JP2007156270A - Light source device and projection-type image display device - Google Patents

Light source device and projection-type image display device Download PDF

Info

Publication number
JP2007156270A
JP2007156270A JP2005353913A JP2005353913A JP2007156270A JP 2007156270 A JP2007156270 A JP 2007156270A JP 2005353913 A JP2005353913 A JP 2005353913A JP 2005353913 A JP2005353913 A JP 2005353913A JP 2007156270 A JP2007156270 A JP 2007156270A
Authority
JP
Japan
Prior art keywords
light
light source
phosphor layer
color
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005353913A
Other languages
Japanese (ja)
Inventor
Makoto Kitagawa
Sakae Saito
Shigeru Shibazaki
真 北川
茂 柴崎
栄 齋藤
Original Assignee
Sharp Corp
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp, シャープ株式会社 filed Critical Sharp Corp
Priority to JP2005353913A priority Critical patent/JP2007156270A/en
Publication of JP2007156270A publication Critical patent/JP2007156270A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device having a proper color balance and favorable brightness of projection light, allowing effective use of UV light, emitted from the light source and suppressing thermal or solarization damages on a phosphor layer, and to provide a projection-type image display device that is equipped with the light source device. <P>SOLUTION: The light source device 12 has a color wheel 4, having a phosphor layer 41 comprising a fluorescent glass and a filter 42 comprising a multilayered film. The phosphor layer 41 includes a red phosphor layer, green phosphor layer and blue phosphor layer that convert UV light into red, green and blue visible lights, respectively. The red light, converted from UV light in the red phosphor layer, is superimposed on the red light made incident on the red phosphor layer, transmits through the filter 42 and is exited from the color wheel 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projection-type image display device such as a light source device and a projector.

  Projection-type image display devices such as projectors include a light source device that irradiates a display panel by modulating light emitted from a light source using a condensing optical system, and synthesizes projection light according to an image displayed on the display panel. The projection lens is configured to project and display on the screen.

  Conventionally, as a light source device of a projector, light emitted from a light source is reflected as parallel light by a reflector having a shape such as a parabolic curved surface or an elliptic curved surface, and irradiated on a display panel, after being converged by a reflector, There are those that convert the divergent light into parallel light and irradiate the display panel.

Projection methods for projectors include a transmission method in which modulated light incident from a light source device is emitted as transmitted light using a transmission type liquid crystal panel or the like, and a modulation type light is reflected in a reflective liquid crystal panel or DMD (digital micromirror). There is a reflection method in which the light is emitted as reflected light using a device (registered trademark of TI) or the like.
Here, the modulated light is light that is modulated, that is, light that has been changed, and the light that has been reflected, refracted, or transmitted through all or part of the light. Shall be included.

  FIG. 10 is a schematic diagram showing a light source device of a conventional projector, in which 60 is a light source device. In the light source device 60, an ultra-high pressure mercury lamp 61 is disposed inside an elliptical curved reflector 62, and a color wheel 65, a glass rod 63, a first condenser lens 64, and a first condenser lens 64 are provided on the opening side of the reflector 62. Two condensing lenses 66 are sequentially arranged.

  The ultra-high pressure mercury lamp 61 is provided so that the center thereof coincides with the first focal point F 1 of the reflector 62. The light emitted from the ultra-high pressure mercury lamp 61 is condensed by the reflector 62 at a position corresponding to the second focal point F2 of the reflector 62 in the color wheel 65, passes through the glass rod 63, and the first condenser lens 64 and After being converted into parallel light by the second condenser lens 66, the DMD display panel (not shown) is irradiated. The glass rod 63 reduces luminance unevenness when the DMD display panel is irradiated.

  An image is displayed on the screen by projecting the light transmitted through the DMD display panel or the light reflected by the DMD display panel onto the screen. In general, since a projector has a large image projection area, a light source with high luminance is required, and an ultra-high pressure mercury lamp 61 with high luminance is usually used as a light source, like the light source device 60.

However, the emission spectrum of the ultra-high pressure mercury lamp 61 is biased, and the red (hereinafter referred to as R) component compared to the green (hereinafter referred to as G) component and the blue (hereinafter referred to as B) component. However, there is a problem that the color balance is poor when used as a light source of a projector, and it is difficult to reproduce the color of an image.
Therefore, as a countermeasure for enhancing the R color, at present, the lamp current is instantaneously increased only during the R color display to increase the R color component, but this affects the lamp life. In addition, as shown in FIG. 5, the color wheel is adjusted by increasing the angle of the R color occupancy of the color wheel and decreasing the angles of the G and B colors, so that the brightness cannot be improved. there were.

  Therefore, it is equipped with a phosphor layer that converts ultraviolet light generated by the light source into visible light such as R, and by adjusting the color balance of the light source by increasing the amount of light such as the insufficient R component, it is generated by the light source. A projection-type image display device having a light source device that effectively uses ultraviolet light has been proposed.

  In Patent Document 1, a light-emitting diode that emits ultraviolet light is used as a light source, and a visible light reflecting film that transmits ultraviolet light and reflects visible light is formed on the surface of the color wheel on the light source side. An invention of a projection-type image display device in which phosphor layers that emit visible light corresponding to R, G, and B, respectively, are formed when irradiated with ultraviolet light is disclosed.

  Patent Document 2 discloses a planar light source including an ultraviolet light emitting element, a planar phosphor having a phosphor layer that converts ultraviolet light emitted from the planar light source into fluorescent light of a predetermined color, and the surface. Disclosure of Invention of Projection Type Image Display Device Comprising Light Modulating Unit that Modulates Light Emitted from Shaped Phosphor Based on Given Image Signal and Projection Optical Unit for Projecting Light Modulated by the Light Modulating Unit Has been.

