WO2012127554A1 - 蛍光体を備えた照明光学系およびプロジェクタ - Google Patents
蛍光体を備えた照明光学系およびプロジェクタ Download PDFInfo
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- WO2012127554A1 WO2012127554A1 PCT/JP2011/056525 JP2011056525W WO2012127554A1 WO 2012127554 A1 WO2012127554 A1 WO 2012127554A1 JP 2011056525 W JP2011056525 W JP 2011056525W WO 2012127554 A1 WO2012127554 A1 WO 2012127554A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
- F21K2/06—Non-electric light sources using luminescence; Light sources using electrochemiluminescence using chemiluminescence
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/141—Beam splitting or combining systems operating by reflection only using dichroic mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2073—Polarisers in the lamp house
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/08—Sequential recording or projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3158—Modulator illumination systems for controlling the spectrum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3167—Modulator illumination systems for polarizing the light beam
Definitions
- the present invention relates to an illumination optical system including a phosphor that emits fluorescence by excitation light from a light source, and a projector including the illumination optical system.
- LED Liquid Crystal Display
- DLP Digital Light Processing
- Patent Document 1 JP 2010-237443 A (hereinafter referred to as Patent Document 1) and JP 2010-256457 A (hereinafter referred to as Patent Document 2), the phosphor is irradiated with excitation light from the phosphor.
- An illumination optical system and a projector that obtain light emission in a predetermined wavelength band are disclosed.
- the illumination optical system (light source device) described in these patent documents includes: a light source that emits laser light in a blue wavelength region; and a light-emitting wheel that is provided with a light emitter that emits light emitted from the light source as excitation light.
- the light emitting wheel includes a red region provided with a light emitter that emits light in the red wavelength region when excited by light from a light source, a green region provided with a light emitter that emits light in the green wavelength region, and a blue wavelength. And a blue region that transmits light in the region.
- the light emitter of the light emitting wheel is formed on the reflective layer.
- the light emitting wheel is configured to be rotatable.
- the blue light emitted from the light source by the rotation of the phosphor wheel sequentially irradiates the red region, the green region, and the transmission region of the light emitting wheel. Red light and green light emitted from the light emitter are reflected by the reflective layer.
- the red light and green light reflected by the reflective layer and the blue light transmitted through the transmission region are synthesized by a dichroic mirror or a relay optical system.
- the synthesized light is irradiated onto a digital mirror device (DMD).
- DMD digital mirror device
- the light of each color emitted in a time-division manner by the light emitting wheel is spatially modulated according to the input image by the DMD, and projected onto the screen through the projection lens.
- the optical path of blue light is different from the optical paths of red light and green light. This is because blue light is transmitted through the phosphor wheel and red light and green light are reflected by the phosphor wheel. Therefore, an optical system through which blue light passes is different from an optical system through which red light and green light pass.
- An optical system that synthesizes the optical paths of light of each color is indispensable so that blue light, red light, and green light passing through different optical paths are emitted in the same direction from the illumination optical system.
- An illumination optical system includes a light source that emits light having a first wavelength, a phosphor unit, an optical element, and an optical path between the optical element and the phosphor unit. / 4 wavelength plate.
- the phosphor unit includes a phosphor region provided with a phosphor that emits fluorescence having a wavelength different from the first wavelength when irradiated with light having the first wavelength, and a reflection region that reflects light having the first wavelength. .
- the phosphor unit is movable so that light from the light source is sequentially irradiated onto the phosphor region and the reflection region.
- the optical element separates light of the first wavelength into a first linearly polarized light component and a second linearly polarized light component orthogonal to the first linearly polarized light component, and the first linearly polarized light of the light emitted from the light source Lead the components to the phosphor unit.
- the light reflected by the reflection region and the light emitted by the phosphor region are incident on the optical element again.
- the optical element emits the light having the first wavelength reflected by the reflection region and the fluorescence emitted by the phosphor region in the same direction.
- the projector of the present invention includes the illumination optical system described above.
