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1. 发明授权

US4987566A Optical head apparatus 失效
标题翻译：光头设备
公开(公告)号：US4987566A
公开(公告)日：1991-01-22
申请号：US341649
申请日：1989-04-21
申请人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondou , Kazuo Iwata
发明人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondou , Kazuo Iwata
IPC分类号： G11B7/125 , H01S5/02
CPC分类号： G11B7/127 , H01S5/02 , H01S5/0207
摘要： In case that the light beam emitted from a light source mounted on a base element is focused to a spot light on a data storage media to write the data, when the light beam reflected from the data storage media to return to the light source is reflected from the base element and focused again on the data storage media, it becomes difficult to precisely read/write the data on the storage media. In order to resolve the above problem, a light beam treating means is provided in the base element to prevent the re-incident light beams from being reflected toward the data storage media and focused thereon.

2. 发明授权

US4888760A Optical head apparatus 失效
标题翻译：光头设备
公开(公告)号：US4888760A
公开(公告)日：1989-12-19
申请号：US159412
申请日：1988-02-12
申请人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondou , Kazuo Iwata
发明人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondou , Kazuo Iwata
IPC分类号： G11B7/125 , H01S5/02
CPC分类号： G11B7/127 , H01S5/02 , H01S5/0207
摘要： In case that the light beam emitted from a light source mounted on a base element is focused to a spot light on a data storage media to write the data, when the light beam reflected from the data storage media to return to the light source is reflected from the base element and focused again on the data storage media, it becomes difficult to precisely read/write the data on the storage media. In order to resolve the above problem, a light beam treating means is provided in the base element to prevent the re-incident light beams from being reflected toward the data storage media and focused thereon.
摘要翻译：在从安装在基座元件上的光源发射的光束聚焦到数据存储介质上的点光以写入数据的情况下，当从数据存储介质反射回到光源的光束被反射时从基本元素再次聚焦在数据存储介质上，难以在存储介质上精确地读/写数据。为了解决上述问题，光束处理装置设置在基体元件中，以防止再入射光束朝向数据存储介质反射并聚焦在其上。

3. 发明授权

US5765934A Projection type display 失效
标题翻译：投影型显示
公开(公告)号：US5765934A
公开(公告)日：1998-06-16
申请号：US690670
申请日：1996-07-31
申请人： Shinji Okamori , Akira Daijogo , Hiroshi Kida , Shinsuke Shikama , Eiichi Toide
发明人： Shinji Okamori , Akira Daijogo , Hiroshi Kida , Shinsuke Shikama , Eiichi Toide
IPC分类号： F21V8/00 , H04N5/74 , H04N9/31 , G03B21/28
CPC分类号： H04N9/3105 , G02B6/0006 , G03B21/2013 , H04N9/3147 , H04N9/315 , H04N9/3164
摘要： In a light source apparatus for use with a projection type display, at least one light source is provided for emitting light. A reflector is provided correspondingly to the light source in order to gather the light emitted from the light source into a small area to form a converged luminous flux. A light guide has at least one light input section into which the luminous flux is coupled. The light input section is provided correspondingly to the light source. The light guide combines the luminous flux received through the light input sections into a single beam of luminous flux. The light-guide has at least one light output section from which said luminous flux is output. The light source apparatus may also include light-refracting element provided between the reflector and the light-guide. The light-refracting element receives the converged luminous flux from the reflector to refract the converged luminous flux so as to couple the converged luminous flux, as a uniform luminous flux, into the light-guide.
摘要翻译：在与投影型显示器一起使用的光源装置中，提供至少一个用于发光的光源。对应于光源设置反射器，以将从光源发射的光聚集成小面积以形成会聚光束。光导具有至少一个光输入部分，光通量耦合到光输入部分中。光输入部分对应于光源设置。光导将通过光输入部分接收的光通量组合成单光束。光导具有至少一个输出所述光通量的光输出部分。光源装置还可以包括设置在反射器和光导之间的光折射元件。光折射元件从反射器接收会聚光束，以折射会聚光束，以将作为均匀光通量的会聚光束耦合到光导中。

