초록 ▼

A back lighting device for use with a palm top image scanner includes a body inside which a light generating member is arranged to project light through a window on which a film to be scanned is placed so as to project the image on the film to the image scanner. The window has a frosted surface to s

A back lighting device for use with a palm top image scanner includes a body inside which a light generating member is arranged to project light through a window on which a film to be scanned is placed so as to project the image on the film to the image scanner. The window has a frosted surface to support the film thereon so as to eliminate the interference ring occurring therebetween. The window is provided with a circumferential step so as to define a recessed window area for receiving therein a film holding plate, made of a light transmitting material, for firmly holding the film on the window. The film holding plate may also be provided with a frosted surface to avoid the occurrence of the interference ring between the film holding plate and the window. An extension member is provided to connect to the body in an end to end manner so as to provide a greater space for the movement of the image scanner which allows the image scanner to move through the whole area of the film and thus no portion of the image will be lost during scanning. The extension member is also designed to serve as a cover member which releasably engages the back lighting device in such a manner as to shield and protect the window of the back lighting device from being damaged.

대표청구항 ▼

[ What is claimed is:] [3.] A back lighting device adapted to be used with an image scanner for reading an image recorded on a light transmitting recording medium, the back lighting device comprising:a casing having a first face;an illuminating window formed on the first face and adapted to support

[ What is claimed is:] [3.] A back lighting device adapted to be used with an image scanner for reading an image recorded on a light transmitting recording medium, the back lighting device comprising:a casing having a first face;an illuminating window formed on the first face and adapted to support the recording medium, the illuminating window including a circumferential step surrounding the window so as to define a recessed area;a light generating element disposed in the casing and adapted to permit uniform light to go through the illuminating window and recording medium such that the image of the recording medium is projected to the image scanner; anda holding plate at least partially formed of a light transmitting material, the holding plate being adapted to be receivable in the recessed area of the illuminating window and to firmly hold the recording medium between the holding plate and the illuminating window.