The invention discloses an image reading device and
system. The image reading device comprises a light transmitting plate, a
first light source, a second
light source, a lens, a photovoltaic conversion
chip and a
data processing circuit, wherein the light transmitting plate is used for carrying an original pattern, the light entering side of the lens is arranged corresponding to the light transmitting plate, the lens is used for receiving stimulation light of the original pattern under
irradiation of the
first light source and receiving reflected light of the original pattern under
irradiation of the second
light source, the photovoltaic conversion
chip is arranged on the light outgoing side of the lens and provided with a
first light sensing pixel line and a second
light sensing pixel line, and the
data processing circuit is connected with the photovoltaic conversion
chip and used for receiving a first-way
signal output by the first
light sensing pixel line and a second-way
signal output by the second
light sensing pixel line and used for splitting the second-way
signal into a first signal, a second signal, a third signal and a fourth signal. By means of the image reading device and
system, the problem that an image reading device in the prior art cannot effectively read images in the original pattern is solved, and the effects of greatly improving the reading function of the image reading device and simplifying the image reading processes are further achieved.