A light source, comprising: a light emitting element configured to emit light; and a light transmittance adjustment layer located on a light emitting surface of the light emitting element, wherein light transmittance of the light transmittance adjustment layer is adjustable, wherein the light source is characterized in that: the light source further comprises an electroactive layer, wherein the electroactive layer is connected with the light transmittance adjustment layer and configured to be deformed by an electric field to cause the light transmittance adjustment layer to undergo deformation and adjust the light transmittance of light passing through the light transmittance adjustment layer, the light source further comprises a first electrode and a second electrode, insulated from each other and configured to form the electric field, the first electrode comprises a plurality of first sub-electrodes insulated from each other, and the second electrode comprises a plurality of second sub-electrodes insulated from each other, and the plurality of first sub-electrodes and the plurality of second sub-electrodes are insulated from each other, and the electroactive layer comprises a plurality of electroactive material sub-layers, and the plurality of electroactive material sub-layers are configured to be deformed by the electric field formed between the first sub-electrodes and the plurality of second sub-electrodes. a light emitting element configured to emit light; and a light transmittance adjustment layer located on a light emitting surface of the light emitting element, wherein light transmittance of the light transmittance adjustment layer is adjustable, wherein the light source is characterized in that: the light source further comprises an electroactive layer, wherein the electroactive layer is connected with the light transmittance adjustment layer and configured to be deformed by an electric field to cause the light transmittance adjustment layer to undergo deformation and adjust the light transmittance of light passing through the light transmittance adjustment layer, the light source further comprises a first electrode and a second electrode, insulated from each other and configured to form the electric field, the first electrode comprises a plurality of first sub-electrodes insulated from each other, and the second electrode comprises a plurality of second sub-electrodes insulated from each other, and the plurality of first sub-electrodes and the plurality of second sub-electrodes are insulated from each other, and the electroactive layer comprises a plurality of electroactive material sub-layers, and the plurality of electroactive material sub-layers are configured to be deformed by the electric field formed between the first sub-electrodes and the plurality of second sub-electrodes. the light source further comprises an electroactive layer, wherein the electroactive layer is connected with the light transmittance adjustment layer and configured to be deformed by an electric field to cause the light transmittance adjustment layer to undergo deformation and adjust the light transmittance of light passing through the light transmittance adjustment layer, the light source further comprises a first electrode and a second electrode, insulated from each other and configured to form the electric field, the first electrode comprises a plurality of first sub-electrodes insulated from each other, and the second electrode comprises a plurality of second sub-electrodes insulated from each other, and the plurality of first sub-electrodes and the plurality of second sub-electrodes are insulated from each other, and the electroactive layer comprises a plurality of electroactive material sub-layers, and the plurality of electroactive material sub-layers are configured to be deformed by the electric field formed between the first sub-electrodes and the plurality of second sub-electrodes.