WO2004088413A1 - 光混合部材及び多灯式照明装置及び投写型映像表示装置 - Google Patents
光混合部材及び多灯式照明装置及び投写型映像表示装置 Download PDFInfo
- Publication number
- WO2004088413A1 WO2004088413A1 PCT/JP2004/004112 JP2004004112W WO2004088413A1 WO 2004088413 A1 WO2004088413 A1 WO 2004088413A1 JP 2004004112 W JP2004004112 W JP 2004004112W WO 2004088413 A1 WO2004088413 A1 WO 2004088413A1
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- Prior art keywords
- light
- optical element
- mixing member
- lens
- pitch
- Prior art date
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Classifications
-
- 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
- G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- 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
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
-
- 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
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
- G02B27/1046—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with transmissive spatial light modulators
- G02B27/1053—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with transmissive spatial light modulators having a single light modulator for all colour channels
-
- 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
- G03B21/2013—Plural light sources
-
- 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
-
- 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
- G03B21/208—Homogenising, shaping of the illumination light
-
- 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
Definitions
- the present invention relates to a light mixing member, a multi-lighting illumination device, and a projection display.
- the multi-lamp lighting device 50 is configured to combine the light beams emitted from the first light source 51 and the second light source 52 by the reflection mixing member 53. It is a thing.
- the reflection mixing member 53 has first reflection surfaces 53a and second reflection surfaces 53b alternately.
- the reflection mixing member 53 is also called a prism array.
- the multi-lamp type lighting device 50 uses a plurality of small light sources to shorten the arc length of each light source to extend the life and improve the efficiency of light collection. Projection can be continued even if (cut) occurs.
- each pair of convex lenses is composed of a pair of fly-eye lenses and irradiates light from the light source to the entire surface of the liquid crystal display panel. This is to average out the partial luminance unevenness existing in the reflected light to reduce the light amount difference between the center and the periphery of the screen.
- the first reflection surface 53a and the second reflection surface of the reflection mixing member 53 are provided.
- the ratio between the pitch W p of the triangular prism portion composed of 53 b and the lens pitch W f of the fly-eye lens 55 on the light incident side in the integrator lens is, for example, 1: 1, each lens portion of the fly-eye lens 55
- the luminous flux of the same pattern is incident on 55a, but the luminous flux of the same pattern is collected on the liquid crystal display panel 55, and the light incident on the liquid crystal panel has uneven brightness.
- projectors using three liquid crystal panels adopt a configuration in which only one of the three primary colors has a different optical path length in order to reduce the size of the color separation / synthesis system, and use a relay to optically match the optical path lengths.
- An optical system is used. For this reason, light enters the liquid crystal panel in a state where only one color is inverted up, down, left, and right with respect to the other two colors, and a difference occurs in luminance distribution from the other two colors. Due to the difference in luminance distribution for each color, the projected image on the screen Unevenness and color unevenness occur. To the human eye, color unevenness is more sensitive than luminance unevenness, and this color unevenness greatly degrades the display image quality. Disclosure of the invention
- the present invention has been made in view of the above circumstances, and has as its object to provide a light mixing member, a multi-light illumination device, and a projection-type image display device capable of performing illumination without causing luminance unevenness and color unevenness.
- a multi-lamp lighting device includes a first light source and a second light source that emit substantially parallel light, and a first light source that guides light emitted from the first light source in a specific direction.
- a light mixing member in which optical elements and second optical elements for guiding light emitted from the second light source in a direction parallel to the specific direction are alternately arranged; and a light mixing member is provided on a light emission side of the light mixing member.
- a fly-eye lens pair comprising: a luminous flux having a different light intensity distribution is incident on each lens portion of the fly-eye lens on the light incident side of the fly-eye lens pair. The arrangement of the first optical element and the second optical element is set as described above.
- the same pattern of light flux does not enter each lens portion of the fly-eye lens, so that it is possible to prevent the occurrence of uneven brightness in the light incident on the object to be illuminated, and at the same time, on the screen. It is possible to prevent the occurrence of color unevenness in the image of the image.
