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公开(公告)号：US20080137040A1
公开(公告)日：2008-06-12
申请号：US12021877
申请日：2008-01-29
申请人： Ernesto M. Rodriguez , Patricia M. Hughes , William E. Haushalter , Kai Chang Lu , Steven G. Saxe
发明人： Ernesto M. Rodriguez , Patricia M. Hughes , William E. Haushalter , Kai Chang Lu , Steven G. Saxe
IPC分类号： G03B21/14
摘要： A front projection display device having a projection module and a docking station. The docking station has a base. Further, the docking station can include an extendable arm attached to the base. The projection module contains an optical engine. The optical engine includes an illumination system, an imaging system, and a wide-angle projection lens. The optical engine outputs an image at a half field angle of at least 45°. The projected image has substantially no distortion and requires substantially no keystone correction.
摘要翻译： 一种具有投影模块和对接站的前投影显示装置。 对接站有一个基地。 此外，对接站可以包括附接到基座的可伸展臂。 投影模块包含光学引擎。 光学引擎包括照明系统，成像系统和广角投影透镜。 光学引擎以至少45°的半视场角输出图像。 投影图像基本上没有失真，并且基本上不需要梯形失真校正。
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公开(公告)号：US6109767A
公开(公告)日：2000-08-29
申请号：US883446
申请日：1997-06-26
申请人： Ernesto M. Rodriguez
发明人： Ernesto M. Rodriguez
CPC分类号： G03B21/16
摘要： A light trap for a projector, such as an integrated LCD projector, is provided for placement in ventilation channels to prevent escape of light through the channels while allowing free flow of cooling fluid through the channels. The light trap is constructed of material having a honeycomb-like structure, with conduits in the light trap being preferably disposed obliquely between the light source and the duct opening. The light trap may be coated or treated to increase absorption of visible and infrared radiation. A light trap according to this invention not only prevents escape of extraneous light from the projector's ventilation openings, but it assists in controlling the heat load generated by the light source, and it provides less resistance to air flow than does a louvered panel that is typically used to cover a ventilation opening in a projector thus reducing the amount of noise associated with the ventilation system.
摘要翻译： 提供投影仪的光阱，例如集成的LCD投影仪，用于放置在通风通道中，以防止光通过通道逸出，同时允许冷却液自由流过通道。 光阱由具有蜂窝状结构的材料构成，光阱中的导管优选地倾斜地设置在光源和导管开口之间。 光阱可以被涂覆或处理以增加可见光和红外辐射的吸收。 根据本发明的光阱不仅防止外部光从投影仪的通风口逸出，而且有助于控制由光源产生的热负荷，并且它比通常的百叶窗板提供较小的空气流阻力 用于覆盖投影仪中的通风口，从而减少与通风系统相关联的噪音量。
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公开(公告)号：US5465127A
公开(公告)日：1995-11-07
申请号：US401311
申请日：1995-03-15
IPC分类号： G03B21/132
CPC分类号： G03B21/132 , Y10S353/06
摘要： An improved overhead projector head is provided that reduces the vibration that can occur in an overhead projector head that is used to project images from an LCD panel placed on the stage of the projector. The improvements comprise adding a mounting plate between the support arm and the head bracket. The mounting plate is cantilevered from the support arm, and the head bracket is supported by spacers placed near the end of the mounting plate that is remote from the support arm. In alternative embodiments, the head bracket may be divided into two pieces separated by foam or other vibration damping material, or a conterweight may be added to the head assembly behind the support arm.
摘要翻译： 提供了一种改进的高架投影头，其减少了用于投影来自放置在投影仪的台上的LCD面板的图像的高架投影仪头部的振动。 这些改进包括在支撑臂和头托架之间增加安装板。 安装板从支撑臂悬臂，并且头托架由靠近安装板的远离支撑臂的端部放置的间隔件支撑。 在替代实施例中，头托架可以被分成由泡沫或其它减震材料隔开的两个部件，或者可以将相应的重量加到支撑臂后面的头部组件中。
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公开(公告)号：US4978218A
公开(公告)日：1990-12-18
申请号：US486971
申请日：1990-03-01
IPC分类号： G03B21/132
CPC分类号： G03B21/132 , Y10S353/04
摘要： A portable overhead projector having a folding arm. The arm and a torque member are pivotally attached to the projector head, forming a four bar linkage. When the arm is moved from an upright, operative position to a storage position, the projector head rotates so as to be flush with the base of the projector, making the projector more compact for storage. An adjustment mechanism is also provided to automatically open and close a mirror which is attached to the projector head, simplifying the set up procedure of the overhead projector.
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