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    • 1. 发明授权
    • Meter with light transmitting board
    • 仪表带透光板
    • US5915822A
    • 1999-06-29
    • US908711
    • 1997-08-08
    • Akihiro OguraMasanori ToneKazuo AraiTetsuhide TakeyamaToshitaka Higuchi
    • Akihiro OguraMasanori ToneKazuo AraiTetsuhide TakeyamaToshitaka Higuchi
    • G01D11/28G01D13/28
    • B60K37/02G01D11/28G01D13/28G02B3/08B60K2350/203Y10S385/901
    • A transmitted illumination type meter comprises a transparent light transmitting board having both a light entering bore and a shaft passing bore formed therethrough; a translucent dial plate placed on a front surface of the board, the dial plate having a shaft passing opening mated with the shaft passing bore of the board; a movement positioned behind the board; a light source positioned within the light entering bore; a drive shaft extending from the movement to the outside of the dial plate through the shaft passing bore and the shaft passing opening; a transparent pointer connected to the drive shaft to move over a front surface of the dial plate; and an annular convex peripheral wall defining the light entering bore. The annular convex peripheral wall allows light beams from the light source to enter the board and travel in parallel in the same. A plurality of stepped annular light reflecting surfaces are formed on a rear surface of the board and arranged to be concentric with the light entering bore. The annular light reflecting surfaces reflect the light beams from the annular convex peripheral wall toward the front surface of the light transmitting board. A Fresnel lens is formed on the front surface of the board and arranged to be concentric with the light entering bore. The Fresnel lens projects the light beams from the annular light reflecting surfaces toward the dial plate.
    • 透射照明型计量器包括具有光进入孔和穿过其形成的轴通孔的透明透光板; 位于所述板的前表面上的半透明表盘,所述表盘具有与所述板的轴通孔相配合的轴的开口; 位于板后面的运动; 位于所述光进入孔内的光源; 驱动轴,其通过轴通孔和轴通过开口从运动件延伸到表盘的外部; 连接到所述驱动轴以在所述表盘的前表面上移动的透明指针; 以及限定光进入孔的环形凸周壁。 环形凸周壁允许来自光源的光束进入板并在其中平行行进。 多个台阶环形光反射表面形成在板的后表面上并且被布置成与光进入孔同心。 环形光反射表面将来自环形凸周壁的光束反射到透光板的前表面。 菲涅耳透镜形成在板的前表面上,并被布置成与光进入孔同心。 菲涅尔透镜将来自环形光反射表面的光束投射到表盘。
    • 4. 发明申请
    • Observation optical system using volume hologram
    • 观察光学系统使用体积全息图
    • US20050002073A1
    • 2005-01-06
    • US10865830
    • 2004-06-14
    • Tohru NakamuraTetsuhide Takeyama
    • Tohru NakamuraTetsuhide Takeyama
    • G02B5/04G02B5/32G02B17/08G02B25/00G02B27/00G02B27/01G02B27/02G09F9/00H04N5/225H04N5/64H04N7/18G02B17/00
    • G02B27/017G02B27/0172G02B2027/0132G02B2027/0178
    • An observation optical system comprises an image display element 5 and an eyepiece optical system which introduces an image formed by the image display element 5 to a center of an eye of an observer without forming an intermediate image, so as to allow the observer to observe the image as a virtual image. The eyepiece optical system is constructed and arranged to bend the optical axis using reflecting surfaces so as to be compact. The optical axis lies in a plane, with respect to which the optical system is formed symmetric. The optical system includes a prism 3 having an entrance surface 33, a plurality of curved reflecting surfaces 31, 32 and an exit surface 31. The reflecting surface 32 is provided with a volume hologram (HOE) 4. Whereby, it is possible to provide an image observation optical system which can be made compact enough to be usable as an image display unit for a cellular phone or a portable intelligent terminal, and which can achieve high image definition and wide field angle while controlling chromatic aberration of magnification to be small.
