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1. 发明授权

US09846354B2 Projection video display device with raisable/lowerable mirror 有权
公开(公告)号：US09846354B2
公开(公告)日：2017-12-19
申请号：US14913986
申请日：2013-09-13
申请人： Hitachi Maxell, Ltd.
发明人： Kosuke Matoba , Atsushi Ishibashi , Toshiyuki Moriya , Takafumi Ishizu , Kazuomi Kaneko , Koji Hirata
IPC分类号： G03B21/14 , G03B21/28 , G03B21/30 , H04N9/31
CPC分类号： G03B21/28 , G03B21/145 , G03B21/30 , H04N9/3173
摘要： A projection video display device, which enlarges and projects an image from an image-displaying means, has a housing and a raisable/lowerable mirror and a power supply, a light source, and a lens unit inside the housing. The raisable/lowerable mirror covers a projection-light opening formed in the top surface of the housing and able to rotate with respect to the housing, and has a convex mirror on the inside surface thereof. The raisable/lowerable mirror covering the top surface of the housing forms a smoothly connected, smooth, convexly curved surface with no height difference between the edge of the raisable/lowerable mirror and the front edge of the opening, and a half-bowl-shaped concavity is formed on at least one side of the raisable/lowerable mirror in the direction of the axis of rotation thereof.

2. 发明授权

US09544555B2 Projection-type video-image-displaying device 有权
标题翻译：投影型视频图像显示装置
公开(公告)号：US09544555B2
公开(公告)日：2017-01-10
申请号：US14646335
申请日：2013-11-18
申请人： HITACHI MAXELL, LTD.
发明人： Koji Hirata , Nobuyuki Kimura , Yuriko Inadachi
IPC分类号： G03B21/14 , H04N9/31 , G02B26/00 , G02B27/12 , G03B21/00 , G03B21/20 , G03B33/08 , G02B27/10 , G02B19/00
CPC分类号： H04N9/3114 , G02B19/0019 , G02B19/0047 , G02B26/008 , G02B27/1033 , G02B27/126 , G03B21/008 , G03B21/208 , G03B33/08 , H04N9/3152 , H04N9/3182
摘要： A projection-type video-image-displaying device efficiently displays an image by reducing the loss of light in the device. The device is provided with a light source radiating white light, a rod lens, a rotary color filter, a DMD, illumination optical elements, a projection lens and a control device. The rod lens collects light from the light source and emits the light. The rotary color filter selectively transmits, from the white light, light of a specific color. The DMD modulates incident light in accordance with an image signal, and the illumination optical elements form illumination light for projection onto the DMD. The projection lens projects an image formed using the DMD. The control device synchronizes the rotary color filter with the image displayed by the DMD. The DMD is disposed in a substantially conjugate relationship with the light-emitting surface on the rotary color filter.
摘要翻译：投影型视频图像显示装置通过减少装置中的光的损失来有效地显示图像。该装置设置有发出白光的光源，棒状透镜，旋转滤色器，DMD，照明光学元件，投影透镜和控制装置。棒状透镜从光源收集光并发射光。旋转滤色器选择性地从白光透射特定颜色的光。 DMD根据图像信号调制入射光，并且照明光学元件形成用于投影到DMD上的照明光。投影透镜投影使用DMD形成的图像。控制装置将旋转彩色滤光片与DMD显示的图像同步。 DMD与旋转滤色器上的发光表面基本上共轭的关系。