In Patent Document 3, the light emitted from the light source and the light emitted from the light source, reflected by the reflector, and emitted are condensed in the cylindrical fluorescent glass portion, and the ions in the fluorescent glass portion are excited. An invention of a light source device for a projection-type image display device in which R color light is emitted to increase the R color component is disclosed.
JP 2004-341105 A JP 2004-325874 A JP 2004-184983 A

However, the reflection film of the above-mentioned projection type image display apparatus of Patent Document 1 reflects visible light to the light source side, and converts the light emitted from the ultraviolet light into the reflection film side after being converted from ultraviolet light into visible light. There is a problem in that visible light converted from ultraviolet light cannot be used efficiently, not being reflected on the wheel side.
Moreover, although the projection type image display apparatus of patent document 2 has the wavelength selection film | membrane which reflects the light inject | emitted on the incident side of a fluorescent substance layer to the fluorescent substance layer among the light light-emitted from the fluorescent substance layer. The phosphor layer made of a synthetic resin containing a fluorescent material is applied in a planar shape, and there is a problem that it is easily damaged by heat.
And in the projection type image display apparatus of patent document 1 and patent document 2, the filter for cutting unnecessary ultraviolet light was required for the projection optical means.
In these projection type image display devices, there is a problem that the utilization efficiency of light generated by the light source and the increase of the R component are insufficient, and the color balance is adjusted and the brightness of the projection light is insufficient.

  In the light source device of Patent Document 3, only the R component is increased, the color balance is adjusted and the brightness of the projected light is insufficient, and the ultraviolet light is cut off by the reflector, and the fluorescent light from the reflector. There was a problem that the amount of ultraviolet light reflected to the glass part side was small.

  The present invention has been made in view of such circumstances, and has a good color balance by superimposing visible light of each color converted from ultraviolet light on visible light of each color emitted from a light source, Provided is a light source device in which the projection light has a good brightness, the ultraviolet light emitted from the light source can be effectively used, and the phosphor layer is prevented from being damaged due to thermal and solarization, and the light source device An object is to provide a projection type image display device.

  A light source device according to the present invention includes a light source that emits light including visible light and ultraviolet light, a reflector that reflects light emitted from the light source, and a plurality of filters that individually transmit light of a plurality of colors including red. A color light source device comprising: a color wheel that is arranged in parallel in a circumferential direction, is arranged in a state in which a rotation axis is shifted from an optical axis, is rotated, and is sequentially irradiated with light emitted from the light source. The wheel is characterized in that at least part of a portion of each filter irradiated with the light includes a phosphor layer that emits ultraviolet light into each color of light.

In the present invention, since the ultraviolet light incident on the phosphor layer fluoresces into the light of each color, the visible light of each color converted from the ultraviolet light is superimposed on the visible light of each color emitted from the light source, and the components of each color Increase the amount. Therefore, by appropriately setting the occupying angle on the color wheel of each filter and corresponding to this, by providing a phosphor layer that fluoresces ultraviolet light into each color light, it can have a good color balance, When this light source device is incorporated in a projection type image display device, the projection light has good brightness. In addition, since light having a wavelength that was not originally included in the spectrum emitted by the light source is generated, the color region that can be expressed on the chromaticity diagram is increased, and the color reproducibility of the image is improved.
For example, when an ultra-high pressure mercury lamp is used as the light source, it is not necessary to increase the amount of power supplied to the light source during red display to increase the amount of red light emission, so the life of the light source can be extended. The burden on the circuit portion can also be reduced.
In addition, since the phosphor layer is provided on the color wheel and rotates, there is less thermal damage than in the case where the phosphor layer is fixed, and the solar substrate is colored such that the glass substrate of the color wheel is colored by ultraviolet light. Is suppressed.
And since a color wheel serves as a fluorescent light-emitting body, size reduction of a light source device is achieved.
Furthermore, since ultraviolet light that has not been used in the past can be used effectively, the light use efficiency of the light emitted from the light source is good. When this light source device is incorporated in a projection type image display device, projection optics is used. There is no need to dispose ultraviolet light by placing an ultraviolet light cut filter in the system.

  The light source device according to the present invention is characterized in that the color wheel is configured by disposing the filter and the phosphor layer on a transparent substrate.

  The light source device according to the present invention is characterized in that a phosphor layer congruent with the area occupied by each filter is disposed on the light source side of the filter.

  The light source device according to the present invention is characterized in that on the light source side of the filter, a phosphor layer having a width including a portion where the ultraviolet light is incident and having an annular shape over the entire filter is provided.

  The light source device according to the present invention is characterized in that the phosphor layer is disposed as a low refractive index layer between the multilayered constituent metal thin films of the filter.

  The light source device according to the present invention is characterized in that the spectral characteristic of each color of the filter has a performance of transmitting ultraviolet light and each color band.

  The light source device according to the present invention is characterized in that the light is condensed on a phosphor layer of a color wheel provided with the phosphor layer.

The light source device according to the present invention is characterized in that the reflector includes a multilayer film for increasing reflection of ultraviolet light.
In the present invention, since the ultraviolet light is reliably reflected by the reflector, the ultraviolet light is favorably fluorescently emitted to the light of each color, and the utilization efficiency of the light source is good.

The light source device according to the present invention includes a reflecting mirror that reflects light emitted from the color wheel toward the color wheel on the light source side of the color wheel.
In the present invention, since the light emitted from the color wheel to the light source side can be returned to the color wheel, there is no loss of visible light, and the utilization efficiency of the light emitted from the light source is further improved.

The light source device according to the present invention is characterized in that the phosphor layer is made of fluorescent glass.
In the present invention, compared to the case where the base material of the phosphor layer is a synthetic resin, it is less susceptible to thermal damage. And since a fluorescent substance layer is provided in a color wheel and rotates, solarization, such as absorbing ultraviolet light and coloring glass, is suppressed. In addition, when the phosphor layer is provided on the entire surface of the filter, the phosphor layer can also serve as a glass substrate (transparent substrate) for the color wheel, the thickness of the color wheel can be reduced, and the light source device can be downsized. It is done.

  A projection-type image display device according to the present invention includes a light source device according to any one of the above, a spatial light modulation element that modulates light emitted from the light source device based on an acquired image signal, and the spatial light. And a projection lens that projects the light modulated by the modulation element onto the projection target.