- the light of the first wavelength reflected by the phosphor unit and the fluorescence emitted from the phosphor pass through the same optical path and optical system. Accordingly, the number of components of the illumination optical system is reduced, and the size of the illumination optical system is also reduced.
- FIG. 1 shows a configuration of a projector including an illumination optical system according to the first embodiment of the present invention.
- the projector includes an illumination optical system 10, an image forming element 22 that spatially modulates light from the illumination optical system 10, and a projection lens 24 that projects light spatially modulated by the image forming element 22.
- the illumination optical system 10 includes a light source 11 that emits light having a first wavelength, an optical element 13, a quarter-wave plate 14, and a phosphor unit 16.
- the phosphor unit 16 has a phosphor that emits fluorescence when irradiated with light of the first wavelength.
- the light source 11 not only emits light of the first wavelength emitted from the illumination optical system 10, but also functions as a light source that irradiates the phosphor with excitation light.
- the quarter wavelength plate 14 is provided between the optical element 13 and the phosphor unit 16.
- the illumination optical system 10 may include collimators 12 and 15 as necessary.
- FIG. 2 is a plan view of the phosphor unit 16 as viewed from the incident side of the excitation light.
- the phosphor unit 16 includes a reflection region 16a and phosphor regions 16b and 16c.
- the reflection region 16a is a region having a reflection film or a mirror that reflects at least light of the first wavelength.
- the phosphor region includes a first phosphor region 16b provided with a phosphor that emits light having a second wavelength longer than the first wavelength by irradiation with light having the first wavelength. And a second phosphor region 16c provided with a phosphor that emits light having a third wavelength longer than the second wavelength when irradiated with light having the first wavelength.
- the phosphor is provided on a reflection surface that reflects light.
- the first wavelength light is blue light
- the second wavelength light is green light
- the third wavelength light is red light. It is.
- the phosphor unit 16 is movable so that the irradiation spot S of the light from the light source 11 irradiates the reflection region 16a and the phosphor regions 16b and 16c in a time-sharing manner.
- the phosphor unit 16 is configured to be rotatable around a rotation axis 28 orthogonal to one surface on which the reflection region and the phosphor region are provided.
- the phosphor unit 16 is rotationally driven by a motor 17.
- the light from the light source 11 sequentially irradiates the reflection region 16 a and the phosphor regions 16 b and 16 c as the phosphor unit 16 rotates.
- the reflection region 16a and the phosphor regions 16b and 16c are generally fan-shaped regions having a central angle of a predetermined size.
- the ratio of the central angle of each of the reflection area 16a and the phosphor areas 16b and 16c matches the ratio of the time when the light from the light source 11 is irradiated. Therefore, the size of the reflection region 16a and the phosphor regions 16b and 16c, here the central angle, is set according to the use of the illumination optical system.
- the sizes of the reflection region 16a and the phosphor regions 16b and 16c can be determined based on the intensity and chromaticity coordinates of light projected on the screen through the projection lens 24 of the projector.
- the ratio of the central angles of the reflection region 16a and the phosphor regions 16b and 16c is preferably determined in consideration of the intensity and chromaticity of white color formed by combining the light of each color.
- the optical element 13 guides the first linearly polarized light component of the light emitted from the light source 11 to the phosphor unit 16.
- the light reflected by the phosphor unit 16 and the light emitted by the phosphor enter the optical element 13 again.
- the optical element 13 emits the light having the first wavelength reflected by the phosphor unit 16 and the light having the second wavelength generated by the phosphor unit 16 in the same direction.
- a dichroic mirror having a predetermined spectral transmission characteristic can be used as such an optical element 13.
- the first linearly polarized light component is the S polarized light component orthogonal to the incident surface with respect to the dichroic mirror 13.
- the second linearly polarized light component is a P polarized light component parallel to the incident surface with respect to the dichroic mirror 13.
- FIG. 3 shows the spectral transmittance characteristics of the dichroic mirror 13 and the spectrum of the light emitted from the light source 11.
