利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

34 条记录 (耗时 0.014 秒)

    Video projection apparatus capable of operating at optimum resonant frequency and its controlling method
    3.
    发明授权
    Video projection apparatus capable of operating at optimum resonant frequency and its controlling method 有权
    能够以最佳谐振频率工作的视频投影装置及其控制方法

    公开(公告)号：US09414032B2

    公开(公告)日：2016-08-09

    申请号：US14886903

    申请日：2015-10-19

    申请人： STANLEY ELECTRIC CO., LTD.

    发明人： Ryohei Ikeno ,  Takao Saito

    IPC分类号： H04N3/08 ,  H04N9/31 ,  H04N5/64 ,  G02B26/08 ,  G02B26/10 ,  H04N9/14

    CPC分类号： H04N9/3135 ,  G02B26/0833 ,  G02B26/105 ,  G09G3/025 ,  H04N9/14

    摘要： A video projection apparatus includes: a light source; an optical deflector having a mirror for reflecting light to project a view field, an actuator for rocking the mirror with an axis of the mirror and a sensor provided in the vicinity of the actuator; and a control unit. The control unit generates a sine-wave voltage applied to the actuator and a cosine-wave voltage; calculates a first convolution between the sine-wave voltage and a sense voltage from the sensor; calculates a second convolution between the cosine-wave voltage and the sense voltage; converts an orthogonal coordinate formed by the first convolution and the second convolution into a polar coordinate formed by a radius component and an angle component; and sweeps the frequency of the first and second voltages so that the frequency is defined as a resonant frequency when the radius component is maximum.

    摘要翻译： 一种视频投影设备，包括：光源; 具有用于反射光以投影视野的反射镜的光学偏转器，用于使反射镜的轴摆动的致动器和设置在致动器附近的传感器; 和控制单元。 控制单元产生施加到致动器的正弦波电压和余弦波电压; 计算来自传感器的正弦波电压和感测电压之间的第一卷积; 计算余弦波电压和感测电压之间的第二个卷积; 将由第一卷积和第二卷积形成的正交坐标转换成由半径分量和角度分量形成的极坐标; 并且扫描第一和第二电压的频率，使得当半径分量最大时，频率被定义为谐振频率。

    IMAGE DISPLAY DEVICE
    4.
    发明申请
    IMAGE DISPLAY DEVICE 有权
    图像显示设备

    公开(公告)号：US20130320236A1

    公开(公告)日：2013-12-05

    申请号：US14000122

    申请日：2012-02-29

    申请人： Masahiko Ohta ,  Kazuhiko Aoki

    发明人： Masahiko Ohta ,  Kazuhiko Aoki

    IPC分类号： H04N9/77 ,  H04N9/14

    CPC分类号： H04N9/77 ,  G02B5/12 ,  G02B26/101 ,  G09G3/02 ,  G09G2310/02 ,  G09G2360/145 ,  H04N9/14 ,  H04N9/3135

    摘要： An image display device includes an excitation light source; a fluorescent screen including a plurality of phosphor regions that are repeatedly formed in an in-plane direction and a retro-reflection region that reflects a part of incident light in the opposite direction of the incident light; a scanning unit that scans a surface of the fluorescent screen on which the phosphor regions and the retro-reflection region are formed with excitation light from the excitation light source; a photo detection unit that outputs signal value that varies on the basis of an incident light amount onto the photo detection unit; a reflection unit that reflects retro-reflection light of the excitation light directed from the retro-reflection region to the photo detection unit; and a control unit that causes the scanning unit to scan the fluorescent; detects boundaries between the phosphor regions and the retro-reflection region on the fluorescent screen based on the output signal of the photo detection unit, and controls a light emission timing of the excitation light source based on the detected boundaries.

