CN101620363B - Imaging and projecting system for video conference - Google Patents
Imaging and projecting system for video conference Download PDFInfo
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- CN101620363B CN101620363B CN2008100399321A CN200810039932A CN101620363B CN 101620363 B CN101620363 B CN 101620363B CN 2008100399321 A CN2008100399321 A CN 2008100399321A CN 200810039932 A CN200810039932 A CN 200810039932A CN 101620363 B CN101620363 B CN 101620363B
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- projection screen
- rear projection
- camera
- catoptron
- reflector
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Abstract
The invention relates to an imaging and projecting system for a video conference, which consists of a camera, a projector, a transmission reflector and a rear projection screen. The camera is arranged behind the rear projection screen, the reflector is arranged behind the rear projection screen, the reflecting surface of the first reflector is positioned in the emergent optical path of the camera and the incident optical path of the rear projection screen, the transmission reflector is arranged in front of the rear projection screen, the camera is arranged below the transmission reflector and the camera is positioned in the reflective emergent optical path of the transmission reflector. The imaging and projecting system utilizes the rear projection screen to reproduce images of persons in the video signals from the remote conference, reduces the distance between the projector and the rear projection screen by the reflector, reflects the front images of the conference attendees to the camera by the transmission reflector and then transfers the front images to the remote conference. The invention realizes short-distance image pick-up of the camera, guarantees the pick-up quality, reduces the requirements of equipment on the area of the conference room, and enhances the feeling of conference attendees for face-to-face communication and interaction.
Description
Technical field:
The present invention relates to physical field, relate in particular to optics, particularly a kind of imaging and projecting system that is used for video conference.
Background technology:
In traditional meeting room type video conference television system, during for fear of pickup image on personage's sight line lower deviation cause personage's deformation of image, video camera need be arranged on centre in the face of the participant, and maintenance and personage's sight line level, could realize stronger interactivity so need enough big meeting room, and rear projection screen and participant's distance is far away, and effect of meeting is poor.
Summary of the invention:
The object of the present invention is to provide a kind of imaging and projecting system that is used for video conference, described this a kind of imaging and projecting system that is used for video conference will solve the meeting room type video conference television system pickup image and the unfavorable technical matters of projected image effect of prior art.
A kind of imaging and projecting system that is used for video conference of the present invention, by video camera, projector, the Transflective mirror, first catoptron, second catoptron and rear projection screen constitute, wherein, described Transflective mirror is arranged on the place ahead of rear projection screen, described first catoptron is arranged on the front lower place of rear projection screen, described video camera is arranged on the below of rear projection screen, the position for video camera is in the reflection emitting light path of Transflective mirror, described projector is arranged on the rear of rear projection screen, described second catoptron is arranged on the rear of rear projection screen, and the reflecting surface of described second catoptron is arranged in the input path of the emitting light path and the rear projection screen of projector.
Further, described position for video camera is in the emitting light path of first catoptron and Transflective mirror.
Further, the transmittance of described Transflective mirror is 10%, and reflecting rate is 35%.
Principle of work of the present invention is: personnel participating in the meeting's front image is mapped to the catoptron that is arranged on projection screen screen front lower place by the Transflective mirror reversal, again in the video camera under it reflexes to projection screen, can realize that video camera closely makes a video recording.By first catoptron, can reduce the distance between video camera and the personnel participating in the meeting.The vision signal in meeting-place, a distant place is sent to projector by network, is shown by the rear-projection mode by projector.Second catoptron can reduce the distance between projector and the rear projection screen, and size is equal to very behind the personnel's image regeneration in the vision signal of meeting-place, a distant place, has simulated the live telecast of face-to-face meetings preferably.The personnel participating in the meeting sees through the Transflective mirror and watches the distant place on the rear projection screen to understand field picture.
The present invention compares with prior art, and its effect is actively with tangible.The present invention utilizes the personnel's image in the vision signal of rear projection screen regeneration meeting-place, a distant place, utilizes the distance between catoptron minimizing projector and the rear projection screen, and the front image that utilizes Transflective mirror reflection personnel participating in the meeting is delivered to meeting-place, a distant place again to video camera.Can realize the closely shooting of video camera, guarantee pickup quality, reduce the requirement of equipment, strengthen participant's sensation that talks face to face and interactivity the meeting room area.
Description of drawings:
Fig. 1 is a kind of structural representation that is used for the imaging and projecting system of video conference of the present invention.
