-
公开(公告)号：US4405862A
公开(公告)日：1983-09-20
申请号：US326025
申请日：1981-11-30
申请人： Claude Bricot , Jean-Claude Dubois , Francois LeCarvennec , Jean-Claude Lehureau , Henriette Magna
发明人： Claude Bricot , Jean-Claude Dubois , Francois LeCarvennec , Jean-Claude Lehureau , Henriette Magna
IPC分类号： B41M5/26 , G11B7/24 , G11B7/241 , G11B7/243 , G11B7/253 , G11B7/257 , G11B7/26 , G11B11/00 , G03C5/16
CPC分类号： G11B11/00 , G11B7/241 , G11B7/26 , G11B7/2433 , G11B7/2531 , G11B7/2535 , G11B7/2575 , Y10S430/165
摘要： The present invention relates to data-carrier intended for the high-density recording of information by the use of an etching radiation beam. The data-carrier comprises a substrate upon which there are deposited a very thin film which is absorbent at the wavelength of the etching beam, and a film which is thermodegradable at a temperature lower than the degradation temperature of the absorbent film, the heat developed in the absorbent film being selectively diffused towards the adjacent thermodegradable film.
-
公开(公告)号：US4025784A
公开(公告)日：1977-05-24
申请号：US598164
申请日：1975-07-22
CPC分类号： G11B7/0917 , G02B7/34 , G11B7/0908
摘要： A device for detecting the error in focussing a read-out beam on the impression. Two photodetector cells located respectively in front of and behind the optical axis of the system, in relation to the direction of transfer, produce two electrical signals the difference between which is the read-out signal, a control signal being obtained by a comparison of the phases of the two signals, one of which is phase-shifted so that the optimum focussing point corresponds to zero phase-shift.
摘要翻译： 用于检测将读出光束聚焦在印象上的误差的装置。 分别位于系统的光轴前后的两个光电检测器单元相对于传送方向产生两个电信号，其差是读出信号，控制信号是通过比较 两个信号的相位，其中之一是相移，使得最佳聚焦点对应于零相移。
-
公开(公告)号：US4203133A
公开(公告)日：1980-05-13
申请号：US673057
申请日：1976-04-02
CPC分类号： G11B7/0917
摘要： The present invention relates to the reading out of a track by means of a light spot which scans a track along which the information contained in a record is transcribed. The object of the invention is a read-out system which ensured focussing and tracking by the synchronous detection of positional errors with the help of a read-out beam one of the halves of which is intercepted by a half-wave plate; an oscillatory motion is imparted to the read-out spot in the plane containing the track.
摘要翻译： 本发明涉及通过扫描记录在记录中的信息的轨迹的光点来读出轨迹。 本发明的目的是一种读出系统，其通过借助于其半部被半波片截取的读出光束，通过同步检测位置误差来确保聚焦和跟踪; 在包含轨道的平面中的读出光点赋予振荡运动。
-
公开(公告)号：US4079247A
公开(公告)日：1978-03-14
申请号：US684355
申请日：1976-05-07
CPC分类号： G02B27/40 , G11B7/0909 , G11B7/13
摘要： A device for focussing a read-out light beam on a moving data carrier. It comprises an objective lens which causes said read-out beam to converge on the data carrier; a cylindrical lens arranged in the path of a light beam reflected by the data carrier; and photo-electric means for detecting the reflected beam and arranged in such a fashion that the light spot obtained there, normally substantially circular in shape, is distorted by elongation if focussing of the read-out beam on the data carrier is incorrect.
摘要翻译： 用于将读出光束聚焦在移动数据载体上的装置。 它包括使所述读出光束会聚在数据载体上的物镜; 布置在由数据载体反射的光束的路径中的柱面透镜; 以及光电装置，用于检测反射光束并且以这样的方式布置，使得通常在其上形成的大致圆形形状的光斑由于读出光束在数据载体上的聚焦不正确而被伸长变形。
-
5.发明授权Device for the optical read-out of a diffractive track belonging to a data carrier in the form of a disc or tape 失效用于以盘或磁带的形式光学读出属于数据载体的衍射轨道的装置
公开(公告)号：US3971002A
公开(公告)日：1976-07-20
申请号：US483433
申请日：1974-06-26
CPC分类号： G11B7/0901 , G02B7/32 , G11B7/005 , G11B7/12
摘要： The present invention relates to the optical read-out of a diffractive track carried by a data carrier. The object of the invention is an optical read-out device in which concentrated illumination of the track is effected by at least two collateral read-out spots straddling same, in order to produce a track eccentricity signal by subtraction of the voltages furnished by two groups of photo-electric transducers sensitive to the spread in the beams which form said spots.
摘要翻译： 本发明涉及由数据载体携带的衍射轨道的光学读出。 本发明的目的是一种光学读出装置，其中轨道的集中照明由跨过其的至少两个抵押读出点实现，以便通过减去由两组提供的电压来产生轨道偏心信号 的光电传感器对形成所述斑点的光束中的扩散敏感。
-
6.发明授权
公开(公告)号：US4171879A
公开(公告)日：1979-10-23
申请号：US817010
申请日：1977-07-19
CPC分类号： G11B7/12
摘要： The invention relates to a method and a device for the optical reading of information recorded on a support along a track in the form of diffracting elements. A diffraction pattern comprising a luminous central spot centered on the section of the track to be read and alternately dark and bright adjacent fringes is projected onto the support, the dark fringes adjacent to the central spot coinciding with the track sections in the neighborhood of the track section to be read. To that effect a pupil limited by two edges which are parallel to the direction of travel of the track is utilized, this pupil being placed against the reading objective.
