SENSOR MODULE

• Main Authors: MORIMOTO TAKAAKI, OSHIMA SATORU, BOGAKI AKIRA, YANAGIUCHI TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 26.03.2020
• Subjects: CHECKING-DEVICES; HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING; PHYSICS

To efficiently prevent a reduction in definition and accuracy of each pixel when images relating to a plurality of visible light and infrared light having different wavelength bands are formed.SOLUTION: A sensor module lights light sources that emit light having a plurality of different wavelength bands including a wavelength band of at least a visible light region and an infra-red region in overlapped lighting timing to irradiate a bill with the light having the plurality of different wavelength bands including the wavelength band of at least the visible light region and the infra-red region in overlapped timing. Then, the sensor module uses a light receiving element including a band-pass filter that only transmits light having a wavelength in the range according to the wavelength band of each light source to simultaneously acquire received light intensity of the light having the wavelength in the range according to the wavelength band of each light source from the bill, and forms image data on the basis of the received light intensity for each wavelength band acquired.SELECTED DRAWING: Figure 1 【課題】波長帯の異なる複数の可視光及び赤外光に関する画像を形成する場合に、各画像の解像度及び正確性の低下を効率良く防止する。【解決手段】少なくとも可視光領域及び赤外光領域の波長帯を含む複数の異なる波長帯の光を発光する光源を点灯タイミングを重ねて点灯することによって、少なくとも可視光領域及び赤外光領域の波長帯を含む複数の異なる波長帯の光を紙幣にタイミングを重ねて照射して、それぞれの光源の波長帯に応じた範囲の波長の光のみを透過するバンドパスフィルタを備えた受光素子を用いることによって、紙幣からのそれぞれの光源の波長帯に応じた範囲の波長の光の受光強度を同時に取得して、取得した波長帯ごとの受光強度に基づいて画像データを形成するようにした。【選択図】図１