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    • 1. 发明申请
    • SCREEN AND PROJECTION SYSTEM
    • 屏幕和投影系统
    • US20130170028A1
    • 2013-07-04
    • US13620064
    • 2012-09-14
    • Osamu ArakawaHiroyuki ShindoToshiaki HashizumeTatsuo UchidaYoshito SuzukiBaku Katagiri
    • Osamu ArakawaHiroyuki ShindoToshiaki HashizumeTatsuo UchidaYoshito SuzukiBaku Katagiri
    • G03B21/60
    • G03B21/60G03B21/28
    • A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance can be adjusted to be short.
    • 可以在保持图像亮度的同时调整观察距离的屏幕和使用屏幕的投影系统。 在屏幕的光控制层中,确定反射光的扩散分布的第一角度区域根据执行光漫射控制的控制方向上的屏幕位置而不同。 因此,根据屏幕位置,从屏幕表面发射的图像光的扩散分布被调整为向上倾斜向下并且向下倾斜。 因此,例如,扩散角范围的大小保持为30°,并且图像光被扩散发射的方向对应于观察者的假定位置。 可以在保持图像的亮度的同时观察投影图像,并且可以将观察距离调整为短。
    • 2. 发明授权
    • Screen and projection system
    • 屏幕投影系统
    • US08780444B2
    • 2014-07-15
    • US13620064
    • 2012-09-14
    • Osamu ArakawaHiroyuki ShindoToshiaki HashizumeTatsuo UchidaYoshito SuzukiBaku Katagiri
    • Osamu ArakawaHiroyuki ShindoToshiaki HashizumeTatsuo UchidaYoshito SuzukiBaku Katagiri
    • G03B21/56
    • G03B21/60G03B21/28
    • A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance L can be adjusted to be short.
    • 可以在保持图像亮度的同时调整观察距离的屏幕和使用屏幕的投影系统。 在屏幕的光控制层中,确定反射光的扩散分布的第一角度区域根据执行光漫射控制的控制方向上的屏幕位置而不同。 因此,根据屏幕位置,从屏幕表面发射的图像光的扩散分布被调整为向上倾斜向下并且向下倾斜。 因此,例如,扩散角范围的大小保持为30°,并且图像光被扩散发射的方向对应于观察者的假定位置。 可以在保持图像的亮度的同时观察投影图像,并且可以将观察距离L调整为较短。
    • 3. 发明授权
    • Refelctive front screen
    • 反光屏幕
    • US08654442B2
    • 2014-02-18
    • US13450051
    • 2012-04-18
    • Tatsuo UchidaYoshito SuzukiBaku KatagiriToshiaki HashizumeHiroyuki ShindoOsamu Arakawa
    • Tatsuo UchidaYoshito SuzukiBaku KatagiriToshiaki HashizumeHiroyuki ShindoOsamu Arakawa
    • G03B21/60
    • G03B21/60G03B21/602
    • A screen which reflects light emitted from a projector includes a light diffusion layer through which light incident from a specific angular region is diffused and transmitted and through which light incident from the other angular region is transmitted straight; area pairs having a mirror forming area and a non-mirror forming area; a light transmissive layer having a back surface, on which the area pairs are disposed, and an opposite surface being bonded to a back side of the light diffusion layer; and a specular reflection film formed on a back surface of each mirror forming area. An inclination of the mirror forming area with respect to a normal line of the screen close to the projector becomes larger than the inclination of the mirror forming area far from the projector within a cross section perpendicular to the mirror forming areas inside the screen.
