3-2 emits G-color fluorescence when irradiated with B-color laser light. This G-color fluorescence is reflected by the third beam splitter GRM1 and enters the fourth beam splitter GRM2 through the optical lens 4 in the same way as the propagation optical path of the G-color laser beam.
Accordingly, the G color laser light and the G color fluorescence are combined and enter the fourth beam splitter GRM2, reflected by the fourth beam splitter GRM2, passed through the optical lens 9, and passed through the light tunnel 10. As a result, the light intensity in the light section is made uniform and output as G-color illumination light S.

Next, when outputting the B color illumination light S (B segment), the control unit 12 drives the B color laser diode B-LD as shown in FIG. The drive of each laser diode R-LD, G-LD is stopped.
The B-color laser light output from the B-color laser diode B-LD is transmitted through the first and second beam splitters BS1 and BS2, is transmitted through the transmission region H of the third beam splitter GRM1, and passes through the optical lens 1. The light is then applied to the diffusion plate 3-2 of the phosphor wheel 3a.

The B color laser light is diffused by the diffusing plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, passes through the optical lens 6, is reflected by the mirror 7, and further passes through the optical lens 8 and passes through the fourth beam. The light enters the splitter GRM2. The B-color laser light passes through the fourth beam splitter GRM2, passes through the optical lens 9, is made uniform in light intensity in the light section by the light tunnel 10, and is output as B-color illumination light S.
Thereafter, the illumination light S is output from the apparatus while repeating in the order of RGB colors.
As described above, in the high luminance mode, when the G illumination light S is output, each of the GB laser diodes G-LD and B-LD is simultaneously driven to synthesize the G laser light and the G fluorescence. Since it is output as the G color illumination light S, the luminance of the G color laser light can be supplemented to output the high brightness G color illumination light S, and the G color gamut can be expanded.

(B) Maximum brightness mode
In the maximum luminance mode, the description of the same operation as that in the high luminance mode is omitted, and a different operation will be described.
In the highest luminance mode, the operation when outputting the RGB illumination light S is the same as the operation in the high luminance mode, and in addition to the operation in the high luminance mode, the magenta (M) color illumination light S is output. .
When outputting the M illumination light S (M segment), the control unit 12 drives the RB laser diodes R-LD and B-LD simultaneously according to the control content shown in FIG. 5B. Then, the driving of the other G laser diode G-LD is stopped.

  The R-color laser beam output from the R-color laser diode R-LD is reflected by the second beam splitter BS2, passes through the transmission region H of the third beam splitter GRM1, passes through the optical lens 1, and then becomes a phosphor. Irradiated to the diffusion plate 3-2 of the wheel 3a. The R color laser light is diffused by the diffusing plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, passes through the optical lens 6, is reflected by the mirror 7, and further passes through the optical lens 8 to be the fourth beam. The light enters the splitter GRM2.

  At the same time, the B-color laser light output from the B-color laser diode B-LD is transmitted through the first and second beam splitters BS1 and BS2, and is transmitted through the transmission region H of the third beam splitter GRM1. It irradiates the diffusion plate 3-2 of the phosphor wheel 3a through the lens 1. The B-color laser light is diffused by the diffusion plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, and passes through the optical lens 6 and is reflected by the mirror 7, similarly to the propagation optical path of the R-color laser light. Further, the light passes through the optical lens 8 and enters the fourth beam splitter GRM2.

Therefore, each RB color laser beam is combined into an M color laser beam, and this M color laser beam is incident on the fourth beam splitter GRM2, and is transmitted through the fourth beam splitter GRM2. After passing through the optical lens 9, the light tunnel 10 makes the light intensity in the light section uniform and outputs it as M-color illumination light S.
Thereafter, the illumination light S is output from the apparatus while repeating in the order of RGB colors.

  Thus, in the highest luminance mode, when the G color illumination light S is output, each of the GB laser diodes G-LD and B-LD is simultaneously driven to synthesize the G color laser light and the G color fluorescence. G color illumination light S is output, and in addition to this, the RB laser diodes R-LD and B-LD are simultaneously driven, and the RB color laser lights are synthesized and output as M color illumination light S. Therefore, the luminance of the G color laser light can be supplemented to output the high luminance G illumination light S, the G color gamut can be expanded, and the high luminance M illumination light S can be output. Higher-intensity illumination light S can be output.

(C) LD pure color mode
In the LD pure color mode, the description of the same operation as that in the high luminance mode is omitted, and a different operation will be described.
In the LD pure color mode, when the RB illumination light S is output (R segment, B segment), the operation is the same as that in the high luminance mode, and the G illumination light S is output (G segment). Only the G laser diode G-LD is driven. That is, in the LD pure color mode, when the RGB illumination light S is output, the RGB laser diodes R-LD, G-LD, and B-LD are individually driven.