In the present invention, since the ultraviolet light incident on the phosphor layer fluoresces into each color light, the visible light of each color converted from the ultraviolet light is superimposed on the visible light of each color emitted from the light source. The component is increased and the projection light has good brightness. And by appropriately setting the occupying angle of each filter of the color wheel and corresponding to this, by providing a phosphor layer that fluoresces ultraviolet light into each color light, it can have a good color balance, Since light having a wavelength not included in the spectrum emitted from the light source is generated, the color reproducibility of the image is good.
In addition, since the ultraviolet light that has not been used in the past can be used effectively, the utilization efficiency of the light emitted from the light source is good, and in order to prevent solarization and human damage in the projection optical system. Further, it is not necessary to arrange an ultraviolet light cut filter.

As described above, according to the present invention, the ultraviolet light incident on the phosphor layer fluoresces into the light of each color, so that the visible light of each color converted from the ultraviolet light is converted into the visible light of each color emitted from the light source. Light is superimposed to increase the amount of each color component, and the projection light has good brightness. Then, by setting the occupying angle on the color wheel of each filter as appropriate and providing a phosphor layer that fluoresces ultraviolet light into each color light in accordance with this, a good color balance can be obtained. Further, since light having a wavelength that was not originally included in the spectrum emitted by the light source is generated, the color reproducibility of the image is improved.
And, for example, when using an ultra high pressure mercury lamp as the light source, it is not necessary to increase the amount of red light emission by increasing the amount of power supplied to the light source when displaying red, so the life of the light source can be extended, The burden on the circuit portion can also be reduced.
In addition, since the phosphor layer is provided on the color wheel and rotates, there is less thermal damage than in the case where the phosphor layer is fixed, and the solar substrate is colored such that the glass substrate of the color wheel is colored by ultraviolet light. Is suppressed.
Further, since the color wheel also serves as a fluorescent light emitter, the light source device can be reduced in size.
Furthermore, since it is possible to effectively utilize ultraviolet light that has not been used conventionally, the utilization efficiency of light emitted from the light source is good, and a projection-type image display device including this light source device is included in the projection optical system. There is no need to arrange an ultraviolet light cut filter.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing a projector as a projection-type image display apparatus according to Embodiment 1 of the present invention. In the figure, 1 is a projector.
The light source device 12 of the projector 1 includes a light source (extra-high pressure mercury lamp) 2, a reflector 3 for reflecting light emitted from the light source 2, light emitted from the light source 2 and light emitted from the light source 2, and the reflector 3 A color wheel 4 on which the reflected light is incident, a glass rod 5 for reducing luminance unevenness of the light emitted from the color wheel 4, a condenser lens 6, and a condenser lens 7 are provided.

  The projector 1 includes the light source device 12, a field lens 8, a total reflection prism 9, a reflective display panel 10 that reflects incident light, and a projection lens 11.

  The light source 2 is disposed so that the center portion thereof coincides with the first focal point F <b> 1 in the reflector 3. The reflector 3 has an elliptical curved surface shape, and a multilayer film 31 for increasing the reflection of ultraviolet light in the region of 300 to 400 nm is provided on the inner wall surface thereof, and the light emitted from the light source 2 including visible light and ultraviolet light is reflected. It is configured to reflect and collect light.

  FIG. 2 is a graph showing the reflectance of light of each wavelength for the conventional reflector and the reflector of the present embodiment. From FIG. 2, it can be seen that the reflectance of ultraviolet light of 300 to 400 nm is increased by having the multilayer film 31 in the reflector 3 of the present embodiment. Therefore, the ultraviolet light that has been cut by the conventional reflector can be used effectively, and the utilization efficiency of the light source 2 is improved.

  FIG. 3 is a schematic front view showing the color wheel 4, FIG. 4 is a cross-sectional view showing the color wheel 4, and FIG. 5 is a schematic rear view showing the color wheel 4. As shown in FIGS. 1 and 4, the color wheel 4 includes a phosphor layer 41 made of fluorescent glass and a filter 42 made of a multilayer film. In the phosphor layer 41, an R color phosphor layer 43 that converts ultraviolet light into R visible light, a G color phosphor layer 44 that converts ultraviolet light into G visible light, and B ultraviolet light And a B-color phosphor layer 45 that converts the light into visible light are arranged side by side in the circumferential direction with an appropriate occupation angle. In this color wheel 4, since the phosphor layer 41 also serves as a glass substrate of the color wheel, the thickness can be reduced.

  The R color phosphor layer 42 converts ultraviolet light having a wavelength of 300 to 400 nm into visible light of R color having a wavelength of 600 to 630 nm. The R color phosphor layer 42 is composed of a glass body (fluorescent glass) containing an R color light emitting phosphor represented by the following molecular formula.

In general, the molecular formula of the phosphor is expressed by (molecular formula of the host material: molecular formula of the fluorescent material).
For example, as an R color phosphor, Y 2 O 3 : Eu, Y 2 SiO 5 : Eu,
Y 3 Al 5 O 12: Eu , Zn 3 (P0 4) 2: Mn, YBO 3: Eu,
(Y, Gd) BO 3 3: Eu, GdBO 3 : Eu, ScBO 3 : Eu, LuBO 3 : Eu, and the like.

As the phosphor for G color emission, Zn 2 SiO 4 : Mn, BaAl 12 O 19 : Mn,
BaMgAl 14 O 23 : Mn, SrAl 12 O 19 : Mn, ZnAl 12 O 19 : Mn,
CaAl 12 O 19: Mn, YBO 3: Tb, LuBO 3: Tb, GdBO 3: Tb,
ScBO 3: Tb, Sr 4 Si 3 O 8 Cl 4: Eu, and the like.

As the phosphor for B-color emission, CaWO 4 : Pb, Y 2 SiO 5 : Ce,
BaMgAl 14 O 23: Eu, include like.

