An image generating device comprising: a support unit configured to support an object; an irradiation unit configured to irradiate the object disposed on the support unit; a light receiving unit configured to receive light returning from the object disposed on the support unit; and a control unit configured to generate a light irradiation signal for controlling the irradiation unit, a light-receiving region driving signal for controlling the light receiving unit and an image using the light received by the light receiving unit based on the light-receiving region driving signal, wherein the irradiation unit includes a first irradiation unit for irradiating a first region of the object with light and a second irradiation unit for irradiating a second region of the object with light, the first irradiation unit and the second irradiation unit being disposed to irradiate opposite sides of the object with respect to the light receiving unit, wherein the light receiving unit includes a first light-receiving region and a second light-receiving region, the light receiving unit including a plurality of lines having a plurality of light intensity value acquisition regions, the light receiving unit sequentially acquiring a plurality of light intensity values from the plurality of lines, and the first light-receiving region and the second light-receiving region including a plurality of pixels and being disposed at different positions on the light receiving unit, wherein the light irradiation signal includes a first light irradiation signal for controlling the first irradiation unit and a second light irradiation signal for controlling the second irradiation unit, wherein the light-receiving region driving signal includes a first light-receiving region driving signal for driving the first light-receiving region and a second light-receiving region driving signal for driving the second light-receiving region the first light-receiving region operating in relation to the first light irradiation unit and the second light-receiving region operating in relation to the second light irradiation unit, wherein the control unit is configured to generate the first light irradiation signal and the first light-receiving region driving signal, and generate the second light irradiation signal and the second light-receiving region driving signal, so as to prevent a light saturation phenomenon from occurring in the light receiving unit caused by the driving of the irradiation unit, characterized in that the first irradiation unit gradually decreases an intensity of the light irradiated to the object disposed on the support unit, and the second irradiation unit gradually increases an intensity of the light irradiated to the object disposed on the support unit. a support unit configured to support an object; an irradiation unit configured to irradiate the object disposed on the support unit; a light receiving unit configured to receive light returning from the object disposed on the support unit; and a control unit configured to generate a light irradiation signal for controlling the irradiation unit, a light-receiving region driving signal for controlling the light receiving unit and an image using the light received by the light receiving unit based on the light-receiving region driving signal, wherein the irradiation unit includes a first irradiation unit for irradiating a first region of the object with light and a second irradiation unit for irradiating a second region of the object with light, the first irradiation unit and the second irradiation unit being disposed to irradiate opposite sides of the object with respect to the light receiving unit, wherein the light receiving unit includes a first light-receiving region and a second light-receiving region, the light receiving unit including a plurality of lines having a plurality of light intensity value acquisition regions, the light receiving unit sequentially acquiring a plurality of light intensity values from the plurality of lines, and the first light-receiving region and the second light-receiving region including a plurality of pixels and being disposed at different positions on the light receiving unit, wherein the light irradiation signal includes a first light irradiation signal for controlling the first irradiation unit and a second light irradiation signal for controlling the second irradiation unit, wherein the light-receiving region driving signal includes a first light-receiving region driving signal for driving the first light-receiving region and a second light-receiving region driving signal for driving the second light-receiving region the first light-receiving region operating in relation to the first light irradiation unit and the second light-receiving region operating in relation to the second light irradiation unit, wherein the control unit is configured to generate the first light irradiation signal and the first light-receiving region driving signal, and generate the second light irradiation signal and the second light-receiving region driving signal, so as to prevent a light saturation phenomenon from occurring in the light receiving unit caused by the driving of the irradiation unit, characterized in that the first irradiation unit gradually decreases an intensity of the light irradiated to the object disposed on the support unit, and the second irradiation unit gradually increases an intensity of the light irradiated to the object disposed on the support unit.