- the ratio of the pitch between the portions made of the first optical element and the second optical element to the lens pitch of the fly-eye lens may be set so as not to be 1 ⁇ 0.2. Further, a ratio of a pitch of a portion including the first optical element and the second optical element to a lens pitch of the fly-eye lens may be set to a range that does not become 1 / N (N is a natural number). Also, The pitch of the portion composed of the first optical element and the second optical element may be varied.
- a projection-type image display device of the present invention is a projection-type image display device for modulating and projecting light emitted from an illumination device by a light valve, wherein the multi-light illumination device described above is used as the illumination device. It is characterized by having.
- the light mixing member includes a first optical element for guiding light received from the first direction in a specific direction and a second optical element for guiding light received from the second direction in a direction parallel to the specific direction.
- a light mixing member having a shape in which optical elements are alternately arranged, wherein the light mixing member is divided into at least two regions with a line perpendicular to a joining line between the first optical element and the second optical element as a boundary; Wherein the joining lines are configured to be incompatible with each other.
- each optical part has a first optical element and a second optical element alternately arranged.
- the first optical element guides the incident light from the first direction in a specific direction
- the second optical element guides the incident light from the second direction in a direction parallel to the specific direction.
- You may comprise.
- a light mixing member having these configurations, a first light source provided in the first direction and emitting illumination light toward the first optical element, and an illumination light provided in the second direction and provided in the second direction. And a second light source that emits the light toward the second optical element.
- a projection type video display device of the present invention is a projection type video display device for modulating and projecting light emitted from a lighting device by a light valve, and comprising the multi-lamp lighting device as the lighting device. It is characterized in that a fly-eye lens pair is provided on the light emission side of the multi-lamp lighting device.
- the joining lines in each region are alternately arranged.
- the light is guided from the light mixing member to the incident surface of the fly-eye lens, for example, with different luminance uneven patterns in the upper region and the lower region. Therefore, the light beam pattern guided to the light valve by each fly-eye lens pair on the upper region is different from the light beam pattern guided to the light valve by each fly-eye lens pair on the lower region. Luminance unevenness on the re-projected image, which is easily offset, is reduced.
- an image of a region boundary line of the light mixing member is guided to a valley between lenses in the entrance-side lens group of the fly-eye lens pair. According to this, it is possible to prevent a dark line, which is an image of the region boundary line, from being guided to the light valve by each lens pair.
- FIG. 1 is an explanatory diagram showing an optical system of a multiple-light illumination device and a projection-type image display device according to a first embodiment of the present invention.
- Figure 2 shows the change of the color unevenness to the pitch ratio in reflective mixed c
- Figure 3 is an explanatory view illustrating the arrangement of the member and the light-incident side of the fly's eye lens is a multi-light type illumination device in the configuration of FIG. 1 It is a graph by a simulation.
- FIG. 4 is a view showing Embodiment 2 of the present invention.
- FIG. 4 (a) is a plan view of a reflection mixing section
- FIG. 4 (b) is a side view.
- FIG. 4 (a) is a plan view of a reflection mixing section
- FIG. 4 (b) is a side view.
- FIG. 5 is a diagram showing Embodiment 2 of the present invention, and is an explanatory diagram showing a luminance pattern on the incident-side fly-eye lens and a luminance pattern on the liquid crystal display panel.
- FIG. 6 is an explanatory diagram showing an arrangement relationship between the reflection mixing section and the fly-eye lens on the light incident side in the conventional configuration.
- FIG. 7 is a diagram showing a conventional example.
- FIG. 7 (a) is a plan view of a reflection mixing section
- FIG. 7 (b) is a side view thereof.
- FIG. 8 shows a conventional example.
- FIG. 4 is an explanatory diagram showing a luminance pattern on an incident side fly-eye lens and a luminance pattern on a liquid crystal display panel.
- FIG. 9 is an explanatory diagram showing a conventional multi-lamp lighting device.
- FIG. 1 is a schematic configuration diagram showing a multi-lamp lighting device and a projection type video display device according to an embodiment of the present invention.
- the multi-lamp type illumination device and the projection type video display device of this embodiment are basically the same as those disclosed in Japanese Patent Application Laid-Open No. 2002-92667, which is also disclosed in the related art. I have.
- the multi-light illumination device 1 includes a first light source 11, a second light source 12, a reflection mixing member 13, an integrator lens (a pair of fly-eye lenses) 14, a polarization converter 15, It comprises.