- the dichroic mirror 13 has a characteristic of reflecting the S-polarized component of blue light having a wavelength of about 450 nm and transmitting the P-polarized component of blue light. Thereby, the dichroic mirror 13 can separate the light emitted from the light source 11 into an S-polarized component and a P-polarized component orthogonal to the S-polarized component.
- the dichroic mirror 13 guides only the S-polarized light component to the phosphor unit 16 substantially.
- the dichroic mirror 13 reflects light having a wavelength shorter than that of blue light with respect to the S-polarized component, and transmits light having a wavelength sufficiently longer than that of blue light. Further, the dichroic mirror 13 reflects light having a wavelength sufficiently shorter than the wavelength of blue light with respect to the P-polarized component, and transmits light having a wavelength equal to or greater than the wavelength of blue light. As a result, the dichroic mirror 13 reflects the S-polarized component and transmits the P-polarized component in the wavelength band of blue light.
- the spectrum of light emitted from the light source 11 belongs to the wavelength band of this blue light.
- the dichroic mirror 13 can be composed of dielectric multilayer films having different refractive indexes.
- the dichroic mirror having the spectral reflection characteristics shown in FIG. 3 is easily manufactured by appropriately adjusting the refractive index and film thickness of each dielectric film, the number of laminated dielectric layers, etc., and determining a desired cutoff wavelength. Is done.
- the light source 11 emits light having substantially only an S-polarized component. As a result, most of the light from the light source 11 is guided to the phosphor unit 16 via the dichroic mirror 13. Therefore, the light utilization efficiency of the illumination optical system 10 is improved.
- a blue laser which emits light having a blue wavelength, for example, a wavelength in the vicinity of 450 nm can be used.
- the irradiation spot S of excitation light can have a very small area. Thereby, the radiation area to the phosphor unit 16 is reduced, and a highly efficient illumination optical system with a small etendue can be configured.
- the light emitted from the light source 11 is collimated by the collimator 12.
- the S-polarized component of the parallel light is reflected by the dichroic mirror 13 and guided to the phosphor unit 16.
- the collimator 12 is composed of a single lens, but the collimator 12 may be a lens system composed of a plurality of lenses.
- S-polarized light reflected by the dichroic mirror 13 enters the phosphor unit 16 through the quarter-wave plate 14 and the collimator 15.
- the S-polarized light is made circularly polarized by the quarter-wave plate 14, and this circularly polarized light is condensed on the reflection region 16a or the phosphor regions 16b and 16c of the phosphor unit 16.
- the collimator 15 is a lens system composed of two lenses, but the collimator 15 may be a single lens or a lens system composed of three or more lenses.
- the green light converted into parallel light passes through the quarter-wave plate 14 and enters the dichroic mirror 13 again. Since the Lambertian diffused light emitted from the phosphor is unpolarized light, so-called random polarization, the polarization state of the light does not change even if it passes through the quarter-wave plate 14.
- Green light passes through the dichroic mirror 13 as shown in FIG. Therefore, the green light is emitted in a direction different from the position where the light source 11 is disposed.
- red light When light having the first wavelength is incident on the second phosphor region 16c of the phosphor unit 16, red light is emitted from the phosphor. This red light enters the dichroic mirror 13 again through the same optical path as that of the green light emitted from the first phosphor region 16b. The red light passes through the dichroic mirror 13 as shown in FIG. Therefore, the red light is emitted in the same direction as the green light.
- the blue light guided from the light source 11 to the phosphor unit 16 enters the reflection region 16a of the phosphor unit 16, the blue light is reflected.
- the reflected blue light passes through the collimator lens 15 and the quarter-wave plate 14 through the same optical path as the red light and green light emitted from the phosphor regions 16b and 16c.
- the blue light reflected by the reflection region 16 a is changed from circularly polarized light to P-polarized light by the 1 ⁇ 4 wavelength plate 14 and enters the dichroic mirror 13.
- the P-polarized blue light passes through the dichroic mirror as shown in FIG. Therefore, the blue light reflected by the reflection region 16a is emitted from the illumination optical system 10 through the same optical path as the green light and the red light.