When the G color illumination light S is output (G segment), the control unit 12 drives only the G color laser diode G-LD in accordance with the control content shown in FIG. The driving of the diodes R-LD and B-LD is stopped.
The G-color laser light output from the G-color laser diode G-LD is reflected by the first beam splitter BS1, passes through the second beam splitter BS2, and passes through the transmission region H of the third beam splitter GRM1. The fluorescent plate 3-1 of the phosphor wheel 3a is irradiated through the optical lens 1.
The G-color laser light becomes diffused light by diffusion in the phosphor, is reflected by the highly reflective film of the fluorescent plate 3-1, is further reflected by the third beam splitter GRM1, passes through the optical lens 4, and passes through the fourth beam splitter. Incident on GRM2. The G-color laser light is reflected by the fourth beam splitter GRM2, passes through the optical lens 9, is made uniform in light intensity in the light section by the light tunnel 10, and is output as G-color illumination light S.
As described above, in the LD pure color mode, when the RGB illumination light S is output, the laser diodes R-LD, G-LD, and B-LD are individually driven, and the RGB output from each laser light. Since the light in the wavelength band of each color becomes the illumination light S as it is, the illumination light S with a wider color gamut can be output.

  As described above, according to the first embodiment, when the G illumination light S is output in the high luminance mode, the laser diodes G-LD and B-LD of the GB color are simultaneously driven to obtain the G color. Since the G color illumination light S, which is a combination of the laser light and the G color fluorescence, is output, the brightness of the G color laser light can be supplemented to output the high brightness G color illumination light S. The color gamut can be expanded. In this case, the G color laser light output from the G color laser diode G-LD is diffused by diffusion in the phosphor in the fluorescent plate 3-1, so that speckle can be suppressed.

In the highest luminance mode, in addition to the high luminance mode, the RB laser diodes R-LD and B-LD are simultaneously driven, and the RB laser beams are combined and output as M illumination light S. Therefore, the luminance of the G color laser light can be supplemented to output the high luminance G illumination light S, the G color gamut can be expanded, and the high luminance M illumination light S can be output. Higher-intensity illumination light S can be output.
Also, in the LD pure color mode, each laser diode R-LD, G-LD, and B-LD is individually driven, and light in the wavelength band of each RGB color output from each laser beam is output as illumination light S as it is. Therefore, the illumination light S with a wider color gamut can be output.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 6 shows a configuration diagram of the light source device. The phosphor wheel 3b generates G-color fluorescence when irradiated with B-color laser light. Similarly to the phosphor wheel 3a, the phosphor wheel 3b is, for example, in the range of the emission angle θ with respect to the vertical direction when B-color laser light is incident on the surface of the phosphor wheel 3a in the vertical direction. Fluoresce in the direction of.

  FIGS. 7A and 7B illustrate the configuration of the phosphor wheel 3b. FIG. 7A shows the configuration of the phosphor wheel 3b, and FIG. 7B shows the function of the phosphor wheel 3b. The phosphor wheel 3b is formed in a disc shape using glass as a substrate, and a fluorescent plate 3-3 and a diffusion plate 3-2 are formed on the outer peripheral edge. In the fluorescent plate 3-3, a film (GRM) that reflects wavelength light in the G wavelength region and transmits light in wavelengths other than the G wavelength region is applied, and phosphor is contained on the surface thereof. For example, when the B color laser beam is irradiated, the fluorescent plate 3-3 emits G color by the fluorescent action of the phosphor.

  In the diffusion plate 3-2, a diffusion surface that diffuses incident light by sandblasting or etching and an AR film that transmits light in the visible light region are provided on one surface of a glass substrate. The diffusion plate 3-2 does not contain a phosphor. For example, when each RG laser beam is irradiated, the diffusion plate 3-2 diffuses and transmits each RG laser beam.

When the phosphor plate 3-3 is irradiated with B-color laser light, the phosphor wheel 3b generates G-color fluorescence from the phosphor plate 3-3 and reflects the G-color light. 2 transmits and diffuses each RB laser beam.
The controller 12 drives each of the RGB laser diodes R-LD, G-LD, and B-LD corresponding to each segment. The control unit 12 drives the drive motor 11 to rotate the phosphor wheel 3b so that each laser beam is irradiated to an appropriate position of the phosphor wheel 3b corresponding to each segment.

Next, the operation of the apparatus configured as described above will be described.
Similar to the first embodiment, this apparatus has a high luminance mode, a maximum luminance mode, and an LD pure color mode.
(A) High brightness mode
In the high luminance mode, similarly to the first embodiment, the control unit 12 performs the R color when outputting the R illumination light S (R segment) according to the control content shown in FIG. When the laser diode R-LD is driven and the G color illumination light S is output (G segment), each of the GB laser diodes G-LD and B-LD is simultaneously driven and another R color laser diode R is driven. When the driving of the LD is stopped and the B-color illumination light S is output (B segment), the B-color laser diode B-LD is driven.
When the G color illumination light S is output (G segment), the G color laser light and the G color fluorescence are combined, enter the fourth beam splitter GRM2, and are reflected by the fourth beam splitter GRM2. Then, the light passes through the optical lens 9, the light tunnel 10 makes the light intensity in the light section uniform, and the light is output as G-color illumination light S.