4. 发明授权

US4811329A Optical head with laser having particular source of driving current 失效
标题翻译：具有激光的光头具有特定的驱动电流源
公开(公告)号：US4811329A
公开(公告)日：1989-03-07
申请号：US58879
申请日：1987-06-05
申请人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondo
发明人： Shinsuke Shikama , Eiichi Toide , Mitsushige Kondo
IPC分类号： G11B7/125 , G11B7/00
CPC分类号： G11B7/126
摘要： An optical type head device comprises a laser beam source for emitting a laser beam, a light focussing means for converging the laser beam on a data storing surface of an optical type data storing medium, a laser beam detecting means which receives the laser beam reflected by the optical type data storing medium and modulated by data held by the same, and converts the data into electric signals, a driving current supplying means for supplying a driving current to the laser beam source. The driving current supplying means comprises a high frequency current generator which supplys to the laser beam source a high frequency current having a waveform ranging from the lower part of the threshold value at which the laser beam source starts emission of the laser beam to the higher part of the thresheld value, and the frequency of the high frequency current is at least twice as high as the maximum frequency component of information which is contained in the data storing medium.
摘要翻译：一种光学头装置，包括用于发射激光束的激光束源，用于将激光束会聚在光学型数据存储介质的数据存储表面上的光聚焦装置，接收由光学型数据存储介质，并由其保存的数据进行调制，并将数据转换为电信号;驱动电流供应装置，用于向激光束源提供驱动电流。驱动电流供给装置包括高频电流发生器，其向激光束源提供具有从激光束源开始激光束发射到较高部分的阈值的下部的波形的高频电流的高频电流的频率至少是包含在数据存储介质中的信息的最大频率分量的两倍。

5. 发明授权

US4789978A System and method of astigmatism correction in an optical head apparatus 失效
标题翻译：光学头装置中散光校正的系统和方法
公开(公告)号：US4789978A
公开(公告)日：1988-12-06
申请号：US933805
申请日：1986-11-24
申请人： Shinsuke Shikama , Eiichi Toide
发明人： Shinsuke Shikama , Eiichi Toide
IPC分类号： G11B7/09 , G11B7/08 , G11B7/12 , G11B7/135 , G11B7/125
CPC分类号： G11B7/12 , G11B7/1374
摘要： An optical head apparatus comprises a laser light source device emitting linearly polarized light, a converging lens for converging the light pencil emitted from the laser light source onto information recording tracks on a recording medium, and an optical system including a beam splitter for separating the light pencil reflected from the recording medium from the light pencil emitted from the laser light source. The converging lens is one formed by molding. The rotary position of the converging lens about the optical axis of the converging lens is so adjusted that the astigmatism of the optical system from the laser light source to the recording medium is minimum.
摘要翻译：光头装置包括发射线性偏振光的激光光源装置，用于将从激光光源发射的光笔聚焦到记录介质上的信息记录道的会聚透镜，以及包括用于分离光的分束器的光学系统从激光光源发出的光笔从记录介质反射的铅笔。会聚透镜是通过成型形成的。会聚透镜围绕会聚透镜的光轴的旋转位置被调整为使得光学系统从激光光源到记录介质的像散最小。

6. 发明授权

US5135300A Projection color display apparatus 失效
标题翻译：投影彩色显示设备
公开(公告)号：US5135300A
公开(公告)日：1992-08-04
申请号：US645631
申请日：1991-01-25
申请人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo , Hiroshi Kida , Masahiro Usui
发明人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo , Hiroshi Kida , Masahiro Usui
IPC分类号： H04N9/31
CPC分类号： H04N9/315
摘要： Three light fluxes are modulated by corresponding light valves so as to project a color image on a screen. An interference filter for selectively transmitting a light flux which is emitted in a direction perpendicular to a light emitting surface of the interference filter is disposed on the light-emitting portion so as to increase the intensity of light fluxes which are emitted in the forward direction. A light-flux-emitting portion of a light source and the light valve have approximately the same configuration so that the intensity of the light fluxes to be projected on the light valves is increased.
摘要翻译：三个光通量由相应的光阀调制，以便将彩色图像投射在屏幕上。用于选择性地发射在与干涉滤光器的发光表面垂直的方向上发射的光束的干涉滤光器设置在发光部分上，以便增加沿正向发射的光束的强度。光源的光束发射部分和光阀具有大致相同的构造，使得要投射到光阀上的光束的强度增加。

7. 发明授权

US4835761A Signal to noise ratio of optical head apparatus employing semiconductor laser beam source 失效
标题翻译：使用半导体激光束源的光头装置的信噪比
公开(公告)号：US4835761A
公开(公告)日：1989-05-30
申请号：US928816
申请日：1986-11-07
申请人： Shinsuke Shikama , Eiichi Toide
发明人： Shinsuke Shikama , Eiichi Toide
IPC分类号： G11B7/09 , G11B7/12 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/12
摘要： In an optical head apparatus for an optical information carrier comprising a semiconductor laser beam source, a condenser lens system and a beam splitter interposed therebetween in an optical system wherein the noise level may be beyond the allowable limit due to the excessive amount of the laser beam which is made incident on the laser beam source after being reflected by the information carrier, the reflected light attenuating means is provided between the optical information carrier and the semiconductor laser beam source, so that the noise level can be set to remain within the allowable limit.
摘要翻译：在一种光学信息载体的光学头装置中，包括半导体激光束源，聚光透镜系统和光束分离器插入其间的光学信息载体，其中由于激光束的过量，噪声水平可能超出允许极限在由信息载体反射之后入射到激光束源上的反射光衰减装置设置在光信息载体和半导体激光束源之间，使得噪声电平可以被设定为保持在可允许极限内。

