专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06430139B1 Objective lens for high-density optical focusing, and optical pickup using the same 失效
标题翻译：用于高密度光学聚焦的物镜，以及使用其的光学拾取器
公开(公告)号：US06430139B1
公开(公告)日：2002-08-06
申请号：US09671710
申请日：2000-09-28
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Chong-sam Chung , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Chong-sam Chung , Dong-ho Shin
IPC分类号： G11B712
CPC分类号： G11B7/13922 , G11B7/1374 , G11B2007/0006
摘要： A high-density focusing objective lens having a high numerical aperture (NA), which can be easily manufactured by an existing technique, and an optical pickup using the objective lens for high-density recording. The objective lens includes a first transmitting portion placed at a relatively near-axis region from the optical axis to divergently transmit an incident light beam; a first reflecting portion to divergently reflect the incident light beam, the first reflecting portion faces the first transmitting portion; a second reflecting portion, formed at a relatively far-axis region around the first transmitting portion that focuses and reflects the light reflected from the first reflecting portion; and a second transmitting portion, formed at a relatively far-axis region around the first reflecting portion, that refracts and transmits the light beam focused by the second reflecting portion as a peripheral light beam, wherein the maximum angle &agr; between the optical axis and the peripheral light beam satisfies the condition of 30° ≦&agr;≦65°. The optical pickup further includes the previously mentioned objective lens as a second objective lens, which is optionally placed into the optical path between a first objective lens and an optical medium. As a result, the NA of the objective lens unit can be increased up to 0.85 while the working distance d2 is maintained to be 0.2 mm.
摘要翻译：具有可以容易地通过现有技术制造的具有高数值孔径（NA）的高密度聚焦物镜和使用该物镜进行高密度记录的光学拾取器。物镜包括放置在与光轴相对靠近轴的区域的第一透射部分，以发散入射光束; 第一反射部分，其分散地反射入射光束，第一反射部分面向第一透射部分; 第二反射部，形成在第一透射部周围的相对远轴的区域，聚焦并反射从第一反射部反射的光; 以及第二透射部，形成在所述第一反射部周围的相对远轴的区域，所述第二透射部折射并透射由所述第二反射部聚焦的光束作为周边光束，其中，所述光轴与所述第二反射部之间的最大角度α 周边光束满足30°<=α<= 65°的条件。光拾取器还包括作为第二物镜的前述物镜，其可选地放置在第一物镜和光介质之间的光路中。结果，物镜单元的NA可以增加到0.85，而工作距离d2保持为0.2mm。

2. 发明授权

US06938890B2 Objective lens for high-density optical focusing and an optical disk in an optical pickup 失效
标题翻译：用于高密度光学聚焦的物镜和光学拾取器中的光盘
公开(公告)号：US06938890B2
公开(公告)日：2005-09-06
申请号：US09725879
申请日：2000-11-30
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
IPC分类号： G02B13/00 , G02B3/08 , G02B13/18 , G11B7/085 , G11B7/09 , G11B7/095 , G11B7/135 , G11B7/24 , G11B7/00
CPC分类号： G11B7/13927 , G11B7/1362 , G11B7/1374 , G11B7/1378 , G11B2007/13725
摘要： An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the light source to form a light spot on the optical disk of the objective lens. The optical pickup further includes a photodetector and an detecting-correcting unit, arranged on the optical path between the optical path changing unit and the objective lens, performing at least one of detecting the thickness of the optical disk and correcting aberration caused by thickness variations of the optical disk. The objective lens includes a first transmitting portion divergently transmitting an incident beam, where the first transmitting portion is at a relatively near-axis region from an optical axis of the objective lens. A second transmitting portion transmits the incident beam, where the second transmitting portion is arranged facing the first transmitting portion. A first reflecting portion condenses and reflects the incident beam from the first transmitting portion, where the first reflecting portion is formed around the second transmitting portion. A second reflecting portion condenses and reflects the incident beam from the first reflecting portion towards the second transmitting portion, where the second reflecting portion is formed around the first transmitting portion.
摘要翻译：光拾取器包括发射激光束的光源和改变入射光束的行进路径的光路改变单元。设置在光路改变单元和光盘之间的光路上的物镜聚焦来自光源的入射光束，以在物镜的光盘上形成光斑。光学拾取器还包括光电检测器和检测校正单元，其布置在光路改变单元和物镜之间的光路上，执行检测光盘的厚度和校正由厚度变化引起的像差中的至少一个光盘。物镜包括发射入射光束的第一透射部分，其中第一透射部分处于距离物镜的光轴的相对近轴的区域。第二发送部分透射入射光束，其中第二透射部分布置成面对第一透射部分。第一反射部分将来自第一透射部分的入射光束冷凝并反射，其中第一反射部分围绕第二透射部分形成。第二反射部分将来自第一反射部分的入射光束聚集并反射到第二透射部分，其中第二反射部分围绕第一透射部分形成。