(B) Maximum brightness mode
In the maximum luminance mode, the description of the same operation as that in the high luminance mode is omitted, and a different operation will be described.
In the highest luminance mode, the operation when outputting the RGB illumination light S is the same as the operation in the high luminance mode, and in accordance with the control content shown in FIG. The illumination light S with color is output.

  The controller 12 drives the R laser diode R-LD when outputting the R illumination light S (R segment), and outputs each of the RGB colors when outputting the Y illumination light S (Y segment). When the laser diodes R-LD, G-LD, and B-LD are simultaneously driven and the G illumination light S is output (G segment), the laser diodes G-LD and B-LD of the GB color are simultaneously driven. When the M-color illumination light S is output (M segment), the RB laser diodes R-LD and B-LD are simultaneously driven, and when the B-color illumination light S is output (B segment), B The color laser diode B-LD is driven.

  When outputting the Y-color illumination light S (Y segment), the R-color laser light output from the R-color laser diode R-LD is reflected by the second beam splitter BS2 and transmitted through the third beam splitter GRM1. The light passes through the region H, passes through the optical lens 1, and is irradiated onto the fluorescent plate 3-3 of the phosphor wheel 3b. The R-color laser light is diffused and transmitted by the fluorescent plate 3-3, passes through the optical lens 2, is reflected by the mirror 5, passes through the optical lens 6, is reflected by the mirror 7, and further passes through the optical lens 8 and passes through the fourth lens. It enters the beam splitter GRM2.

  At the same time, the G-color laser light output from the G-color laser diode G-LD is reflected by the first beam splitter BS1, passes through the second beam splitter BS2, and passes through the transmission region H of the third beam splitter GRM1. Is transmitted through the optical lens 1 and irradiated onto the fluorescent plate 3-3 of the phosphor wheel 3b. The G-color laser light is diffusely reflected by the fluorescent plate 3-3, further reflected by the third beam splitter GRM1, passes through the optical lens 4, and enters the fourth beam splitter GRM2.

  Further, the B-color laser light output from the B-color laser diode B-LD is transmitted through the first and second beam splitters BS1 and BS2, and is transmitted through the transmission region H of the third beam splitter GRM1 to form an optical lens. 1 is irradiated onto the fluorescent plate 3-3 of the phosphor wheel 3b. The fluorescent plate 3-3 emits G-color fluorescence when irradiated with B-color laser light. This G-color fluorescence is reflected by the third beam splitter GRM1 and enters the fourth beam splitter GRM2 through the optical lens 4 in the same way as the propagation optical path of the G-color laser beam.

  In the fourth beam splitter GRM2, R-color laser light, G-color laser light, and G-color fluorescence are incident, and these are combined to become Y-color illumination light S. The Y-color illumination light S passes through the optical lens 9, the light intensity in the light section is made uniform by the light tunnel 10, and is output as the Y-color illumination light S.

  When outputting the illumination light S of M color (M segment), the controller 12 simultaneously drives each of the RB laser diodes R-LD and B-LD as shown in FIG. The driving of the G laser diode G-LD is stopped.

  The R-color laser beam output from the R-color laser diode R-LD is reflected by the second beam splitter BS2, passes through the transmission region H of the third beam splitter GRM1, passes through the optical lens 1, and then becomes a phosphor. Irradiated to the diffusion plate 3-2 of the wheel 3b. The R color laser light is diffused by the diffusing plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, passes through the optical lens 6, is reflected by the mirror 7, and further passes through the optical lens 8 to be the fourth beam. The light enters the splitter GRM2.

At the same time, the B-color laser light output from the B-color laser diode B-LD is transmitted through the first and second beam splitters BS1 and BS2, and is transmitted through the transmission region H of the third beam splitter GRM1. It irradiates the diffusion plate 3-2 of the phosphor wheel 3b through the lens 1. The B-color laser light is diffused by the diffusion plate 3-2, passes through the optical lens 2, is reflected by the mirror 5, and passes through the optical lens 6 and is reflected by the mirror 7, similarly to the propagation optical path of the R-color laser light. Further, the light passes through the optical lens 8 and enters the fourth beam splitter GRM2.
Therefore, each RB color laser beam is combined into an M color laser beam, and this M color laser beam is incident on the fourth beam splitter GRM2, and is transmitted through the fourth beam splitter GRM2. After passing through the optical lens 9, the light tunnel 10 makes the light intensity in the light section uniform and outputs it as M-color illumination light S.

(C) LD pure color mode
In the LD pure color mode, the description of the same operation as that in the high luminance mode is omitted, and a different operation will be described.
In this LD pure color mode, the operation when the RB illumination light S is output (R segment, B segment) is the same as the operation in the high luminance mode, and according to the control content shown in FIG. When the illumination light S is output (G segment), only the G laser diode G-LD is driven. That is, in the LD pure color mode, when the RGB illumination light S is output, the RGB laser diodes R-LD, G-LD, and B-LD are individually driven.