8. 发明授权

US5745297A Retrofocus lens system 失效
标题翻译：后视镜系统
公开(公告)号：US5745297A
公开(公告)日：1998-04-28
申请号：US678691
申请日：1996-07-11
申请人： Toshihide Kaneko , Shinsuke Shikama , Eiichi Toide
发明人： Toshihide Kaneko , Shinsuke Shikama , Eiichi Toide
IPC分类号： G02B13/04 , G02B13/16 , G02B3/00
CPC分类号： G02B13/22 , G02B13/04
摘要： A retrofocus lens system comprises, in order from a large conjugate side: a first lens group having a negative refracting power and including a plurality of lens elements; a second lens group having a positive refracting power; and a third lens group having a positive refracting power. Each of the lens elements of the first lens group has a negative refracting power. Following conditional expressions (1) to (3) are satisfied: 1.3
摘要翻译：复镜透镜系统从大共轭侧依次包括具有负折射率并包括多个透镜元件的第一透镜组; 具有正折射率的第二透镜组; 以及具有正折射率的第三透镜组。第一透镜组的每个透镜元件具有负的折射光焦度。满足条件式（1）〜（3）：1.3

9. 发明授权

US5248518A Projection cathode ray tube 失效
标题翻译：投影阴极射线管
公开(公告)号：US5248518A
公开(公告)日：1993-09-28
申请号：US867450
申请日：1992-04-13
申请人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
发明人： Eiichi Toide , Shinsuke Shikama , Mitsushige Kondo
IPC分类号： H01J29/18 , H01J29/28 , H01J29/89
CPC分类号： H01J29/898 , H01J29/18 , H01J29/28 , H01J2229/8916
摘要： A projection cathode ray tube has an interference filter which is disposed at a boundary between a face plate and fluorescent layers. The interference filter is designed to be thinnest at the central area of the CRT and to become gradually thicker toward the peripheral area of the CRT, so that the CRT can produce a uniformly bright image over the central and peripheral areas. The fluorescent layers include a first layer composed of small fluorescent particles and a second layer composed of large fluorescent particles. With this first fluorescent layer, light beams emitted by the second fluorescent layer can be prevented from being reflected in multiple directions, thereby minimizing halo due to such multi-direction reflection of the light beams.
摘要翻译：投影阴极射线管具有设置在面板和荧光层之间的边界处的干涉滤光器。干涉滤光片被设计成在CRT的中心区域最薄，并且朝向CRT的周边区域逐渐变厚，使得CRT可以在中央和外围区域上产生均匀的明亮图像。荧光层包括由小荧光颗粒构成的第一层和由大荧光颗粒组成的第二层。利用该第一荧光层，可以防止由第二荧光层发射的光束在多个方向上被反射，从而由于光束的这种多方向反射而使晕圈最小化。

10. 发明授权

US5216649A Optical head with a tilt correction servo mechanism 失效
标题翻译：具有倾斜校正伺服机构的光头
公开(公告)号：US5216649A
公开(公告)日：1993-06-01
申请号：US368180
申请日：1989-06-19
申请人： Manabu Koike , Shinsuke Shikama , Eiichi Toide , Toru Yoshihara , Takashi Saito
发明人： Manabu Koike , Shinsuke Shikama , Eiichi Toide , Toru Yoshihara , Takashi Saito
IPC分类号： G11B7/09 , G11B7/095 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/0956 , G11B7/1365 , G11B7/1374 , G11B7/1395
摘要： An optical head device includes a tilt servo mechanism using photodetectors for detecting rays of light reflected from the recording surface of an optical disk. The rays of light are obtained from a laser diode used as a light source for information reproduction. According to one aspect; prisms are formed on the flange of a converging lens to refract peripheral portions of the light emitted from the laser diode for tilt detection. According to another aspect, secondary diffraction grating domains at the sides of the primary diffraction domain of a diffraction grating diffract peripheral portions of the emitted rays of light for tilt detection. According to another aspect, a mirror reflects peripheral portions of the emitted rays from the laser diode. According to a further aspect a mirror reflects the light from the laser diode passing through a beam splitter. Each photodetector receiving the light reflected from the recording surface of the disk may be partitioned into two detector cells, and a tilt signal is obtained as the differential output of the two cells.

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