3. 发明授权

US09348210B2 Projection apparatus and transparent screen for it 有权
标题翻译：投影仪和透明屏幕
公开(公告)号：US09348210B2
公开(公告)日：2016-05-24
申请号：US14065669
申请日：2013-10-29
申请人： Hitachi Maxell, Ltd.
发明人： Koji Hirata , Masahiko Yatsu , Hidehiro Ikeda
IPC分类号： G03B21/26 , G03B21/62 , G02B13/18 , H04N7/14 , G03B21/10
CPC分类号： G03B21/62 , G02B13/18 , G03B21/10 , H04N7/142
摘要： There is provided a projection apparatus using an oblique projection optical system, which generates little reflection loss by providing a linear Fresnel lens at an incident surface in the case where the apparatus is used as a linear system, wherein said linear Fresnel lens makes total reflection of image light, and is capable of obtaining total surface property with good brightness in a region with small incident angle onto a screen, by using a total reflection Fresnel lens and a refraction Fresnel lens in combination. In addition, total surface property with further good brightness can be obtained by using a plurality of projection image display apparatuses in the same projection apparatus.
摘要翻译：提供了一种使用倾斜投影光学系统的投影装置，其在将该装置用作线性系统的情况下在入射表面处设置线性菲涅耳透镜而产生很小的反射损失，其中所述线性菲涅耳透镜全部反射并且通过组合使用全反射菲涅耳透镜和折射菲涅尔透镜，能够在具有小的入射角的区域中以良好的亮度获得在屏幕上的总表面性质。此外，通过在同一投影装置中使用多个投影图像显示装置，可以获得更高亮度的总表面性质。

4. 发明申请

US20150296190A1 PROJECTION-TYPE VIDEO-IMAGE-DISPLAYING DEVICE 有权
标题翻译：投影类型视频图像显示装置
公开(公告)号：US20150296190A1
公开(公告)日：2015-10-15
申请号：US14646335
申请日：2013-11-18
申请人： HITACHI MAXELL, LTD.
发明人： Koji Hirata , Nobuyuki Kimura , Yuriko Inadachi
IPC分类号： H04N9/31 , G02B19/00 , G02B26/00
CPC分类号： H04N9/3114 , G02B19/0019 , G02B19/0047 , G02B26/008 , G02B27/1033 , G02B27/126 , G03B21/008 , G03B21/208 , G03B33/08 , H04N9/3152 , H04N9/3182
摘要： A projection-type video-image-displaying device efficiently displays an image by reducing the loss of light in the device. The device is provided with a light source radiating white light, a rod lens, a rotary color filter, a DMD, illumination optical elements, a projection lens and a control device. The rod lens collects light from the light source and emits the light. The rotary color filter selectively transmits, from the white light, light of a specific color. The DMD modulates incident light in accordance with an image signal, and the illumination optical elements form illumination light for projection onto the DMD. The projection lens projects an image formed using the DMD. The control device synchronizes the rotary color filter with the image displayed by the DMD. The DMD is disposed in a substantially conjugate relationship with the light-emitting surface on the rotary color filter.
摘要翻译：投影型视频图像显示装置通过减少装置中的光的损失来有效地显示图像。该装置设置有发出白光的光源，棒状透镜，旋转滤色器，DMD，照明光学元件，投影透镜和控制装置。棒状透镜从光源收集光并发射光。旋转滤色器选择性地从白光透射特定颜色的光。 DMD根据图像信号调制入射光，并且照明光学元件形成用于投影到DMD上的照明光。投影透镜投影使用DMD形成的图像。控制装置将旋转彩色滤光片与DMD显示的图像同步。 DMD与旋转滤色器上的发光表面基本上共轭的关系。

5. 发明授权

US09857669B2 Projection type image display device with symmetrically arranged light source and power supply 有权
公开(公告)号：US09857669B2
公开(公告)日：2018-01-02
申请号：US14392198
申请日：2013-06-28
申请人： Hitachi Maxell, Ltd.
发明人： Koji Hirata , Takafumi Ishizu , Takatsugu Kawabata
IPC分类号： G03B21/14 , G03B21/16 , G03B21/20 , G03B21/28 , G03B21/10
CPC分类号： G03B21/145 , G03B21/10 , G03B21/16 , G03B21/2033 , G03B21/206 , G03B21/28
摘要： A projection type image display device to be used with a mobile terminal has a housing with an upper side case having a reflective mirror attached thereto and an openable mirror cover formed thereon and a lower side case having a plurality of air exhausting openings provided on a side wall surface thereof. A light source is provided for shining image light that has been magnified and projected onto the reflective mirror; and an image is magnified and projected on the basis of the light from the light source. An optical system is disposed within the lower side case parallel to the bottom surface of the case along a central axis of the device, and also an image processing unit, which includes the light source, and a power supply unit are disposed within the lower case symmetrically with the optical system as the center.

