Abstract: An optical apparatus for a line scanner system comprises a main lens group, an aspherical field flattener lens and a line sensor arranged sequentially along the same optical axis. The main lens group consists of four rotationally symmetrical lenses for refracting and converging light beams into focus. The field flattener lens is rotationally symmetrical in its optical profile and shapes as a strip oriented along the direction of the line image. The field flattener lens is arranged between the main lens group and the line sensor and closer to the line sensor for refracting the light beam to the line sensor in a relatively wide field angle, and as a result, various aberrations have been corrected while the optical total track also has been reduced. And an image plane is provided in the line sensor for the linear light beam, in which the instantaneous field of view is a line.

Abstract: An optical apparatus for a line scanner system comprises a main lens group, an aspherical field flattener lens and a line sensor arranged sequentially along the same optical axis. The main lens group consists of four rotationally symmetrical lenses for refracting and converging light beams into focus. The field flattener lens is rotationally symmetrical in its optical profile and shapes as a strip oriented along the direction of the line image. The field flattener lens is arranged between the main lens group and the line sensor and closer to the line sensor for refracting the light beam to the line sensor in a relatively wide field angle, and as a result, various aberrations have been corrected while the optical total track also has been reduced. And an image plane is provided in the line sensor for the linear light beam, in which the instantaneous field of view is a line.

Abstract: A modular electronic image-capturing system comprises at least two detachable and interchangeable image-forming modules and an electronic image-capturing module. The image-forming modules include a film-scanning module with the lens designed for short conjugate distances and an image-forming lens designed for long conjugate distances for general photography. The film-scanning module has an illumination device for illuminating transparent film. The film-scanning module also includes a film carrier which accepts and places at least one piece of photographic films in correct location. The modular electronic image-capturing system further includes the control circuits and connecting interface in order to manipulate the image-forming modules.

Abstract: A modular electronic image-capturing system comprises at least two detachable and interchangeable image-forming modules and an electronic image-capturing module. The image-forming modules include a film-scanning module with the lens designed for short conjugate distances and an image-forming lens designed for long conjugate distances for general photography. The film-scanning module has an illumination device for illuminating transparent film. The film-scanning module also includes a film carrier which accepts and places at least one piece of photographic films in correct location. The modular electronic image-capturing system further includes the control circuits and connecting interface in order to manipulate the image-forming modules.