  In the filter 42, as shown in FIG. 5, an R color filter 46 that transmits R visible light, a G color filter 47 that transmits G visible light, and a B color that transmits B visible light. The filter 48 is juxtaposed with an occupation angle corresponding to the phosphor layer 41 in the circumferential direction.

  The color wheel 4 is disposed in a state where its rotation axis is shifted from the optical axis of the light source 2 by an appropriate distance. Light including visible light and ultraviolet light generated by the light source 2 passes through the reflector 3 and is collected in the second focal point F2 of the reflector 3 set in the phosphor layer 41, and the light is emitted from the phosphor layer 41. Irradiate the surface as a light spot. By rotating the color wheel 4, the R color phosphor layer 43, the G color phosphor layer 44, and the B color phosphor layer 45 of the phosphor layer 41 are sequentially irradiated in a ring shape.

  R-color light emitted from the light source 2 or reflected by the reflector 3 and incident on the R-color phosphor layer 43 and ultraviolet light emitted from the light source 2 or reflected by the reflector 3 enter the R-color phosphor layer 43. The R color light thus converted exits the R color phosphor layer 43 and passes through the R color filter 46. Similarly, the G color light incident on the G color phosphor layer 44 and the G color light converted by the ultraviolet light incident on the G color phosphor layer 44 are emitted from the G color phosphor layer 44, and the G color filter 47. Transparent. The B color light incident on the B color phosphor layer 45 and the B color light converted by the ultraviolet light entering the B color phosphor layer 45 are emitted from the B color phosphor layer 45 and transmitted through the B color filter 48. . These R color light, G color light, and B color light are sequentially emitted from the filter 42 as the color wheel 4 rotates.

  FIG. 6 is a graph showing the spectrum of incident light and the spectrum of emitted light of the color wheel 4. FIG. 6 shows that all of the B component, the G component, and the R component are increased. Accordingly, the color balance is improved, the brightness of the projection light such as white synthesized from the B component, the G component, and the R component is increased, and light having a long wavelength that is not included in the spectrum emitted by the light source 2 is emitted. Therefore, the color area that can be expressed on the chromaticity diagram is increased, and the color reproducibility of the obtained image is improved.

Since the R component increases, there is no need to increase the amount of R light emission by increasing the amount of power supplied to the light source 2 at the timing when the R color light is emitted from the color wheel 4. The burden on the circuit portion can be reduced.
Further, since the phosphor layer 41 is made of fluorescent glass, and the phosphor layer 41 is provided in the color wheel 4 and rotates, the phosphor layer 41 is made of a synthetic resin, and the phosphor layer 41. Compared with the case where is fixed, thermal damage is less, and solarization such as coloring of the glass substrate of the color wheel 4 by ultraviolet light is suppressed.

The light emitted from the color wheel 4 enters the glass rod 5, the luminance unevenness is reduced, and the glass rod 5 is emitted. Then, the light enters the total reflection prism 9 through the condenser lens 6 and the condenser lens 7 and further through the field lens 8.
The visible light of each color incident on the total reflection prism 9 is irradiated on the reflection type display panel 10, and the light irradiated on the reflection type display panel 10 is reflected according to the image displayed on the reflection type display panel 10 and is totally reflected. It returns to the reflecting prism 9 and is synthesized in the total reflecting prism 9. The synthesized light is projected onto a screen (not shown) through the projection lens 11, and an image is displayed.

As described above, since the ultraviolet light incident on the phosphor layer 41 fluoresces the light of each color, the visible light of each color converted from the ultraviolet light is superimposed on the visible light of each color emitted from the light source 2, and the projector 1 projection light has good brightness. Since the light emitted from the color wheel 4 has a good color balance, the color balance of the image is good, and light having a wavelength not originally included in the spectrum emitted from the light source 2 is generated. Therefore, the color reproducibility of the image is also good.
In the projector 1 of the present embodiment, since the ultraviolet light emitted from the light source 2 is effectively used, in order to prevent solarization and human damage in the projection optical system as in the conventional projector 1. There is no need to arrange an ultraviolet light cut filter.

Embodiment 2. FIG.
FIG. 7 is a schematic front view showing the color wheel 14 of the light source device according to Embodiment 2 of the present invention, and FIG. 8 is a cross-sectional view showing the color wheel 14. In FIG. 8, the same parts as those of FIG.

  In the color wheel 14 of the present embodiment, a filter 42 is provided on a glass substrate (transparent substrate) 49. A ring-shaped phosphor layer 50 is provided concentrically with the filter 42. The phosphor layer 50 is provided in the region of the filter 42 where the light emitted from the light source 2 or the light emitted from the light source 2 and reflected by the reflector 3 hits when the color wheel 14 rotates. An R color phosphor layer 51 is formed on the R color filter 46 of the filter 42, a G color phosphor layer 52 is formed on the G color filter 47, and a B color phosphor layer 53 is formed on the B color filter 48. Each is provided.

  R-color light emitted from the light source 2 or reflected by the reflector 3 and incident on the R-color phosphor layer 51 and ultraviolet light emitted from the light source 2 or reflected by the reflector 3 enter the R-color phosphor layer 51. The R color light thus converted exits the R color phosphor layer 51 and passes through the R color filter 46. Similarly, the G-color light incident on the G-color phosphor layer 52 and the G-color light converted by the ultraviolet light entering the G-color phosphor layer 52 are emitted from the G-color phosphor layer 52, and the G-color filter 47. Transparent. The B color light incident on the B color phosphor layer 53 and the B color light converted by the ultraviolet light entering the B color phosphor layer 53 are emitted from the B color phosphor layer 53 and transmitted through the B color filter 48. . These R color light, G color light, and B color light are sequentially emitted from the filter 42 as the color wheel 14 rotates.

  In the present embodiment, since the phosphor layer 50 is provided in the region where the light spot of the filter 42 hits, the ultraviolet light emitted from the light source 2 is efficiently converted into light of each color. Since the converted visible light is emitted from the filter 42 so as to be superimposed on the visible light of each color incident on the phosphor layer 50, the ultraviolet light is effectively used to increase the amount of each color component. Therefore, the brightness of the projection light such as white synthesized from the B component, G component, and R component is increased, and the color balance and color reproducibility of the image are improved.