3. 发明申请

US20050169154A1 Objective lenes for high-density optical focusing and an optical disk in an optical pickup 失效
标题翻译：用于高密度光学聚焦的物镜和光学拾取器中的光盘
公开(公告)号：US20050169154A1
公开(公告)日：2005-08-04
申请号：US11091449
申请日：2005-03-29
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
IPC分类号： G02B13/00 , G02B3/08 , G02B13/18 , G11B7/085 , G11B7/09 , G11B7/095 , G11B7/135 , G11B7/24 , G11B7/00
CPC分类号： G11B7/13927 , G11B7/1362 , G11B7/1374 , G11B7/1378 , G11B2007/13725
摘要： An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the light source to form a light spot on the optical disk of the objective lens. The optical pickup further includes a photodetector and an detecting-correcting unit, arranged on the optical path between the optical path changing unit and the objective lens, performing at least one of detecting the thickness of the optical disk and correcting aberration caused by thickness variations of the optical disk. The objective lens includes a first transmitting portion divergently transmitting an incident beam, where the first transmitting portion is at a relatively near-axis region from an optical axis of the objective lens. A second transmitting portion transmits the incident beam, where the second transmitting portion is arranged facing the first transmitting portion. A first reflecting portion condenses and reflects the incident beam from the first transmitting portion, where the first reflecting portion is formed around the second transmitting portion. A second reflecting portion condenses and reflects the incident beam from the first reflecting portion towards the second transmitting portion, where the second reflecting portion is formed around the first transmitting portion.
摘要翻译：光拾取器包括发射激光束的光源和改变入射光束的行进路径的光路改变单元。设置在光路改变单元和光盘之间的光路上的物镜聚焦来自光源的入射光束，以在物镜的光盘上形成光斑。光学拾取器还包括光电检测器和检测校正单元，其布置在光路改变单元和物镜之间的光路上，执行检测光盘的厚度和校正由厚度变化引起的像差中的至少一个光盘。物镜包括发射入射光束的第一透射部分，其中第一透射部分处于距离物镜的光轴的相对近轴的区域。第二发送部分透射入射光束，其中第二透射部分布置成面对第一透射部分。第一反射部分将来自第一透射部分的入射光束冷凝并反射，其中第一反射部分围绕第二透射部分形成。第二反射部分将来自第一反射部分的入射光束聚集并反射到第二透射部分，其中第二反射部分围绕第一透射部分形成。

4. 发明授权

US07200098B2 Objective lens for high-density optical focusing and an optical disk in an optical pickup 失效
标题翻译：用于高密度光学聚焦的物镜和光学拾取器中的光盘
公开(公告)号：US07200098B2
公开(公告)日：2007-04-03
申请号：US11091449
申请日：2005-03-29
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Dong-ho Shin
IPC分类号： G11B7/00
CPC分类号： G11B7/13927 , G11B7/1362 , G11B7/1374 , G11B7/1378 , G11B2007/13725
摘要： An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the light source to form a light spot on the optical disk of the objective lens. The optical pickup further includes a photodetector and an detecting-correcting unit, arranged on the optical path between the optical path changing unit and the objective lens, performing at least one of detecting the thickness of the optical disk and correcting aberration caused by thickness variations of the optical disk. The objective lens includes a first transmitting portion divergently transmitting an incident beam, where the first transmitting portion is at a relatively near-axis region from an optical axis of the objective lens. A second transmitting portion transmits the incident beam, where the second transmitting portion is arranged facing the first transmitting portion. A first reflecting portion condenses and reflects the incident beam from the first transmitting portion, where the first reflecting portion is formed around the second transmitting portion. A second reflecting portion condenses and reflects the incident beam from the first reflecting portion towards the second transmitting portion, where the second reflecting portion is formed around the first transmitting portion.
摘要翻译：光拾取器包括发射激光束的光源和改变入射光束的行进路径的光路改变单元。设置在光路改变单元和光盘之间的光路上的物镜聚焦来自光源的入射光束，以在物镜的光盘上形成光斑。光学拾取器还包括光电检测器和检测校正单元，其布置在光路改变单元和物镜之间的光路上，执行检测光盘的厚度和校正由厚度变化引起的像差中的至少一个光盘。物镜包括发射入射光束的第一透射部分，其中第一透射部分处于距离物镜的光轴的相对近轴的区域。第二发送部分透射入射光束，其中第二透射部分布置成面对第一透射部分。第一反射部分将来自第一透射部分的入射光束冷凝并反射，其中第一反射部分围绕第二透射部分形成。第二反射部分将来自第一反射部分的入射光束聚集并反射到第二透射部分，其中第二反射部分围绕第一透射部分形成。

