公开(公告)号：US20020109849A1

公开(公告)日：2002-08-15

申请号：US10043260

申请日：2002-01-14

Applicant: Pioneer Corporation

Inventor： Hiroaki Kitahara ,  Yoshiaki Kojima ,  Yasumitsu Wada

IPC: G01B009/02

CPC classification number: G01B9/02007 ,  G01B9/02003 ,  G01B9/02021 ,  G01B9/02045 ,  G01B2290/70

Abstract: A laser-based measuring apparatus divides a light beam from a laser light source into at least two light beams, passes the light beams through different optical paths from each other, recombines the light beams, has the light beams interfere with each other to generate interfered light, opto-electrically transduces the interfered light to an optical frequency, and measures the amount of travel of an object which changes an optical path length of a portion of an optical path based on the optical frequency. The measuring apparatus has a portion for generating at least two measuring light beams from the laser light source, two reflection planes included in an object moving on a measuring axis, arranged back-to-back to each other on the measuring axis, and an opposing incident optical system for directing the measuring light beams into the reflection planes, respectively, such that the measuring light beams oppose to each other on the measuring axis.

Abstract translation: 基于激光的测量装置将来自激光光源的光束分成至少两个光束，使光束彼此通过不同的光路，使光束复合，使光束彼此干涉，产生受干扰的 将光被光电转换成光频，并且测量基于光频率改变光路的一部分的光路长度的物体的行进量。 测量装置具有用于从激光光源产生至少两个测量光束的部分，包括在测量轴上移动的物体中的两个反射平面，其在测量轴线上彼此背对背地相对配置，并且相对 入射光学系统，用于分别将测量光束引导到反射平面中，使得测量光束在测量轴线上彼此相对。

公开(公告)号：US20020172130A1

公开(公告)日：2002-11-21

申请号：US10108702

申请日：2002-03-29

Applicant: PIONEER CORPORATION

Inventor： Yasumitsu Wada

IPC: G11B009/10

CPC classification number: G11B7/261 ,  G11B7/24082

Abstract: Disclosed is a grooving apparatus which can carry information on an information track at high recording density when carrying the information on the information track through a change in shape of a groove and which also can improve the signal-to-noise ratio of the information under reproduction. A grooving apparatus for forming a groove to function as an information track in an optical disk comprises an electron beam generator which emits an electron beam, an objective lens which focuses the emitted electron beam on the optical disk and which focuses the electron beam on a smaller range than the size of the groove, and an X-direction deflector and a Y-direction deflector which controls the electron beam so that the electron beam is focused in position on the optical disk, thereby forming the groove in the optical disk.

Abstract translation: 公开了一种开槽装置，当通过凹槽的形状改变在信息轨道上传送信息时，能够以高记录密度携带信息在信息轨道上，并且还可以提高再现中的信息的信噪比 。 用于形成用作光盘中的信息轨道的槽的切槽装置包括发射电子束的电子束发生器，将发射的电子束聚焦在光盘上并使电子束聚焦在较小的电子束上的物镜 以及控制电子束的X方向偏转器和Y方向偏转器，使得电子束聚焦在光盘上的适当位置，从而在光盘中形成凹槽。

公开(公告)号：US20040069952A1

公开(公告)日：2004-04-15

申请号：US10679416

申请日：2003-10-07

Applicant: PIONEER CORPORATION

Inventor： Masahiro Katsumura ,  Yoshiaki Kojima ,  Yasumitsu Wada ,  Hiroaki Kitahara

IPC: H01J037/244

CPC classification number: H01J37/28 ,  H01J2237/21

Abstract: A beam adjusting sample having a flat surface being like a plate and having two edges orthogonal to each other is employed. A beam is applied to the beam adjusting sample to detect an amount of the beam passing through the beam adjusting sample. The beam vertically scans the two edges.

