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1. 发明授权

US5741056A Projecting head mechanism of a projecting machine 失效
标题翻译：投影机的投影头机构
公开(公告)号：US5741056A
公开(公告)日：1998-04-21
申请号：US839076
申请日：1997-04-23
申请人： Tom Liu
发明人： Tom Liu
IPC分类号： G03B21/132 , G03B21/16 , G03B21/14
CPC分类号： G03B21/16 , G03B21/132 , Y10S353/06
摘要： A projecting head mechanism of a projecting machine adapted to project an image generated by a non-reflective document is disclosed. A thermo-conducting metal piece is installed in the projecting head mechanism and the internal surface area of a projecting mirror is coated with silicon compound for evenly and repidly distributing the heat generated by the light beam received by the projecting mirror over the surface area of the projecting mirror, so that the heat will not be concentrated on a spot to damage the projecting machine.
摘要翻译：公开了一种投影机的投影头机构，适用于投影由非反射文件产生的图像。热敏金属片安装在突出头机构中，并且投影镜的内表面区域涂覆有硅化合物，用于均匀地将由投影镜接收的光束产生的热量均匀地分布在突出的镜子，使得热量不会集中在一个点上以损坏投影机。

2. 发明授权

US4023893A Lamp and lens retrofit assembly for overhead projector 失效
标题翻译：高架投影仪灯和镜头改装组件
公开(公告)号：US4023893A
公开(公告)日：1977-05-17
申请号：US700656
申请日：1976-06-28
申请人： Roger T. Hebert , John A. Pappas , Richard J. Shea
发明人： Roger T. Hebert , John A. Pappas , Richard J. Shea
IPC分类号： G03B21/132 , G03B21/20 , G03B21/14 , F21V33/00
CPC分类号： G03B21/20 , G03B21/132 , Y10S353/06
摘要： A retrofit assembly for replacing a lens-containing lamp in an overhead projector. The assembly comprises a quartz-halogen lamp, having an internal reflector and an enlarged base removably mounted in the projector, and a lens holding bracket removably mounted in the projector in alignment with the lamp. The bracket is resiliently pivoted toward the lamp and has a tab for striking the lamp base to retain the lens at a predetermined distance from the lamp.
摘要翻译：用于更换高架投影仪中的含镜头的灯的改装组件。组件包括石英卤素灯，其具有可拆卸地安装在投影仪中的内部反射器和扩大基座，以及可拆卸地安装在投影仪中与灯对准的透镜保持支架。支架弹性地朝灯头枢转，并且具有用于撞击灯座的突出部，以将透镜保持在距离灯的预定距离处。

3. 发明授权

US3644030A Light source system 失效
标题翻译：光源系统
公开(公告)号：US3644030A
公开(公告)日：1972-02-22
申请号：US3644030D
申请日：1969-07-08
申请人： RICOH KK
发明人： FUKUSHIMA YOSHIO
IPC分类号： G03B21/20 , G03B21/28
CPC分类号： G03B21/28 , G03B21/20 , G03B21/2006 , G03B21/60 , Y10S353/06
摘要： A light source system for a projection system wherein a reflecting mirror having an observation window formed through a center portion thereof is inclined in front of a projector and an object illuminated by light beam from a ring-shaped light source or ring-shaped light source image is projected upon a reflex reflecting screen through said reflecting mirror so that the projected image may be viewed through the observation window.
摘要翻译：一种用于投影系统的光源系统，其中具有通过其中心部分形成的观察窗的反射镜在投影仪前方倾斜，并且由来自环形光源或环形光源图像的光束照射的物体通过所述反射镜投影在反射反射屏幕上，使得投影图像可以通过观察窗观看。