5. 发明授权

US06396638B1 Optical pickup device capable of stable tracking 失效
标题翻译：能够稳定跟踪的光学拾取装置
公开(公告)号：US06396638B1
公开(公告)日：2002-05-28
申请号：US09607928
申请日：2000-06-30
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo , Dong-ho Shin
IPC分类号： G02B2714
CPC分类号： B82Y10/00 , G11B7/08564 , G11B7/1356 , G11B7/139 , G11B11/10543 , G11B11/10576 , G11B2007/13725
摘要： An optical pickup device includes a light source for generating light, a light path changing means for changing the traveling path of incident light, an objective lens for focusing incident light to form a light spot on a recording medium and having an incidence region of a predetermined size, a tracking mirror disposed on the light path between the light path changing means and the objective lens, for reflecting incident light emitted from the light source so that the light spot traces proper track positions of the recording medium, a lens unit consisting of at least two lenses which allow the light reflected from the tracking mirror to be incident on the incidence region of the objective lens, and a photo detecting unit for receiving light reflected from the recording medium and having passed through the objective lens and the light path changing means. Since the optical pickup device performs tracking by adjusting the reflection direction of incident light by means of a tracking mirror with an objective lens fixed, a tracking error signal offset due to movement of the objective lens is not generated, thereby enabling stable tracking.
摘要翻译：一种光拾取装置，包括用于产生光的光源，用于改变入射光的行进路径的光路改变装置，用于聚焦入射光以在记录介质上形成光点并具有预定的入射区域的入射区域的物镜尺寸，设置在光路改变装置和物镜之间的光路上的跟踪镜，用于反射从光源发射的入射光，使得光斑跟踪记录介质的正确轨道位置，由...组成的透镜单元允许从跟踪反射镜反射的光入射到物镜的入射区域的至少两个透镜，以及用于接收从记录介质反射并且已经通过物镜并且通过光路改变装置的光的光检测单元。由于光学拾取装置通过利用物镜固定的跟踪反射镜调节入射光的反射方向进行跟踪，所以不会产生由于物镜的移动导致的跟踪误差信号偏移，从而能够进行稳定的跟踪。

6. 发明授权

US06657942B2 Optical recording and reproducing apparatus having floating swing arm and optical disk for use therewith 失效
标题翻译：具有浮动摆臂和与其一起使用的光盘的光学记录和再现装置
公开(公告)号：US06657942B2
公开(公告)日：2003-12-02
申请号：US09778856
申请日：2001-02-08
申请人： Chul-woo Lee , Joong-eon Seo , Seung-tae Jung , Myong-do Ro , Kun-ho Cho , Dong-seob Jang , Jang-hoon Yoo , Dae-sik Kim
发明人： Chul-woo Lee , Joong-eon Seo , Seung-tae Jung , Myong-do Ro , Kun-ho Cho , Dong-seob Jang , Jang-hoon Yoo , Dae-sik Kim
IPC分类号： G11B700
CPC分类号： G11B7/1356 , G11B7/08576 , G11B7/0908 , G11B7/122 , G11B7/1362 , G11B7/1376 , G11B7/1384 , G11B7/24
摘要： A swing-arm type optical recording and reproducing apparatus and an optical disk applicable to the same. The optical disk includes a substrate having an information recording surface to record and reproduce an information signal, and a protective layer which is provided on the information recording surface and whose surface facing a slider is a flat even surface so that variations in a floating height of the slider can be reduced. The optical recording and reproducing apparatus further includes, an optical head having a light source provided at a swing arm to emit light of a predetermined wavelength; an optical path changing means provided in the optical path of the light emitted from the light source for changing the proceeding path of incident light; a collimating lens installed at the slider to preliminarily converge the light emitted from the light source and entering via the optical path changing means; an objective lens installed at the slider to converge the light which is emitted from the light source and enters via the optical path changing means to form an optical spot on the optical disk; and a photodetector to receive the light which is reflected from the optical disk and enters via the objective lens, the collimating lens, and the optical path changing means. The optical head detects an information signal and an error signal in order to reduce defocus due to variations in ambient temperature and variations in the wavelength of the light of the light source.
摘要翻译：一种摆臂式光学记录和再现装置以及可应用于其的光盘。光盘包括具有信息记录表面以记录和再现信息信号的基板，以及设置在信息记录表面上并且其面向滑块的表面是平坦均匀表面的保护层，使得浮动高度的变化滑块可以减少。光学记录和再现装置还包括：光头，其具有设置在摆臂处以发射预定波长的光的光源; 光路改变装置，设置在从光源发射的光的光路中，用于改变入射光的行进路径; 准直透镜，安装在滑块上，以预先会聚从光源射出的光并通过光路改变装置进入; 安装在滑块上的物镜，其会聚从光源射出的光，经由光路改变装置进入，以在光盘上形成光点; 以及光电检测器，用于接收从光盘反射并经由物镜，准直透镜和光路改变装置进入的光。光头检测信息信号和误差信号，以便减少由于环境温度的变化和光源的光的波长变化引起的散焦。

