Zoom and focus control method and system
    4.
    发明授权
    Zoom and focus control method and system 失效
    变焦和对焦控制方法和系统

    公开(公告)号:US06714731B2

    公开(公告)日:2004-03-30

    申请号:US09792318

    申请日:2001-02-23

    IPC分类号: G03B1700

    CPC分类号: G02B7/04

    摘要: A focus lens and a zoom lens group having a first zoom lens and a second zoom lens are controlled separately from one another in an internal-focus camera. The positions of the focus lens and the second zoom lens in the zoom lens group are tracked, and are controlled to approach no closer to one another than a minimum safe distance to avert collisions between the focus lens and the second zoom lens.

    摘要翻译: 具有第一变焦透镜和第二变焦透镜的对焦透镜和变焦透镜组在内部对焦照相机中被彼此分离地控制。 跟踪聚焦透镜和第二变焦透镜在变焦透镜组中的位置,并且被控制为不与最小安全距离彼此更靠近,以避免对焦透镜和第二变焦透镜之间的碰撞。

    Camera with adjustable strobe energy

    公开(公告)号:US06546203B2

    公开(公告)日:2003-04-08

    申请号:US09886448

    申请日:2001-06-21

    申请人: Gregory V Hofer

    发明人: Gregory V Hofer

    IPC分类号: G03B1503

    摘要: A camera adjusts its strobe energy to achieve proper exposure of a photograph. The adjustment method uses two trial exposures of the scene to be photographed. One trial exposure is taken without the camera strobe using only ambient illumination. The other trial exposure is taken using the camera strobe at a pre-set energy level. Pixels that appear as saturated in the ambient-only trial exposure are discounted in the determination of the strobe energy for the final photograph. This method properly exposes scenes which themselves contain bright light sources such as lamps or light fixtures.