- the projection display apparatus 10 includes the multi-lamp lighting apparatus 1, condenser lenses 2, 3, and 4, a liquid crystal display panel 5, and a projection lens 6.
- the optical system is shown in a single-plate configuration for simplification of description, but in a so-called three-plate configuration, for example, a color separation optical system (such as a dichroic mirror) and a color mixing system are used. (Such as a cross-die Kroitsk prism).
- the light-emitting portions of the light sources 11 and 12 are composed of an ultra-high pressure mercury lamp, a metal halide lamp, a xenon lamp, and the like, and the irradiation light is emitted as substantially parallel light by a parabolic reflector.
- the reflection mixing member 13 has, for example, a large number of triangular prisms formed on the surface of the glass substrate, and deposits a metal having a high reflectance on the slopes of the triangular prisms. It has a structure of 3a and 13b. In FIG. 1, the optical axis of the reflected light and the normal O of the reflection mixing member 13 are shown in common.
- the optical axis of the light beam emitted from the light source 11 and the normal O are arranged so as to form a predetermined angle.
- the optical axis of the light beam emitted from the light source 12 and the normal O are arranged so as to form a predetermined angle ⁇ .
- the predetermined angle Of is an angle formed in a plane perpendicular to the reflecting surfaces 13a and 13b. Then, the light emitted from the first light source 11 is reflected by the reflecting surface 13 a and reflected in a direction parallel to the normal O.
- the light emitted from the second light source 12 is the reflecting surface 13 b
- the angles (vertical angles) of the inclined surfaces (reflecting surfaces 13a, 13b) in the triangular prism portion and the first light sources 11 and 2 The position (orientation) of light source 1 and 2 has been adjusted.
- the integrator lens 14 is disposed parallel to the reflection mixing member 13 (perpendicular to the normal line O).
- the integrator lens 14 has been described in the previous section, but each pair of convex lenses is composed of a pair of fly-eye lenses 14a and 14b, and the light from the light sources 11 and 12 is applied to the entire surface of the liquid crystal display panel 5. It is designed to irradiate, and averages out partial luminance unevenness in the light emitted from the light sources 11 and 12 to reduce the light amount difference between the center and the periphery of the screen.
- the polarization conversion device 15 is configured by a polarization beam splitter array (hereinafter, referred to as a PBS array).
- the PBS array includes a polarization separation film and a phase difference plate (1Z2A plate).
- Each polarization separation film of the PBS array passes, for example, P-polarized light of the light from the integrator lens 14 and changes the optical path of S-polarized light by 90 °.
- the S-polarized light whose optical path has been changed is reflected by the adjacent polarization separation film, converted into P-polarized light by the retardation plate provided on the front side (light emission side), and emitted.
- the P-polarized light transmitted through the polarization separation film is emitted as it is.
- FIG. 2 is an explanatory diagram showing an arrangement relationship between the reflection mixing member 13 and the fly-eye lens 14a on the light incident side.
- the pitch Wp of the triangular prism portion (the portion composed of the reflection surface 13a and the reflection surface 13b) in the reflection mixing member 13 is substantially the same as the lens pitch Wf of the fly-eye lens 14a. They are set so that they are not the same.
- Fig. 3 is a graph obtained by simulation, where the arc length of the lamp at the light sources 11 and 12 is 1.3 mm, and the ratio (pitch ratio) between the pitch Wp and the lens pitch Wf is plotted on the horizontal axis.
- the vertical axis indicates the degree of color unevenness ( ⁇ u 'V'), and the change in color unevenness with respect to the pitch ratio is shown.
- Wp / Wf 1
- the pitch ratio is expressed as 100%.
- the liquid crystal display panel 5 is divided into 9 vertical and horizontal 3 ⁇ 3 areas, and the average light amount of each area is calculated.
- the white color coordinates (u ', v';) at each point are derived from the average light amount, and the maximum value of the distance between the (LT, v ') coordinates among the nine points is defined as ⁇ u'v'.
