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    • 12. 发明授权
    • Fresnel lens sheet, transmission type screen and rear projection type display apparatus
    • 菲涅耳透镜片,透射型屏幕和背投型显示装置
    • US07535637B2
    • 2009-05-19
    • US11262768
    • 2005-11-01
    • Yasufumi OgawaTakaaki IwakiHiroaki Uchino
    • Yasufumi OgawaTakaaki IwakiHiroaki Uchino
    • G03B21/60G03B21/56
    • G03B21/10G02B3/08G02B5/045G02B27/0955G02B27/0972G03B21/625
    • A rear projection type display apparatus is disclosed wherein image light reflected upon entrance thereof into a Fresnel lens sheet of the reflection type provided on a transmission type screen is suppressed from making stray light. A Fresnel lens sheet for converting incident light incoming at an incident angle within a predetermined angular range into parallel light includes a plurality of prisms arrayed on the light entrance face of a substrate. Each prism has a refracting face for refracting the incident light and a reflecting face for reflecting the refracted light from the refracting face toward the emergence face of the substrate. At least some of the prisms are configured such that the angle of a perpendicular to the refracting face with respect to a perpendicular to the emergence face is smaller than the incident angle at the position of the prism.
    • 公开了一种背投型显示装置,其中抑制了在透射型屏幕上设置的反射型菲涅耳透镜片中入射的图像光,从而形成杂散光。 用于将以预定角度范围内的入射角入射的入射光转换为平行光的菲涅尔透镜片包括排列在基板的光入射面上的多个棱镜。 每个棱镜具有用于折射入射光的折射面和用于将来自折射面的折射光朝向基板的出射面反射的反射面。 至少一些棱镜被配置为使得垂直于折射面的垂直于出射面的垂直线的角度小于棱镜位置处的入射角。
    • 14. 发明申请
    • Rear projection display apparatus and transmission type screen
    • 背投显示装置和传输型屏幕
    • US20070216875A1
    • 2007-09-20
    • US11714111
    • 2007-03-06
    • Hiroaki UchinoTakaaki IwakiYasufumi Ogawa
    • Hiroaki UchinoTakaaki IwakiYasufumi Ogawa
    • G03B21/14
    • G03B21/56
    • A rear projection display apparatus includes a transmission type screen and a video projector. The transmission type screen is installed on the front face of an apparatus main body. The video projector is disposed inside the apparatus main body and projecting video on the transmission type screen from the rear side. The transmission type screen includes a quadrangular lens sheet and is configured such that a plurality of pull portions provided along horizontal and longitudinal sides of the lens sheet are pulled upward and downward, and leftward and rightward, respectively, by a pulling device provided to extend along the circumference of the lens sheet and the number of the pull portions on the horizontal sides of the lens sheet and the number of the pull portions on the vertical sides of the lens sheet are set so as to correspond to a ratio of a horizontal side length to a vertical side length of the lens sheet.
    • 背投显示装置包括透射型屏幕和视频投影仪。 透射型屏幕安装在设备主体的正面上。 视频投影仪设置在设备主体内部,并且从后侧将视频投影在传输类型屏幕上。 透射型屏幕包括四边形透镜片,并且被构造成使得沿透镜片的水平和纵向侧设置的多个拉动部分分别通过设置成沿着延伸的拉动装置向上和向下以及向左和向右 透镜片的周长和透镜片的水平侧上的拉伸部的数量以及透镜片的垂直侧的拉伸部的数量被设定为与水平侧长度 到透镜片的垂直侧长度。
    • 15. 发明申请
    • Transmissive screen and rear projection display apparatus
    • 透射式屏幕和背投显示装置
    • US20070121208A1
    • 2007-05-31
    • US11583242
    • 2006-10-18
    • Yasufumi OgawaTakaaki IwakiHiroaki UchinoMinoru Makida
    • Yasufumi OgawaTakaaki IwakiHiroaki UchinoMinoru Makida
    • G03B21/60
    • H04N5/7408G02B3/08G02B5/02G03B21/62G03B21/625
    • A transmissive screen includes a first board member on a light source side, the first board member including a Fresnel lens on the surface of the light source side and one of a vertical lenticular lens or a horizontal lenticular lens on the surface of a viewer side; and a second board member on the viewer side, the second board member including the other of the vertical lenticular lens or the horizontal lenticular lens. The first board member includes a diffusing layer between the Fresnel lens and the lenticular lens on the surface of the viewer side at a position close to the Fresnel lens, wherein a relation represented by θ≧tan−1(fp/2L) is obtained, where θ is a diffusion angle at which a distribution characteristic of diffused light passing through the diffusing layer is half the peak gain, fp is a pitch of the Fresnel lens and L is a light path between the diffusing layer and the lenticular lens on the surface of the viewer side.