    • 反射从投影仪发出的光的屏幕包括光扩散层,通过该光扩散层,从特定角度区域入射的光被透射通过该光扩散层,并且从另一角度区域入射的光直线透射穿过该光扩散层; 区域对具有镜形成区域和非镜像区域; 具有背面的透光层,其上设置有区域对,以及与光扩散层的背面接合的相反表面; 以及形成在每个镜面形成区域的后表面上的镜面反射膜。 反射镜形成区域相对于靠近投影仪的屏幕的法线的倾斜度大于垂直于屏幕内的反射镜形成区域的横截面内远离投影仪的反射镜形成区域的倾斜度。
    • 4. 发明申请
    • Light source device and projector
    • 光源设备和投影机
    • US20070189016A1
    • 2007-08-16
    • US11705761
    • 2007-02-14
    • Kentaro YamauchiToshiaki Hashizume
    • Kentaro YamauchiToshiaki Hashizume
    • F21V7/00
    • F21V7/0025H01J61/045H01J61/86H04N5/7441
    • A light source device includes: a light source lamp having a light-emitting tube with a discharge space and a pair of electrodes disposed in the discharge space of the light-emitting tube; a reflector extending in a substantially concave shape in section, the reflector reflecting a light beam irradiated from the light source lamp; and a sub-reflection mirror having a reflection surface that is disposed to face a reflection surface of the reflector, the sub-reflection mirror reflecting a part of the light beam irradiated from the light source lamp toward the discharge space. The light-emitting tube has a light-emitting section having the discharge space therein and sealing sections provided on both sides of the light-emitting section. The sub-reflection mirror is formed in a shape of a bowl that covers the light-emitting section of the light-emitting tube, the sub-reflection mirror having an opening for mounting the sub-reflection mirror to the light-emitting tube by allowing one of the sealing sections of the light-emitting tube to be inserted thereinto. A heat insulating member is provided to at least a part of the light-emitting section and the other one of the sealing sections of the light-emitting tube.
    • 光源装置包括:具有放电空间的发光管和布置在发光管的放电空间内的一对电极的光源灯; 反射器,其基本上呈凹形的部分延伸,所述反射器反射从所述光源灯照射的光束; 以及副反射镜,其具有设置成面对反射器的反射面的反射面,副反射镜将从光源灯照射的一部分光束反射向放电空间。 发光管具有其中具有放电空间的发光部分和设置在发光部分两侧的密封部分。 副反射镜形成为覆盖发光管的发光部的碗状,副反射镜具有用于通过允许将副反射镜安装到发光管的开口 要插入其中的发光管的密封部分之一。 在发光部的至少一部分和发光管的密封部的另一方面设置隔热部件。
    • 8. 发明申请
    • Method of manufacturing reflective mirror, illumination device, and projector
    • 制造反射镜,照明装置和投影仪的方法
    • US20050083494A1
    • 2005-04-21
    • US10916603
    • 2004-08-12
    • Toshiaki Hashizume
    • Toshiaki Hashizume
    • G02F1/13C03B23/07F21S2/00F21V7/00F21V7/06F21V7/08F21V7/09F21V13/00F21Y101/00G03B21/14G03B21/28
    • H04N9/315C03B23/07G03B21/2066
    • A reflective mirror manufacturing method for manufacturing a reflective mirror used in an illumination device including an arc tube including a light-emitting portion and a reflective mirror including a reflective surface that reflects light from the light-emitting portion in a predetermined direction, includes: a first step of forming a tube by heating a tube consisting of a material of the reflective mirror, thereafter putting the tube in a form block, applying internal pressure with an inert gas to cause a center portion of the tube to expand, so that part of an inner surface of the expanded center portion includes a shape corresponding to the reflective surface of the reflective mirror; a second step of cutting the tube at the center portion to form a reflective mirror member; and a third step of forming a reflective layer on an inner surface of the reflective mirror member. For this reason, it becomes possible to manufacture, at an inexpensive manufacturing cost, a smooth reflective mirror whose surface roughness is extremely small and whose light use efficiency is high.
    • 一种用于制造反射镜的反射镜制造方法,包括:包括发光部分的电弧管和包括反射表面的反射镜,所述反射镜包括反射表面,所述反射表面沿预定方向反射来自所述发光部分的光,所述反射镜制造方法包括: 通过加热由反射镜的材料构成的管,然后将管置于模块中,用惰性气体施加内压使管的中心部分膨胀来形成管的第一步骤,使得部分 扩张中心部分的内表面包括与反射镜的反射表面对应的形状; 第二步骤,在中心部分切割管以形成反射镜构件; 以及在反射镜构件的内表面上形成反射层的第三步骤。 因此,可以以廉价的制造成本制造表面粗糙度非常小,光使用效率高的平滑反射镜。