- the existing single lamp lighting system using one light source here, the arc length is set to 1.3 mm
- the reason why the multi-lamp type lighting device exhibits the same low color unevenness as the existing single-lamp lighting device is that the pitch ratio is in a range other than 80% to 120%, that is, Wp / Since W f is outside the range of 1 ⁇ 0.2, it is better to set WP and W f so that Wp / Wf is outside the range of 1 ⁇ 0.2.
- Wp and Wf are set such that the denominator is a value other than a natural number, such as Wp / Wf ⁇ 1/2 or Wp / Wf ⁇ 1/3.
- the relationship between the pitch Wp and the lens pitch Wf is set so that light beams having different distributions are incident on the respective lens portions of the fly-eye lens 14a. Light from the same pattern is prevented from being incident on each lens part of a, and even in an ideal light source having an extremely short arc length, unevenness in the light incident on the liquid crystal display panel 5 is prevented from occurring. This can prevent color unevenness on the screen at the same time.
- the pitch Wp may be made partially different (the pitch Wp may be changed).
- a triangular prism reflection surface 1 in reflection mixing member 13
- the denominator may be a natural number.
- the relationship between the pitch Wp and the lens pitch Wf is set so that light beams having different distributions are incident on the respective lens portions of the fly-eye lens 14a. This prevents the same pattern of luminous flux from being incident on each lens portion of the fly-eye lens 14a, thereby preventing the light incident on the liquid crystal display panel 5 from having uneven brightness, and The above-mentioned color unevenness can be prevented.
- Embodiment 2 a light mixing member (reflection mixing member), a multi-lamp illumination device, and a projection type video display device according to Embodiment 2 of the present invention will be described with reference to FIGS. Note that the basic configurations of the multi-lamp lighting device and the projection type video display device are the same as those in Embodiment 1, and will be described with reference to FIG.
- the reflection mixing member 13 ' has a region A and a region B. In other words, it is divided into two regions A and B on the line perpendicular to the ridgeline of the triangular prism, and the two regions A and B are shifted from each other by a distance of 1/2 of the pitch between the ridgelines of the triangular prism.
- Each of the areas A and B has two reflective optical parts each having a size of a half of a required light receiving area (hereinafter, the reflective optical parts may be denoted by reference numerals A and B).
- the reflective mixing member 13 ' is a combination of these two reflective optical parts A and B.
- the reflective optical parts A and B have a large number of triangular prism portions formed on the surface of a glass substrate, and a metal having a high reflectivity is deposited on the slopes of the triangular prism portions. has the structure of 'a, 1 3' b You.
- the light emitted from the first light source 11 is reflected by the reflecting surface 13 ′ a and reflected in a direction parallel to the normal O, and the light emitted from the second light source 12 is reflected by the reflecting surface 13 ′ b
- Angles (vertical angles) of the inclined surfaces (reflection surfaces 13'a, 13'b) of the reflective optical parts A and B so that the light is reflected in a direction parallel to the normal 0 and the first angle.
- the positions (orientations) of the light sources 11 and 12 are adjusted.
- the reflection mixing member 13 ′ is divided into regions as described above, and the ridges (joining lines) of the triangular prism portions of the respective regions A and B do not coincide with each other.
- the reflection mixing member 13 ′ On the surface, as shown in FIG. 5, light is guided from the reflection mixing member 13 ′ with different luminance unevenness patterns in the upper region and the lower region. Therefore, the light beam pattern guided to the liquid crystal display panel 5 by each fly-eye lens pair on the upper region is different from the light beam pattern guided to the liquid crystal display panel 5 by each fly-eye lens pair on the lower region. Brightness unevenness on the re-projected image, which tends to cancel out unevenness in brightness, is reduced.
- each fly-eye lens has 10 ⁇ 12 lens cells, and the boundary between the upper region and the lower region is located between the valleys of the lens cells. That is, an image of the area boundary line of the reflection mixing member 13 ′ is guided to the valley between the lenses in the entrance-side lens group of the fly-eye lens pair. According to this, it is possible to prevent the dark line, which is the image of the area boundary line, from being guided to the liquid crystal display panel 5 by each lens pair.
- the reflection mixing member 13 ′ is formed by joining these two reflection type optical parts A and B while shifting them from each other, but by processing a single base (a glass base or the like). Regions A and B can be formed on the single base. However, the configuration in which the two reflective optical parts A and B are joined is easier to manufacture. Also, not only in two areas, but also in three or more areas It may be divided. In the case of three regions, they may be shifted from each other by a distance of 13 times the pitch between the ridge lines of the triangular prism.
