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    • 31. 发明授权
    • Hand held system for close-range underwater photography composing and
focusing
    • 手持系统用于近距离水下摄影组合和聚焦
    • US5142299A
    • 1992-08-25
    • US776630
    • 1991-10-15
    • Bradley S. Braun
    • Bradley S. Braun
    • G02B7/32G03B3/00G03B15/035G03B17/08
    • G02B7/32G03B15/035G03B17/08G03B3/00
    • A system for composing and focusing a hand-held underwater camera system includes a first light source and a second light source which each emit a beam of visible light through the water. The two visible non-laser light beams converge at a light intersection within the field of view and the depth of field of the lens. The camera system and a photography subject, such as a fish, are moved with respect to each other until the two light beams, which converge at a beam intersection, converge on the photography subject to indicate that the photography is in focus and within the picture area. A mount holds the lights in relation to the lens, and the mount is readily removable for use on hand-held underwater cameras for close-up and macro photography within fifteen inches.
    • 用于组合和聚焦手持式水下摄像机系统的系统包括第一光源和第二光源,每个发射通过水的可见光束。 两个可见的非激光束在视场和透镜的景深的光交叉处会聚。 照相机系统和诸如鱼的摄影对象相对于彼此移动,直到在光束交叉处会聚的两个光束会聚在摄影对象上,以指示摄影被聚焦并且在图像内 区。 安装座相对于镜头固定灯,并且安装座很容易拆卸,用于手持式水下摄像机,可在15英寸内进行特写和微距拍摄。