  As described above, according to the second embodiment, the RGB laser diodes R-LD, G-LD, and B-LD are simultaneously driven when the Y illumination light S is output in the maximum luminance mode. When the G illumination light S is output, the GB laser diodes G-LD and B-LD are simultaneously driven, and when the M illumination light S is output, the RB laser diodes R- Since the LD and B-LD are driven at the same time, the luminance of the G laser beam can be supplemented to output the G illumination light S with high luminance, the G color gamut can be expanded, Luminance Y-color and M-color illumination light S can be output, and higher-luminance illumination light S can be output. In the LD pure color mode, when outputting the illumination light S of each RGB color, each laser diode R-LD, G-LD, B-LD is individually driven, and each RGB color outputted from each laser light is output. Since the light in the wavelength band becomes the illumination light S as it is, the illumination light S with a wider color gamut can be output.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 9 shows a configuration diagram of the light source device. This apparatus includes a G color laser diode G-LD, a B color laser diode B-LD, an R color light emitting diode R-LED that emits R color, and a B color light emitting diode B-LED that emits B color. Is provided.
The G color and B color laser lights respectively output from the respective GB laser diodes G-LD and B-LD, and the GB colors output from the RB color light emitting diodes R-LED and B-LED, respectively. Are emitted as illumination light S having a G color brightness increased by the following optical system P. Hereinafter, the configuration of the optical system P will be described.

A first beam splitter BS1 is disposed at the intersection of the output optical paths of the laser diodes G-LD and B-LD of the GB color. A third beam splitter GRM1, an optical lens 1, and a phosphor wheel 3c are disposed on the transmission optical path of the first beam splitter BS1. In addition, a fifth beam splitter BTM is disposed on the reflected light path of the third beam splitter GRM1 via the optical lens 4.
The R color light emitting diode R-LED is provided so that the optical path of the output light of the R color to be output matches the optical path in which the third beam splitter GRM1, the optical lens 4, and the fifth beam splitter BTM are arranged. It is done. Note that an optical lens 13 is disposed in the optical path of the R-colored emitted light of the R-color light-emitting diode R-LED.

  The B-color light-emitting diode B-LED is provided so that the optical path of the output light of B-color and the optical path where the fifth beam splitter BTM and the optical lens 9 are arranged coincide with each other.

Similarly to the above, the third beam splitter GRM1 transmits the RGB laser beams incident on one surface side and reflects the G-color fluorescence incident on the other surface side.
The fifth beam splitter BTM transmits wavelength light in the B wavelength region and reflects wavelength light other than the B wavelength band. Reflects the G-color fluorescence and R-color laser light incident on one surface side, and transmits the B-color emission light incident from the other surface side.

The phosphor wheel 3c emits G-color fluorescence, for example, when irradiated with B-color laser light. FIGS. 10A and 10B illustrate the configuration of the phosphor wheel 3c. FIG. 10A shows the configuration of the phosphor wheel 3c, and FIG. 10B shows the function of the phosphor wheel 3c. The phosphor wheel 3c is formed in a disc shape, and a phosphor plate 3-4 is formed on the outer peripheral edge. The fluorescent plate 3-4 is formed by applying a highly reflective film using a metal as a substrate, and contains a phosphor. For example, when the B color laser light is irradiated, the fluorescent plate 3-4 emits G color by the fluorescent action of the phosphor.
The controller 12 drives each of the RGB laser diodes R-LD, G-LD, and B-LD corresponding to each segment. Further, the control unit 12 drives the drive motor 11 to rotate the phosphor wheel 3c so that each laser beam is irradiated to an appropriate position of the phosphor wheel 3c corresponding to each segment.

Next, the operation of the apparatus configured as described above will be described.
Similar to the first embodiment, the apparatus has a high luminance mode, a maximum luminance mode, and a pure color mode.
(A) High brightness mode
In the high luminance mode, the control unit 12 drives only the R light emitting diode R-LED and outputs the G color when outputting the R illumination light S (R segment) according to the control content shown in FIG. When the illuminating light S is output (G segment), the respective GB laser diodes G-LD and B-LD are simultaneously driven, and when the B illuminating light S is output (B segment), the B color light emitting diode Only the B-LED is driven.
First, when the R illumination light S is output (R segment), the R emission light output from the R light emitting diode R-LED passes through the third beam splitter GRM1 and the optical lens 4. The light enters the fifth beam splitter BTM, is reflected by the fifth beam splitter BTM, passes through the optical lens 9, the light intensity in the light section is made uniform by the light tunnel 10, and is output as the R illumination light S Is done.

  Next, when the G color illumination light S is output (G segment), each of the laser diodes G-LD and B-LD of GB color is driven simultaneously, so that the G color output from the G color laser diode G-LD is output. The laser beam is reflected by the first beam splitter BS1, passes through the third beam splitter GRM1, passes through the optical lens 1, and is irradiated onto the fluorescent plate 3-4 of the phosphor wheel 3c. This G-color laser light is diffused and reflected by the highly reflective film of the fluorescent plate 3-4, and further reflected by the third beam splitter GRM1, passes through the optical lens 4, and enters the fifth beam splitter BTM.