Embodiment 3 FIG.
FIG. 9 is a cross-sectional view showing a part of the light source device according to Embodiment 3 of the present invention. In the figure, the same parts as those in FIGS. 3 and 4 are denoted by the same reference numerals.
The color wheel 24 of the present embodiment includes a phosphor layer 41 and a filter 42, and reflects light emitted from the phosphor layer 41 to the light source 2 side on the light source 2 side of the phosphor layer 41. Reflecting mirrors 54 and 54 are provided.

  In the present embodiment, the visible light converted from the ultraviolet light by the phosphor layer 41 and emitted from the phosphor layer 41 to the light source 2 side can be returned to the color wheel 24, so there is no visible light loss and the light source 2. The utilization efficiency of the light emitted from is further improved.

In the first to third embodiments, the case where the present invention is applied to a projector as a projection type image display device has been described. However, the present invention is not limited to this. Further, the light source is not limited to the ultra high pressure mercury lamp.
The color components emitted by the color wheel and the occupying angles of the respective colors of the filter are not limited to those described in the above embodiment.
The base material of the phosphor layer is not limited to glass, and a synthetic resin or the like may be used as the base material. However, when the phosphor layer is made of fluorescent glass, there is less thermal damage and it can also serve as a glass substrate for the color wheel.

Embodiment 4 FIG.
The object can also be achieved by disposing the phosphor layer as a low refractive index layer between the multilayered metal thin films of the filter. In this case, since fluorescent glass is used as an alternative to the current low refractive index material, the color wheel can be made thinner and lighter. In addition, the multilayer film structure is common and illustration is abbreviate | omitted.

It is a schematic diagram which shows the projector as a projection type image display apparatus which concerns on Embodiment 1 of this invention. It is the graph which showed the reflectance of the light of each wavelength about the conventional reflector and the reflector of this embodiment. It is a typical front view which shows a color wheel. It is sectional drawing which shows a color wheel. It is a typical back view which shows a color wheel. It is a graph which shows the spectrum of the incident light of a color wheel, and the spectrum of the emitted light. It is a typical front view which shows the color wheel of the light source device which concerns on Embodiment 2 of this invention. It is sectional drawing which shows a color wheel. It is sectional drawing which shows a part of light source device which concerns on Embodiment 3 of this invention. It is a schematic diagram which shows the light source device of the conventional projector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 2 Light source 3 Reflector 31 Multilayer film 4 Color wheel 41, 50 Phosphor layer 42 Filter 43, 51 R color phosphor layer 44, 52 G color phosphor layer 45, 53 B color phosphor layer 46 R color filter 47 G Color filter 48 B color filter 5 Glass rod 6, 7, 26 Condensing lens 8 Field lens 9 Total reflection prism 10 Reflective display panel 11 Projection lens 12 Light source device 54 Reflective mirror F1 First focus F2 Second focus

Claims (11)

  1. A light source that emits light including visible light and ultraviolet light, a reflector that reflects light emitted from the light source, and a plurality of filters that individually transmit light of a plurality of colors including red are arranged in parallel in the circumferential direction. In a light source device including a color wheel that is arranged in a state where the rotation axis is shifted from the optical axis, is rotated, and is sequentially irradiated with light emitted from the light source.
    The color wheel is provided with a phosphor layer that fluoresces ultraviolet light into light of each color at least in a part of each filter irradiated with the light.
  2.   The light source device according to claim 1, wherein the color wheel is configured by arranging the filter and the phosphor layer on a transparent substrate.
  3.   The light source device according to claim 1, wherein a phosphor layer congruent with an area occupied by each filter is disposed on a light source side of the filter.
  4.   2. The light source device according to claim 1, wherein a phosphor layer having a width including a portion where the ultraviolet light is incident is provided on the light source side of the filter, and an annular phosphor layer is provided over the entire filter.
  5.   2. The light source device according to claim 1, wherein the phosphor layer is disposed as a low refractive index layer between multi-layered metal thin films of the filter.
  6.   The light source device according to claim 5, wherein spectral characteristics of each color of the filter have a performance of transmitting ultraviolet light and the color bands.
  7.   5. The light source device according to claim 1, wherein the light is condensed on a phosphor layer of a color wheel provided with the phosphor layer.
  8.   The light source device according to claim 1, wherein the reflector includes a multilayer film that increases reflection of ultraviolet light.
  9.   9. The light source device according to claim 1, further comprising a reflecting mirror that reflects light emitted from the color wheel toward the color wheel on a light source side of the color wheel.
  10.   The light source device according to claim 1, wherein the phosphor layer is made of fluorescent glass.
  11. A light source device according to any one of claims 1 to 10,
    A spatial light modulation element that modulates light emitted from the light source device based on the acquired image signal;
    A projection type image display apparatus comprising: a projection lens that projects light modulated by the spatial light modulation element onto a projection target.
JP2005353913A 2005-12-07 2005-12-07 Light source device and projection-type image display device Pending JP2007156270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005353913A JP2007156270A (en) 2005-12-07 2005-12-07 Light source device and projection-type image display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005353913A JP2007156270A (en) 2005-12-07 2005-12-07 Light source device and projection-type image display device

Publications (1)

Publication Number Publication Date
JP2007156270A true JP2007156270A (en) 2007-06-21

Family

ID=38240697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005353913A Pending JP2007156270A (en) 2005-12-07 2005-12-07 Light source device and projection-type image display device

Country Status (1)

