▎ 摘　　要

NOVELTY - The device has a cover glass that is connected to two dimension scanning platforms by connecting rod. A light detecting device (1) is adapted to provide round polarized light by lens focus after the incidence to prism ultrasonic probe. A graphene thin film is provided with light polarizing beam splitter (3). The polarized light is divided into s-polarized light and p-polarized light by polarization beam splitter. The reconstruction of collected data is performed to form photo-acoustic image. USE - Photo-acoustic imaging device. ADVANTAGE - The structure of device is simplified. The fast photo-acoustic imaging of large area sample is realized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a photo-acoustic imaging method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the photo-acoustic imaging device. Light detecting device (1) Photo-acoustic imaging probe (2) Polarization beam splitter (3) Balance detector (4) High-frequency amplifier (5)