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    • 41. 发明授权
    • Connectible locking mechanism
    • 可锁定机构
    • US5588769A
    • 1996-12-31
    • US536172
    • 1995-09-29
    • Paul Graefenhain
    • Paul Graefenhain
    • G02B7/04G02B15/00G02B21/02G02B21/24G05G1/00G05G5/06
    • G05G5/06G02B21/025Y10T403/59Y10T403/591
    • A connectible locking mechanism sets defined magnifications in a continuously operating zoom system of a microscope. The mechanism has a drive unit for setting the zoom, a locking disk fixedly connected to and provided axially on a drive shaft of the drive unit and a disk-shaped locking spring arranged fixedly to an instrument of the microscope. The locking disk has defined grooves arranged side by side. Arranged between the locking spring and the locking disk is a ball and a locking slider which is provided with a recess. The ball is positioned in the recess of the locking slider and is movable into and out of engagement with the grooves of the locking disk through a sliding motion of the locking slider.
    • 可连接的锁定机构在显微镜的连续操作的变焦系统中设定定义的放大倍数。 该机构具有用于设置变焦的驱动单元,与驱动单元的驱动轴固定地连接并轴向设置的锁定盘和固定地布置在显微镜的仪器上的盘形锁定弹簧。 锁定盘具有并排布置的限定凹槽。 在锁定弹簧和锁定盘之间布置有球和设置有凹部的锁定滑块。 球定位在锁定滑块的凹部中,并且通过锁定滑块的滑动运动可移动到与锁定盘的凹槽接合。
    • 42. 发明授权
    • Optical instrument with a continuously adjustable zoom
    • 光学仪器具有连续可调的变焦
    • US5499066A
    • 1996-03-12
    • US975929
    • 1993-04-21
    • John W. FarmerGeorge SmithMalcolm GinJohn F. H. BrookDaryl R. WhiteBrian A. SeeIan Powell
    • John W. FarmerGeorge SmithMalcolm GinJohn F. H. BrookDaryl R. WhiteBrian A. SeeIan Powell
    • A61B3/12G02B15/00
    • A61B3/1208
    • An optical instrument for indirectly observing an object includes a first lens system for producing a first image of the object, and an adjustable second lens system for producing a second image of the object. The second lens system is continuously adjustable between a first position wherein the second image has maximum magnification and/or a minimum area of view, and a second position wherein the second image is of a minimum magnification and/or a maximum area of view. In one aspect of the invention, the second lens system is a zoom lens system having two substantially fixed conjugate planes. In another aspect of the invention, the instrument defines a folded optical path through the lens systems which includes a generally U-shaped portion so as, in use, to reduce the separation of the observer and the observed object.
    • PCT No.PCT / AU91 / 00387 Sec。 371日期:1993年4月21日 102(e)日期1993年4月21日PCT 1991年8月26日PCT公布。 出版物WO92 / 03085 日期:1992年3月5日。用于间接观察物体的光学仪器包括用于产生物体的第一图像的第一透镜系统和用于产生物体的第二图像的可调节的第二透镜系统。 第二透镜系统在其中第二图像具有最大放大倍数和/或最小视区的第一位置和第二位置之间连续可调,其中第二图像具有最小放大倍数和/或最大视野。 在本发明的一个方面,第二透镜系统是具有两个基本上固定的共轭平面的变焦透镜系统。 在本发明的另一方面,仪器限定通过透镜系统的折叠光路,其包括大致U形的部分,以便在使用中减小观察者和被观察物体的分离。
    • 43. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US5479224A
    • 1995-12-26
    • US149657
    • 1993-12-22
    • Masato YasugakiOsamu KonumaKumi Kikuchi
    • Masato YasugakiOsamu KonumaKumi Kikuchi
    • G02B15/00G02B27/00G02B27/01G02B27/02H04N5/64G02B27/14
    • G02B27/0172G02B27/017G02B2027/0132G02B2027/0154G02B2027/0156G02B2027/0161G02B2027/0178
    • A head-mounted display apparatus wherein an image displayed on an image display device is projected on an observer's eyeball, which is designed so that the displayed image can be observed at a desired angle of view and at a desired magnification by making the projection magnification changeable. The head-mounted image display apparatus includes an image display device (11) for displaying an image, and a projection optical system for projecting the image displayed on the image display device (11) onto an observer's eyeball. The projection optical system is composed of a first relay optical system (12), a second relay optical system (13), and an ocular optical system (14). The second relay optical system (13), which is an afocal optical system, is rotatable about an axis (16) perpendicular to the optical axis so that the projection magnification is changed in three steps by the rotation of the second relay optical system (13).