- the transmissive liquid crystal display panel 5 is used in these embodiments, a reflective liquid crystal display panel may be used instead, or a micro mirror may be used instead of the liquid crystal display panel.
- Light modulators of the type individually driven may be used or used.
- the first and second light sources 11 and 12 are mixed by using the reflection mixing members 13 and 13 ′. For example, a transparent substrate having a large number of triangular prisms formed on the surface of a glass substrate is used. By using a member, both the first and second light sources 11 and 12 may be transmitted and refracted and mixed.
- the present invention it is possible to illuminate without causing luminance unevenness and color unevenness, and it is possible to perform high-quality image projection in a projection-type image display device.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/550,886 US7503660B2 (en) | 2003-03-28 | 2004-03-24 | Light mixing member, multiple-lamp lighting equipment and projection video display |
JP2005504183A JP4049789B2 (ja) | 2003-03-28 | 2004-03-24 | 多灯式照明装置及び投写型映像表示装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2003-090136 | 2003-03-28 | ||
JP2003090136 | 2003-03-28 | ||
JP2003324867 | 2003-09-17 | ||
JP2003-324867 | 2003-09-17 |
Publications (1)
Publication Number | Publication Date |
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WO2004088413A1 true WO2004088413A1 (ja) | 2004-10-14 |
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PCT/JP2004/004112 WO2004088413A1 (ja) | 2003-03-28 | 2004-03-24 | 光混合部材及び多灯式照明装置及び投写型映像表示装置 |
Country Status (3)
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US (1) | US7503660B2 (ja) |
JP (1) | JP4049789B2 (ja) |
WO (1) | WO2004088413A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1983763A2 (en) | 2007-04-19 | 2008-10-22 | Sanyo Electric Co. Ltd. | Illumination device and projection video display device |
JP2009009800A (ja) * | 2007-06-27 | 2009-01-15 | Sanyo Electric Co Ltd | 照明装置および投写型映像表示装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5421785B2 (ja) * | 2007-02-27 | 2014-02-19 | コーニンクレッカ フィリップス エヌ ヴェ | 照明システム及び表示装置 |
JP2008216840A (ja) * | 2007-03-07 | 2008-09-18 | Mitsubishi Electric Corp | 投写型表示装置 |
KR20100013842A (ko) * | 2008-08-01 | 2010-02-10 | 엘지전자 주식회사 | 프로젝션 시스템 |
USD884944S1 (en) | 2017-11-15 | 2020-05-19 | Energizer Brands, Llc | Lighting device |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6223022A (ja) * | 1985-07-23 | 1987-01-31 | Canon Inc | 照明装置 |
JPH0915595A (ja) * | 1995-06-30 | 1997-01-17 | Fujitsu Kasei Kk | バックライトユニット |
JPH10170916A (ja) * | 1996-12-12 | 1998-06-26 | Hitachi Ltd | 照明装置およびそれを用いた液晶表示装置 |
JPH1139913A (ja) * | 1997-07-25 | 1999-02-12 | Matsushita Electric Works Ltd | 照明装置 |
JPH11271668A (ja) * | 1998-03-20 | 1999-10-08 | Matsushita Electric Ind Co Ltd | 照明光学装置および投写型表示装置 |
JP2001021996A (ja) * | 1999-07-06 | 2001-01-26 | Sanyo Electric Co Ltd | 照明装置および投写型映像表示装置 |
US6183093B1 (en) * | 1997-09-12 | 2001-02-06 | Minolta Co., Ltd. | Light source device and an illuminator and an image projector |
EP1107611A2 (en) * | 1999-12-08 | 2001-06-13 | Sharp Kabushiki Kaisha | Projection type display |