  At the same time, the B color laser light output from the B color laser diode B-LD passes through the first beam splitter BS1, passes through the third beam splitter GRM1, passes through the optical lens 1, and passes through the phosphor wheel. 3c fluorescent plate 3-4 is irradiated. The fluorescent plate 3-4 emits G-color fluorescence when irradiated with B-color laser light. The G-color fluorescence is reflected by the third beam splitter GRM1 and enters the fifth beam splitter BTM through the optical lens 4 in the same manner as the propagation path of the G-color laser beam.

Therefore, the G color laser light and the G color fluorescence are combined and incident on the fifth beam splitter BTM, reflected by the fifth beam splitter BTM, passed through the optical lens 9, and passed through the light tunnel 10. As a result, the light intensity in the light section is made uniform and output as G-color illumination light S.
Next, when the B-color illumination light S is output (B segment), the B-color emission light output from the B-color light-emitting diode B-LED is transmitted through the fifth beam splitter BTM and passed through the optical lens 9. As described above, the light tunnel 10 makes the light intensity in the light section uniform, and the light is output as B-color illumination light S.

(B) Maximum brightness mode
In the highest luminance mode, the control unit 12 follows the control contents shown in FIG. 11B, and outputs the laser diodes G-LD, B-LD and R light emitting diodes of the GB color when outputting the Y illumination light S. When the R-LED is driven at the same time and the M-color illumination light S is output, the RB light-emitting diodes R-LED and B-LED are simultaneously driven.
In addition, when outputting each illumination light S of RGB color, it is the same operation | movement as the said high-intensity mode, The description is abbreviate | omitted.

  First, when the Y illumination light S is output (Y segment), each of the GB laser diodes G-LD and B-LD and the R light emitting diode R-LED is driven simultaneously. Similarly to the above, the G-color laser beam output from the LD is irradiated to the fluorescent plate 3-4 of the phosphor wheel 3c via the first beam splitter BS1, the third beam splitter GRM1, and the optical lens 1. Then, it is diffusely reflected by the high reflection film of this fluorescent plate 3-4, and further passes through the third beam splitter GRM1 and the optical lens 4 and enters the fifth beam splitter BTM.

At the same time, the B-color laser light output from the B-color laser diode B-LD passes through the first beam splitter BS1, the third beam splitter GRM1, and the optical lens 1, and the phosphor plate 3-of the phosphor wheel 3c. 4 emits G-color fluorescence from the fluorescent plate 3-4. The G-color fluorescence is reflected by the third beam splitter GRM1 and enters the fifth beam splitter BTM through the optical lens 4 in the same manner as the propagation path of the G-color laser beam.
Further, the R light emitted from the R light emitting diode R-LED passes through the optical lens 13, the third beam splitter GRM1, and the optical lens 4 and enters the fifth beam splitter BTM.

  Therefore, the G color laser light, the G color fluorescence, and the R color emission light enter the fifth beam splitter BTM and are combined, and pass through the optical lens 9 from the fifth beam splitter BTM and pass through the light tunnel 10. As a result, the light intensity in the light section is made uniform and output as Y-color illumination light S.

Next, when the M color illumination light S is output (M segment), the RB color light emitting diodes R-LED and B-LED are driven simultaneously, so the R color output from the R color light emitting diode R-LED. The emitted light of B passes through the optical lens 13, the third beam splitter GRM1, and the optical lens 4, enters the fifth beam splitter BTM, and is emitted from the B light emitting diode B-LED. Passes through the optical lens 14 and enters the fifth beam splitter BTM.
Accordingly, each RB color emitted light is incident on the fifth beam splitter BTM to be combined, passes through the optical lens 9 from the fifth beam splitter BTM, and the light tunnel 10 equalizes the light intensity in the light section. And output as M-color illumination light S.

(C) Pure color mode
In the pure color mode, the control unit 12 drives only the R-color light emitting diode R-LED when outputting the R-color illumination light S (R segment) according to the control content shown in FIG. When the illumination light S is output (G segment), only the G color laser diode G-LD is driven, and when the B color illumination light S is output (B segment), only the B color light emitting diode B-LED is driven. . Of these, when driving only the R light emitting diode R-LED when outputting the R illumination light S, and driving only the B light emitting diode B-LED when outputting the B illumination light S Since these operations have already been described, the description thereof is omitted.
When the G color illumination light S is output, only the G color laser diode G-LD is driven, so that the G color laser light output from the G color laser diode G-LD is reflected by the first beam splitter BS1. Then, the light passes through the third beam splitter GRM1, passes through the optical lens 1, is irradiated onto the fluorescent plate 3-4 of the phosphor wheel 3c, is reflected by the highly reflective film of the fluorescent plate 3-4, and further receives the third beam. The light is also reflected by the splitter GRM1, passes through the optical lens 4, and enters the fifth beam splitter BTM. The G-color laser light is reflected by the fifth beam splitter BTM, passes through the optical lens 9, is made uniform in light intensity in the light section by the light tunnel 10, and is output as G-color illumination light S.

