Distance measuring system
    141.
    发明授权
    Distance measuring system 失效
    距离测量系统

    公开(公告)号:US5963309A

    公开(公告)日:1999-10-05

    申请号:US138621

    申请日:1993-10-18

    CPC分类号: G01S17/46 G01S17/87

    摘要: A distance measuring system of the active type wherein a distance ranging from a short distance to a great distance can be measured with a high degree of accuracy in accordance with a ratio between outputs of two light receiving elements. The system comprises light emitting means which emits light twice to an object, three or more light receiving elements, and selecting means which selects output signals of different pairs of the light receiving elements when the light emitting means emits light for the first and second times for measurement of distances within short and long distance ranges, respectively. The selected output signals in each pair are compared with each other to take a ratio between them, and distances are calculated based on the ratios thus obtained. Finally, a distance to the object is determined based on the calculated two distances. Where the distance measuring system is incorporated in a camera, the lens of the camera is actuated in accordance with the distance value measured by the system.

    摘要翻译: 根据两个光接收元件的输出之间的比率,可以高精度地测量从短距离到远距离的距离的距离测量系统。 该系统包括对物体发光两次的发光装置,三个或更多个光接收元件,以及当发光装置第一次和第二次发光时,选择不同对的光接收元件的输出信号的选择装置 分别测量短距离和远距离范围内的距离。 将每对中选择的输出信号彼此进行比较以获得它们之间的比例,并且基于由此获得的比率来计算距离。 最后,基于计算出的两个距离来确定距离物体的距离。 在距离测量系统结合在照相机中的情况下,照相机的透镜根据系统测量的距离值来启动。

    Camera having an auto zoom function
    147.
    发明授权
    Camera having an auto zoom function 失效
    相机具有自动缩放功能

    公开(公告)号:US5291233A

    公开(公告)日:1994-03-01

    申请号:US471522

    申请日:1990-01-29

    IPC分类号: G02B7/10 G03B13/00

    CPC分类号: G02B7/102

    摘要: A camera having an auto zoom function includes: a taking lens for photographing an object; a distance measuring device for measuring a distance to the object; a magnification setting device for setting a photographing magnification for the object; and a focal length calculator for calculating a focal length of the taking lens to obtain the photographing magnification set with respect to the distance to the object. Auto zoom operation is carried out by automatic movement of the taking lens so that the focal length of the taking lens may be equal to the calculated focal length.

    摘要翻译: 具有自动变焦功能的相机包括:拍摄对象的拍摄镜头; 距离测量装置,用于测量到物体的距离; 用于设定被摄体的拍摄倍率的倍率设定装置; 以及焦距计算器,用于计算拍摄镜头的焦距以获得相对于到达物体的距离设置的拍摄倍率。 通过拍摄镜头的自动移动进行自动变焦操作,使得拍摄镜头的焦距可以等于计算出的焦距。

    Camera having a zoom lens system
    148.
    发明授权
    Camera having a zoom lens system 失效
    相机具有变焦镜头系统

    公开(公告)号:US5140360A

    公开(公告)日:1992-08-18

    申请号:US778742

    申请日:1991-10-18

    IPC分类号: G02B7/10

    CPC分类号: G02B7/102

    摘要: A camera comprises a taking lens having a zoom lens system, zoom lens driver for performing a zooming operation by driving the taking lens, first parameter detector for detecting a subject distance from a photographing scene, second parameter detector detecting light source data from the photographing scene, and controlling circuit for controlling the zoom lens driver so that the taking lens has a focal length automatically obtained on the basis of the subject distance and the light source data. The camera gives a photographer in advantage when, for example, a baby is photographed in the whole image plane at a relatively short distance indoors, or a subject such as the whole body of a child on a ground is photographed in the whole image plane at a relatively long distance outdoors.