Country Link
JP (1) JP2007156270A (en)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007141688A1 (en) * 2006-06-02 2007-12-13 Philips Intellectual Property & Standards Gmbh Colored and white light generating lighting device
JP2010217566A (en) * 2009-03-17 2010-09-30 Casio Computer Co Ltd Light emitting device, light source device, and projector using the light source device
US20100244705A1 (en) * 2009-03-27 2010-09-30 Hajjar Roger A Detecting Screen Breakage in Display Systems
JP2010256457A (en) * 2009-04-22 2010-11-11 Casio Computer Co Ltd Light source device and projector
WO2010133090A1 (en) * 2009-05-20 2010-11-25 绎立锐光科技开发(深圳)有限公司 Light source and light converting method/apparatus thereof, and application system of the light source
WO2010142144A1 (en) * 2009-06-12 2010-12-16 绎立锐光科技开发(深圳)有限公司 Polarized light source and polarization converting method and device thereof
CN101936505A (en) * 2009-06-30 2011-01-05 卡西欧计算机株式会社 Fluorescence wheel and light supply apparatus, projecting apparatus
CN101937165A (en) * 2009-06-30 2011-01-05 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method
JP2011013316A (en) * 2009-06-30 2011-01-20 Casio Computer Co Ltd Light source device and projector
EP2290443A1 (en) * 2009-08-21 2011-03-02 Casio Computer Co., Ltd. Light source device, projection apparatus, and projection method
US20110075103A1 (en) * 2009-09-28 2011-03-31 Casio Computer Co., Ltd. Light source unit, projection apparatus, and projection method
JP2011154168A (en) * 2010-01-27 2011-08-11 Casio Computer Co Ltd Light source unit and projector
EP2360523A1 (en) * 2010-02-12 2011-08-24 Hitachi Consumer Electronics Co. Ltd. Solid-State Light Source Device
JP2011164173A (en) * 2010-02-05 2011-08-25 Hitachi Consumer Electronics Co Ltd Projection type display apparatus
JP2011227468A (en) * 2010-03-30 2011-11-10 Panasonic Corp Projection type image display apparatus
JP2012042964A (en) * 2011-09-20 2012-03-01 Casio Comput Co Ltd Light source unit and projector
JP2012068647A (en) * 2011-10-21 2012-04-05 Casio Comput Co Ltd Light source device and projector
WO2012075947A1 (en) * 2010-12-08 2012-06-14 绎立锐光科技开发(深圳)有限公司 Projection system, light source system, and light source assembly
CN102566230A (en) * 2010-12-08 2012-07-11 绎立锐光科技开发(深圳)有限公司 Projection system, light source system and light source component
CN102692799A (en) * 2011-03-23 2012-09-26 台达电子工业股份有限公司 Illumination system
EP2579073A1 (en) * 2011-10-03 2013-04-10 Acer Incorporated Image generating device with improved illumination efficiency
CN103047573A (en) * 2012-12-30 2013-04-17 四川新力光源股份有限公司 Color-temperature-adjustable LED illuminating device
JP2013068950A (en) * 2011-09-22 2013-04-18 Taida Electronic Ind Co Ltd Fluorescent body device and illumination system and projector with the same
CN103064237A (en) * 2011-10-21 2013-04-24 宏碁股份有限公司 Image generation device capable of improving illumination efficiency
JP2014006540A (en) * 2013-08-21 2014-01-16 Casio Comput Co Ltd Light emitting plate, light source device, and projector
JP2014134808A (en) * 2014-02-26 2014-07-24 Casio Comput Co Ltd Light source device and projector
JP2014139689A (en) * 2014-04-01 2014-07-31 Casio Comput Co Ltd Light source device and projector
JP2014160227A (en) * 2013-01-28 2014-09-04 Panasonic Corp Illumination device and video display apparatus
JP2014527261A (en) * 2011-08-04 2014-10-09 アポトロニクス(チャイナ)コーポレイションAppotronics (China) Corporation Illumination device and projection device
CN104914657A (en) * 2011-07-08 2015-09-16 深圳市绎立锐光科技开发有限公司 Projection system, light source system and light source assembly
JP2016001669A (en) * 2014-06-12 2016-01-07 日亜化学工業株式会社 Light source apparatus and projector
TWI556052B (en) * 2015-01-14 2016-11-01 台灣彩光科技股份有限公司 Optical color wheel assembly and optical color wheel thereof
US9631792B2 (en) 2010-12-08 2017-04-25 Appotronics China Corporation Light source system employing wavelength conversion materials and color filters
CN106908995A (en) * 2017-03-29 2017-06-30 深圳市国显科技有限公司 A kind of field sequence LCD device and projecting apparatus of use quanta point material
CN106933009A (en) * 2015-12-30 2017-07-07 深圳市光峰光电技术有限公司 Light supply apparatus and the optical projection system including the light supply apparatus
KR101780318B1 (en) * 2011-08-27 2017-10-10 아포트로닉스 코포레이션 리미티드 Projection System and Light Emitting Device thereof
US10281810B2 (en) 2011-09-22 2019-05-07 Delta Electronics, Inc. Projection apparatus comprising phosphor wheel coated with phosphor agents for converting waveband light
US10688527B2 (en) 2011-09-22 2020-06-23 Delta Electronics, Inc. Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights with different wavelength peaks

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003242930A (en) * 2002-02-15 2003-08-29 Seiko Epson Corp Lamp, illumination device, and projector
JP2004184983A (en) * 2002-11-21 2004-07-02 Sharp Corp Light source device
JP2004325874A (en) * 2003-04-25 2004-11-18 Seiko Epson Corp Projection type display device
JP2004341105A (en) * 2003-05-14 2004-12-02 Nec Viewtechnology Ltd Projection type display device
JP2005266509A (en) * 2004-03-19 2005-09-29 Sony Corp Picture display device
JP2006119440A (en) * 2004-10-22 2006-05-11 Olympus Corp Surface sequential illuminating apparatus and image projecting apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003242930A (en) * 2002-02-15 2003-08-29 Seiko Epson Corp Lamp, illumination device, and projector
JP2004184983A (en) * 2002-11-21 2004-07-02 Sharp Corp Light source device
JP2004325874A (en) * 2003-04-25 2004-11-18 Seiko Epson Corp Projection type display device
JP2004341105A (en) * 2003-05-14 2004-12-02 Nec Viewtechnology Ltd Projection type display device
JP2005266509A (en) * 2004-03-19 2005-09-29 Sony Corp Picture display device
JP2006119440A (en) * 2004-10-22 2006-05-11 Olympus Corp Surface sequential illuminating apparatus and image projecting apparatus