  As described above, according to the third embodiment, when the G illumination light S is output in the high luminance mode, the laser diodes G-LD and B-LD of the GB color are simultaneously driven to obtain the G color. Since the G color illumination light S, which is a combination of the laser light and the G color fluorescence, is output, the brightness of the G color laser light can be supplemented to output the high brightness G color illumination light S. The color gamut can be expanded. In this case, since the G color laser light output from the G color laser diode G-LD is diffused by the fluorescent plate 3-4, speckle can be suppressed. Further, in the highest luminance mode, in addition to the high luminance mode, YM color illumination light S is output, so that the luminance of the G color laser light can be supplemented and the high luminance G illumination light S can be output. Luminance YM illumination light S can be output, and illumination light S with higher luminance can be output. In the pure color mode, when the RGB illumination light S is output, the R-LED, G-LD, and B-LED are individually driven so that the light in the RGB wavelength bands is directly used as the illumination light S. Therefore, the illumination light S with a wider color gamut can be output.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 12 shows a configuration diagram of the light source device. A mirror 5 is disposed on the light transmission side of the phosphor wheel 3 a on the optical path of each optical lens 1, 2, and an optical lens 6 and a mirror 7 are disposed on the reflected light path of the mirror 5. A fifth beam splitter BTM is disposed on the reflection optical path of the mirror 7 via the optical lens 8.
Since the phosphor wheel 3a is the same as the phosphor wheel 3a shown in FIGS. 4 (a) and 4 (b), description thereof is omitted.

  The controller 12 drives each of the RGB laser diodes R-LD, G-LD, and B-LD corresponding to each segment. Further, the control unit 12 drives the drive motor 11 to rotate the phosphor wheel 3a so that each laser beam is irradiated to an appropriate position of the phosphor wheel 3a corresponding to each segment.

Next, the operation of the apparatus configured as described above will be described.
Similar to the first embodiment, the apparatus has a high luminance mode, a maximum luminance mode, and a pure color mode.

(A) High brightness mode
In the high luminance mode, the control unit 12 emits the R color when outputting the R illumination light S (R segment) according to the control content shown in FIG. 13A, as in the third embodiment. Only the diode R-LED is driven, and when the G-color illumination light S is output (G segment), the laser diodes G-LD and B-LD of the GB color are simultaneously driven.

  When outputting the B color illumination light S (B segment), the control unit 12 drives only the B color laser diode B-LD. The B-color laser light output from the B-color laser diode B-LD is transmitted through the first beam splitter BS1, transmitted through the third beam splitter GRM1, passes through the optical lens 1, and is transmitted through the phosphor wheel 3a. The diffusion plate 3-2 is irradiated. The B-color laser light is diffused by the diffusion plate 3-2, passes through the optical lens 2, passes through the mirror 5, the optical lens 6, the mirror 7, the optical lens 8, the fifth beam splitter BTM, and the optical lens 9, and passes through the light. The light intensity in the light section is made uniform by the tunnel 10 and is output as the B-color illumination light S.

(B) Maximum brightness mode
In the highest luminance mode, the control unit 12 follows the control content shown in FIG. 13B when the Y illumination light S is output (Y segment), as in the third embodiment. When the laser diodes G-LD and B-LD and the R light emitting diode R-LED are simultaneously driven to output the M illumination light S (M segment), the B laser diode B-LD and the R light emission are emitted. The diode R-LED is driven simultaneously.
In addition, when outputting each illumination light S of RGB color, it is the same operation | movement as the said high-intensity mode, The description is abbreviate | omitted.

  When the M color illumination light S is output (M segment), the B color laser diode B-LD and the R color light emitting diode R-LED are driven simultaneously, so the B color output from the B color laser diode B-LD. The laser light passes through the first beam splitter BS1, the third beam splitter GRM1, and the optical lens 1, is diffused by being irradiated onto the diffusion plate 3-2 of the phosphor wheel 3a, passes through the optical lens 2, and passes through the mirror. 5, the light enters the optical lens 6, the mirror 7, the optical lens 8, and the fifth beam splitter BTM.

At the same time, the R light emitted from the R light emitting diode R-LED passes through the optical lens 13, the third beam splitter GRM1, and the optical lens 4 and enters the fifth beam splitter BTM.
Therefore, the B color laser light and the R color emitted light are incident on the fifth beam splitter BTM and are combined. The fifth beam splitter BTM passes through the optical lens 9 and is crossed by the light tunnel 10 in the light cross section. The light intensity is made uniform and output as M-color illumination light S.

