Abstract: A method for instant communication through the Internet is provided. The method provides the users to instantly communicate with the online registered members through a web page connection without having to install software and register an account. In addition, the method provides Internet service providers with a purchase channel, such that the customer can communicate with the client service representatives instantly. Accordingly, the purpose of enhancing the convenience of instant Internet communication and Internet service is achieved.

Abstract: The executing program method is applied to a Bluetooth dongle using a universal serial bus (USB) as its transmission interface. When the Bluetooth dongle is plugged in an electronic device, the electronic device will automatically detect the Bluetooth dongle. An application which is stored in a storage unit of the Bluetooth dongle is activated, and the Bluetooth dongle is also activated to link a Bluetooth device. The cache files produced by the application are pointed to store in the storage unit of the Bluetooth dongle. In addition, an auto-detecting program is executed to detect whether the Bluetooth dongle is removed or not every certain period. If the Bluetooth dongle was removed, the link from the Bluetooth dongle to the Bluetooth device will be terminated. The cache files in the Bluetooth dongle will be cleared. Finally, the application and the auto-detecting program are closed.

Abstract: A lens for chromatic aberration compensation is provided. The lens includes a lens body and a plurality of color filter films. The lens body has a light incident plane, a light exit plane and an optical axis. The light incident plane and/or the light exit plane comprises a plurality of discrete area, wherein the area comprises, for example but not limited to, a plurality of annular areas, fan-shaped areas, or polygon areas. The color filter films are disposed over the areas of the lens body respectively, and comprise red color filter films, green color filter films or blue color filter films. Accordingly, the lens for chromatic aberration compensation of the invention can eliminate the aberration effectively.