Holographic external calling device for elevator

A holographic external calling device for an elevator, including:

• a device shell, wherein:
• one side of the device shell is provided with one or more sensor mounting holes, one or more gesture sensors are installed in the one or more sensor mounting holes, an optical module is installed in the device shell, and two screen mounting slots are arranged on one side of the optical module, a screen is installed in the two screen mounting slots for generating a first image, a bottom side of the optical module is provided with a main board, the main board is located in the device shell, and a device mounting plate is installed on the bottom side of the device shell, and the device mounting plate is matched with the device shell,
• wherein the optical module is configured to reconstruct light of the first image to generate a second image in the air,
• wherein the one or more gesture sensors are configured to sense a gesture of a user to make a selection on the air of the second image, and in response to sensing the gesture, send a command to the main board,
• wherein in response to receiving the command, the main board is configured to send a signal to a control system of the elevator based on the selection,
• wherein the one side of the device shell with the one or more sensor mounting holes is protruding and forms an obtuse angle with the screen, and wherein the one or more sensor mounting holes point across the second image in the air.