- the dichroic mirror 13 functions as a polarization beam splitter for light in the blue wavelength region.
- the blue light reflected by the reflection region 16a of the phosphor unit is emitted in a direction different from the light source 11, that is, in the same direction as the green light and the red light.
- the blue light reflected by the reflection region 16a of the phosphor unit 16 and the red light and green light emitted from the phosphor regions 16b and 16c all pass through the same optical system. Therefore, since it is not necessary to use a separate optical system for each wavelength of light, the number of components of the illumination optical system 10 is reduced, and the size of the illumination optical system is also reduced.
- the light that has passed through the dichroic mirror 13 of the illumination optical system 10 is irradiated to the image forming element 22 via the integrator 18, the field lens 19, the mirror 20, the condenser lens 21, and the TIR prism 23.
- the integrator 18, the field lens 19, the condenser lens 21, and the like are provided to illuminate the image forming element 22 with light in a rectangular and uniform manner.
- the integrator 18, the field lens 19, the mirror 20, and the condenser lens 21 may be components of the illumination optical system.
- the light incident on the TIR prism 23 is reflected by the air gap surface 23a in the prism, changes its traveling direction, and is emitted toward the image forming element 22.
- the angle of the light ray incident on the image forming element 22 is appropriately adjusted.
- the reflective image forming element 22 is used.
- DMD is used as the reflective image forming element 22.
- the image forming element 22 may be a liquid crystal panel (LCD) that is a transmissive image forming element instead of the DMD.
- LCD liquid crystal panel
- Each mirror element is configured to be rotatable about a rotation angle by a predetermined angle. In this example, the mirror element rotates ⁇ 12 degrees.
- each mirror element selects whether or not to project light corresponding to each pixel to the outside of the projector.
- the DMD performs this control on the light of each color, so that the projector can display a color image on the screen.
- the projection lens 24 can be composed of an enlarged projection optical system.
- the light of each color from the illumination optical system 10 enters the image forming element 22 in a time division manner.
- the light of each color incident on the image forming element 22 is spatially modulated in accordance with input image information to be image light.
- the spatially modulated image light is projected onto the screen by the projection lens 24.
- FIG. 4 is a schematic diagram showing a configuration of a projector including the illumination optical system 40 according to the second embodiment of the present invention.
- the projector includes an illumination optical system 40, an image forming element 22 that spatially modulates light from the illumination optical system 40, and a projection lens 24 that projects light spatially modulated by the image forming element 22.
- the illumination optical system 40 includes a light source 41 that emits light having a first wavelength, an optical element 43, a quarter-wave plate 14, and a phosphor unit 16.
- the quarter wavelength plate 14 is provided between the optical element 43 and the phosphor unit 16.
- the illumination optical system 40 may include collimators 12 and 15 as necessary.
- the light source 41 in the second embodiment is preferably a blue laser that emits P-polarized excitation light.
- Light from the light source 41 is collimated by the collimator 12 and enters a dichroic mirror 43 as an optical element.
- FIG. 5 shows the spectral transmittance characteristics of the dichroic mirror 43 and the spectrum of light emitted from the light source 41.
- the dichroic mirror 43 has a characteristic of transmitting the P-polarized component of blue light and reflecting the S-polarized component of blue light.
- the dichroic mirror 43 can separate the light emitted from the light source 41 into a P-polarized component as the first linearly polarized component and an S-polarized component as the second linearly polarized component.
- the dichroic mirror 43 substantially guides only the P-polarized light component as the first linearly polarized light component to the phosphor unit 16.
- the dichroic mirror 43 transmits light having a wavelength equal to or less than the wavelength of blue light with respect to the P-polarized component, and reflects light having a wavelength sufficiently longer than the wavelength of blue light. Further, the dichroic mirror transmits light having a wavelength sufficiently shorter than the wavelength of blue light with respect to the S polarization component, and reflects light having a wavelength equal to or greater than the wavelength of blue light. Thereby, the dichroic mirror 43 reflects the S-polarized component and transmits the P-polarized component in the wavelength band of blue light. The spectrum of the light emitted from the light source 41 belongs to this blue light wavelength band.