    • 观察光学系统包括图像显示元件5和目镜光学系统,其将由图像显示元件5形成的图像引入观察者的眼睛的中心而不形成中​​间图像,以便观察者观察 图像作为虚拟图像。 目镜光学系统被构造和布置成使用反射表面使光轴弯曲以致于紧凑。 光轴位于相对于光学系统对称的平面中。 光学系统包括具有入射表面33,多个弯曲反射表面31,32和出射表面31的棱镜3.反射表面32设置有体积全息图(HOE)4。由此,可以提供 可以将其制造得足够小以用作蜂窝电话或便携式智能终端的图像显示单元,并且可以在控制倍数倍数小的同时实现高图像清晰度和宽视场角的图像观察光学系统。
    • 5. 发明授权
    • Viewing optical system and image display apparatus using the same
    • 观看光学系统和使用其的图像显示装置
    • US06445507B2
    • 2002-09-03
    • US09796424
    • 2001-03-02
    • Takayoshi ToginoTetsuhide Takeyama
    • Takayoshi ToginoTetsuhide Takeyama
    • G20B2714
    • G02B27/0172G02B2027/0132G02B2027/0178H04N5/44H04N5/7408H04N5/7491
    • A compact, bright and high-performance viewing optical system capable of color display has a reflection type image display device, an ocular optical system and an illuminating device formed from a plurality of juxtaposed illuminating light sources of different colors. An illuminating light guide optical device is placed between the entrance pupil and the reflection type image display device. The ocular optical system includes a decentered prism formed from a medium surrounded by three optical surfaces and having a refractive index larger than 1. A chromatic aberration producing device is placed between the entrance pupil and the illuminating light guide optical device. The chromatic aberration producing device is arranged to superimpose the images of the plurality of illuminating light sources on one another in the exit pupil.
    • 能够进行彩色显示的紧凑,明亮且高性能的观察光学系统具有反射型图像显示装置,眼睛光学系统和由多个并列的不同颜色并置的照明光源形成的照明装置。 照明光导光学装置被放置在入射光瞳和反射型图像显示装置之间。 眼睛光学系统包括由三个光学表面围绕并具有大于1的折射率的介质形成的偏心棱镜。在入射光瞳和照明光导光学装置之间放置色差产生装置。 色差产生装置被布置成在出射光瞳中将多个照明光源的图像彼此叠加。
    • 9. 发明授权
    • Image capturing unit and image capturing device
    • 图像捕获单元和图像捕获设备
    • US07043153B2
    • 2006-05-09
    • US10829238
    • 2004-04-22
    • Tetsuhide TakeyamaToshiyuki Nagaoka
    • Tetsuhide TakeyamaToshiyuki Nagaoka
    • G03B5/00G02B1/06G02B3/14
    • G02B13/0075A61B1/0019A61B1/041G02B13/14
    • An image capturing unit comprises a variable optical element, an optical unit, and a light-flux limiting section. The variable optical element includes a first liquid member, a second liquid member, and a container which contains the first liquid member and the second liquid member. An interfacial shape between the first liquid member and the second liquid member varies according to a voltage which is applied to the liquid members. The light-influx limiting section satisfies following condition 0.1
    • 图像拍摄单元包括可变光学元件,光学单元和光通量限制部。 可变光学元件包括第一液体部件,第二液体部件和容纳第一液体部件和第二液体部件的容器。 第一液体构件和第二液体构件之间的界面形状根据施加到液体构件的电压而变化。 光入射限制部分满足以下条件<?in-line-formula description =“In-line Formulas”end =“lead”?> 0.1 <(Phi-2xh)<20.0 <?in-line-formula description =“ 其中Phi(mm)表示可变光学元件中的轴向光通量的最大直径,h(mm)表示在光线上的轴向光通量的最高位置 - 可变光学元件的固定端。 通过这样做,可以限制耀斑光和重影光,并且防止在捕获的图像中观察到液体部件中的杂质。