    • 透射屏幕包括在光源侧的第一板构件,第一板构件在光源侧的表面上包括菲涅尔透镜,并且在观察者侧的表面上包括垂直双凸透镜或水平双凸透镜中的一个; 以及在观察者侧的第二板构件,第二板构件包括垂直双凸透镜或水平双凸透镜中的另一个。 第一板构件包括在接近菲涅尔透镜的位置处的观察者侧表面上的菲涅耳透镜和双凸透镜之间的漫射层,其中由θ=tanθ-1表示的关系, (fp / 2L),其中θ是通过漫射层的漫射光的分布特性是峰值增益的一半的扩散角,fp是菲涅尔透镜的间距,L是漫射 层和观察者侧表面上的双凸透镜。
    • 16. 发明授权
    • Transmissive screen and rear projection display apparatus
    • 透射式屏幕和背投显示装置
    • US07525728B2
    • 2009-04-28
    • US11583242
    • 2006-10-18
    • Yasufumi OgawaTakaaki IwakiHiroaki UchinoMinoru Makida
    • Yasufumi OgawaTakaaki IwakiHiroaki UchinoMinoru Makida
    • G03B21/60G03B21/56
    • H04N5/7408G02B3/08G02B5/02G03B21/62G03B21/625
    • A transmissive screen includes a first board member on a light source side, the first board member including a Fresnel lens on the surface of the light source side and one of a vertical lenticular lens or a horizontal lenticular lens on the surface of a viewer side; and a second board member on the viewer side, the second board member including the other of the vertical lenticular lens or the horizontal lenticular lens. The first board member includes a diffusing layer between the Fresnel lens and the lenticular lens on the surface of the viewer side at a position close to the Fresnel lens, wherein a relation represented by θ≧tan−1(fp/2L) is obtained, where θ is a diffusion angle at which a distribution characteristic of diffused light passing through the diffusing layer is half the peak gain, fp is a pitch of the Fresnel lens and L is a light path between the diffusing layer and the lenticular lens on the surface of the viewer side.
    • 透射屏幕包括在光源侧的第一板构件,第一板构件在光源侧的表面上包括菲涅尔透镜,并且在观察者侧的表面上包括垂直双凸透镜或水平双凸透镜中的一个; 以及在观察者侧的第二板构件,第二板构件包括垂直双凸透镜或水平双凸透镜中的另一个。 第一板构件在靠近菲涅尔透镜的位置处包括在菲涅耳透镜和观察者侧表面上的双凸透镜之间的漫射层,其中获得由θ> tan-1(fp / 2L)表示的关系 其中theta是通过漫射层的漫射光的分布特性的峰值增益的一半的扩散角,fp是菲涅耳透镜的间距,L是漫射层和双凸透镜之间的光路 观察者侧的表面。
    • 18. 发明申请
    • Rear projection display apparatus and transmission type screen
    • 背投显示装置和传输型屏幕
    • US20070236791A1
    • 2007-10-11
    • US11730953
    • 2007-04-05
    • Minoru MakidaTakaaki IwakiYasufumi Ogawa
    • Minoru MakidaTakaaki IwakiYasufumi Ogawa
    • G03B21/60
    • G03B21/625B29D11/00269G03B21/10
    • Disclosed herein is a rear projection display apparatus, including: an apparatus body; a transmission type screen disposed on the front face of the apparatus body; and an image projection apparatus disposed in the inside of the apparatus body and configured to project an image to the transmission type screen from the rear side of the transmission type screen. In the apparatus, the transmission type screen having a three-element configuration including a horizontal lenticular screen, a vertical lenticular screen and a Fresnel screen or a two-element configuration including a horizontal lenticular screen or a fly-eye screen and a Fresnel screen; the Fresnel screen including a substrate made of a glass material and one or a plurality of ones of a lens, an antiglare layer and an internal diffusion layer formed directly on the substrate but provided not by lamination.
    • 这里公开了一种背投显示装置,包括:装置主体; 设置在所述装置主体的前表面上的透射型屏幕; 以及设置在设备主体的内部并被配置为从传输类型屏幕的后侧将图像投影到传输类型屏幕的图像投影设备。 在该装置中,具有包括水平双凸透镜屏幕,垂直双凸透镜屏幕和菲涅尔屏幕或包括水平双凸透镜屏幕或飞眼屏幕和菲涅尔屏幕的双元件配置的三元件配置的透射型屏幕; 菲涅耳屏幕包括由玻璃材料制成的基板和直接形成在基板上而不是通过层叠形成的透镜,防眩层和内部扩散层中的一个或多个。
    • 19. 发明申请
    • Rear projection display device and transmission screen
    • 背投显示装置和传输屏
    • US20070222951A1
    • 2007-09-27
    • US11724157
    • 2007-03-15
    • Minoru MakidaTakaaki Iwaki
    • Minoru MakidaTakaaki Iwaki
    • G03B21/14
    • G03B21/625H04N9/3141
    • A rear projection display device includes: a housing; a transmission screen provided on the front surface of the housing; and a video projector installed in the housing configured to project a video image to the transmission screen from the rear side. The transmission screen includes a frame, a quadrilateral lens sheet mounted to the frame, a rod-shaped pressure member arranged along at least one of the two opposite sides of the lens sheet, and an elastic section configured to apply a pressure to the pressure member to press the pressure member on the sheet surface, providing a tension. The lens sheet includes a main sheet to which the video image is projected, and a subsheet continuously joined to an end portion of the main sheet, the subsheet having a flexural rigidity smaller than that of the main sheet, the pressure member being pressed on the sheet surface.
    • 背投显示装置包括:壳体; 设置在所述壳体的前表面上的传输屏幕; 以及安装在所述壳体中的视频投影仪,被配置为从后侧将视频图像投影到所述传输屏幕。 透镜屏幕包括框架,安装在框架上的四边形透镜片,沿着透镜片的两个相对侧中的至少一个布置的杆状压力构件,以及弹性部分,构造成向压力构件施加压力 按压片材表面上的压力构件,提供张力。 透镜片包括投影视频图像的主片和连续接合到主片的端部的子片,该片具有比主片的弯曲刚度小的弯曲刚度,压片被压在主片上 片材表面。