- the dichroic mirror 43 can be composed of dielectric multilayer films having different refractive indexes.
- the dichroic mirror 43 having the spectral reflection characteristics shown in FIG. 5 can be easily adjusted by appropriately adjusting the refractive index and film thickness of each dielectric film, the number of laminated dielectric layers, etc., and determining a desired cutoff wavelength. Manufactured.
- the P-polarized component of the blue light that has passed through the dichroic mirror 43 passes through the quarter-wave plate 14 and the collimator lens 15 and enters the phosphor unit 16.
- the P-polarized light is made circularly polarized by the 1 ⁇ 4 wavelength plate 14, and this circularly polarized light is condensed on the phosphor unit 16.
- the configuration of the phosphor unit 16 is the same as that of the first embodiment.
- blue light from the light source 41 enters the phosphor regions 16b and 16c of the phosphor unit 16
- light having a wavelength longer than that of the blue light is emitted from the phosphor.
- the phosphor applied to the phosphor regions 16b and 16c emits green light or red light.
- the light emitted from the phosphor becomes parallel light by the collimator lens 15, passes through the quarter-wave plate 14, and enters the dichroic mirror 43 again.
- the dichroic mirror 43 reflects red light and green light. Thereby, the red light and the green light emitted from the phosphor regions 16 b and 16 c are reflected by the dichroic mirror 42 and emitted from the illumination optical system 40 in the same direction.
- the blue light is changed from circularly polarized light to S-polarized light by the 1 ⁇ 4 wavelength plate 14 and enters the dichroic mirror 43.
- the dichroic mirror 43 reflects S-polarized excitation light. Therefore, the blue light reflected by the reflection region 16a is emitted from the illumination optical system 40 through the same optical path as the red light and the green light.
- the number of components of the illumination optical system 40 is reduced, and the size of the illumination optical system is also reduced.
- the light reflected by the dichroic mirror 43 of the illumination optical system 40 is applied to the image forming element 22 via the integrator 18, the mirror 20, the field lens 19, the condenser lens 21 and the TIR prism 23.
- the light converted to image light by the image forming element 22 is enlarged and projected onto the screen by the projection lens 24.
- a DMD can be used as in the first embodiment.
- the integrator 18, the field lens 19, the condenser lens 21, and the like are provided to illuminate the image forming element 22 with light in a rectangular and uniform manner.
- the integrator 18, the mirror 20, the field lens 19, and the condenser lens 21 may be components of the illumination optical system 40.
- the phosphor units 10 and 40 in the first and second embodiments have two types of phosphor regions 16b and 16c. Not limited to this, the phosphor unit may have one type or three or more types of phosphor regions. The wavelength of light emitted from each phosphor region is appropriately selected according to the use of the illumination optical system.
- an illumination optical system including a phosphor unit having a reflection region and only one type of phosphor region
- light emitted from the light source and fluorescence emitted by the phosphor can be emitted in the same direction through the same optical path. Therefore, in the illumination optical system that emits two types of light, that is, light emitted from the light source and fluorescence from the phosphor, the number of components can be reduced and the size can be reduced.
- another light source may be used.