6. 发明授权

US09942529B2 Image projection device 有权
公开(公告)号：US09942529B2
公开(公告)日：2018-04-10
申请号：US14892700
申请日：2013-09-27
申请人： HITACHI MAXELL, LTD.
发明人： Shoji Yamamoto , Yoshiho Seo , Koji Hirata , Hiroyuki Urata , Takashi Matsubara
IPC分类号： H04N9/31 , H04N9/12 , G09G5/00 , G09G5/36 , G06F3/01 , G03B17/54
CPC分类号： H04N9/3179 , G03B17/54 , G06F3/017 , G09G5/00 , G09G5/36 , H04N9/3194
摘要： Provided is an image projection device that carries out high precision gesture detection. An image projection device has a projection unit that optically projects image and a gesture detection unit that detects human gestures and generates a signal for operating the projected image on the basis of the detection results. The gesture detection unit controls a range for detecting gesture according to the direction that the projection unit projects light and/or the placement state of the image projection device. The device has a laser light source and photodiode for detecting gestures, or has a pyroelectric sensor for detecting infrared rays.

7. 发明授权

US09256060B2 Pinhole array and display device using same 有权
标题翻译：针孔阵列和显示装置使用相同
公开(公告)号：US09256060B2
公开(公告)日：2016-02-09
申请号：US14406139
申请日：2013-02-22
申请人： HITACHI MAXELL, LTD.
发明人： Tomoki Kobori , Yoshiho Seo , Koji Hirata , Hidehiro Ikeda , Satoshi Ouchi
IPC分类号： G02B5/126 , G02B17/00 , G02B17/06 , G02B17/08 , G02B27/22
CPC分类号： G02B17/002 , G02B17/008 , G02B17/061 , G02B17/0808 , G02B27/2292
摘要： Two pieces of elliptic semi-sphere surfaces, each forming a pinhole at the zenith thereof and also forming a reflection mirror on an inside thereof are stuck onto each other, with facing the interior surfaces thereof, respectively. A light ray entering therein from one of the pinholes, after being reflected between the elliptic semi-sphere surfaces facing to each other, emits from the pinhole on opposite side at an angle plane symmetric to the incident angle. Disposing the elliptic semi-sphere surfaces facing to each other, aligning on a plane, by plural numbers thereof, there is built up a pinhole array. Plural numbers of light rays reflecting on and/or emitting from a display object, which is disposed on one side of the pinhole array, after passing through the plural numbers of pinholes of the pinhole array, form an image at a position plane symmetric thereto, on the opposite side of the pinhole array.
摘要翻译：分别在其顶部形成针孔并且在其内部形成反射镜的两片椭圆形半球面分别贴在彼此的内表面上。从一个针孔入射到其中的光线在彼此面对的椭圆形半球面之间被反射之后，以与入射角对称的角度平面的相对侧的针孔发射。将椭圆形半球面相对配置，在平面上对准多个数目，构成针孔阵列。在穿过针孔阵列的多个针孔之后，设置在针孔阵列的一侧上的和/或从显示对象发射的多个光线在与其对准的位置平面处形成图像，在针孔阵列的相对侧。

8. 发明授权

US09069237B2 Projection type display apparatus having a light source and display element configured to provide increased lifespan of optical constituent components 有权
标题翻译：具有光源和显示元件的投射型显示装置被配置为提供光学构成部件的寿命增加
公开(公告)号：US09069237B2
公开(公告)日：2015-06-30
申请号：US14176209
申请日：2014-02-10
申请人： HITACHI MAXELL, LTD.
发明人： Koji Hirata , Nobuyuki Kimura
IPC分类号： G03B21/26 , G03B21/14 , G03B21/20
CPC分类号： G03B21/2073 , G03B21/14
摘要： A projection type display apparatus including a light source, a display element, an illumination optical system and a projection lens to project a magnified image of the optical image. The illumination optical system includes a first array lens and a second array lens, each includes a plurality of lens elements arranged in a matrix, each of the lens elements having a rectangular opening, and a polarization conversion element having polarization conversion function by use of a plurality of polarized beam splitters and a plurality of half-wave phase plates, arranged in an array and opposing to the lens elements of the second array lens, to emit predetermined polarized light. The light source includes a light emitting plane of a rectangle or an ellipse shape, a longitudinal direction of the light emitting plane being parallel to a longitudinal direction of each opening of the polarization conversion element.
摘要翻译：一种投影型显示装置，包括光源，显示元件，照明光学系统和投影透镜，以投射光学图像的放大图像。照明光学系统包括第一阵列透镜和第二阵列透镜，每个透镜元件包括以矩阵形式布置的多个透镜元件，每个透镜元件具有矩形开口，以及具有偏振转换功能的偏振转换元件，多个偏振分束器和多个半波相位板，排列成与第二阵列透镜的透镜元件相对的阵列并发射预定的偏振光。光源包括矩形或椭圆形的发光平面，发光平面的纵向方向平行于偏振转换元件的每个开口的纵向方向。