4. 发明授权

US06443577B1 Overhead projection having a friction secured adjustable cantilevered head 失效
标题翻译：具有摩擦固定可调节悬臂头的间距突起
公开(公告)号：US06443577B1
公开(公告)日：2002-09-03
申请号：US09738073
申请日：2000-12-15
申请人： Dwight G. Baldwin
发明人： Dwight G. Baldwin
IPC分类号： G03B2114
CPC分类号： G03B21/132 , Y10S353/06
摘要： An overhead projector including a stage assembly, a post extending from the stage assembly and an optical projection head assembly suspended above the stage assembly by the post in a cantilever arrangement, the optical head assembly having a weight W. The head assembly includes a post retaining assembly having a collar fitted around the post, the collar having at least two friction points interacting with the post, the interaction having a coefficient of friction &mgr;. The weight W and the cantilever arrangement create torsional forces, the at least two friction points being positioned to transmit the torsional forces onto the post creating a friction force Ff. The coefficient of friction of the interaction between each of the at least two friction points and the post is selected such that absent other forces the friction force is at least sufficient to maintain the head assembly at a static position with respect to the post.
摘要翻译：一种高架投影仪，包括台架组件，从舞台组件延伸的立柱和通过柱以悬臂布置悬挂在舞台组件上方的光学投影头组件，光学头组件具有重物W.头组件包括柱保持组件具有围绕柱安装的套环，所述套环具有与柱相互作用的至少两个摩擦点，所述相互作用具有摩擦系数μ。重量W和悬臂布置产生扭转力，所述至少两个摩擦点被定位成将扭转力传递到柱上，产生摩擦力Ff。选择至少两个摩擦点和柱之间的相互作用的摩擦系数，使得如果不存在其它的力，摩擦力至少足以将头部组件保持在相对于柱的静止位置。

5. 发明授权

US4863263A Overhead projector 失效
标题翻译：难搞的项目
公开(公告)号：US4863263A
公开(公告)日：1989-09-05
申请号：US155619
申请日：1988-02-12
申请人： Nobuo Kanai
发明人： Nobuo Kanai
IPC分类号： G03B21/132
CPC分类号： G03B21/132 , Y10S353/06
摘要： A overhead projector including a projection lens and a deflection mirror for directing the light projected from the lens toward a screen, both the lens and the mirror being individually pivotally movable about horizontal axes parallel to each other and to the original support surface of a stage. The lens is pivotally movable in accordance with variations in the angle of inclination of the mirror and is also pivotally movable with the focusing operation of the lens by an interlocking mechanism. The lens is brought to a proper pivotally moved position by the mechanism according to the angle of elevation and to the focusing operation to project images free of trapezoidal distortion and less of focus.
摘要翻译：一种高架投影仪，包括投影透镜和偏转镜，用于将从透镜投影的光引导到屏幕，透镜和反射镜可以围绕彼此平行的水平轴和台的原始支撑表面单独地枢转运动。透镜可以根据反射镜的倾斜角度的变化而可枢转地运动，并且通过联锁机构的透镜的聚焦操作也可以枢转地移动。镜头通过机构根据仰角和聚焦操作被带到适当的转动位置，以投射没有梯形失真和较少焦距的图像。

6. 发明授权

US4353627A Over-head projector with partial projection device 失效
标题翻译：具有部分投影设备的超头投影机
公开(公告)号：US4353627A
公开(公告)日：1982-10-12
申请号：US194827
申请日：1980-10-07
申请人： Takashi Maemori
发明人： Takashi Maemori
IPC分类号： G03B21/132 , G03B1/48 , G03B21/14
CPC分类号： G03B21/132 , Y10S353/03 , Y10S353/05 , Y10S353/06
摘要： An over head projector has a standard projection lens for projecting the whole view of an original image and a partial projection lens for projecting a part of the original image in enlarged scale. One of the projection lenses is selectively brought to a projection position for projecting the original image onto a projection screen. A stage for supporting the original image is vertically movable and is moved up and down when the projection lens is changed. The selection of the projection lens and the vertical movement of the stage are associated with each other so that the original image is always at a proper position with respect to the focal length of the selected projection lens.
摘要翻译：一顶投影机具有用于投影原始图像的整个视图的标准投影透镜和用于以放大比例投影原始图像的一部分的部分投影透镜。其中一个投影透镜选择性地被带到用于将原始图像投影到投影屏幕上的投影位置。用于支撑原始图像的平台可垂直移动，并且当投影透镜改变时上下移动。投影透镜的选择和平台的垂直运动彼此相关联，使得原始图像总是处于相对于所选择的投影透镜的焦距的适当位置。