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007141688A1 (en) * 2006-06-02 2007-12-13 Philips Intellectual Property & Standards Gmbh Colored and white light generating lighting device
US8523924B2 (en) 2006-06-02 2013-09-03 Koninklijke Philips N.V. Colored and white light generating lighting device
US8231227B2 (en) 2009-03-17 2012-07-31 Casio Computer Co., Ltd. Light emitting device, light source unit and projector using same light source unit
JP4678556B2 (en) * 2009-03-17 2011-04-27 カシオ計算機株式会社 Light emitting device, light source device, and projector using the light source device
JP2010217566A (en) * 2009-03-17 2010-09-30 Casio Computer Co Ltd Light emitting device, light source device, and projector using the light source device
US20100244705A1 (en) * 2009-03-27 2010-09-30 Hajjar Roger A Detecting Screen Breakage in Display Systems
JP2010256457A (en) * 2009-04-22 2010-11-11 Casio Computer Co Ltd Light source device and projector
WO2010133090A1 (en) * 2009-05-20 2010-11-25 绎立锐光科技开发(深圳)有限公司 Light source and light converting method/apparatus thereof, and application system of the light source
US9152021B2 (en) 2009-05-20 2015-10-06 Appotronics Ltd. Light source, wavelength conversion method, wavelength conversion device, and system for light source
CN101893204B (en) * 2009-05-20 2012-03-07 绎立锐光科技开发(深圳)有限公司 Light source and light conversion method thereof, light converter and application system of light source
US8888297B2 (en) 2009-06-12 2014-11-18 Appotronics Corporation Limited Polarized light source and polarization converting method and device thereof
WO2010142144A1 (en) * 2009-06-12 2010-12-16 绎立锐光科技开发(深圳)有限公司 Polarized light source and polarization converting method and device thereof
JP2011013316A (en) * 2009-06-30 2011-01-20 Casio Computer Co Ltd Light source device and projector
CN101937165A (en) * 2009-06-30 2011-01-05 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method
JP4742349B2 (en) * 2009-06-30 2011-08-10 カシオ計算機株式会社 Light source device and projector
US8308306B2 (en) 2009-06-30 2012-11-13 Casio Computer Co., Ltd. Light source unit utilizing laser for light source and projector
TWI460471B (en) * 2009-06-30 2014-11-11 Casio Computer Co Ltd Light source unit utilizing laser for light source and projector
US8646919B2 (en) 2009-06-30 2014-02-11 Casio Computer Co., Ltd. Light source unit utilizing laser for light source and projector
CN101936505A (en) * 2009-06-30 2011-01-05 卡西欧计算机株式会社 Fluorescence wheel and light supply apparatus, projecting apparatus
CN101937165B (en) * 2009-06-30 2012-09-05 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method
CN101995750B (en) * 2009-08-21 2015-06-17 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method
EP2290443A1 (en) * 2009-08-21 2011-03-02 Casio Computer Co., Ltd. Light source device, projection apparatus, and projection method
US8444273B2 (en) 2009-08-21 2013-05-21 Casio Computer Co., Ltd. Light source device, projection apparatus, and projection method
CN101995750A (en) * 2009-08-21 2011-03-30 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method
US8272745B2 (en) 2009-08-21 2012-09-25 Casio Computer Co., Ltd. Light source device, projection apparatus, and projection method
US8403493B2 (en) * 2009-09-28 2013-03-26 Casio Computer Co., Ltd. Projection apparatus and projection method for controlling emission of plural color light sources having different luminous efficiencies
US20110075103A1 (en) * 2009-09-28 2011-03-31 Casio Computer Co., Ltd. Light source unit, projection apparatus, and projection method
JP2011154168A (en) * 2010-01-27 2011-08-11 Casio Computer Co Ltd Light source unit and projector
JP2011164173A (en) * 2010-02-05 2011-08-25 Hitachi Consumer Electronics Co Ltd Projection type display apparatus
US8593580B2 (en) 2010-02-05 2013-11-26 Hitachi Consumer Electronics Co., Ltd. Projection-type display apparatus
US9904152B2 (en) 2010-02-12 2018-02-27 Hitachi Maxell, Ltd. Solid-state light source device
US8662678B2 (en) 2010-02-12 2014-03-04 Hitachi Consumer Electronics Co., Ltd. Solid-state light source device
EP2360523A1 (en) * 2010-02-12 2011-08-24 Hitachi Consumer Electronics Co. Ltd. Solid-State Light Source Device
JP2011227468A (en) * 2010-03-30 2011-11-10 Panasonic Corp Projection type image display apparatus
US9631792B2 (en) 2010-12-08 2017-04-25 Appotronics China Corporation Light source system employing wavelength conversion materials and color filters
US10042240B2 (en) 2010-12-08 2018-08-07 Appotronics Corporation Limited Projection system, light source system and light source assembly
CN102566230A (en) * 2010-12-08 2012-07-11 绎立锐光科技开发(深圳)有限公司 Projection system, light source system and light source component
WO2012075947A1 (en) * 2010-12-08 2012-06-14 绎立锐光科技开发(深圳)有限公司 Projection system, light source system, and light source assembly
US10073334B2 (en) 2010-12-08 2018-09-11 Appotronics Corporation Limited Projection system, light source system and light source assembly
CN102566230B (en) * 2010-12-08 2015-05-27 深圳市绎立锐光科技开发有限公司 Projection system, light source system and light source component
US9904158B2 (en) 2010-12-08 2018-02-27 Appotronics Corporation Limited Projection system, light source system and light source assembly
JP2012203410A (en) * 2011-03-23 2012-10-22 Taida Electronic Ind Co Ltd Illumination system
CN102692799A (en) * 2011-03-23 2012-09-26 台达电子工业股份有限公司 Illumination system
TWI486699B (en) * 2011-03-23 2015-06-01 Delta Electronics Inc Illumination system
CN102692799B (en) * 2011-03-23 2014-10-29 台达电子工业股份有限公司 Illumination system
CN105045024B (en) * 2011-07-08 2017-08-29 深圳市绎立锐光科技开发有限公司 Optical projection system, light-source system and light source assembly
CN104914657A (en) * 2011-07-08 2015-09-16 深圳市绎立锐光科技开发有限公司 Projection system, light source system and light source assembly
CN104965385A (en) * 2011-07-08 2015-10-07 深圳市绎立锐光科技开发有限公司 Projection system, light source system and light source assembly
CN105045024A (en) * 2011-07-08 2015-11-11 深圳市绎立锐光科技开发有限公司 Projection system, light source system and light source assembly
JP2014527261A (en) * 2011-08-04 2014-10-09 アポトロニクス(チャイナ)コーポレイションAppotronics (China) Corporation Illumination device and projection device
KR101780318B1 (en) * 2011-08-27 2017-10-10 아포트로닉스 코포레이션 리미티드 Projection System and Light Emitting Device thereof
JP2012042964A (en) * 2011-09-20 2012-03-01 Casio Comput Co Ltd Light source unit and projector
US9726335B2 (en) 2011-09-22 2017-08-08 Delta Electronics, Inc. Phosphor device and manufacturing method thereof having a second phosphor agent to increase the luminous intensity of a converted color light
US10688527B2 (en) 2011-09-22 2020-06-23 Delta Electronics, Inc. Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights with different wavelength peaks
US10758937B2 (en) 2011-09-22 2020-09-01 Delta Electronics, Inc. Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights
US10310363B2 (en) 2011-09-22 2019-06-04 Delta Electronics, Inc. Phosphor device with spectrum of converted light comprising at least a color light
US9274407B2 (en) 2011-09-22 2016-03-01 Delta Electronics, Inc. Phosphor device and illumination system and projection apparatus with the same
US10281810B2 (en) 2011-09-22 2019-05-07 Delta Electronics, Inc. Projection apparatus comprising phosphor wheel coated with phosphor agents for converting waveband light
JP2013068950A (en) * 2011-09-22 2013-04-18 Taida Electronic Ind Co Ltd Fluorescent body device and illumination system and projector with the same
US9024241B2 (en) 2011-09-22 2015-05-05 Delta Electronics, Inc. Phosphor device and illumination system for converting a first waveband light into a third waveband light which is separated into at least two color lights and projection apparatus with the same
EP2579073A1 (en) * 2011-10-03 2013-04-10 Acer Incorporated Image generating device with improved illumination efficiency
JP2012068647A (en) * 2011-10-21 2012-04-05 Casio Comput Co Ltd Light source device and projector
CN103064237A (en) * 2011-10-21 2013-04-24 宏碁股份有限公司 Image generation device capable of improving illumination efficiency
CN103047573A (en) * 2012-12-30 2013-04-17 四川新力光源股份有限公司 Color-temperature-adjustable LED illuminating device
JP2014160227A (en) * 2013-01-28 2014-09-04 Panasonic Corp Illumination device and video display apparatus
JP2014006540A (en) * 2013-08-21 2014-01-16 Casio Comput Co Ltd Light emitting plate, light source device, and projector
JP2014134808A (en) * 2014-02-26 2014-07-24 Casio Comput Co Ltd Light source device and projector
JP2014139689A (en) * 2014-04-01 2014-07-31 Casio Comput Co Ltd Light source device and projector
US10139715B2 (en) 2014-06-12 2018-11-27 Nichia Corporation Light source device and projector
JP2016001669A (en) * 2014-06-12 2016-01-07 日亜化学工業株式会社 Light source apparatus and projector
TWI556052B (en) * 2015-01-14 2016-11-01 台灣彩光科技股份有限公司 Optical color wheel assembly and optical color wheel thereof
CN106933009A (en) * 2015-12-30 2017-07-07 深圳市光峰光电技术有限公司 Light supply apparatus and the optical projection system including the light supply apparatus
CN106908995A (en) * 2017-03-29 2017-06-30 深圳市国显科技有限公司 A kind of field sequence LCD device and projecting apparatus of use quanta point material