    摘要翻译： 图像显示装置包括激励光源; 荧光屏，其包括在面内方向上重复形成的多个荧光体区域和反射与入射光的相反方向上的入射光的一部分的后向反射区域; 扫描单元，其利用来自激发光源的激发光来扫描其上形成有荧光体区域和后向反射区域的荧光屏的表面; 光检测单元，其将基于入射光量而变化的信号值输出到光检测单元; 反射单元，其将从后向反射区域引导的激发光的反射光反射到光检测单元; 以及控制单元，其使所述扫描单元扫描所述荧光; 基于光检测单元的输出信号，检测荧光屏上的荧光体区域与逆反射区域之间的边界，并且基于检测到的边界来控制激发光源的发光定时。

    LIGHT FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY DEVICE
    6.
    发明申请
    LIGHT FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY DEVICE 有权
    光通量直径放大元件和显示器件

    公开(公告)号：US20160282615A1

    公开(公告)日：2016-09-29

    申请号：US15058178

    申请日：2016-03-02

    申请人： Seiko Epson Corporation

    发明人： Osamu Yokoyama

    IPC分类号： G02B27/00 ,  G02B5/30 ,  H04N9/31 ,  F21V8/00 ,  G02B5/18 ,  H04N9/14 ,  G02B27/42 ,  G02B27/28

    CPC分类号： G02B27/0081 ,  G02B5/1861 ,  G02B5/1866 ,  G02B27/0172 ,  G02B27/4227 ,  G02B27/4272 ,  G02B2027/0125 ,  G02B2027/0178 ,  H04N9/14 ,  H04N9/31

    摘要： A light flux diameter expanding element (a pupil expanding element) used in a retina scanning display device includes first to fourth diffraction gratings which are provided with grating patterns extending in a first direction, and fifth to eighth diffraction gratings which are provided with grating patterns extending in a second direction, and includes a half-wave plate between the first diffraction grating and the fifth diffraction grating. A first light flux of polarized light in which an electric field vector oscillates in the first direction enters the first diffraction grating. A second light flux of polarized light in which the electric field vector oscillates in the second direction enters the fifth diffraction grating due to the half-wave plate. Therefore, it is possible to expand a diameter of the incident first light flux in the first direction and the second direction and emit the result as the third light flux.

    摘要翻译： 在视网膜扫描显示装置中使用的光通量扩径元件（光瞳扩展元件）包括设置有沿第一方向延伸的光栅图案的第一至第四衍射光栅以及设置有光栅图案延伸的第五至第八衍射光栅 并且在第一衍射光栅和第五衍射光栅之间包括半波片。 其中电场矢量在第一方向上振荡的第一偏振光通量进入第一衍射光栅。 其中电场矢量在第二方向上振荡的第二偏振光通量由于半波片而进入第五衍射光栅。 因此，可以使第一方向和第二方向上的入射的第一光束的直径扩大，并将结果作为第三光束发射。

    Image display device
    10.
    发明授权
    Image display device 有权
    图像显示装置

    公开(公告)号：US08829472B2

    公开(公告)日：2014-09-09

    申请号：US14000122

    申请日：2012-02-29

    申请人： Masahiko Ohta ,  Kazuhiko Aoki

    发明人： Masahiko Ohta ,  Kazuhiko Aoki

    IPC分类号： G02B5/12 ,  H04N9/14 ,  G09G3/02 ,  H04N9/31 ,  G02B26/10 ,  H04N9/77

    CPC分类号： H04N9/77 ,  G02B5/12 ,  G02B26/101 ,  G09G3/02 ,  G09G2310/02 ,  G09G2360/145 ,  H04N9/14 ,  H04N9/3135

    摘要： An image display device includes an excitation light source; a fluorescent screen including a plurality of phosphor regions that are repeatedly formed in an in-plane direction and a retro-reflection region that reflects a part of incident light in the opposite direction of the incident light; a scanning unit that scans a surface of fluorescent screen on which the phosphor regions and the retro-reflection region are formed with excitation light from the excitation light source; a photo detection unit that outputs signal value that varies on the basis of an incident light amount onto the photo detection unit; a reflection unit that reflects retro-reflection light of the excitation light directed from the retro-reflection region to the photo detection unit; and a control unit that causes the scanning unit to scan the fluorescent screen, detects boundaries between the phosphor regions and the retro-reflection region on the fluorescent screen.

    摘要翻译： 图像显示装置包括激励光源; 荧光屏，其包括在面内方向上重复形成的多个荧光体区域和反射与入射光的相反方向上的入射光的一部分的后向反射区域; 扫描单元，其利用来自所述激发光源的激发光扫描其上形成有所述荧光体区域和所述后向反射区域的荧光屏的表面; 光检测单元，其将基于入射光量而变化的信号值输出到光检测单元; 反射单元，其将从后向反射区域引导的激发光的反射光反射到光检测单元; 以及控制单元，其使扫描单元扫描荧光屏，检测荧光屏上的荧光体区域和后向反射区域之间的边界。