    摘要翻译: 相机包括具有变焦透镜系统的拍摄镜头,用于通过驱动拍摄镜头执行缩放操作的变焦镜头驱动器,用于检测拍摄场景的被摄体距离的第一参数检测器,从拍摄场景检测光源数据的第二参数检测器 以及用于控制变焦镜头驱动器的控制电路,使得拍摄镜头具有根据被摄体距离和光源数据自动获得的焦距。 例如,当在室内相对短距离的整个图像平面拍摄婴儿时,相机给予摄影者,或者在整个图像平面上拍摄诸如地面上的孩子的整个身体的对象 户外比较长的距离

    Convertible car body structure
    149.
    发明授权
    Convertible car body structure 失效
    敞篷车身结构

    公开(公告)号:US5033789A

    公开(公告)日:1991-07-23

    申请号:US501255

    申请日:1990-03-29

    IPC分类号: B60J1/18 B60J7/14 F16D65/12

    摘要: A convertible car body structure which includes a pair of side structures, a front windshield structure and a rear structure, the body structure having a top opening and a back window opening. A roof panel and a back window panel are provided for covering the top opening and the back window opening of the car body structure, respectively. The roof panel is connected at the rear end portion swingably with the front end portion of the back window panel so that the roof panel can be folded on the back window panel. The back window panel is connected at the rear end portion swingably with the rear body structure. The rear body structure is formed with a concave space for receiving the roof panel and the back window panel after the roof panel has been folded on the back window panel. A concealing cover panel is provided on the rear body structure for covering the concave space. The cover panel is swingably connected at a rear end portion with the rear body structure adjacent to a rear end portion of the concave space in the rear body structure. A locking mechanism is provided for retaining the concave cover panel on the rear structure so that fluttering of the cover panel is prevented. The locking mechanism includes a striker provided on the cover panel, a latch member provided on the rear structure for engagement with the striker and a driving mechanism for the latch member.

    摘要翻译: 一种敞篷车体结构,其包括一对侧结构,前挡风玻璃结构和后结构,所述主体结构具有顶部开口和后窗开口。 提供了一种顶盖板和后窗板,用于分别覆盖车体结构的顶部开口和后窗开口。 屋顶板的后端部与后窗板的前端部可摆动地连接,使得顶板可以折叠在后窗板上。 后窗面板在后端部与后体结构可摆动连接。 后车身结构形成有用于在车顶板已经折叠在后窗板上之后用于接收屋顶板和后窗板的凹形空间。 隐蔽盖板设置在后体结构上,用于覆盖凹形空间。 盖板在后端部与后体部结构可摆动地连接,后体部结构邻近后体部结构中的凹形空间的后端部。 提供了用于将凹面盖板保持在后部结构上的锁定机构,从而防止了盖板的颤动。 锁定机构包括设置在盖板上的撞针,设置在后结构上用于与撞针接合的闩锁构件和用于闩锁构件的驱动机构。

    Piezoelectric actuating device
    150.
    发明授权
    Piezoelectric actuating device 失效
    压电驱动装置

    公开(公告)号:US4884090A

    公开(公告)日:1989-11-28

    申请号:US327393

    申请日:1989-03-22

    CPC分类号: G03B9/14 H01L41/094

    摘要: A piezo-electric actuating device employing a piezo-electric element as an actuating member wherein a sufficient amount of movement of a driven member such as a shutter of a camera can be assured. The piezo-electric element of the device includes a first piezo-electric member which is contracted when a first voltage of a first polarity is applied thereacross and which is elongated when a second voltage of a second polarity opposite to the first polarity is applied thereacross, and a second piezo-electric member which is contracted when the second voltage is applied thereacross and which is elongated when the first voltage is applied thereacross. The piezo-electric member is deformed to move a driven member in one or the other when the first or second voltage is applied thereto, and the first and second piezo-electric members have a higher yield strength against deformation thereof by application of the first voltage than by application of the second voltage.

    摘要翻译: 使用压电元件作为致动构件的压电致动装置,其中可以确保诸如照相机的快门的从动构件的足够量的运动。 该装置的压电元件包括​​第一压电元件,当在其上施加第一极性的第一电压并且当与第一极性相反的第二极性的第二电压施加到其上时,该压电元件被拉长, 以及第二压电构件,其在施加所述第二电压并且当跨越所述第一电压施加时被拉长而收缩。 当施加第一或第二电压时,压电构件变形以使从动构件彼此移动,并且第一和第二压电构件通过施加第一电压而具有较高的抗变形能力 比施加第二电压。