7. 发明授权

US3752575A Overhead projector 失效
标题翻译：难搞的项目
公开(公告)号：US3752575A
公开(公告)日：1973-08-14
申请号：US3752575D
申请日：1972-10-16
申请人： RICOH KK
发明人： ATAKA H
IPC分类号： G03B21/132 , G03B21/14 , G03B21/28
CPC分类号： G03B21/132 , Y10S353/03 , Y10S353/06
摘要： An improved overhead projector capable of employing a smaller sized reflecting mirror, thereby making the projector compact in size, wherein a Fresnel condenser lens system, which serves as the stage or is disposed adjacent to a stage, comprises at least two Fresnel lenses having different widths and/or different focal lengths so that the light beams refracted by the different Fresnel lenses may be made incident at different angles upon the projection lens and thus upon the surface of the reflecting mirror, particularly the upper half portion, thereby permitting the reflecting mirror to be shortened. Individual light sources may be used for respective Fresnel lenses so that they may be moved closer together further decreasing the size of the projector.
摘要翻译：一种改进的高架投影仪，其能够采用较小尺寸的反射镜，从而使投影机尺寸更小，其中用作舞台或邻近舞台的菲涅耳聚光透镜系统包括至少两个具有不同宽度的菲涅尔透镜和/或不同的焦距，使得由不同菲涅尔透镜折射的光束可以以不同的角度入射到投影透镜上，并因此在反射镜的表面，特别是上半部分上，从而允许反射镜缩短。各个光源可以用于各自的菲涅尔透镜，使得它们可以更靠近地移动，进一步减小投影仪的尺寸。

8. 发明授权

US3191491A Head for overhead projectors 失效
标题翻译：头顶投影机
公开(公告)号：US3191491A
公开(公告)日：1965-06-29
申请号：US16192861
申请日：1961-12-26
申请人： CHARLES BESELER COMPANY
发明人： JOSEPH PIGNONE , FIELD PHILIP M
IPC分类号： G03B21/132
CPC分类号： G03B21/132 , Y10S353/03 , Y10S353/06

9. 发明授权

US06170954B2 Overhead projector of the under mirror type 失效
标题翻译：下镜式投影机
公开(公告)号：US06170954B2
公开(公告)日：2001-01-09
申请号：US09473526
申请日：1999-12-28
申请人： Mutsuo Kai , Kazuhiro Sukenari
发明人： Mutsuo Kai , Kazuhiro Sukenari
IPC分类号： G03B2114
CPC分类号： G03B21/132 , Y10S353/03 , Y10S353/06
摘要： An overhead projector of the under mirror type includes a projection head assembly supported on a column so as to be located over a stage on the top of a housing and so as to be pivotable between a standing position and a stowed position. A projection lens is fixed on a lens frame and a reflecting mirror is fixed on a mirror plate. Both the lens frame and the mirror plate are rotatably mounted on a single shaft further mounted on the head body of the projection head assembly so that angles of the lens and the mirror are increased and decreased. The lens frame is rotated by a self-weight of the lens in such a direction that the angle of the lens is decreased, when the projection head assembly assumes the standing position. A link lever interconnects the lens frame and the mirror plate so that the angles of them are adjusted so that the angle of the lens doubles that of the mirror. A mirror locking element locks the mirror at a position where the angle of the mirror is maximum. An angle adjusting knobbed bolt is mounted on the head body so as to be turnable and immovable back and forth. An angle adjusting piece is screwed in the knobbed bolt so as to be unturnable and movable back and forth. The mirror plate has an end departed from the angle adjusting piece when the mirror plate is rotated in such a direction that the angle of the mirror is increased. The end of the mirror plate engages the angle adjusting piece when the mirror frame is rotated in such a direction that the angle of the mirror is decreased.
摘要翻译：底镜型高架投影仪包括支撑在柱上的投影头组件，以便位于壳体顶部的平台上，并且能够在竖立位置和收起位置之间枢转。投影透镜固定在透镜框上，反射镜固定在镜面板上。透镜框和镜板都可旋转地安装在进一步安装在投影头组件的头本体上的单个轴上，使得透镜和反射镜的角度增大和减小。当投影头组件呈现站立位置时，透镜框架以透镜角度减小的方向由透镜的自重旋转。连杆将透镜框和镜板相互连接，使得它们的角度被调节，使得透镜的角度加倍于镜子的角度。镜子锁定元件将镜子锁定在镜子角度最大的位置。角度调节旋钮螺栓安装在头体上，以便可转动和不可移动。角度调节片旋入旋钮螺栓，使其不可翻转，可前后移动。当镜板沿着反射镜的角度增加的方向旋转时，镜板的端部离开角度调节片。当反射镜框架以反射镜的角度减小的方向旋转时，镜板的端部与角度调节片接合。

10. 发明授权

US3547530A Overhead projector 失效
公开(公告)号：US3547530A
公开(公告)日：1970-12-15
申请号：US3547530D
申请日：1968-11-12
申请人： BELL TELEPHONE LABOR INC
发明人： POOLE KENNETH M
IPC分类号： G03B21/132
CPC分类号： G03B21/132 , Y10S353/03 , Y10S353/06

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