(C) Pure color mode
In the pure color mode, the control unit 12 drives only the R light emitting diode R-LED when outputting the R illumination light S (R segment) according to the control content shown in FIG. When the illumination light S is output (G segment), only the G color laser diode G-LD is driven, and when the B color illumination light S is output (B segment), only the B color laser diode B-LD is driven. . Since these operations have already been described, description thereof will be omitted.
As described above, according to the fourth embodiment, it is needless to say that the same effects as those of the third embodiment can be obtained.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to the drawings.
FIG. 14 shows a configuration diagram of a projector device 40 using any one of the light source devices shown in FIG. 1, FIG. 6, FIG. 9, or 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 30 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, the light source device 50 and the micromirror element 51 are connected to the projection processing unit 48. A mirror 52 is disposed on the optical path of the illumination light output from the light source device 50, and a micro mirror element 51, which is a display element, is disposed on the reflected light path of the mirror 52. A projection lens unit 53 that is a projection optical system 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 device 50 sequentially emits illumination light S of a plurality of colors including primary color lights of red (R), green (G), and blue (B) in a time division manner in a cyclic manner. Each light sequentially emitted from the light source device 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.

The light source device 50 is formed by using any one of the light source devices shown in FIG. 1, FIG. 6, FIG. 9, or 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 30 and an infrared light receiving unit that receives infrared light from a dedicated remote controller of the projector device 30. 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 device 50 sequentially emits, for example, laser light or fluorescence having a GBR wavelength value as illumination light S in a cyclic manner in a time-sharing manner. The illumination light S of a plurality of colors including RGB primary color light sequentially emitted from the light source device 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.

  Thus, according to the fifth embodiment, the projector device 30 is configured using the light source devices shown in FIG. 1, FIG. 6, FIG. 9 or FIG. As in the embodiment, in the high luminance mode, the luminance of the G color laser light is supplemented, and a color image or the like is projected onto the screen by the high luminance G color illumination light S having a wide G color gamut. Furthermore, in the maximum luminance mode, the luminance of the G color laser light can be supplemented to output the G luminance illumination light S with a wide G color gamut and a high luminance. And a color image or the like can be projected by the illumination light S with higher brightness. Further, in the pure color mode, the illumination light S with a wide color gamut can be output, and a color image or the like can be projected with the illumination light S with a wider color gamut.

  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 includes a blue light source that emits light in a blue wavelength region, a red light source that emits light in a red wavelength region, a green light source that emits light in a green wavelength region, and the light from the blue light source. That emits light in a wavelength region including the green wavelength region, light from the blue light source, light from the red light source, light from the green light source, and phosphor An optical system that guides the light from the light source to the same optical path, and the light emitted from the green light source is irradiated to the phosphor and diffused in the phosphor.

The invention corresponding to claim 2 includes a rotating body having a diffusion region and a fluorescent region in a circumferential direction of the substrate, the diffusion region has a diffusion surface for diffusing incident light, and the fluorescent region has The light source device according to claim 1, wherein the phosphor is disposed.
According to a third aspect of the present invention, in the substrate, the fluorescent region is made of metal, the diffusion region is made of glass, and the fluorescent region emits light in a wavelength region including the green wavelength region emitted by the phosphor. The light source device according to claim 2, wherein the excitation light is reflected toward the incident side, and the incident light is transmitted and diffused in the diffusion region.

According to a fourth aspect of the present invention, the substrate is made of glass, and the fluorescent region reflects light in a wavelength region including the green wavelength region emitted from the phosphor to a side on which the excitation light is incident. The light source device according to claim 2, further comprising a film, wherein the diffusion region transmits and diffuses incident light.
According to a fifth aspect of the invention, the optical system is disposed between the blue light source, the red light source, the green light source, and the rotating body, and is emitted from the blue light source, the red light source, and the green light source. The light source device according to claim 2, further comprising a beam splitter that transmits light and reflects light emitted from the rotating body.

  According to a sixth aspect of the present invention, the beam splitter includes a transmission region that transmits light in a visible light wavelength region at a central portion thereof, and is provided in a region excluding the transmission region on the surface of the beam splitter on the rotating body side. The light source device according to claim 5, wherein a phosphor emission light reflecting film that reflects light emitted from the phosphor is formed.

  The invention corresponding to claim 7 emits a first blue light source and a second blue light source that emit light in the blue wavelength region, a red light source that emits light in the red wavelength region, and light in the green wavelength region. A green light source, a phosphor that receives light of the first blue light source as excitation light, and emits light in a wavelength region including the green wavelength region, light from the second blue light source, and red light source And an optical system for guiding the light from the green light source and the light from the phosphor on the same optical path, and the light emitted from the green light source is irradiated onto the phosphor, The light source device is characterized by being diffused by the light source.

  The invention corresponding to claim 8 includes a rotating body having a fluorescent region in a circumferential direction of the substrate, the fluorescent material is disposed in the fluorescent region, and the substrate reflects light emitted by the fluorescent material. The light source device according to claim 7, wherein in the fluorescent region, light in a wavelength region including the green wavelength region emitted from the phosphor is reflected to a side on which the excitation light is incident. .