Abstract translation: 采用具有平板表面并具有彼此正交的两个边缘的平坦表面的光束调节样品。 光束被施加到光束调整样本以检测通过光束调节样本的光束的量。 光束垂直扫描两个边缘。

公开(公告)号：US20010024422A1

公开(公告)日：2001-09-27

申请号：US09813306

申请日：2001-03-21

Applicant: Pioneer Corporation

Inventor： Osamu Kasono ,  Yoshiaki Kojima ,  Yasumitsu Wada

IPC: G11B015/64 ,  G11B007/00 ,  G11B017/32

CPC classification number: G11B7/1387 ,  G11B7/0927 ,  G11B7/0948 ,  G11B7/122

Abstract: Preceding to the reading out of the recording information of the optical disk by the pick-up, the height of the foreign material existing at the light converging position on the information reading surface is detected by the detector, and when the height of the foreign material is higher than the floating height h of the SIL, the magnetic field is generated by applying the control current corresponding to the height of the foreign material to the coil as the magnetic field generator at the timing before the foreign material is moved to the information reading position of the pick-up by the rotation of the optical disk. Then, when the magnetic field is provided to the magnetic substance fixedly holding the SIL which is floating, the movement operation to separate the SIL to the higher position than the height of the foreign material from the information reading surface together with the magnetic substance, is conducted.

Abstract translation: 在通过拾取器读出光盘的记录信息之前，通过检测器检测存在于信息读取表面上的聚光位置的异物的高度，并且当异物的高度 高于SIL的浮动高度h时，通过在外来材料移动到信息读取之前的时刻将与异物的高度相对应的控制电流作为磁场发生器施加到线圈，产生磁场 通过光盘的旋转拾取拾取位置。 然后，当将磁场提供给固定保持浮动的SIL的磁性体时，将SIL与磁性物质一起从信息读取表面分离出高于异物的高度的位置的移动操作是 进行。

公开(公告)号：US20030071230A1

公开(公告)日：2003-04-17

申请号：US10270068

申请日：2002-10-15

Applicant: Pioneer Corporation

Inventor： Yasumitsu Wada

IPC: H01J037/147

CPC classification number: H01J37/26 ,  H01J2237/153 ,  H01J2237/282

Abstract: An electron beam apparatus for irradiating a target with an electron beam includes a reference sample including at least one reference pattern which has a plurality of lattice structures arranged along the circumference of a circle in a evaluation surface of the reference sample; and an adjustment section for adjusting the electron beam by irradiating the evaluation surface with the electron beam on the basis of electrons generated from the reference sample.

公开(公告)号：US20020080713A1

公开(公告)日：2002-06-27

申请号：US10006987

申请日：2001-12-10

Applicant: Pioneer Corporation

Inventor： Takayuki Nomoto ,  Takuma Yanagisawa ,  Yasumitsu Wada ,  Seiichi Ohsawa ,  Fumihiko Yokogawa

IPC: G11B007/24

CPC classification number: G11B7/24085 ,  G11B7/007 ,  G11B7/0906

Abstract: The invention relates to an optical disc of the next generation which is capable of recording data at a high density by using an optical system having a larger numerical aperture and a reproduce beam of light with a shorter wavelength than those used with a conventional DVD. The optical disc includes an information recording layer where information is recorded as an array of pits at a predetermined track pitch, and a light transmitting layer formed on the information recording layer and having a film thickness of 0.13 mm or less. The information recorded therein is reproduced upon irradiation of a beam of light having a wavelength ranging from 400 nm to 415 nm onto the information recording layer through the light transmitting layer from an objective lens having a numerical aperture ranging from 0.75 to 0.86. In this disc, a taper angle of the pits is 55 degrees or higher.

Abstract translation: 本发明涉及下一代的光盘，其能够通过使用具有较大数值孔径的光学系统和具有比常规DVD使用的波长更短的波长的再生光束来以高密度记录数据。 光盘包括信息记录层，其信息被记录为预定轨道间距的凹坑阵列，以及形成在信息记录层上并具有0.13mm以下的膜厚度的透光层。 通过从数值孔径范围为0.75至0.86的物镜通过光透射层，将具有400nm至415nm波长的波长的光束照射到信息记录层上，再现其中记录的信息。 在该盘中，凹坑的锥角为55度以上。