| AV TECH CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20090257138 | LENS STRUCTURE - A lens structure includes a first barrel, a second barrel, a third barrel, a first lens module and a second lens module. The first and the second barrel respectively have a first guiding-groove and a second guiding-groove. The third barrel has a first portion and a second portion. The first and the second portion respectively have a plurality of third guiding-grooves and a plurality of fourth guiding-grooves. The first and the second guiding-groove encircle the first and the second portion, respectively. The first and the second lens module respectively have a plurality of first guiding-portions and a plurality of second guiding-portions. The first guiding-portions are disposed in sliding way in the corresponding third guiding-groove and connected in helically sliding way into the first guiding-groove. The second guiding-portions are disposed in sliding way in the corresponding fourth guiding-groove and through the second guiding-groove. | 10-15-2009 |
| 20090185296 | LENS MODULE AND LENS BARREL - A lens module including a lens barrel, multiple lenses, and multiple cushions is provided. The lens barrel has an assembling opening, an inner wall, and multiple positioning structures. The positioning structures are integrally formed on the inner wall. An internal diameter of the positioning structure adjacent to the assembling opening is greater than an internal diameter of the positioning structure far away from the assembling opening. In addition, the lenses are respectively fixed in the corresponding positioning structure along an assembling direction. Each cushion is disposed in a pitch between two adjacent lenses, and each lens assembled in the lens barrel is disposed at a predetermined position through the positioning structures and cushions. | 07-23-2009 |
| 20090113509 | VIDEO SYSTEM, VIDEO TRANSMITTER, VIDEO RECEIVER AND CONTROL METHOD FOR THE SAME - A video system with a bi-directional transmission function is provided. The video system includes an video transmitter, a transmission interface and a video receiver. The video transmitter is coupled to the video receiver via the transmission interface (coaxial cable). The video transmitter is used for inserting a first control signal into the video signal according a synchronous signal of the video signal. The video transmitter is used for outputting the video signal with the first control signal to the video receiver via the transmission interface. The video receiver receives the video signal with the first control signal, and gets the first control signal from the video signal according to the synchronous signal of the video signal. In addition, the video receiver can insert a second control signal into the video signal and feedback the second control signal to the video transmitter via the transmission interface. | 04-30-2009 |
| 20080291550 | ZOOM LENS STRUCTURE - The present invention discloses a zooming lens structure comprising at least a fixed lens barrel, an diaphragm member, a front track lens barrel, a rear track lens barrel, a front lens barrel module and a rear lens barrel module, wherein the first guide screw cylinder of the front lens barrel module is driven through geometric correlation of the first guide slot of the fixed lens barrel and the first track of the front track lens barrel to enable the front lens barrel module to shift within the fixed lens barrel; again, the second guide screw cylinder of the rear lens barrel module is driven through geometric correlation of the second guide slot of the fixed lens barrel and the second track of the rear track lens barrel to enable the rear lens barrel module to shift within the fixed lens barrel, and since the screw bolt locks the front and rear track lens barrel, the front and rear track lens barrels rotate simultaneously, and the first guide screw cylinder and the second guide screw cylinder then are simultaneously driven to achieve zooming effect. | 11-27-2008 |
