-
公开(公告)号：US08223254B2
公开(公告)日：2012-07-17
申请号：US12601637
申请日：2008-05-27
申请人： Norikazu Katsuyama , Kenichi Honjo
发明人： Norikazu Katsuyama , Kenichi Honjo
IPC分类号： H04N5/232
CPC分类号： H04N5/23209 , G02B7/36 , G03B13/36 , G03B17/14 , H04N5/23212 , H04N5/23293 , H04N2101/00
摘要： A camera system includes an interchangeable lens and a camera body. The camera body includes an imaging unit, a contrast detection unit, a defocusing amount detection unit, and a body microcomputer. The contrast detection unit is configured to detect a contrast value from an image signal of a subject acquired by the imaging unit, and is configured to detect the focal state of an optical image on the basis of the contrast value. The defocusing amount detection unit is configured to detect the focal state of the optical image by phase difference detection method. The body microcomputer is configured to select either the contrast detection unit or the defocusing amount detection unit on the basis of lens information on the interchangeable lens side.
摘要翻译： 相机系统包括可互换镜头和照相机主体。 相机主体包括成像单元，对比度检测单元，散焦量检测单元和主体微计算机。 对比度检测单元被配置为从由成像单元获取的被摄体的图像信号中检测对比度值，并且被配置为基于对比度值来检测光学图像的聚焦状态。 散焦量检测单元被配置为通过相位差检测方法检测光学图像的焦点状态。 身体微机被配置为基于可互换镜头侧上的镜头信息来选择对比度检测单元或散焦量检测单元。
-
公开(公告)号：US6040987A
公开(公告)日：2000-03-21
申请号：US53300
申请日：1998-04-01
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A DC--DC converter unit includes a power conversion transformer, a switching device for switching a DC voltage supplied to a primary winding of the power conversion transformer, a rectifying circuit for synchronously rectifying a AC voltage generated on a secondary winding of the power conversion transformer so that a DC voltage is obtained, and a reset circuit for resetting excitation energy which has been stored in the power conversion transformer by an on-operation of the switching device, so that the voltage which is switched has a square waveform.
摘要翻译： DC-DC转换器单元包括电力变换变压器，用于切换提供给电力变换变压器的初级绕组的直流电压的开关装置，用于同步整流在电力转换变压器的次级绕组上产生的交流电压的整流电路 从而获得DC电压，以及复位电路，用于通过开关器件的接通操作来复位存储在电力变换变压器中的激励能量，使得切换的电压具有方波形。
-
公开(公告)号：US09294658B2
公开(公告)日：2016-03-22
申请号：US13696990
申请日：2011-07-28
CPC分类号： H04N5/2254 , G02B7/102 , G03B3/10 , G03B2205/0046
摘要： A lens barrel includes a first zoom/focus lens group and a second zoom/focus lens group configured to respectively vary a focal distance and imaging distance by moving in an optical axis, a first actuator configured to drive the first zoom/focus lens group, and a second actuator configured to drive the second zoom/focus lens group.
摘要翻译： 镜筒包括：第一变焦/聚焦透镜组和第二变焦/聚焦透镜组，其被配置为通过在光轴上移动来分别改变焦距和成像距离;第一致动器，被配置为驱动第一变焦/聚焦透镜组; 以及构造成驱动第二变焦/聚焦透镜组的第二致动器。
-
14.发明授权Image pickup apparatus, interchangeable lens unit, camera body, and ultrasonic motor driving apparatus 有权图像拾取装置，可互换镜头单元，照相机主体和超声波马达驱动装置公开(公告)号：US08228389B2
公开(公告)日：2012-07-24
申请号：US12338216
申请日：2008-12-18
CPC分类号： H04N5/23212 , G02B7/08 , G03B3/00 , H04N5/2254
摘要： An image pickup apparatus of the present invention is an image pickup apparatus including an ultrasonic motor 35 that moves a focus lens 24, and further including a correction control part 100 that operates the ultrasonic motor 35 under a predetermined condition. The correction control part 100 is capable of executing a correction process by measuring a frequency characteristic of an applied voltage at the time of operating the ultrasonic motor 35 at a predetermined rotation speed, comparing the frequency characteristic with a preset reference frequency characteristic, and correcting the frequency characteristics on the basis of a difference between the frequency characteristic and the reference frequency characteristic so as to calculate a correction frequency characteristic. Accordingly, even when the frequency characteristic of the ultrasonic motor varies due to wear of the ultrasonic motor and mechanical components coupled thereto, a stable drive can be maintained over a long time.