    • 一种头戴式显示装置,其中,将显示在图像显示装置上的图像投影在观察者的眼球上,其被设计成使得可以以期望的视角和期望的倍率观察所显示的图像,使投影倍率可变 。 头戴式图像显示装置包括用于显示图像的图像显示装置(11)和用于将显示在图像显示装置(11)上的图像投影到观察者的眼球上的投影光学系统。 投影光学系统由第一中继光学系统(12),第二中继光学系统(13)和眼睛光学系统(14)组成。 作为无焦光学系统的第二中继光学系统(13)可以围绕垂直于光轴的轴线(16)旋转,使得通过第二中继光学系统(13)的旋转三次地改变投影倍率 )。
    • 46. 发明授权
    • Zoom lens system
    • 变焦镜头系统
    • US4993814A
    • 1991-02-19
    • US298555
    • 1989-01-17
    • Kazuyoshi Hata
    • Kazuyoshi Hata
    • G02B15/177G02B15/00
    • G02B15/177
    • A zoom lens system comprises from object side to image side, a front lens unit of a negative refractive power and a rear lens unit of a positive refractive power with a variable air space, which changes in the zooming operation, formed between the front and rear lens units. The rear lens unit consists of a first biconvex lens element, a second biconcave lens element and a third biconvex lens element. Futher, an aperture diaphragm, which is arranged between the front and rear lens units or at the image side next to the rear lens unit, is stationary on the optical axis of the lens system in the zooming operation. In a 2-components zoom lens system having a negative lens unit and a positive lens unit from object side according to the present invention, a zoom ratio of about 2 and a sufficiently long back focal length can be obtained in spite of a small number of lens elements. Moreover, cost reduction, compactness and a high performance in the whole lens system including the aperture diaphragm and a lens barrel are obtainable.
    • 变焦透镜系统包括从物体侧到像侧,具有负折光力的前透镜单元和具有可变空气空间的正折射力的后透镜单元,其变焦操作形成在前后之间 镜头单元。 后透镜单元由第一双凸透镜元件,第二双凹透镜元件和第三双凸透镜元件组成。 另外,设置在前后透镜单元之间或靠近后透镜单元的像侧的孔径光阑在变焦操作中在透镜系统的光轴上是静止的。 在根据本发明的具有负透镜单元和来自物体侧的正透镜单元的双分量变焦透镜系统中,可以获得约2的变焦比和足够长的后焦距,尽管数量少 透镜元件。 此外,可以获得包括孔径光阑和镜筒在内的整个透镜系统中的成本降低,紧凑性和高性能。
    • 47. 发明授权
    • Drive device for a varifocal lens system
    • 变焦镜头系统的驱动装置
    • US4950061A
    • 1990-08-21
    • US287851
    • 1988-12-21
    • Ikuya TsurukawaKunihisa YamaguchiKosaku Sawabe
    • Ikuya TsurukawaKunihisa YamaguchiKosaku Sawabe
    • G02B7/10G02B15/00
    • G02B7/10
    • A device for driving a varifocal lens, includes a first group frame supporting the first group of lenses therein in a movable manner for focussing and supported with the lens barrel inside said fixed frame movably in parallel with said optical axis, a second group frame supporting the second group of lenses therein in a fixed manner and supported with the first group frame inside the first group frame movably in parallel with said optical axis, at least three driver screw members disposed within the fixed frame in parallel with optical axis, at least three driver gear members held in mesh with the driver screw members respectively, and a drive unit for driving the driver gear members to thereby move the lens barrel frame and the first group frame by a predetermined amount respectively.
    • 一种用于驱动变焦透镜的装置,包括以可移动方式支撑其中的第一组透镜的第一组框架,用于聚焦并且与所述光轴平行移动地固定在所述固定框架内的透镜筒支撑;第二组框架, 第二组透镜,以固定方式固定并且与第一组框架内的第一组框架一起可移动地与所述光轴平行地支撑,至少三个驱动螺钉构件,其与光轴平行设置在固定框架内,至少三个驱动器 分别与驱动螺丝部件啮合的齿轮部件和用于驱动驱动齿轮部件从而分别使镜筒和第一组框架移动预定量的驱动单元。
    • 49. 发明授权
    • Zoom lens
    • 变焦镜头
    • US4792215A
    • 1988-12-20
    • US569466
    • 1984-01-09
    • Shigetada Sato
    • Shigetada Sato
    • G02B13/04G02B15/16G02B15/177G02B15/00
    • G02B15/177
    • A zoom lens of a compact size and good performance comprises a front diverging lens group and a rear converging lens group which are mechanically movable for variable power, the front diverging lens comprising a first lens of negative meniscus which is convex toward an object, a second negative lens, and a third lens of positive meniscus which is convex toward the object, the rear converging lens comprising a fourth positive lens, a fifth positive lens, a sixth negative lens, and a seventh positive lens, there being an aperture disposed more closely than the rear group to the object and movable with the rear group.
    • 尺寸紧凑,性能优异的变焦透镜包括机械可移动用于可变功率的前发散透镜组和后会聚透镜组,前发散透镜包括朝向物体凸出的负弯液面的第一透镜,第二透镜组 负透镜和朝向物体凸出的正弯月面的第三透镜,后会聚透镜包括第四正透镜,第五正透镜,第六负透镜和第七正透镜,存在更密切布置的孔 比后组对物体和后组可移动。