Embodiment:
Embodiment 1:
As shown in Figure 1, a kind of imaging and projecting system that is used for video conference of the present invention, by video camera 1, projector 2, Transflective mirror 5, first catoptron 6, second catoptron 4 and rear projection screen 3 constitute, it is characterized in that: described Transflective mirror 5 is arranged on the place ahead of rear projection screen 3, described first catoptron 6 is arranged on the front lower place of rear projection screen 3, described video camera 1 is arranged on the below of rear projection screen 3, video camera 1 is arranged in the reflection emitting light path of Transflective mirror 5, described projector 2 is arranged on the rear of rear projection screen 3, described second catoptron 4 is arranged on the rear of rear projection screen 3, and the reflecting surface of described second catoptron 4 is arranged in the input path of the emitting light path and the rear projection screen 3 of projector 2.
Further, described video camera 1 is arranged in the emitting light path of first catoptron 6 and Transflective mirror 5.
Further, the transmittance of described Transflective mirror 5 is 10%, and reflecting rate is 35%.
The course of work of present embodiment is: the vision signal in meeting-place, a distant place is sent to projector 2 by network, is shown by the rear-projection mode by projector 2.Second catoptron 4 can reduce the distance between projector 2 and the rear projection screen 3, and size is equal to very behind the personnel's image regeneration in the vision signal of meeting-place, a distant place, has simulated the live telecast of face-to-face meetings preferably.The personnel participating in the meeting sees through Transflective mirror 5 and watches the distant place on the rear projection screen 3 to understand field picture, personnel participating in the meeting's front image reflexes in the catoptron 6 that is arranged on rear projection screen 3 front lower places by Transflective mirror 5, reflection through catoptron 6 enters in the video camera 1 that is arranged on rear projection screen 3 belows again, can realize that video camera 1 closely makes a video recording.By first catoptron 6, can reduce the distance between video camera 1 and the personnel participating in the meeting.
Claims (2)
1. imaging and projecting system that is used for video conference, by video camera, projector, the Transflective mirror, first catoptron, second catoptron and rear projection screen constitute, it is characterized in that: described Transflective mirror is arranged on the place ahead of rear projection screen, described first catoptron is arranged on the front lower place of rear projection screen, described video camera is arranged on the below of rear projection screen, the position for video camera is in the reflection emitting light path of Transflective mirror, described projector is arranged on the rear of rear projection screen, described second catoptron is arranged on the rear of rear projection screen, the reflecting surface of described second catoptron is arranged in the input path of the emitting light path and the rear projection screen of projector, and described position for video camera is in the emitting light path of first catoptron and Transflective mirror.
2. a kind of imaging and projecting system that is used for video conference as claimed in claim 1 is characterized in that: the transmittance of described Transflective mirror is 10%, and reflecting rate is 35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100399321A CN101620363B (en) | 2008-06-30 | 2008-06-30 | Imaging and projecting system for video conference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100399321A CN101620363B (en) | 2008-06-30 | 2008-06-30 | Imaging and projecting system for video conference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101620363A CN101620363A (en) | 2010-01-06 |
| CN101620363B true CN101620363B (en) | 2011-01-26 |
Family
ID=41513658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100399321A Active CN101620363B (en) | 2008-06-30 | 2008-06-30 | Imaging and projecting system for video conference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101620363B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890787A (en) * | 1996-02-16 | 1999-04-06 | Videotronic Systems | Desktop large image and eye-contact projection display |
| CN1378741A (en) * | 1999-08-10 | 2002-11-06 | 彼得·麦克达菲·怀特 | Communication system |
| CN101122729A (en) * | 2006-08-09 | 2008-02-13 | 富士施乐株式会社 | Image processing apparatus |
| CN201237690Y (en) * | 2008-06-30 | 2009-05-13 | 上海邮电设计院有限公司 | Imaging projection device used for video conference |
-
2008
- 2008-06-30 CN CN2008100399321A patent/CN101620363B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890787A (en) * | 1996-02-16 | 1999-04-06 | Videotronic Systems | Desktop large image and eye-contact projection display |
| CN1378741A (en) * | 1999-08-10 | 2002-11-06 | 彼得·麦克达菲·怀特 | Communication system |
| CN101122729A (en) * | 2006-08-09 | 2008-02-13 | 富士施乐株式会社 | Image processing apparatus |
| CN201237690Y (en) * | 2008-06-30 | 2009-05-13 | 上海邮电设计院有限公司 | Imaging projection device used for video conference |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-77845A 2002.03.15 |
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| Publication number | Publication date |
|---|---|
| CN101620363A (en) | 2010-01-06 |
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