JP2001166378A (ja) * | 1999-12-10 | 2001-06-22 | Sharp Corp | 液晶プロジェクタ |
JP2001201719A (ja) * | 2000-01-19 | 2001-07-27 | Nagano Kogaku Kenkyusho:Kk | 光源ランプおよび光源装置 |
JP2001215619A (ja) * | 2000-02-04 | 2001-08-10 | Chinontec Kk | 光源装置及びプロジェクタ装置 |
JP2001268588A (ja) * | 2000-03-22 | 2001-09-28 | Matsushita Electric Ind Co Ltd | 照明装置および投写型表示装置 |
JP2002352611A (ja) * | 2001-05-24 | 2002-12-06 | Sharp Corp | 照明装置およびそれを備える表示装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4394717A (en) * | 1981-02-02 | 1983-07-19 | Ciba-Geigy Ag | Illumination system for copying apparatus |
JPH06308485A (ja) | 1993-04-21 | 1994-11-04 | Hitachi Ltd | 表示装置 |
DE19935404A1 (de) * | 1999-07-30 | 2001-02-01 | Zeiss Carl Fa | Beleuchtungssystem mit mehreren Lichtquellen |
JP2000171901A (ja) * | 1998-09-28 | 2000-06-23 | Matsushita Electric Ind Co Ltd | 照明光学装置および投写型表示装置 |
US6585380B2 (en) * | 2000-07-19 | 2003-07-01 | Fuji Photo Optical Co., Ltd. | Illumination apparatus and projector type display apparatus using the same |
JP2002296679A (ja) | 2001-03-29 | 2002-10-09 | Sanyo Electric Co Ltd | プロジェクタ装置 |
JP4614789B2 (ja) * | 2004-03-29 | 2011-01-19 | 三洋電機株式会社 | 光学部材及び照明装置及び投写型映像表示装置 |
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2004
- 2004-03-24 WO PCT/JP2004/004112 patent/WO2004088413A1/ja active Application Filing
- 2004-03-24 US US10/550,886 patent/US7503660B2/en not_active Expired - Fee Related
- 2004-03-24 JP JP2005504183A patent/JP4049789B2/ja not_active Expired - Fee Related
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6223022A (ja) * | 1985-07-23 | 1987-01-31 | Canon Inc | 照明装置 |
JPH0915595A (ja) * | 1995-06-30 | 1997-01-17 | Fujitsu Kasei Kk | バックライトユニット |
JPH10170916A (ja) * | 1996-12-12 | 1998-06-26 | Hitachi Ltd | 照明装置およびそれを用いた液晶表示装置 |
JPH1139913A (ja) * | 1997-07-25 | 1999-02-12 | Matsushita Electric Works Ltd | 照明装置 |
US6183093B1 (en) * | 1997-09-12 | 2001-02-06 | Minolta Co., Ltd. | Light source device and an illuminator and an image projector |
JPH11271668A (ja) * | 1998-03-20 | 1999-10-08 | Matsushita Electric Ind Co Ltd | 照明光学装置および投写型表示装置 |
JP2001021996A (ja) * | 1999-07-06 | 2001-01-26 | Sanyo Electric Co Ltd | 照明装置および投写型映像表示装置 |
EP1107611A2 (en) * | 1999-12-08 | 2001-06-13 | Sharp Kabushiki Kaisha | Projection type display |
JP2001166378A (ja) * | 1999-12-10 | 2001-06-22 | Sharp Corp | 液晶プロジェクタ |
JP2001201719A (ja) * | 2000-01-19 | 2001-07-27 | Nagano Kogaku Kenkyusho:Kk | 光源ランプおよび光源装置 |
JP2001215619A (ja) * | 2000-02-04 | 2001-08-10 | Chinontec Kk | 光源装置及びプロジェクタ装置 |
JP2001268588A (ja) * | 2000-03-22 | 2001-09-28 | Matsushita Electric Ind Co Ltd | 照明装置および投写型表示装置 |
JP2002352611A (ja) * | 2001-05-24 | 2002-12-06 | Sharp Corp | 照明装置およびそれを備える表示装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1983763A2 (en) | 2007-04-19 | 2008-10-22 | Sanyo Electric Co. Ltd. | Illumination device and projection video display device |
JP2009009800A (ja) * | 2007-06-27 | 2009-01-15 | Sanyo Electric Co Ltd | 照明装置および投写型映像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004088413A1 (ja) | 2006-07-06 |
US20060050510A1 (en) | 2006-03-09 |
US7503660B2 (en) | 2009-03-17 |
JP4049789B2 (ja) | 2008-02-20 |
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