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    • 1. 发明授权
    • Zoom finder
    • ZOOM FINDER
    • US5052787A
    • 1991-10-01
    • US667369
    • 1991-03-12
    • Saburo Sugawara
    • Saburo Sugawara
    • G03B13/12G02B13/18G02B15/00G02B15/14G02B15/17G02B23/14G02B25/00G03B23/14
    • G02B23/14G02B13/18G02B15/17G02B23/145
    • A zoom finder can be provided which ensures high magnification and satisfactory view-finding without the need to increase the size. A positive lens which is movable along the optical axis is provided closest to the object side. A negative lens which is movable along the optical axis is provided on the eye-side of the positive lens. Zooming may be accomplished by the zoom finder by moving these lenses along the optical axis. A third lens is provided on the eye-side of the negative lens. The third lens is a negative lens which is fixed and has an eye-side surface which serves as a half-mirror. On the other side of this third lens is a parallel planar plate having an optical frame on one surface which indicates the imaging range. The parallel planar plate may be moved in a direction perpendicular to the optical axis in order to compensate for parallax. A fourth lens which is a fixed positive lens is closest to the eye-side.
    • 可以提供可以确保高放大率和令人满意的观察发现的变焦取景器,而不需要增加尺寸。 沿着光轴可移动的正透镜最靠近物体侧设置。 可以沿着光轴移动的负透镜设置在正透镜的眼睛侧。 变焦可以通过沿着光轴移动这些透镜来实现变焦。 第三透镜设置在负透镜的眼睛侧。 第三透镜是固定的具有作为半透半反镜的眼侧表面的负透镜。 在该第三透镜的另一侧是具有指示成像范围的一个表面上的光学框架的平行平板。 平行平板可以在垂直于光轴的方向上移动,以补偿视差。 固定的正透镜的第四透镜最靠近眼睛侧。
    • 2. 发明授权
    • Slide projector
    • 幻灯机
    • US4274719A
    • 1981-06-23
    • US72607
    • 1979-09-05
    • Charles-Louis Rochat
    • Charles-Louis Rochat
    • G03B23/00G03B23/14G03B23/18G03B23/02G03B21/14
    • G03B23/18Y10S353/01
    • A series of slides are placed in a vertical loader and are movable alternatively into respective ones of two projection positions. Each slide is moved laterally of the loader by a carriage, then pushed to the projection position by a push rod. During projection the following slide in the loader is similarly moved to the other projection position. After its projection, the first slide is brought back by a further push rod to its carriage and then is moved by the carriage to be deposited in a receptacle and be replaced by a new slide which will be moved into the same projection position.
    • 一系列滑块放置在垂直装载机中,并且可替换地移动到两个投影位置中的相应的一个。 每个滑块通过滑架从装载机侧面移动,然后通过推杆推到突出位置。 在投影期间,装载机中的下一个滑块同样移动到另一个投影位置。 在其突出之后,第一滑块通过另一个推杆带回其滑架,然后被托架移动以被沉积在容器中,并由新的滑块代替,该滑块将被移动到相同的突出位置。
    • 5. 发明授权
    • Magazine
    • 杂志
    • US3764206A
    • 1973-10-09
    • US3764206D
    • 1971-01-05
    • HONEYWELL INC
    • BLECHER S
    • G03B23/04G03B23/14
    • G03B23/04
    • A stack type magazine for a slide projector having a casing containing two spaced apart partitions that divide the casing into three sections, namely, a slide supply section into which a stack of slides can be placed that are to be moved to a preview position, a second dummy section into which each successive slide that has been previewed can be moved before it is returned to a projecting position in the projector and a slide take-up section into which each successive slide can be moved after it has been projected.
    • 一种用于滑动投影仪的堆叠式杂志,其具有包含两个间隔开的分隔件的壳体,所述两个间隔开的分隔件将壳体分成三个部分,即,可以放置要移动到预览位置的一叠滑动件的滑动供应部分, 第二虚拟部分,其中预览的每个连续的幻灯片在其返回到投影仪中的突出位置之前可以移动到其中,以及在投影之后每个连续的幻灯片可以移动到的幻灯片收起部分。