Similar Documents

Publication Publication Date Title
JP6084666B2 (en) Projection device
KR20170056494A (en) Light source device and image display apparatus
US9644803B2 (en) Light source and image projection apparatus
JP6283932B2 (en) Lighting device and video display device
KR101325001B1 (en) Light source unit and projector
KR101623004B1 (en) Light source unit and projector
JP5979365B2 (en) Light source device and image display device
US8723142B2 (en) Light source device and projector
US9348204B2 (en) Light source module with wavelength conversion module and projection apparatus
US20180080627A1 (en) Light sources system and projection device using the same
JP6056001B2 (en) Light source device and projection display device
KR101292700B1 (en) Light source unit utilizing laser for light source and projector
JP5870259B2 (en) Illumination device and projection display device including the illumination device
JP5987368B2 (en) Illumination device and projection device
US8926098B2 (en) Illumination system and projection apparatus
JP5429079B2 (en) Light source device and projection display device
JP5679358B2 (en) Illumination device and projection display device using the same
TWI437350B (en) Illumination system and wavelength-transforming device thereof
US8593580B2 (en) Projection-type display apparatus
JP5979416B2 (en) Light source device and image display device
US8354790B2 (en) Light source unit which shines visible excitation light onto phosphors on a rotatable base material, and projector including the light source
CN102289141B (en) Illumination device and image display apparatus
KR100846805B1 (en) Color wheel, visible light source, projective image display apparatus, and projective image display method
KR101468131B1 (en) Illumination device including a color selecting panel for recycling unwanted light
US9146453B2 (en) Light-emitting device and projection apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080220

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110325

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110419

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110809