7. 发明授权

US06547398B2 Projection-type image display apparatus and method 有权
标题翻译：投影型图像显示装置及方法
公开(公告)号：US06547398B2
公开(公告)日：2003-04-15
申请号：US09860820
申请日：2001-05-21
申请人： Kun-ho Cho , Seung-tae Jung , Jang-hoon Yoo , Chul-woo Lee
发明人： Kun-ho Cho , Seung-tae Jung , Jang-hoon Yoo , Chul-woo Lee
IPC分类号： G03B2100
CPC分类号： G03B21/005 , H04N9/3117 , H04N13/305 , H04N13/324 , H04N13/337 , H04N13/363
摘要： A projection-type image display apparatus having a structure adapted so that the efficiency of the use of light and resolving power thereof can be enhanced. The projection-type image display apparatus includes a light source; a color separation unit separating incident rays according to predetermined wavelengths, and directing the separated rays at different angles; a lens array dividing the rays separated by the color separation unit into predetermined pixels; a driving portion driving the lens array to change the proceeding paths of the color rays; a polarizing beam splitter changing a proceeding path of incident rays depending on a direction of polarization; a reflection-type display device producing a color image using the rays entering via the polarizing beam splitter, and reflecting the color image toward the polarizing beam splitter; and a projection lens unit magnifying and projecting an incident image onto a screen. In addition, the projection-type image display apparatus may comprise. Alternative designs include a transmission-type display device in place of the reflection-type display device and a deflector changing the proceeding paths of the individual color rays separated by the color separation unit instead of the driving portion.
摘要翻译：一种投影型图像显示装置，其具有能够提高光的使用效率和分辨能力的结构。投影型图像显示装置包括光源; 分离单元，根据预定波长分离入射光线，并以不同的角度引导分离的光线; 透镜阵列，将由分色单元分离的光线划分成预定的像素; 驱动所述透镜阵列以改变所述彩色光线的前进路径的驱动部; 偏振分束器根据偏振方向改变入射光线的行进路径; 反射型显示装置，使用通过偏振分束器进入的光线产生彩色图像，并将彩色图像反射向偏振分束器; 以及将投影图像放大并投影到屏幕上的投影透镜单元。此外，投影型图像显示装置可以包括。替代设计包括代替反射型显示装置的透射型显示装置和改变由分色单元分离的各个色光的行进路径而不是驱动部分的偏转器。

8. 发明授权

US06400666B1 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US06400666B1
公开(公告)日：2002-06-04
申请号：US09635520
申请日：2000-08-09
申请人： Jang-hoon Yoo , Kun-ho Cho , Yong-hoon Lee , Seok-jung Kim , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo
发明人： Jang-hoon Yoo , Kun-ho Cho , Yong-hoon Lee , Seok-jung Kim , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo
IPC分类号： G11B7095
CPC分类号： G11B7/1353 , G11B7/0956
摘要： An optical pickup device includes a light source for generating and emitting light, optical path changing means for changing a proceeding path of incident light, an objective lens for focusing incident light on a recording medium which has a recording surface where information is recorded and a protection layer, at the side where light is input, for protecting the recording surface, a main photodetector for detecting the information signal and/or an error signal by receiving the light reflected by the recording surface of the recording medium and passing through the objective lens and the optical path changing means, and an inclination detecting unit for detecting inclination of the recording medium by receiving the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium. Thus, since the inclination of the recording medium is detected using the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium, without an additional tilt sensor, the number of parts is reduced and the structure of the device is simplified.
摘要翻译：一种光拾取装置，包括用于产生和发光的光源，用于改变入射光的行进路径的光路改变装置，用于将入射光聚焦在具有记录信息的记录表面的记录介质上的物镜和保护层，在输入光的一侧用于保护记录表面;主光电检测器，用于通过接收由记录介质的记录表面反射并穿过物镜的光检测信息信号和/或误差信号;以及光路改变装置和倾斜检测单元，用于通过接收从光源发射并被保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度。因此，由于使用从光源发出并由保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度，所以没有附加的倾斜传感器，部件的数量减少，并且简化了设备的结构。