Abstract
Description
11,41 光源
12 コリメータ
13,43 ダイクロイックミラー(光学素子)
14 1/4波長板
15 コリメータ
16 蛍光体ユニット
16a 反射領域
16b 蛍光体領域
16c 蛍光体領域
17 モータ
18 インテグレータ
19 フィールドレンズ
20 ミラー
21 コンデンサーレンズ
22 画像形成素子
23 TIRプリズム
23a エアギャップ面
24 投射レンズ
Claims (10)
- 第1の波長の光を射出する光源と、
前記第1の波長の光の照射によって前記第1の波長と異なる波長の蛍光を発する蛍光体が設けられた蛍光体領域と前記第1の波長の光を反射する反射領域とを有し、前記光源からの光が前記蛍光体領域および前記反射領域に順次照射されるように可動する蛍光体ユニットと、
前記第1の波長の光を第1の直線偏光成分と前記第1の直線偏光成分に直交する第2の直線偏光成分とに分離し、前記光源から射出された光の前記第1の直線偏光成分を前記蛍光体ユニットに導き、前記反射領域で反射された光および前記蛍光体領域で発せられた光が再び入射する光学素子と、
前記光学素子と前記蛍光体ユニットとの間の光路上に設けられた1/4波長板と、を備え、
前記光学素子は、前記反射領域で反射した前記第1の波長の光および前記蛍光体領域で発せられた前記蛍光を同一の方向に出射する、照明光学系。 - 前記光源からの光の前記第1の直線偏光成分は、前記1/4波長板を通過して円偏光とされ、該円偏光が前記蛍光体ユニットに入射する、請求項1に記載の照明光学系。
- 前記光学素子は、前記第1の波長の光の前記第1の直線偏光成分を反射し、前記第1の波長の光の前記第2の直線偏光成分および前記蛍光を透過する、請求項1または2に記載の照明光学系。
- 前記第1の直線偏光成分は前記光学素子に対する入射面に直交するS偏光成分であり、前記第2の直線偏光成分は前記入射面に平行なP偏光成分である、請求項3に記載の照明光学系。
- 前記光学素子は、前記第1の波長の光の前記第1の直線偏光成分を透過し、前記第1の波長の光の前記第2の直線偏光成分および前記蛍光を反射する、請求項1または2に記載の照明光学系。
- 前記第1の直線偏光成分は前記光学素子に対する入射面に平行なP偏光成分であり、前記第2の直線偏光成分は前記入射面に直交するS偏光成分である、請求項5に記載の照明光学系。
- 前記光源は、前記第1の直線偏光成分を有する青色光を射出するレーザである、請求項1から6のいずれか1項に記載の照明光学系。
- 前記反射領域および前記蛍光体領域が設けられた一面に直交する回転軸まわりに前記蛍光体ユニットを回転駆動させるモータを有している、請求項1から7のいずれか1項に記載の照明光学系。
- 前記蛍光体領域は、前記第1の波長の光の照射によって前記第1の波長よりも長い第2の波長の蛍光を発する第1の領域と、前記第1の波長の光の照射によって前記第2の波長よりもさらに長い第3の波長の蛍光を発する第2の領域と、を含んでいる、請求項1から8のいずれか1項に記載の照明光学系。
- 請求項1から9のいずれか1項に記載の照明光学系を備えたプロジェクタ。
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EP11861827.1A EP2687903B1 (en) | 2011-03-18 | 2011-03-18 | Phosphor-equipped illumination optical system and projector |
US14/004,131 US8985775B2 (en) | 2011-03-18 | 2011-03-18 | Illumination optical system and projector including fluorophore |
JP2013505624A JP5743240B2 (ja) | 2011-03-18 | 2011-03-18 | 蛍光体を備えた照明光学系、プロジェクタ、および照射方法 |
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CN201180069447.9A CN103430093B (zh) | 2011-03-18 | 2011-03-18 | 包括荧光体的照明光学系统和投影仪 |
US14/635,364 US9229306B2 (en) | 2011-03-18 | 2015-03-02 | Illumination optical system and projector including fluorophore |
US14/959,834 US9407886B2 (en) | 2011-03-18 | 2015-12-04 | Illumination optical system and projector including fluorophore |
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US14/635,364 Continuation US9229306B2 (en) | 2011-03-18 | 2015-03-02 | Illumination optical system and projector including fluorophore |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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Publication number | Priority date | Publication date | Assignee | Title |
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US10411185B1 (en) | 2018-05-30 | 2019-09-10 | Spin Memory, Inc. | Process for creating a high density magnetic tunnel junction array test platform |
