An image processing device, comprising: an image processor configured to process an image; a controller configured to control power supplied to the image processor based on an output signal of a photosensitive sensor; and a sensor apparatus, characterized in that: the sensor apparatus comprises: the photosensitive sensor including a first lens, and a second lens which focus on a photosensitive element (26,27); the photosensitive sensor including an infrared sensor, a cover having a first slit which may be arranged on an optical axis of the first lens and a second slit which may be arranged on an optical axis of the second lens; and a moving mechanism configured to relatively move the photosensitive sensor and the cover so that the second slit is arranged on the optical axis of the first lens, characterized in that the first lens and the second lens are arranged side by side in a circumferential direction of a horizontal axis, the horizontal axis being parallel to a width direction of the image processing device, and the moving mechanism is configured to pivot the photosensitive sensor around the horizontal axis to move the photosensitive sensor to a first detection state and a second detection state, wherein the first detection state has a greater detection range than the second detection state, wherein in the first detection state, the first slit is arranged on the optical axis of the first lens and the second slit is arranged on the optical axis of the second lens, and in the second detection state, the second slit is arranged on the optical axis of the first lens. an image processor configured to process an image; a controller configured to control power supplied to the image processor based on an output signal of a photosensitive sensor; and a sensor apparatus, characterized in that: the sensor apparatus comprises: the photosensitive sensor including a first lens, and a second lens which focus on a photosensitive element (26,27); the photosensitive sensor including an infrared sensor, a cover having a first slit which may be arranged on an optical axis of the first lens and a second slit which may be arranged on an optical axis of the second lens; and a moving mechanism configured to relatively move the photosensitive sensor and the cover so that the second slit is arranged on the optical axis of the first lens, characterized in that the first lens and the second lens are arranged side by side in a circumferential direction of a horizontal axis, the horizontal axis being parallel to a width direction of the image processing device, and the moving mechanism is configured to pivot the photosensitive sensor around the horizontal axis to move the photosensitive sensor to a first detection state and a second detection state, wherein the first detection state has a greater detection range than the second detection state, wherein in the first detection state, the first slit is arranged on the optical axis of the first lens and the second slit is arranged on the optical axis of the second lens, and in the second detection state, the second slit is arranged on the optical axis of the first lens. the photosensitive sensor including a first lens, and a second lens which focus on a photosensitive element (26,27); the photosensitive sensor including an infrared sensor, a cover having a first slit which may be arranged on an optical axis of the first lens and a second slit which may be arranged on an optical axis of the second lens; and a moving mechanism configured to relatively move the photosensitive sensor and the cover so that the second slit is arranged on the optical axis of the first lens, characterized in that the first lens and the second lens are arranged side by side in a circumferential direction of a horizontal axis, the horizontal axis being parallel to a width direction of the image processing device, and the moving mechanism is configured to pivot the photosensitive sensor around the horizontal axis to move the photosensitive sensor to a first detection state and a second detection state, wherein the first detection state has a greater detection range than the second detection state, wherein in the first detection state, the first slit is arranged on the optical axis of the first lens and the second slit is arranged on the optical axis of the second lens, and in the second detection state, the second slit is arranged on the optical axis of the first lens.