Linear lighting device and image access device using thereof

The present invention provides one kind of linear lighting device and the image reader therewith. The linear lighting device includes one strip optical conductor of transparent parts, LED's configuredto the light incoming side of the optical conductor, one optical conducting part to guide the incoming light lengthwise and one light outgoing part for the guided light to irradiate in the whole lengthwise direction. Inside the linear lighting device, wedged lugs and lugs with flat front end are formed oppositely for controlling the light from the light conducting part to the light outgoing part,and this can inhibit the lowering of the outgoing light flux and reduce the inhomogeneity of brightness in lengthwise direction of the optical conductor.