9. 发明申请

US20150153551A1 PINHOLE ARRAY AND DISPLAY DEVICE USING SAME 有权
标题翻译： PINHOLE阵列和显示设备使用相同
公开(公告)号：US20150153551A1
公开(公告)日：2015-06-04
申请号：US14406139
申请日：2013-02-22
申请人： HITACHI MAXELL, LTD.
发明人： Tomoki Kobori , Yoshiho Seo , Koji Hirata , Hidehiro Ikeda , Satoshi Ouchi
IPC分类号： G02B17/00 , G02B27/22
CPC分类号： G02B17/002 , G02B17/008 , G02B17/061 , G02B17/0808 , G02B27/2292
摘要： Two pieces of elliptic semi-sphere surfaces, each forming a pinhole at the zenith thereof and also forming a reflection mirror on an inside thereof are stuck onto each other, with facing the interior surfaces thereof, respectively. A light ray entering therein from one of the pinholes, after being reflected between the elliptic semi-sphere surfaces facing to each other, emits from the pinhole on opposite side at an angle plane symmetric to the incident angle. Disposing the elliptic semi-sphere surfaces facing to each other, aligning on a plane, by plural numbers thereof, there is built up a pinhole array. Plural numbers of light rays reflecting on and/or emitting from a display object, which is disposed on one side of the pinhole array, after passing through the plural numbers of pinholes of the pinhole array, form an image at a position plane symmetric thereto, on the opposite side of the pinhole array.
摘要翻译：分别在其顶部形成针孔并且在其内部形成反射镜的两片椭圆形半球面分别贴在彼此的内表面上。从一个针孔入射到其中的光线在彼此面对的椭圆形半球面之间被反射之后，以与入射角对称的角度平面的相对侧的针孔发射。将椭圆形半球面相对配置，在平面上对准多个数目，构成针孔阵列。在穿过针孔阵列的多个针孔之后，设置在针孔阵列的一侧上的和/或从显示对象发射的多个光线在与其对准的位置平面处形成图像，在针孔阵列的相对侧。

10. 发明授权

US10054280B2 Solid state light source device, automotive lighting using same, image display device, and drive method for solid state light source device 有权
公开(公告)号：US10054280B2
公开(公告)日：2018-08-21
申请号：US15035311
申请日：2013-11-18
申请人： HITACHI MAXELL, LTD.
发明人： Koji Hirata , Yuki Nagano , Shoji Yamamoto , Yoshiho Seo
IPC分类号： F21V3/00 , F21V5/00 , F21S8/10 , F21S41/143 , F21S41/147 , F21S41/25 , F21S41/275 , F21S41/27 , F21S41/36 , H01L25/075
CPC分类号： F21S41/25 , F21S41/143 , F21S41/147 , F21S41/16 , F21S41/27 , F21S41/275 , F21S41/36 , F21S41/365 , H01L25/0753 , H01L2924/0002 , H01L2924/00
摘要： A solid state light source device includes N (an integer of two or more) sets of solid state light source assemblies having a plurality of solid state light source cells arranged in a matrix pattern a multiple lens block including N incidence faces facing the N sets of solid state light source assemblies and causing light emitted from the solid state light source cells to be incident through multiple lens cells of a matrix pattern and one emission face composing the light incident from the N incidence faces and a dichroic filter that is obliquely arranged on the incidence faces inside the multiple lens block and selectively reflects or transmits incident light based on the incident light wavelength. Light distribution characteristics and color temperature of light exiting the emission face of the multiple lens block are controlled by a ratio of power supplied to the solid state light source cells.

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