A vehicle lighting system comprising: a lamp unit (100a, 100b) configured to be disposed in a front section of a vehicle; and a control unit (9, 102) configured to control the operation of the lamp unit (100a, 100b); wherein the lamp unit (100a, 100b) comprises: a light source configured to be controlled by the control unit (9, 102) and configured to emit light; a liquid crystal element configured to be controlled by the control unit (9, 102) and configured to use the light emitted from the light source to form irradiation light; and a lens configured to project the periphery of the vehicle the irradiation light formed by the liquid crystal element; wherein the light emitted from the light source is made incident to the liquid crystal element at a wide angle including a component in a direction inclined from the normal of a light incident surface of the liquid crystal element; characterized in that the light incident surface has at least a first region in which a relatively large amount of the light is incident from a direction along a viewing direction of the liquid crystal element and a second region in which a relatively large amount of the light is incident from a direction not along the viewing direction of the liquid crystal element; and wherein the control unit (9. 102) is configured to drive the liquid crystal element by setting a first voltage of the first region to be lower than a second voltage of the second region so as to reduce the difference in the transmittance between the first region and the second region (region R1). a lamp unit (100a, 100b) configured to be disposed in a front section of a vehicle; and a control unit (9, 102) configured to control the operation of the lamp unit (100a, 100b); wherein the lamp unit (100a, 100b) comprises: a light source configured to be controlled by the control unit (9, 102) and configured to emit light; a liquid crystal element configured to be controlled by the control unit (9, 102) and configured to use the light emitted from the light source to form irradiation light; and a lens configured to project the periphery of the vehicle the irradiation light formed by the liquid crystal element; wherein the light emitted from the light source is made incident to the liquid crystal element at a wide angle including a component in a direction inclined from the normal of a light incident surface of the liquid crystal element; characterized in that the light incident surface has at least a first region in which a relatively large amount of the light is incident from a direction along a viewing direction of the liquid crystal element and a second region in which a relatively large amount of the light is incident from a direction not along the viewing direction of the liquid crystal element; and wherein the control unit (9. 102) is configured to drive the liquid crystal element by setting a first voltage of the first region to be lower than a second voltage of the second region so as to reduce the difference in the transmittance between the first region and the second region (region R1). a light source configured to be controlled by the control unit (9, 102) and configured to emit light; a liquid crystal element configured to be controlled by the control unit (9, 102) and configured to use the light emitted from the light source to form irradiation light; and a lens configured to project the periphery of the vehicle the irradiation light formed by the liquid crystal element; wherein the light emitted from the light source is made incident to the liquid crystal element at a wide angle including a component in a direction inclined from the normal of a light incident surface of the liquid crystal element; characterized in that the light incident surface has at least a first region in which a relatively large amount of the light is incident from a direction along a viewing direction of the liquid crystal element and a second region in which a relatively large amount of the light is incident from a direction not along the viewing direction of the liquid crystal element; and wherein the control unit (9. 102) is configured to drive the liquid crystal element by setting a first voltage of the first region to be lower than a second voltage of the second region so as to reduce the difference in the transmittance between the first region and the second region (region R1).