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US10971680B2 (en) | 2018-10-01 | 2021-04-06 | Spin Memory, Inc. | Multi terminal device stack formation methods |
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CN115542649B (zh) * | 2022-11-24 | 2023-04-07 | 滁州市大眼橙数字科技有限公司 | 一种投影照明光源装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009521786A (ja) * | 2005-12-23 | 2009-06-04 | スリーエム イノベイティブ プロパティズ カンパニー | Ledベースの多色偏光照明光源 |
JP2009277516A (ja) * | 2008-05-15 | 2009-11-26 | Casio Comput Co Ltd | 光源装置及びプロジェクタ |
JP2010237443A (ja) | 2009-03-31 | 2010-10-21 | Casio Computer Co Ltd | 光源装置及びプロジェクタ |
JP2010256457A (ja) | 2009-04-22 | 2010-11-11 | Casio Computer Co Ltd | 光源装置及びプロジェクタ |
JP2010262312A (ja) * | 2010-08-09 | 2010-11-18 | Necディスプレイソリューションズ株式会社 | 投写型表示装置 |
JP2011059540A (ja) * | 2009-09-14 | 2011-03-24 | Casio Computer Co Ltd | プロジェクタ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08327964A (ja) * | 1995-06-02 | 1996-12-13 | Matsushita Electric Ind Co Ltd | 投写型画像表示装置 |
JP4086664B2 (ja) | 2003-01-07 | 2008-05-14 | 三菱電機株式会社 | 照明光学系構造及び投写型表示装置 |
US20050231651A1 (en) * | 2004-04-14 | 2005-10-20 | Myers Timothy F | Scanning display system |
US7070300B2 (en) * | 2004-06-04 | 2006-07-04 | Philips Lumileds Lighting Company, Llc | Remote wavelength conversion in an illumination device |
JP4513516B2 (ja) * | 2004-11-11 | 2010-07-28 | 株式会社日立製作所 | 映像表示装置 |
JP4742349B2 (ja) | 2009-06-30 | 2011-08-10 | カシオ計算機株式会社 | 光源装置及びプロジェクタ |
JP5796272B2 (ja) * | 2009-09-28 | 2015-10-21 | カシオ計算機株式会社 | 光源装置、投影装置及び投影方法 |
JP2011075919A (ja) * | 2009-09-30 | 2011-04-14 | Casio Computer Co Ltd | 光源装置、投影装置及び投影方法 |
JP5671666B2 (ja) * | 2010-02-12 | 2015-02-18 | 日立マクセル株式会社 | 固体光源装置及び投射型表示装置 |
JP5617288B2 (ja) * | 2010-03-18 | 2014-11-05 | セイコーエプソン株式会社 | 照明装置及びプロジェクター |
CN102235618B (zh) * | 2010-04-23 | 2014-11-19 | 中强光电股份有限公司 | 照明模块与投影装置 |
JP2011248272A (ja) * | 2010-05-31 | 2011-12-08 | Sanyo Electric Co Ltd | 光源装置及び投写型映像表示装置 |
CN102375314B (zh) * | 2010-08-09 | 2013-12-04 | 台达电子工业股份有限公司 | 光源系统及其适用的投影机 |
JP2012108486A (ja) | 2010-10-21 | 2012-06-07 | Panasonic Corp | 光源装置および画像表示装置 |
JP2012123180A (ja) | 2010-12-08 | 2012-06-28 | Seiko Epson Corp | 光源装置およびプロジェクター |
-
2011
- 2011-03-18 JP JP2013505624A patent/JP5743240B2/ja active Active
- 2011-03-18 US US14/004,131 patent/US8985775B2/en active Active
- 2011-03-18 EP EP11861827.1A patent/EP2687903B1/en active Active
- 2011-03-18 WO PCT/JP2011/056525 patent/WO2012127554A1/ja active Application Filing
- 2011-03-18 CN CN201180069447.9A patent/CN103430093B/zh active Active
-
2015
- 2015-03-02 US US14/635,364 patent/US9229306B2/en active Active
- 2015-12-04 US US14/959,834 patent/US9407886B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009521786A (ja) * | 2005-12-23 | 2009-06-04 | スリーエム イノベイティブ プロパティズ カンパニー | Ledベースの多色偏光照明光源 |
