会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 43. 发明授权
    • Automatic focusing device
    • 自动对焦装置
    • US4382665A
    • 1983-05-10
    • US267447
    • 1981-05-27
    • Mitsuo EguchiYoshimi KikuchiNobuyuki Ichino
    • Mitsuo EguchiYoshimi KikuchiNobuyuki Ichino
    • G03B13/36G02B7/34G02B7/36H04N5/232G03B3/10G01J1/44H04N5/26
    • G02B7/36
    • An automatic focusing device in which the intensity distributions of the images of an object which are formed by light beams passing through different portions of an optical system in a photographing device are detected as video signals. A correlation output is obtained from the video signals so that the focusing condition is detected from the peak position of the correlation output. When the peak position is not one for focalization, a drive direction signal is delivered to drive the optical system towards the focusing position. A low contrast detecting circuit is provided in which is counted how many times the correlation output becomes higher than a predetermined level in one focusing condition detecting operation, and when the count value reaches a predetermined value, the drive direction signal is made ineffected, so as to prevent the occurrence of a hunting phenomenon with the optical system.
    • 一种自动聚焦装置,其中通过光照射装置中的光学系统的不同部分的光束形成的物体的图像的强度分布被检测为视频信号。 从视频信号获得相关输出,使得从相关输出的峰值位置检测聚焦条件。 当峰值位置不是用于聚焦的位置时,传送驱动方向信号以驱动光学系统朝向聚焦位置。 提供一种低对比度检测电路,其中在一次聚焦状态检测操作中将相关输出变得高于预定电平多少次,并且当计数值达到预定值时,使驱动方向信号受到影响,因此 以防止光学系统发生振荡现象。
    • 44. 发明授权
    • Automatic focusing device
    • 自动对焦装置
    • US4381523A
    • 1983-04-26
    • US224464
    • 1981-01-12
    • Mitsuo EguchiMasahito YoshidaYoshifumi KatoNobuyuki IchinoYoshimi Kikuchi
    • Mitsuo EguchiMasahito YoshidaYoshifumi KatoNobuyuki IchinoYoshimi Kikuchi
    • G03B13/36G02B7/28G02B7/34H04N5/232H04N3/26
    • H04N5/23212
    • An automatic focusing device comprises a detector for detecting distributions of the images of an object which are formed by two light beams passing through two different points in a photographing optical system and for providing corresponding video signals. The video signals are processed to obtain an output signal representative of a relative positional relation between the video signals for use in establishing the optical system moving direction and the distance of movement of the focusing position, or to determine only the direction of movement of the optical system so that the optical system is moved in the direction thus determined to the focusing position. The automatic focusing operation can be accomplished without using movable members other than the photographing lens of the optical system, or in the case of using a movable member, the focusing operation can be achieved with high accuracy by operating the movable member only once.
    • 自动对焦装置包括检测器,用于检测通过拍摄光学系统中的两个不同点的两个光束形成的对象的图像分布并提供对应的视频信号。 处理视频信号以获得表示用于建立光学系统移动方向和聚焦位置的移动距离的视频信号之间的相对位置关系的输出信号,或仅确定光学器件的移动方向 系统,使得光学系统沿着这样确定的方向移动到聚焦位置。 可以在不使用除了光学系统的拍摄镜头之外的可动构件的情况下实现自动聚焦操作,或者在使用可移动部件的情况下,可以通过仅操作可移动部件一次来实现高精度的聚焦操作。