9. 发明授权

US06646976B1 Optical pickup apparatus capable of reducing cross talk by adjacent tracks and a method therefor 失效
标题翻译：能够减少相邻轨道串扰的光拾取装置及其方法
公开(公告)号：US06646976B1
公开(公告)日：2003-11-11
申请号：US09461290
申请日：1999-12-15
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Seung-tae Jung , Chul-woo Lee , In-sik Park , Dong-ho Shin
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Seung-tae Jung , Chul-woo Lee , In-sik Park , Dong-ho Shin
IPC分类号： G11B700
CPC分类号： G11B7/005 , G11B7/131 , G11B7/1353 , G11B20/22 , G11B2220/2579
摘要： An optical pickup apparatus which reduces cross talk by adjacent tracks. The optical pickup apparatus divides light reflected from an optical recording medium as a spot into center and side portions defined with respect to the radial direction of the recording medium and provides electrical signals corresponding to the reflected light in divided form. An operation unit multiplies signals corresponding to the side portions by an operation constant, adds the multiplication results and the detected signal of the center portion, and outputs an information signal of a main track with reduced cross talk by adjacent tracks in real time. The optical efficiency is sufficient that recording of an information signal can be performed with the optical pickup.
摘要翻译：一种减少相邻轨道串扰的光拾取装置。光学拾取装置将从光记录介质反射的光作为点分成中心和相对于记录介质的径向限定的侧部，并且以分开的形式提供对应于反射光的电信号。操作单元将与侧面部分对应的信号乘以运算常数，将相乘结果和检测到的中心部分的信号相加，并实时地通过相邻轨道输出具有减小的串扰的主轨道的信息信号。光学效率足以利用光学拾取器进行信息信号的记录。

10. 发明授权

US07116627B2 Compatible optical pickup device using a single light source 有权
标题翻译：兼容光学拾取装置使用单个光源
公开(公告)号：US07116627B2
公开(公告)日：2006-10-03
申请号：US09899501
申请日：2001-07-06
申请人： Jang-hoon Yoo , Seung-tae Jung , Ho-cheol Lee , Ju-hyung Lee , Chul-woo Lee , Young-il Kim , Hyun-seob Choi , Sang-beom Hong
发明人： Jang-hoon Yoo , Seung-tae Jung , Ho-cheol Lee , Ju-hyung Lee , Chul-woo Lee , Young-il Kim , Hyun-seob Choi , Sang-beom Hong
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： A compatible optical pickup device includes a single light source to emit a light having a wavelength longer than 650 nm, an objective lens having a near axis area, a ring type annular lens area, and a far axis area to focus the light to form light spots suitable for a first relatively thin optical disk and a second relatively thick optical disk to form a first light spot having an FWHM (full width at half maximum) of 0.72 μm or less for the first optical disk and a second light spot having an FWHM of 0.8 μm or more for the second optical disk, an optical path changer to change a proceeding path of incident light, and a photodetector to receive light reflected by the optical disk and having passed through the objective lens and the optical path changer and to detect an information signal and/or an error signal.
摘要翻译：兼容的光学拾取装置包括发射波长长于650nm的光的单个光源，具有近轴区域的物镜，环形环形透镜区域和远轴区域，以聚焦光以形成光适用于第一相对较薄的光盘和第二相对厚的光盘的光点，以形成第一光盘具有FWHM（半高全宽）为0.72μm或更小的第一光点，以及具有FWHM的第二光点对于第二光盘为0.8μm以上的光路改变器，改变入射光的行进路径的光路改变器，以及光接收器，用于接收由光盘反射并经过物镜和光路变换器的光，并检测信息信号和/或误差信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式