首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
OPTICAL SYSTEM, OPTICAL PICKUP APPARATUS, AND OPTICAL DISK APPARATUS FOR EXTRACTING SIGNAL BEAMS
摘要
An optical system for efficiently extracting plural signal beams from a bundle of rays reflected from a multilayer optical disc.
申请公布号
EP2054888(B1)
申请公布日期
2011.07.27
申请号
EP20070792690
申请日期
2007.08.13
申请人
RICOH COMPANY, LTD.
发明人
OGATA, TETSUYA
分类号
G11B7/135;G11B7/14
主分类号
G11B7/135
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Mach-Zehnder modulator with backplane voltage equalization
Display device and a method of manufacturing the same
Optical modulator and optical modulation device with zigzag electrode and waveguide arm alignment
Eyewear with exchangeable temples housing a radio frequency transceiver
Interface using eye tracking contact lenses
Wide angle and high resolution tiled head-mounted display device
Optical lens assembly, image capturing device and mobile terminal
Wide-angle photographic lens system enabling correction of distortion
Optical device having a substrate and a laser unit that emits light into the substrate
Managed fiber connectivity systems
Light coupling formation in a waveguide layer
Diffuse reflecting optical construction
Transmitting electric power using electromagnetic waves
Advanced steering tool system, method and apparatus
Position calculating method and position calculating device
Applications for geographically coded access points
Magnetic sensor with reduced effect of interlayer coupling magnetic field
XMR-sensor and method for manufacturing the XMR-sensor
Method, system and computer-readable media for measuring impedance of an energy storage device
System and method for assessing faulty power-line insulator strings