公开(公告)号：US4795252A

公开(公告)日：1989-01-03

申请号：US53715

申请日：1987-05-26

Applicant: Henry Kyhl

Inventor： Henry Kyhl

IPC: G03B21/132 ,  G03B21/00

CPC classification number: G03B21/132 ,  Y10S353/03 ,  Y10S353/05 ,  Y10S353/06

Abstract: A portable overhead projector has a top surface which slopes downwardly from the rear wall to the front wall and includes stops on the top surface adjacent to the front wall for preventing a transparency from sliding off the top surface during use and to preset the distance of the leading edge of the transparency from the bottom edge of the protecting wall.

Abstract translation: 便携式高架投影仪具有从后壁向前壁向下倾斜的顶表面，并且包括在与前壁相邻的顶表面上的止动件，用于防止在使用期间透明体从顶面滑出并预设距离 从保护墙的底部边缘的透明的前缘。

公开(公告)号：USD307030S

公开(公告)日：1990-04-03

申请号：US36965

申请日：1987-04-10

Applicant: Henry Kyhl

Designer： Henry Kyhl

公开(公告)号：US5025320A

公开(公告)日：1991-06-18

申请号：US404077

申请日：1989-09-07

Applicant: Henry Kyhl

Inventor： Henry Kyhl

IPC: H04N1/04 ,  H04N1/195

CPC classification number: H04N1/19594 ,  H04N1/04 ,  H04N1/195 ,  H04N2201/043

Abstract: A compact podium, of substantially conventional apperance, conceals therein a video camera and optical system. Illustrative materials, inserted into a slot at the speaker's waist, fall within the field of the camera after reflection from two mirrors. A two-way mirror serves as one reflector in the optical system and also as the sloped portion of the podium. The speaker looks through the two-way mirror and sees his illustrative material which is simultaneously displayed as a video picture. There is an unobstructed line of sight between the presenter and his audience.

Abstract translation: 具有基本上常规外观的紧凑的讲台，在其中隐藏摄像机和光学系统。 插入扬声器腰部的插槽中的说明性材料在从两个反射镜反射后落入相机的视野内。 双向镜用作光学系统中的一个反射器，并且还作为讲台的倾斜部分。 扬声器通过双向镜子看到他的说明材料，同时显示为视频图像。 主持人和观众之间有一个无阻碍的视线。

公开(公告)号：US4449800A

公开(公告)日：1984-05-22

申请号：US461164

申请日：1983-01-26

Applicant: Vincent E. De Longis ,  Henry Kyhl

Inventor： Vincent E. De Longis ,  Henry Kyhl

IPC: G03B21/132 ,  G03B21/30

CPC classification number: G03B21/132 ,  Y10S353/03

Abstract: A portable overhead projector comprises a rectangular box-like housing having an open top and four side walls, a projecting lamp disposed in the housing and a planar fresnel lens. The fresnel lens is mounted in the housing for pivotal movement from a storage position wherein the fresnel lens is adjacent the open top of the housing to an operative position wherein the fresnel lens is spaced above the open top of the housing and the projecting lamp. A projecting head assembly is mounted to the housing when the fresnel lens is in the operative position to dispose the projecting head assembly thereabove and a cover is connectable to the housing for covering the fresnel lens when in the storage position.

Abstract translation: 便携式高架投影仪包括具有开口顶部和四个侧壁的矩形盒状壳体，设置在壳体中的突出灯和平面菲涅尔透镜。 菲涅尔透镜安装在壳体中，用于从存储位置枢转运动，其中菲涅耳透镜邻近壳体的开口顶部到达操作位置，其中菲涅耳透镜在壳体的敞开的顶部和投影灯之间间隔开。 当菲涅尔透镜处于操作位置以将突出的头部组件设置在上方时，突出的头部组件被安装到壳体，并且当处于存储位置时，盖可连接到壳体以覆盖菲涅尔透镜。

公开(公告)号：US4728184A

公开(公告)日：1988-03-01

申请号：US53714

申请日：1987-05-26

Applicant: Henry Kyhl

Inventor： Henry Kyhl

IPC: G03B21/132 ,  G03B21/28

CPC classification number: G03B21/132 ,  Y10S353/05

Abstract: A device for supporting a transparency on a top surface of an overhead projector is foldable from a compact unit into a structure having a planar base with an indentation for receiving a transparency and legs which are pivotally mounted on the base and rest on the top of an overhead projector to position the transparency at a specific spacing therefrom. Other pivotal elements position a lens at a given distance above the base so that light from the overhead projector will pass through the transparency and project it on a remote screen without white light showing around the sides of the transparency.

Abstract translation: 用于支撑高架投影仪的顶表面上的透明度的装置可从紧凑单元折叠成具有平坦基部的结构，该平面基部具有用于接收透明度的凹口和可枢转地安装在基部上并搁置在基座上 高架投影仪将透明度定位在与之相距的特定间距。 其他枢轴元件将透镜定位在基座上方给定距离处，使得来自高架投影仪的光将穿过透明体并将其投射在远程屏幕上，而不会在透明体的侧面周围显示白光。

公开(公告)号：USD281506S

公开(公告)日：1985-11-26

申请号：US490036

申请日：1983-04-29

Applicant: Vincent E. DeLongis ,  Henry Kyhl

Designer： Vincent E. DeLongis ,  Henry Kyhl