The invention corresponding to claim 9 includes a light source device, a display element, a light source side optical system that guides light from the light source device to the display element, and a projection optical system that projects an image emitted from the display element. And a control means for controlling the light source device and the display element, wherein the light source device is the light source device according to any one of claims 1 to 8.
The invention corresponding to claim 10 simultaneously drives an excitation light source that emits excitation light that excites the phosphor, and a light source that emits light included in a wavelength region where the phosphor emits light upon receiving the excitation light. Then, the light emitted from the light source is diffused by the phosphor to form diffused light, and the light emitted from the phosphor and the diffused light are combined and output.

  R-LD: R color laser diode, G-LD: G color laser diode, B-LD: B color laser diode, P: optical system, BS1: first beam splitter, BS2: second beam splitter, GRM1: Third beam splitter, 1, 2, 4, 6, 8, 9, 13: optical lens, 3a, 3b: phosphor wheel, GRM2: fourth beam splitter, 5, 7: mirror, 10: light tunnel ( LT), 3-1, 3-3: fluorescent region (fluorescent plate), 3-2: diffusion region (diffusion plate), 11: drive motor, 12: control unit, R-LED: R color light emitting diode, B-LED : B color light emitting diode, GRM3: Fifth beam splitter, BTM: Sixth beam splitter, 40: Projector device, 41: CPU, 42: Operation unit, 43: Main memory, 44: Program Frame memory, 45: System bus, 46: input unit, 47: image conversion unit, 48: projection processor, 49: audio processing unit, 50: light source device, 51: micro-mirror element, 52: mirror, 54: speaker unit.

Claims (10)

A blue light source that emits light in the blue wavelength region;
A red light source that emits light in the red wavelength region;
A green light source that emits light in the green wavelength region;
A phosphor that receives light from the blue light source as excitation light and emits light in a wavelength region including the green wavelength region;
An optical system for guiding the light from the blue light source, the light from the red light source, the light from the green light source, and the light from the phosphor onto the same optical path;
With
Light emitted from the green light source is applied to the phosphor and diffused in the phosphor. A rotating body having a diffusion region and a fluorescent region in the circumferential direction of the substrate;
The diffusion region has a diffusion surface for diffusing incident light,
The light source device according to claim 1, wherein the phosphor is disposed in the fluorescent region. The substrate is formed of the fluorescent region as a metal and the diffusion region as glass,
The fluorescent region reflects light in a wavelength region including the green wavelength region emitted by the phosphor to a side where the excitation light is incident, and the diffusion region transmits and diffuses the incident light. Item 3. The light source device according to Item 2. The substrate is formed of glass;
The fluorescent region includes a reflective film that reflects light in a wavelength region including the green wavelength region emitted from the phosphor toward the side on which the excitation light is incident, and the diffusion region transmits and diffuses incident light. The light source device according to claim 2.   The optical system is disposed between the blue light source, the red light source, the green light source, and the rotating body, and transmits light emitted from the blue light source, the red light source, and the green light source, and from the rotating body. 5. The light source device according to claim 2, further comprising a beam splitter that reflects the emitted light.   The beam splitter is provided with a transmission region that transmits light in the visible wavelength region at the center thereof, and light emitted from the phosphor in a region other than the transmission region on the surface of the beam splitter of the beam splitter. The light source device according to claim 5, wherein a phosphor-emitted light reflecting film that reflects light is formed. A first blue light source and a second blue light source that emit light in a blue wavelength region;
A red light source that emits light in the red wavelength region;
A green light source that emits light in the green wavelength region;
A phosphor that receives light from the first blue light source as excitation light and emits light in a wavelength region including the green wavelength region;
An optical system for guiding the light from the second blue light source, the light from the red light source, the light from the green light source, and the light from the phosphor onto the same optical path;
With
Light emitted from the green light source is applied to the phosphor and diffused in the phosphor. A rotating body having a fluorescent region in the circumferential direction of the substrate,
The phosphor is disposed in the fluorescent region,
The substrate reflects light emitted from the phosphor, and the phosphor region reflects light in a wavelength region including the green wavelength region emitted from the phosphor to a side on which the excitation light is incident. The light source device according to claim 7. A light source device, a display element, a light source side optical system that guides light from the light source device to the display element, a projection optical system that projects an image emitted from the display element, and the light source device and the display element are controlled. Control means to
With
9. The projector device according to claim 1, wherein the light source device is the light source device according to any one of claims 1 to 8. A first laser light source that emits excitation light; a phosphor that receives the excitation light and emits light in a wavelength region including a green wavelength region; and a second laser light source that emits light in a green wavelength region. In a light source driving method of a light source device that sequentially emits light in different wavelength regions in a time-division manner cyclically,
When the phosphor emits light in a wavelength region including the green wavelength region upon receiving excitation light from the first laser light source, the second laser light source is simultaneously driven to generate the green wavelength region. Is diffused by the phosphor ,
A light source driving method comprising combining and outputting light in a wavelength region including the green wavelength region and diffused light in the green wavelength region .

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