摘要翻译： 本发明的图像拾取装置是包括移动聚焦透镜24的超声波马达35的图像拾取装置，并且还包括在预定条件下操作超声波马达35的校正控制部100。 校正控制部100能够通过以预定的转速测量超声波马达35的运转时的施加电压的频率特性，将频率特性与预先设定的基准频率特性进行比较来进行校正处理， 基于频率特性和参考频率特性之间的差异来计算校正频率特性。 因此，即使当超声波马达的频率特性由于超声波马达的磨损和与其耦合的机械部件而变化时，可以长时间保持稳定的驱动。
-
公开(公告)号：US20130070124A1
公开(公告)日：2013-03-21
申请号：US13696992
申请日：2011-07-28
CPC分类号： G02B7/102
摘要： A lens barrel comprises a first zoom/focus lens group and a second zoom/focus lens group configured to respectively vary a focal distance and imaging distance by moving in an optical axis, a first actuator configured to drive the first zoom/focus lens group, a second actuator configured to drive the second zoom/focus lens group, and a drive controller configured to independently control the first actuator and the second actuator. The drive controller is configured to wobble the first zoom/focus lens group by reciprocating only the first zoom/focus lens group out of the first and second zoom/focus lens groups in a optical axis direction.
摘要翻译： 镜筒包括第一变焦/聚焦透镜组和被配置为通过在光轴上移动来分别改变焦距和成像距离的第二变焦/聚焦透镜组，构造成驱动第一变焦/聚焦透镜组的第一致动器， 配置成驱动第二变焦/聚焦透镜组的第二致动器以及被配置为独立地控制第一致动器和第二致动器的驱动控制器。 驱动控制器被配置为通过仅使第一和第二变焦/聚焦透镜组在光轴方向上往复移动第一变焦/聚焦透镜组而摆动第一变焦/聚焦透镜组。
-
公开(公告)号：US08988594B2
公开(公告)日：2015-03-24
申请号：US13696992
申请日：2011-07-28
CPC分类号： G02B7/102
摘要： A lens barrel comprises a first zoom/focus lens group and a second zoom/focus lens group configured to respectively vary a focal distance and imaging distance by moving in an optical axis, a first actuator configured to drive the first zoom/focus lens group, a second actuator configured to drive the second zoom/focus lens group, and a drive controller configured to independently control the first actuator and the second actuator. The drive controller is configured to wobble the first zoom/focus lens group by reciprocating only the first zoom/focus lens group out of the first and second zoom/focus lens groups in a optical axis direction.
摘要翻译： 镜筒包括第一变焦/聚焦透镜组和被配置为通过在光轴上移动来分别改变焦距和成像距离的第二变焦/聚焦透镜组，构造成驱动第一变焦/聚焦透镜组的第一致动器， 配置成驱动第二变焦/聚焦透镜组的第二致动器以及被配置为独立地控制第一致动器和第二致动器的驱动控制器。 驱动控制器被配置为通过仅使第一和第二变焦/聚焦透镜组在光轴方向上往复移动第一变焦/聚焦透镜组而摆动第一变焦/聚焦透镜组。
-
公开(公告)号：US20130050568A1
公开(公告)日：2013-02-28
申请号：US13696990
申请日：2011-07-28
CPC分类号： H04N5/2254 , G02B7/102 , G03B3/10 , G03B2205/0046
摘要： A lens barrel includes a first zoom/focus lens group and a second zoom/focus lens group configured to respectively vary a focal distance and imaging distance by moving in an optical axis, a first actuator configured to drive the first zoom/focus lens group, and a second actuator configured to drive the second zoom/focus lens group.
摘要翻译： 镜筒包括：第一变焦/聚焦透镜组和第二变焦/聚焦透镜组，其被配置为通过在光轴上移动来分别改变焦距和成像距离;第一致动器，被配置为驱动第一变焦/聚焦透镜组; 以及构造成驱动第二变焦/聚焦透镜组的第二致动器。
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.021 秒)
