Electronic flash device
    1.
    发明授权
    Electronic flash device 失效
    电子闪光装置

    公开(公告)号:US4485336A

    公开(公告)日:1984-11-27

    申请号:US470954

    申请日:1983-03-01

    IPC分类号: G03B15/05 G03B33/00 H05B41/32

    CPC分类号: G03B15/05 G03B2215/0557

    摘要: In an electronic flash device for use in a still camera, a calculation circuit means calculates a ratio of the amounts of light to be emitted by a plurality of flash light tubes on the basis of color temperature information and control circuit means controls the emission of light of the respective flash light tubes in such a manner that the ratio of light amount emitted from the respective flash light tubes corresponds to the ratio calculated by the calculation circuit means.

    摘要翻译: 在用于静态照相机的电子闪光装置中,计算电路装置根据色温信息计算由多个闪光灯管发射的光量的比例,并且控制电路装置控制光的发射 以使从各个闪光灯管发射的光量的比率对应于由计算电路装置计算出的比率的各个闪光灯管。

    Exposure meter
    3.
    发明授权
    Exposure meter 失效
    曝光仪

    公开(公告)号:US4182573A

    公开(公告)日:1980-01-08

    申请号:US824950

    申请日:1977-08-15

    CPC分类号: G01J1/44

    摘要: An exposure meter for use in photography which includes means for measuring brightness at a plurality of places in a scene to be measured for exposure, means for calculating frequency distribution of the brightness which divides brightness value into many stages and counts frequency of occurrence of brightness at each of the stages, and means for calculating, under designated conditions, position whereat film latitude is to be present within the width of the brightness distribution.

    摘要翻译: 一种用于摄影的曝光仪,包括用于测量待测量的场景中的多个亮度的亮度的装置,用于计算将亮度值分为多个阶段的亮度的频率分布,并计算亮度发生频率的装置 每个级,以及用于在指定条件下计算在亮度分布的宽度内存在电影纬度的位置的装置。

    Exposure meter
    4.
    发明授权
    Exposure meter 失效
    曝光仪

    公开(公告)号:US4176955A

    公开(公告)日:1979-12-04

    申请号:US820034

    申请日:1977-07-28

    CPC分类号: G03B17/20 G01J1/44

    摘要: An exposure meter provides a display indicating the brightness of selected portions of a scene to be photographed. In one embodiment, a photometering block including a plurality of light sensitive elements is employed, and there is an automatic fixed display indicating the brightness level of the brightest and the darkest portions of the objective scene together with a display of a median value. Another embodiment employs a spot photometering device with only one light sensitive element, and a display of the brightness level of different portions of the scene selected by the photographer.

    摘要翻译: 曝光表提供指示要拍摄的场景的所选部分的亮度的显示。 在一个实施例中,使用包括多个光敏元件的测光块,并且存在自动固定显示,其指示目标场景的最亮和最暗部分的亮度级别以及中值的显示。 另一个实施例采用仅具有一个光敏元件的点测光装置,以及由摄影者选择的场景的不同部分的亮度水平的显示。