摘要翻译： 本发明涉及一种用于以衍射元件的形式沿着轨道记录在支撑体上的信息的光学读取的方法和装置。 包括以要读取的轨道的部分为中心并且相邻条纹相邻的明亮和明亮的发光中心点的衍射图案被投影到支撑件上，与中心点相邻的暗条纹与轨道附近的轨道部分重合 部分阅读。 为此，利用由与轨道的行进方向平行的两个边缘限制的瞳孔，该瞳孔被放置在读取目标上。
-
公开(公告)号：US4139263A
公开(公告)日：1979-02-13
申请号：US726474
申请日：1976-09-24
CPC分类号： G11B7/1365
摘要： The invention relates to an optical reading device, for the read out of data carried by a reflecting support, wherein the source is a non-polarized laser of which the exit surface is reflective; the optical noise due to the reflection of the incident wave at the support is partially suppressed by inserting between the last partially polarizing and/or birefractive element and the data carrier a quarter wavelength plate which optically decouples the incident wave and the return wave. The optical noise is thus limited to the beats between the incident wave and the return wave reflected a second time by the support.
摘要翻译： 本发明涉及一种光学读取装置，用于读出由反射支撑件承载的数据，其中源极是出射表面是反射性的非极化激光器; 通过在最后的部分偏振和/或双折射元件与数据载体之间插入光学去耦合入射波和返回波的四分之一波长板，部分地抑制由支撑件处的入射波反射引起的光学噪声。 因此，光噪声被限制在由支撑件第二次反射的入射波和返回波之间的节拍。
-
8.发明授权Data carrier optically read out by transmission, and method of manufacturing said data carrier 失效通过传输光学读出的数据载体，以及制造所述数据载体的方法
公开(公告)号：US4037251A
公开(公告)日：1977-07-19
申请号：US577106
申请日：1975-05-13
申请人： Claude Bricot , Bernard Carre , Jean Claude Dubois , Francois Le Carvennec , Jean Claude Lehureau , Claude Puech
发明人： Claude Bricot , Bernard Carre , Jean Claude Dubois , Francois Le Carvennec , Jean Claude Lehureau , Claude Puech
CPC分类号： G11B7/24
摘要： The present invention relates to the protection of relief impressions formed in order to store information on a data carrier which can be optically read out by transmission. The invention relates to a data carrier the relief impression in which is protected by at least one layer transparent vis-a-vis the read-out radiation. The protective layer has an index of refraction that differs from that of the data carrier, per se. Thus, a refractive boundary at the relief impression is maintained and the information encoded in the diffractive relief pattern is preserved.
摘要翻译： 本发明涉及为了将信息存储在可通过传输光学读出的数据载体上而形成的浮雕印痕的保护。 本发明涉及一种数据载体，其中的浮雕印象由相对于读出的辐射透明的至少一层保护。 保护层本身具有与数据载体不同的折射率。 因此，保持浮雕印模处的折射边界并且保留在衍射浮雕图案中编码的信息。
-
公开(公告)号：US4023033A
公开(公告)日：1977-05-10
申请号：US727803
申请日：1976-09-29
CPC分类号： G11B7/0909
摘要： A device for focussing a read-out light beam on a moving data carrier. It comprises an objective lens which causes said read-out beam to converge on the data carrier; a cylindrical lens arranged in the path of a light beam reflected by the data carrier; and photo-electric means for detecting the reflected beam and arranged in such a fashion that the light spot obtained there, normally substantially circular in shape, is distorted by elongation if focussing of the read-out beam on the data carrier is incorrect.
摘要翻译： 用于将读出光束聚焦在移动数据载体上的装置。 它包括使所述读出光束会聚在数据载体上的物镜; 布置在由数据载体反射的光束的路径中的柱面透镜; 以及光电装置，用于检测反射光束并且以这样的方式布置，使得通常在其上形成的大致圆形形状的光斑由于读出光束在数据载体上的聚焦不正确而被伸长变形。
-
10.发明授权Stigmatic optical device and an optical recording head equipped with said device 失效固定式光学装置和配备有所述装置的光学记录头
公开(公告)号：US4334300A
公开(公告)日：1982-06-08
申请号：US208005
申请日：1980-11-18
申请人： Louis Arquie , Claude Bricot , Jean-Claude Lehureau , Michel Thirouard , Jean-Pierre Le Merer , Dominique Leterme
发明人： Louis Arquie , Claude Bricot , Jean-Claude Lehureau , Michel Thirouard , Jean-Pierre Le Merer , Dominique Leterme
CPC分类号： G02B19/0085 , G02B19/0028 , G02B19/0052 , G02B27/09 , G02B27/0972 , G11B7/12 , G11B7/1356
摘要： An optical device for forming a stigmatic image of a laser source positioned at a predetermined point is intended to illuminate a reflecting surface while also providing a separation between the beam emerging from the source and the beam reflected from the surface. The device comprises a cube placed against a converging lens, the dimensions of the assembly thus formed being such that the cube face remote from the lens passes through a Weierstrass point of the spherical refracting surface formed by the lens. The laser source is positioned at the Weierstrass point. The cube is formed by two prisms cemented together, the interface being treated so as to have a polarization-separating effect.
摘要翻译： 用于形成位于预定点处的激光源的眩光图像的光学装置旨在照亮反射表面，同时还提供从源出射的光束和从表面反射的光束之间的间隔。 该装置包括靠着会聚透镜放置的立方体，由此形成的组件的尺寸使得远离透镜的立方体通过透镜形成的球面折射表面的Weierstrass点。 激光源位于Weierstrass点。 该立方体由两个粘结在一起的棱镜形成，该界面被处理以具有偏振分离效果。
-
-
-
-
-
-
-
-
-
搜索结果
49 条记录 (耗时 0.017 秒)