JP2009277516A (ja) * | 2008-05-15 | 2009-11-26 | Casio Comput Co Ltd | 光源装置及びプロジェクタ |
JP2010237443A (ja) | 2009-03-31 | 2010-10-21 | Casio Computer Co Ltd | 光源装置及びプロジェクタ |
JP2010256457A (ja) | 2009-04-22 | 2010-11-11 | Casio Computer Co Ltd | 光源装置及びプロジェクタ |
JP2011059540A (ja) * | 2009-09-14 | 2011-03-24 | Casio Computer Co Ltd | プロジェクタ |
JP2010262312A (ja) * | 2010-08-09 | 2010-11-18 | Necディスプレイソリューションズ株式会社 | 投写型表示装置 |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012212129A (ja) * | 2011-03-23 | 2012-11-01 | Panasonic Corp | 光源装置及びそれを用いた画像表示装置 |
JP2014110109A (ja) * | 2012-11-30 | 2014-06-12 | Asahi Glass Co Ltd | 照明光学系、投影装置、偏向素子、偏光非解消拡散素子および波長選択発散状態変換素子 |
US9170475B2 (en) | 2013-02-27 | 2015-10-27 | Barco N.V. | Light valve projector with laser-phosphor light converter |
JP2014199401A (ja) * | 2013-03-15 | 2014-10-23 | セイコーエプソン株式会社 | 照明装置及びプロジェクター |
WO2014192115A1 (ja) * | 2013-05-30 | 2014-12-04 | Necディスプレイソリューションズ株式会社 | 光源装置および投写型表示装置 |
US9995996B2 (en) | 2013-12-11 | 2018-06-12 | Nec Display Solutions, Ltd. | Cooling structure, lighting optical system, and projection-type display apparatus including substrate and phosphor formed on the substrate to emit fluorescent light |
CN107077056A (zh) * | 2014-10-21 | 2017-08-18 | 欧司朗有限公司 | 具有泵浦辐射源的照明设备 |
CN107077056B (zh) * | 2014-10-21 | 2019-01-18 | 欧司朗有限公司 | 具有泵浦辐射源的照明设备 |
WO2016067822A1 (ja) * | 2014-10-28 | 2016-05-06 | ソニー株式会社 | 光源装置及びプロジェクタ |
US10067413B2 (en) | 2014-10-28 | 2018-09-04 | Sony Corporation | Light source device and projector |
US10444605B2 (en) | 2014-10-28 | 2019-10-15 | Sony Corporation | Light source device and projector |
US10284828B2 (en) | 2015-04-24 | 2019-05-07 | Nec Display Solutions, Ltd. | Projection type display system, projection-type display device, and timing adjustment method |
JP2018087839A (ja) * | 2016-11-28 | 2018-06-07 | セイコーエプソン株式会社 | 光源装置およびプロジェクター |
JP2019120863A (ja) * | 2018-01-10 | 2019-07-22 | 株式会社ライトショー・テクノロジー | 光源装置および投射型表示装置 |
CN109164589A (zh) * | 2018-09-18 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | 一种分光合光装置及光源系统 |
US11579518B2 (en) | 2020-11-06 | 2023-02-14 | Canon Kabushiki Kaisha | Light source device and image projection apparatus including the same |
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CN103430093B (zh) | 2015-05-20 |
US8985775B2 (en) | 2015-03-24 |
EP2687903A4 (en) | 2014-11-12 |
US20130343033A1 (en) | 2013-12-26 |
US9407886B2 (en) | 2016-08-02 |
US9229306B2 (en) | 2016-01-05 |
US20150177607A1 (en) | 2015-06-25 |
JPWO2012127554A1 (ja) | 2014-07-24 |
JP5743240B2 (ja) | 2015-07-01 |
EP2687903A1 (en) | 2014-01-22 |
CN103430093A (zh) | 2013-12-04 |
EP2687903B1 (en) | 2018-11-28 |
US20160088269A1 (en) | 2016-03-24 |
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